HV214
HV214
Initial Release
250V Low Charge Injection
8-Channel High Voltage Analog Switch
Features
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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
CMOS logic circuitry for low power
Excellent noise immunity
On-chip shift register, latch and clear logic circuitry
Flexible high voltage supplies
Surface mount package available
®
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
Piezoelectric transducer drivers
Inkjet printer heads
Optical MEMS modules
Block
Diagram
D
IN
CLK
LATCHES
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
LEVEL
SHIFTERS
OUTPUT
SWITCHES
SW0
SW1
SW2
SW3
8 BIT
SHIFT
REGISTER
SW4
SW5
D
OUT
SW6
SW7
V
NN
V
PP
V
DD
LE
CL
07/26/02
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
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SUPERTEX [ Supertex, Inc ]
