MAX14802,03(A) Series Datasheet by Maxim Integrated

View All Related Products | Download PDF Datasheet
maxim Integrated
MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
19-4484; Rev 4; 6/13
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
General Description
The MAX14802/MAX14803/MAX14803A provide high-
voltage switching on 16 channels for ultrasonic imaging
and printer applications. The devices utilize HVCMOS
process technology to provide 16 high-voltage low-
charge-injection SPST switches, controlled by a digital
interface. Data is clocked into an internal 16-bit shift
register and retained by a programmable latch with
enable and clear inputs. A power-on reset function
ensures that all switches are open on power-up.
The MAX14802/MAX14803/MAX14803A operate with a
wide range of high-voltage supplies including VPP/VNN
= +100V/-100V, +200V/0V, or +40V/-160V. The digital
interface operates from a separate +2.7V to +5.5V VDD
supply. Digital inputs DIN, CLK, LE, and CLR operate
on the VDD supply voltage.
The MAX14803/MAX14803A provide integrated 35kΩ
bleed resistors on each switch terminal to discharge
capacitive loads. The MAX14802/MAX14803/
MAX14803A provide integrated clamping diodes for
overvoltage protection against positive overshoot.
The MAX14802 is available in a 48-pin TQFP package
and is specified for commercial 0°C to +70°C and
extended -40°C to +85°C temperature ranges.
The MAX14803 is available in a 48-pin TQFP package
and is specified for the commercial 0°C to +70°C tem-
perature range.
The MAX14803A is available in the 110-bump wafer level
package (WLP) and is specified at the -40°C to +85°C
temperature range.
Applications
Ultrasound Imaging
Printers
Features
oIntegrated Overvoltage Protection
o20MHz Serial Interface (5V)
oHVCMOS Technology for High Performance
oIndividually Programmable High-Voltage Analog
Switches
oVery Low 5µA (typ) Quiescent Current
oDC-to-20MHz Low-Voltage Analog Signal
Frequency Range
o2.7V to 5.5V Logic Supply Voltage
oLow-Charge Injection, Low-Capacitance RL
Switches
o-77dB (typ) Off-Isolation at 5MHz (RL= 50Ω)
oDaisy-Chainable Serial Interface
oFlexible High-Voltage Supplies (VPP - VNN = 250V)
Ordering Information/Selector Guide
PART SWITCH
CHANNELS BLEED RESISTOR OVP PIN-PACKAGE TEMP RANGE
MAX14802CCM+ 16 No Yes 48 TQFP 0°C to +70°C
MAX14802ECM+ 16 No Yes 48 TQFP -40°C to +85°C
MAX14803CCM+ 16 Yes Yes 48 TQFP 0°C to +70°C
MAX14803AEWZ+ 16 Yes Yes 110 WLP -40°C to +85°C
Pin Configurations appear at end of data sheet.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
board For delafled \mo'maUOH OH package therma‘ Conswde'auons‘ 'eier to WWW.maximimegraled.coml1hermaI-lutorial
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
2Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD = +2.7V to +5.5V, VPP = +40V to VNN + 250V, VNN = -40V to -160V, TA= TMIN to TMAX, unless otherwise noted. Typical values
are at TA= +25°C.) (Note 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
(All voltages referenced to GND.)
VDD Logic-Supply Voltage .......................................-0.3V to +7V
VPP - VNN Supply Voltage
(MAX14802CCM+, MAX14803CCM+)..............................260V
(MAX14802ECM+, MAX14803AEWZ+) ............................230V
VPP Positive-Supply Voltage.................................-0.3V to +220V
VNN Negative-Supply Voltage ...............................-0.3V to -220V
Logic Inputs (LE, CLR, CLK, DIN, DOUT)................-0.3V to +7V
COM_, NO_...............................(-0.3V + VNN) to the minimum of
[(VNN + 220V) or (VPP + 0.3V)]
Peak Analog Signal Current Per Channel ................................3A
Continuous Power Dissipation (TA= +70°C)
48-Pin TQFP (derate 22.7mW/°C above +70°C).........1818mW
110-Bump WLP (derate 37mW°C above +70°C)........2960mW
Operating Temperature Range (Commercial)........0°C to +70°C
Operating Temperature Range (Extended).........-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature..................................................... +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PACKAGE THERMAL CHARACTERISTICS (Note 1)
TQFP
Junction-to-Ambient Thermal Reistance (θJA)..............44°C/W
Junction-to-Case Thermal Resistance (θJC).................10°C/W
WLP
Junction-to-Ambient Thermal Reistance (θJA)..............27°C/W
Junction-to-Case Thermal Resistance (θJC)...................1°C/W
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLIES
V
DD
Supply Voltage V
DD
+2.7 +5.5 V
MAX14802ECM+, MAX14803AEWZ+ +40 +100 V
NN
+
200
V
PP
Supply Voltage V
PP
MAX14802CCM+, MAX14803CCM+ +40 +100 V
NN
+
250
V
V
NN
Supply Voltage V
NN
-160 -100 0 V
V
DD
Supply Quiescent
Current I
DDQ
A
V
DD
Supply Dynamic
Current I
DD
V
DD
= +5V, V
LE
= +5V, f
CLK
= 5MHz 0.5 mA
V
PP
Supply Quiescent
Current I
PPQ
All switches remain on or off, I
COM_
= 5mA 0 10 μA
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
3
Maxim Integrated
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
VPP = +40V, VNN = -160V, fCOM_ = 50kHz 4
VPP = +100V, VNN = -100V, fCOM_ = 50kHz 3.4 6
VPP Supply Dynamic
Current (All Channel
S w i tchi ng S i m ul taneousl y)
IPP
VPP = +160V, VNN = -40V, fCOM_ = 50kHz 8
mA
VNN Supply Quiescent
Current INNQ All switches remain on or off, ICOM_ = 5mA 0 10 μA
VPP = +40V, VNN = -160V, fCOM_ = 50kHz 5
VPP = +100V, VNN = -100V, fCOM_ = 50kHz 2.3 4
VNN Supply Dynamic
Current (All Channel
S w i tchi ng S i m ul taneousl y)
INN
VPP = +160V, VNN = -40V, fCOM_ = 50kHz 3
mA
ANALOG SWITCH
COM_, NO_ Analog Signal
Range
VCOM_,
VNO_ (Note 3) VNN
m i n of ( V
N N
+ 200V)
or (VPP -
10V)
V
ICOM_ = 5mA 26 48
VPP = +40V, VNN = -160V,
VCOM_ = 0V IC OM _ = 200m A2232
ICOM_ = 5mA 22 30
VPP = +100V, VNN = -100V,
VCOM_ = 0V IC OM _ = 200m A1827
ICOM_ = 5mA 20 30
Small-Signal Switch
On-Resistance RONS
VPP = +160V, VNN = -40V,
VCOM_ = 0V IC OM _ = 200m A1627
Ω
Small-Signal Switch
On-Resistance Matching ΔRONS VPP = +100V, VNN = -100V, VCOM_ = 0V,
ICOM_ = 5mA 5%
Large-Signal Switch
On-Resistance RONL VCOM_ = VPP - 10V, ICOM_ = 1A 15 Ω
Shunt Resistance RINT N O_ or C OM _ to GN D ( M AX14803/M AX 14803A),
switch off 30 40 50 KΩ
Switch-Off Leakage ICOM_
(
OFF
),
INO_
(
OFF
)
VCOM_, VNO_ = +100V or unconnected 0 2 μA
Switch-Off DC Offset RL = 100kΩ-30 +30 mV
Switch-Output Peak
Current 100ns pulse width, 0.1% duty cycle (Note 4) 3 A
Switch-Output COM_
Isolation Diode Current 300ns pulse width, 2% duty cycle (Note 4) 500 mA
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +5.5V, VPP = +40V to VNN + 250V, VNN = -40V to -160V, TA= TMIN to TMAX, unless otherwise noted. Typical values
are at TA= +25°C.) (Note 2)
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
4Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +5.5V, VPP = +40V to VNN + 250V, VNN = -40V to -160V, TA= TMIN to TMAX, unless otherwise noted. Typical values
are at TA= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time t
ON
V
NO_
= +100V, R
L
= 10kΩ,
V
NN
= -100V 2 3.5 μs
Turn-Off Time t
OFF
V
NO_
= +100V, R
L
= 10kΩ,
V
NN
= -100V 2 3.5 μs
Output Switching
Frequency f
SW
Duty cycle = 50% 50 kHz
Maximum V
COM_
, V
NO_
Slew Rate dV/dt (Note 4) 20 V/ns
f = 5MHz, R
L
= 1kΩ, C
L
= 15pF -50
Off-Isolation V
ISO
f = 5MHz, R
L
= 50Ω-77 dB
Crosstalk V
CT
f = 5MHz, R
L
= 50Ω-80 dB
COM_, NO_ Off-
Capacitance
C
COM_
(
OFF
),
C
NO_
(
OFF
)
V
COM_
= 0V, V
NO_
= 0V, f = 1MHz (Note 4) 4 11 18 pF
COM_ On-Capacitance C
COM_
(
ON
)
V
COM_
= 0V, f = 1MHz (Note 4) 20 36 56 pF
Output-Voltage Spike V
SPK
R
L
= 50_ (Note 4) -150 +150 mV
Small-Signal Analog
Bandwidth f
BW
V
PP
= +100V, V
NN
= -100V, C
L
= 200pF 20 MHz
V
PP
= +40V, V
NN
= -160V, V
COM_
= 0V 820
V
PP
= +100V, V
NN
= -100V, V
COM_
= 0V 600Charge Injection Q
V
PP
= +160V, V
NN
= -40V, V
COM_
= 0V 350
pC
LOGIC LEVELS
Logic-Input Low Voltage V
IL
0.75 V
Logic-Input High Voltage V
IH
V
DD
-
0.75 V
Logic-Output Low Voltage V
OL
I
SINK
= 1mA 0.4 V
Logic-Output High Voltage V
OH
I
SOURCE
= 0.75mA V
DD
-
0.5 V
Logic-Input Capacitance C
IN
(Note 4) 10 pF
Logic-Input Leakage I
IN
-1 +1 μA
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
5
Maxim Integrated
TIMING CHARACTERISTICS
(VDD = +2.7V to +5.5V, VPP = +40V to VNN + 200V, VNN = -40V to -160V, TA= TMIN to TMAX, unless otherwise noted. Typical values
are at TA= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LOGIC TIMING (Figure 1)
VDD = +5V ±10% 20
CLK Frequency fCLK VDD = +3V ±10% 10 MHz
VDD = +5V ±10% 10
DIN to CLK Setup Time tDS VDD = +3V ±10% 16 ns
VDD = +5V ±10% 3
DIN to CLK Hold Time tDH VDD = +3V ±10% 3 ns
VDD = +5V ±10% 36
CLK to LE Setup Time tCS VDD = +3V ±10% 65 ns
VDD = +5V ±10% 14
LE Low-Pulse Width tWL VDD = +3V ±10% 22 ns
VDD = +5V ±10% 20
CLR High-Pulse Width tWC VDD = +3V ±10% 40 ns
VDD = +5V ±10% 50
CLK Rise and Fall Times tR, tFVDD = +3V ±10% 50 ns
VDD = +5V ±10% 6 42
CLK to DOUT Delay tDO VDD = +3V ±10% 12 80 ns
Note 2: All devices are 100% tested at TA= +70°C. Limits over the operating temperature range are guaranteed by design and
characterization.
Note 3: The analog signal input VCOM_ and VNO_ must satisfy VNN (VCOM_, VNO_) VPP, or remain unconnected during power-up
and power-down.
Note 4: Guaranteed by characterization; not production tested.
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
6Maxim Integrated
Test Circuits
MAX14802
MAX14803
MAX14803A
+100V
-100V
+100V
-100V
VPP
VNN
NO_
COM_
VPP
+100V
-100V
VNN
VDD
SWITCH OFF LEAKAGE
GND
+5V
ISOL
MAX14802
MAX14803
MAX14803A
VOUT
RL
100kΩ
VPP
VNN
NO_
COM_
VPP
VNN
VDD
DC OFFSET ON/OFF
GND
+5V
MAX14802
MAX14803
MAX14803A
VOUT
VPP
VPP - 10V
VNN
NO_
COM_
VPP
VNN
VDD
tON/tOFF TEST CIRCUIT
GND
+5V
RL
100kΩ
MAX14802
MAX14803
MAX14803A
VPP
VNN
NO_
COM_
VPP
VNN
VDD
OFF ISOLATION
VISO = 20LOG
VOUT
VIN
GND
+5V
MAX14802
MAX14803
MAX14803A
VOUT
VOUT = 10VP-P
AT 5MHz
VPP
VNN
COM_
IID
VPP
VNN
NO_
VPP
VNN
VDD
ISOLATION DIODE CURRENT
GND
+5V
MAX14802
MAX14803
MAX14803A
VOUT
VOUT
VCOM_
VPP
VNN
NO_
100pF
COM_
VPP
VNN
VDD
Q = 1000pF x VOUT
CHARGE INJECTION
GND
+5V
MAX14802
MAX14803
MAX14803A
VOUT
+VSPK
-VSPK
VPP
VNN
NO_
COM_
VPP
VNN
VDD
OUTPUT-VOLTAGE SPIKE
GND
+5V
RL
VOUT
MAX14802
MAX14803
MAX14803A
VPP
VNN
NO_
COM_
NO_
COM_
VPP
VNN
VDD
CROSSTALK
VCT = 20LOG VOUT
VIN
GND
+5V
VOUT = 10VP-P
AT 5MHz
50Ω
VNN
50Ω
50Ω
RL
1kΩ
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
7
Maxim Integrated
ON-RESISTANCE vs.
ANALOG SIGNAL VOLTAGE
MAX14800 toc01
VCOM_ (V)
ON-RESISTANCE (Ω)
100500-50-100
20
40
60
80
100
120
140
160
180
0
-150 150
VPP = +160V, VNN = -40V
VPP = +40V, VNN = -160V
VPP = +100V, VNN = -100V
ON-RESISTANCE vs.
ANALOG SIGNAL VOLTAGE
MAX14800 toc02
VCOM_ (V)
ON-RESISTANCE (Ω)
-50 0 50
20
40
60
80
100
120
140
160
0
-100 100
VPP = +100V, VNN = -100V
TA = +25°C
TA = +70°C
TA = 0°C
TURN-ON/TURN-OFF TIME vs.
ANALOG SIGNAL VOLTAGE
MAX14800 toc03
VNO_ (V)
TURN-ON/TURN-OFF TIME (μs)
60300-60 -30
1
2
3
4
5
0
-90 90
tOFF
tON
OFF-ISOLATION vs. FREQUENCY
MAX14800 toc04
FREQUENCY (MHz)
OFF-ISOLATION (dB)
100.01 10.1
-60
-40
-20
0
-80
0.001 100
TA = +25°C
TA = +70°C
TA = 0°C
LEAKAGE CURRENT vs. TEMPERATURE
MAX14800 toc05
TEMPERATURE (°C)
LEAKAGE CURRENT (nA)
4020 6010 5030
2.5
3.0
3.5
4.0
4.5
5.0
2.0
070
ICOM_(ON) (VCOM_ = +90V)
ICOM_(ON) (VCOM_ = -90V)
ICOM_(OFF) (VCOM_ = -90V)
ICOM_(OFF) (VCOM_ = +90V)
ICOM_(OFF) (VCOM_ = 0V)
ICOM_(ON) (VCOM_ = 0V)
LOGIC SUPPLY CURRENT vs.
SUPPLY VOLTAGE
MAX14800 toc06
VDD SUPPLY VOLTAGE (V)
IDDQ SUPPLY CURRENT (μA)
4.7 5.14.33.1 3.5 3.9
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0
2.7 5.5
TA = +25°C
TA = +70°C
TA = 0°C
HIGH-VOLTAGE SUPPLY CURRENT vs.
TEMPERATURE
MAX14800 toc07
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
3010 6020 40 50
0.05
0.10
0.15
0.20
0
070
IPP
VPP = +100V
VNN = -100V
INN
LOGIC SUPPLY CURRENT vs.
SERIAL-CLOCK FREQUENCY
MAX14800 toc08
CLK SERIAL-CLOCK FREQUENCY (MHz)
IDD SUPPLY CURRENT (μA)
8264
100
50
150
200
250
0
010
TA = +25°C
TA = +70°C
TA = 0°C
HIGH-VOLTAGE SUPPLY CURRENT vs.
SWITCHING FREQUENCY
MAX14800 toc09
SWITCHING FREQUENCY (kHz)
SUPPLY CURRENT (mA)
4010 3020
2
4
6
8
0
050
IPP
ALL SWITCHES SWITCHING
TA = +25°C
INN
Typical Operating Characteristics
(VDD = +3V, VPP = +100V, VNN = -100V, TA= +25°C, unless otherwise noted.)
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
8Maxim Integrated
Pin Description
PIN
TQFP WL P
NAME FUNCTION
1, 2, 14, 16, 24, 35,
36
A1, A3, A5, A8, A9,
A11, B1–B5, B10,
B11, C1, C3, C5,
C6, C7, C9, C11,
D2, D4–D8, D10,
E1, E3–E9, E11, F2,
F4F8, F10, G1,
G3, G5, G6, G7, G9,
G11, H2, H4, H6,
H8, H10, J1, J3,
J5, J6, J7, J9, J11,
K1, K2, K4, K6, K8,
K10, K11
N.C. No Connection. Not internally connected.
3 J2 COM4 Analog Switch 4—Common Terminal
4 H1 NO4 Analog Switch 4—Normally-Open Terminal
5 F3 NO3 Analog Switch 3—Normally-Open Terminal
6 F1 COM3 Analog Switch 3—Common Terminal
7 G2 NO2 Analog Switch 2—Normally-Open Terminal
8 E2 COM2 Analog Switch 2—Common Terminal
9 D3 COM1 Analog Switch 1—Common Terminal
10 D1 NO1 Analog Switch 1—Normally-Open Terminal
11 C2 NO0 Analog Switch 0—Normally-Open Terminal
12 C4 COM0 Analog Switch 0—Common Terminal
13 A4 VNN Negative High-Voltage Supply. Bypass VNN to GND with a 0.F or greater
ceramic capacitor.
15 A2 VPP Positive High-Voltage Supply. Bypass VPP to GND with a 0.1μF or greater
ceramic capacitor.
17 B6 GND Ground
18 A10 VDD Digital Supply Voltage. Bypass VDD to GND with a 0.F or greater ceramic
capacitor.
19 B7 DIN Serial-Data Input
20 A6 CLK Serial-Clock Input
21 B8 LE Active-Low, Latch-Enable Input
22 B9 CLR Latch Clear Input
23 A7 DOUT Serial-Data Output
25 C8 COM15 Analog Switch 15—Common Terminal
26 C10 NO15 Analog Switch 15—Normally-Open Terminal
27 D11 NO14 Analog Switch 14—Normally-Open Terminal
28 D9 COM14 Analog Switch 14—Common Terminal
29 E10 COM13 Analog Switch 13—Common Terminal
30 G10 NO13 Analog Switch 13—Normally-Open Terminal
31 F11 COM12 Analog Switch 12—Common Terminal
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
9
Maxim Integrated
Pin Description (continued)
PIN
TQFP WL P
NAME FUNCTION
32 F9 NO12 Analog Switch 12—Normally-Open Terminal
33 H11 NO11 Analog Switch 11—Normally-Open Terminal
34 J10 COM11 Analog Switch 11—Common Terminal
37 H9 COM10 Analog Switch 10—Common Terminal
38 K9 NO10 Analog Switch 10—Normally-Open Terminal
39 J8 COM9 Analog Switch 9—Common Terminal
40 G8 NO9 Analog Switch 9—Normally-Open Terminal
41 H7 COM8 Analog Switch 8—Common Terminal
42 K7 NO8 Analog Switch 8—Normally-Open Terminal
43 K5 NO7 Analog Switch 7—Normally-Open Terminal
44 H5 COM7 Analog Switch 7—Common Terminal
45 G4 NO6 Analog Switch 6—Normally-Open Terminal
46 J4 COM6 Analog Switch 6—Common Terminal
47 K3 NO5 Analog Switch 5—Normally-Open Terminal
48 H3 COM5 Analog Switch 5—Common Terminal
DIN DN+1 DN-1
DN
50%
50% 50%
50%
50%50%
50%
90%
10%
50%
tCS
tWL
tDS tDH
tDO
tOFF
tWC
tON
50%
LE
CLK
DOUT
OFF
ON
SWITCH
CLR
Figure 1. Serial Interface Timing
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
10 Maxim Integrated
Detailed Description
The MAX14802/MAX14803/MAX14803A provide high-
voltage switching on 16 channels for ultrasound imag-
ing and printer applications. The devices utilize
HVCMOS process technology to provide 16 high-volt-
age low-charge-injection SPST switches, controlled by
a digital interface. Data is clocked into an internal 16-
bit shift register and retained by a programmable latch
with enable and clear inputs. A power-on-reset function
ensures that all switches are open on power-up.
The MAX14802/MAX14803/MAX14803A operate with a
wide range of high-voltage supplies including: VPP/VNN
= +100V/-100V, +200V/0V, or +40V/-160V. The digital
interface operates from a separate +2.7V to +5.5V VDD
supply. Digital inputs DIN, CLK, LE, and CLR operate
on the VDD supply voltage. The MAX14803/MAX14803A
provide integrated 35kΩbleed resistors on each switch
terminal to discharge capacitive loads. The MAX14802/
MAX14803/MAX14803A feature clamping diodes (at
the COM_). These clamping diodes provide overvolt-
age protection against positive overshoot.
Analog Switch
The MAX14802/MAX14803/MAX14803A allow a peak-to-
peak analog signal range from VNN to the minimum of
either VNN + 200V or (VPP - 10V). Analog switch inputs
must be unconnected, or satisfy VNN (VCOM_, VNO_)
VPP during power-up and power-down.
High-Voltage Supplies
The MAX14802/MAX14803/MAX14803A allow a wide
range of high-voltage supplies. The devices operate
with VNN from -160V to 0 and VPP from +40V to VNN +
250V. When VNN is connected to GND (single-supply
applications), the devices operate with VPP up to
+200V. The VPP and VNN high-voltage supplies are not
required to be symmetrical, but the voltage difference
(VPP - VNN) must not exceed 250V.
Bleed Resistors (MAX14803/MAX14803A)
The MAX14803/MAX14803A feature integrated 35kΩ
bleed resistors to discharge capacitive loads such as
piezoelectric transducers. Each analog switch terminal
is connected to GND with a bleed resistor.
Overvoltage Protection
The MAX14802/MAX14803/MAX14803A feature clamp-
ing diodes (at the COM_). These clamping diodes pro-
vide overvoltage protection against positive overshoot.
Serial Interface
The MAX14802/MAX14803/MAX14803A are controlled
by a serial interface with a 16-bit serial shift register
and transparent latch. Each of the 16 data bits controls
a single analog switch (Table 1). Data on DIN is
clocked with the most significant bit (MSB) first into the
shift register on the rising edge of CLK. Data is clocked
out of the shift register onto DOUT on the rising edge of
CLK. DOUT reflects the status of DIN, delayed by 16
clock cycles (Figures 1 and 2).
Latch Enable (
LE
)
Drive LE logic-low to change the contents of the latch
and update the state of the high-voltage switches
(Figure 2). Drive LE logic-high to freeze the contents of
the latch and prevent changes to the switch states. To
reduce noise due to clock feedthrough, drive LE logic-
high while data is clocked into the shift register. After
the data shift register is loaded with valid data, pulse
LE logic-low to load the contents of the shift register
into the latch.
Latch Clear (CLR)
The MAX14802/MAX14803/MAX14803A feature a latch
clear input. Drive CLR logic-high to reset the contents
of the latch to zero and open all switches. CLR does
not affect the contents of the data shift register. Pulse
LE logic-low to reload the contents of the shift register
into the latch.
Power-On Reset
The MAX14802/MAX14803/MAX14803A feature a
power-on-reset circuit to ensure all switches are open
at power-on. The internal 16-bit serial shift register and
latch are set to zero on power-up.
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
11
Maxim Integrated
DATA BITS CONTROL
BITS FUNCTION
D0
(LSB) D1 D2 D3 D4 D5 D6
D7
LE CLR SW0 SW1 SW2 SW3 SW4 SW5 SW6
SW7
LL
L OFF
HL
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
LL
L
OFF
HL
L
ON
X
XXXXXX
X
HL
HOLD PREVIOUS STATE
X
XXXXXX
X
X H OFF OFF OFF OFF OFF OFF OFF
OFF
Figure 2. Latch Enable Interface Timing
Table 1. Serial Interface Programming (Notes 5–10)
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
12 Maxim Integrated
DATA BITS CONTROL
BITS FUNCTION
D8 D9 D10 D11 D12 D13 D14
D15
(MSB) LE CLR SW8 SW9 SW10 SW11 SW12 SW13 SW14
SW15
LL
L OFF
HL
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
L
L
L OFF
H
L
LON
LL
L
OFF
HL
L
ON
X
XX X X X X
X
HL
HOLD PREVIOUS STATE
X
XX X X X X
X
X H OFF OFF OFF OFF OFF OFF OFF
OFF
Table 1. Serial Interface Programming (Notes 5–10) (continued)
X = Don’t care.
Note 5: The 16 switches operate independently.
Note 6: Serial data is clocked in on the rising edge of CLK.
Note 7: The switches go to a state retaining their present condition on the rising edge of LE. When LE is low, the shift register data
flows through the latch.
Note 8: DOUT is high when switch 15 is on.
Note 9: Shift register clocking has no effect on the switch states if LE is high.
Note 10: The CLR input overrides all other inputs.
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
13
Maxim Integrated
Applications Information
For medical ultrasound applications, see Figures 4, 5,
and 6.
Logic Levels
The MAX14802/MAX14803/MAX14803A digital inter-
face inputs CLK, DIN, LE, and CLR operate on the VDD
supply voltage.
Daisy-Chaining Multiple Devices
Digital output DOUT is provided to allow the connection
of multiple MAX14802/MAX14803/MAX14803A devices
by daisy-chaining (Figure 3). Connect each DOUT to the
DIN of the subsequent device in the chain. Connect CLK,
LE, and CLR inputs of all devices, and drive LE logic-low
to update all devices simultaneously. Drive CLR high to
open all the switches simultaneously. Additional shift reg-
isters can be included anywhere in series with the
MAX14802/MAX14803/MAX14803A data chain.
Supply Sequencing and Bypassing
The MAX14802/MAX14803/MAX14803A do not require
special sequencing of the VDD, VPP, and VNN supply
voltages; however, analog switch inputs must be
unconnected, or satisfy VNN (VCOM_, VNO_) VPP
during power-up and power-down. Bypass VDD, VPP,
and VNN to GND with a 0.1μF ceramic capacitor as
close as possible to the device.
Application Diagrams
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
CLK
DIN
CLK
LE
CLR
U10 U11 U1n
U20 U21 U2n
DOUT
DIN1
LE
CLR
DIN2 DIN
CLK
LE
CLR
DOUT DIN
CLK
LE
CLR
DOUT DIN
CLK
LE
CLR
DOUT
DIN
CLK
LE
CLR
DOUT DIN
CLK
LE
CLR
DOUT
Figure 3. Interfacing Multiple Devices by Daisy-Chaining
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
14 Maxim Integrated
Figure 4. Medical Ultrasound Application—High-Voltage Analog Switches in Probe
{D} W \\ rTw \\ rTw \\
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
15
Maxim Integrated
Figure 5. Medical Ultrasound Application—High-Voltage Analog Switches in Mainframe
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
16 Maxim Integrated
PROBE
A
HIGH-VOLTAGE TRANSMIT
2 TO 4 PER CHANNEL
HIGH-VOLTAGE
ISOLATION AND
CHANNEL SELECT
2 TO 4 PER CHANNEL
LOW-VOLTAGE RECEIVE
64 TO 128 CHANNELS
PROBE SELECTION
2 TO 4 PROBES
RELAYS
2 TO 4 RELAYS/CH/PROBE
CABLE
2 TO 4 PER CHANNEL
TRANSDUCERS
2 TO 4 PER CHANNEL
±100V MAX ±1 TO 2A MAX
MAINFRAME
+V
-V
PROBES
±1V MAX
10mA TYP
PROBE
B
PROBE
C
PROBE
D
+V
-V
+V
-V
+V
-V
+V
-V
+V
-V
+V
-V
+V
-V
Figure 6. Medical Ultrasound Application—Multiple Transmit and Isolation per Receiver Channel
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
17
Maxim Integrated
Functional Diagram
MAX14802
MAX14803
MAX14803A
16-BIT
SHIFT
REGISTER
LATCH
VDD VPP
*BLEED RESISTORS AVAILABLE ON THE MAX14803/MAX14803A ONLY.
GND VNN
LEVEL
SHIFTER
CLR VPP
COM0
NO0
VNN
*
*
VNN
DIN
CLK
DOUT
LE
LATCH LEVEL
SHIFTER
VPP
COM15
NO15
VNN
*
*
VNN
CuMm NDHJ COMB NDB COME Nus ND? COW Nm Com NUS COME MAXMSUZ MAXMSIE TOFP (7mm x 7mm)
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
18 Maxim Integrated
TOP VIEW
MAX14802
MAX14803
TQFP
(7mm x 7mm)
+13
14
15
16
17
18
19
20
21
22
23
24
VNN
N.C.
VPP
N.C.
GND
VDD
DIN
CLK
LE
CLR
DOUT
N.C.
48
47
46
45
44
43
42
41
40
39
38
37
12345678910
11 12
COM5
NO5
COM6
NO6
COM7
NO7
NO8
COM8
NO9
COM9
NO10
COM10
COM0
NO0
NO1
COM1
COM2
NO2
COM3
NO3
NO4
COM4
N.C.
N.C.
36 35 34 33 32 31 30 29 28 27 26 25
COM15
NO15
NO14
COM14
COM13
NO13
COM12
NO12
NO11
COM11
N.C.
N.C.
Pin Configurations
Maxun Ncgvaicd www.maxlmlnhflrahedmomlgackages 2| -0054 2| -0494 Note 1891
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
19
Maxim Integrated
1
A
B
C
D
E
F
G
H
J
K
234567891011
+
N.C.
N.C.
N.C.
NO1
N.C.
COM3
N.C.
NO4
N.C.
N.C.
VPP
N.C.
NO0
N.C.
COM2
N.C.
NO2
N.C.
COM4
N.C.
N.C.
N.C.
N.C.
COM1
N.C.
NO3
N.C.
COM5
N.C.
NO5
VNN
N.C.
COM0
N.C.
N.C.
N.C.
NO6
N.C.
COM6
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
COM7
N.C.
NO7
CLK
GND
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
DOUT
DIN
N.C.
N.C.
N.C.
N.C.
N.C.
COM8
N.C.
NO8
N.C.
LE
COM15
N.C.
N.C.
N.C.
NO9
N.C.
COM9
N.C.
N.C.
CLR
N.C.
COM14
N.C.
NO12
N.C.
COM10
N.C.
NO10
VDD
N.C.
NO15
N.C.
COM13
N.C.
NO13
N.C.
COM11
N.C.
N.C.
N.C.
N.C.
NO14
N.C.
COM12
N.C.
NO11
N.C.
N.C.
0.31 mm
0.5 mm
0.5 mm
WLP
(5.81mm x 5.43mm)
MAX14803A
TOP VIEW
(BUMPS ON BOTTOM)
Chip Information
PROCESS: BiCMOS
Pin Configurations (continued)
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
48 TQFP C48+6 21-0054 90-0093
110 WLP W1105B5+1 21-0494
Refer to
Application
Note 1891
Package Information
For the latest package outline information and land patterns (foot-
prints), go to www.maximintegrated.com/packages. Note that a
“+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but the
drawing pertains to the package regardless of RoHS status.
maxim Integrated"
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
20
________________________________Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
© 2013 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
MAX14802/MAX14803/MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 4/09 Initial release
1 9/09
Corrected two specifications in the Absolute Maximum Ratings section,
changed the minimum of the peak-to-peak analog signal range to “either VNN + 200V
or (VPP – 10V)”
2, 9
2 11/10
Deleted the MAX14800/MAX14801 from the entire data sheet and added the
MAX14803A; added the WLP part to the Ordering Information, Pin Configurations, Pin
Descriptions, and Package Information sections
1–19
3 8/11 Added extended temperature information; added MAX14802ECM+ to data sheet 1
4 6/13 Updated Absolute Maximum Ratings and Operating Supply Voltages 1, 2

Products related to this Datasheet

IC SWITCH SPST 48LQFP
IC SWITCH SPST 48LQFP
IC SWITCH ANLG SPST 16CH 110WMP
IC SWITCH SPST CTBGA
IC SWITCH SPST 48LQFP
IC SWITCH SPST 48LQFP
IC SWITCH SPST 16 CHAN 48TQFP
IC SWITCH SPST 16 CHAN 48TQFP