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| HV214_07 Datasheet, PDF (1/9 Pages) Supertex, Inc – 250V Low Charge Injection 8-Channel High Voltage Analog Switch | |||
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HV214
250V Low Charge Injection
8-Channel High Voltage Analog Switch
Features
⺠HVCMOS® technology for high performance
⺠Very low quiescent power dissipation -10µA
⺠Low parasitic capacitances
⺠DC to 10MHz analog signal frequency
⺠-60dB typical output off isolation at 5MHz
⺠-60dB typical off-isolation at 5MHz
⺠CMOS logic circuitry for low power
⺠Excellent noise immunity
⺠On-chip shift register, latch and clear logic
circuitry
⺠Flexible high voltage supplies
⺠Surface mount packages
Applications
⺠Medical ultrasound imaging
⺠Non-destructive evaluation
⺠Inkjet printer heads
⺠Optical MEMS modules
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 efï¬cient control of
high voltage analog signals.
The device is suitable for various combinations of high voltage
supplies, e.g., VPP/VNN: +40V/-210V, +125V/-125V, +210V/-40V.
Block Diagram
DIN
CLK
DOUT
8-Bit
Shift
Register
Level Output
Latches Shifters Switches
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
VDD
CL
LE
VNN VPP
SW0
SW1
SW2
SW3
SW4
SW5
SW6
SW7
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