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| HV2301 Datasheet, PDF (1/9 Pages) Supertex, Inc – Low Charge Injection, 8-Channel, High Voltage, Enhanced Analog Switch with Bleed Resistors | |||
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Supertex inc.
HV2301
Initial Release
Low Charge Injection, 8-Channel, High Voltage,
Enhanced Analog Switch with Bleed Resistors
Features
⺠HVCMOS technology for high performance
⺠Integrated bleed resistors on the outputs
⺠8 Channels of high voltage analog switch
⺠3.3V or 5V 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
Block Diagram
General Description
The Supertex HV2301 is a low charge injection, 8-channel,
high voltage analog switch integrated circuit (IC) with bleed
resistors. The device can be used in applications requiring high
voltage switching, controlled by low voltage control signals,
such as medical ultrasound imaging, piezoelectric transducer
driver, and printers. The built-in bleed resistors eliminate
voltage built up on capacitive loads such as piezoelectric
transducers. The HV2301 is an enhanced version of the
HV232.
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
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., VPP/VNN: +40V/-160V, +100V/-100V,
and +160V/-40V.
LATCHES
D
LE
CL
LEVEL
SHIFTERS
OUTPUT
SWITCHES
SW0
D
CLK
LE
CL
SW1
8-Bit
D
DIN
Shift
LE
CL
Register
DOUT
D
LE
CL
SW2
SW6
D
LE
SW7
CL
VDD GND
LE CLR
VNN VPP
RGND
NR032106
· · · · Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: (408) 222-8888 FAX: (408) 222-4895 www.supertex.com
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