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| HV2203 Datasheet, PDF (1/9 Pages) Supertex, Inc – Low Charge Injection, 8-Channel High Voltage Analog Switch | |||
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HV2203
Low Charge Injection, 8-Channel
High Voltage Analog Switch
Features
⺠HVCMOS technology for high performance
⺠3.3V or 5.0V CMOS input logic level
⺠20MHz data shift clock frequency
⺠Very low quiescent power dissipation - 10µA
⺠Low parasitic capacitance
⺠DC to 10MHz analog signal frequency
⺠-60dB typical off-isolation at 5MHz
⺠CMOS logic circuitry for low power
⺠Excellent noise immunity
⺠Cascadable serial data register with latches
⺠Flexible operating supply voltages
Applications
⺠Medical ultrasound imaging
⺠NDT metal ï¬aw detection
⺠Piezoelectric transducer drivers
⺠Inkjet printer heads
⺠Optical MEMS modules
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
efï¬cient control of high voltage analog signals.
The device is suitable for various combinations of high voltage
supplies, e.g., V /V : +40V/-120V, +80V/-80V, and +120V/-40V.
PP NN
Block Diagram
CLK
DIN
DOUT
8-BIT
SHIFT
REGISTER
LEVEL
OUTPUT
LATCHES
SHIFTERS &
CHARGE CONTROL
SWITCHES
D
LE
CLR
D
LE
CLR
D
LE
CLR
SW0
SW1
SW2
D
LE
CLR
D
LE
CLR
VDD GND LE CLR
VNN VPP
SW6
SW7
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