HV2203
Low Charge Injection, 8-Channel
High Voltage Analog Switch
Features
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HVCMOS technology for high performance
3.3V or 5.0V CMOS input logic level
20MHz data shift clock frequency
Very low quiescent power dissipation - 10µA
Low parasitic capacitance
DC to 10MHz analog signal frequency
-60dB typical off-isolation at 5MHz
CMOS logic circuitry for low power
Excellent noise immunity
Cascadable serial data register with latches
Flexible operating supply voltages
General Description
The Supertex HV2203 is a low charge injection 8-channel high
voltage analog switch integrated circuit (IC) intended for use in
applications requiring high voltage switching controlled by low
voltage signals, such as medical ultrasound imaging, piezoelectric
transducer driver, and printers.
Data is input into an 8-bit shift register that can then be retained
in an 8-bit latch. To reduce any possible clock feed-through noise,
the latch enable bar should be left high until all bits are clocked in.
Data is clocked in during the rising edge of the clock.
Using HVCMOS technology, this device combines high voltage
bilateral DMOS switches and low power CMOS logic to provide
efficient control of high voltage analog signals.
The device is suitable for various combinations of high voltage
supplies, e.g., V
PP
/V
NN
: +40V/-120V, +80V/-80V, and +120V/-40V.
Applications
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Medical ultrasound imaging
NDT metal flaw detection
Piezoelectric transducer drivers
Inkjet printer heads
Optical MEMS modules
Block Diagram
LEVEL
OUTPUT
SHIFTERS &
LATCHES
SWITCHES
CHARGE CONTROL
D
LE
CLR
SW0
CLK
D
LE
CLR
SW1
D
IN
8-BIT
SHIFT
REGISTER
D
LE
CLR
SW2
D
OUT
D
LE
CLR
SW6
D
LE
CLR
SW7
VDD GND
LE
CLR
VNN VPP