HV214
250V Low Charge Injection
8-Channel High Voltage Analog Switch
Features
HVCMOS
®
technology for high performance
Very low quiescent power dissipation -10µA
Low parasitic capacitances
DC to 10MHz analog signal frequency
-60dB typical output off isolation at 5MHz
-60dB typical off-isolation at 5MHz
CMOS logic circuitry for low power
Excellent noise immunity
On-chip shift register, latch and clear logic
circuitry
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Flexible high voltage supplies
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Surface mount packages
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General Description
The Supertex HV214 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 control
signals, such as medical ultrasound imaging, piezoelectric transducer
drivers, inkjet printer heads and optical MEMS modules.
Input data is shifted into an 8-bit shift register that can then be retained
in an 8-bit latch. To reduce any possible clock feedthrough noise, the
latch enable bar should be left high until all bits are clocked in. Data
are 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/-210V, +125V/-125V, +210V/-40V.
Applications
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Medical ultrasound imaging
Non-destructive evaluation
Inkjet printer heads
Optical MEMS modules
Block Diagram
D
IN
Level
Output
Latches Shifters Switches
D
LE
CL
SW0
D
LE
CL
SW1
CLK
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
SW2
8-Bit
Shift
Register
SW3
SW4
SW5
D
OUT
SW6
SW7
V
DD
LE
CL
V
NN
V
PP
SUPERTEX [ Supertex, Inc ]
