HV2901 Datasheet, PDF (1/9 Pages) Supertex, Inc – Low Charge Injection 32-Channel High Voltage Analog Switch with Bleed Resistors

Supertex inc.
HV2901
Low Charge Injection 32-Channel
High Voltage Analog Switch with Bleed Resistors
Features
►►32-channel high voltage analog switch
►►Integrated bleed resistors on the outputs
►►2:1 Multiplexer / Demultiplexer
►►3.3V or 5.0V CMOS input logic level
►►20MHz data shift clock frequency
►►HVCMOS technology for high performance
►►Very low quiescent power dissipation -10µA
►►Low parasitic capacitance
►►DC to 50MHz analog signal frequency
►►-60dB typical OFF-isolation at 5.0MHz
►►CMOS logic circuitry for low power
►►Excellent noise immunity
►►Cascadable serial data register with latches
►►Flexible operating supply voltages
Applications
►► Medical ultrasound imaging
►► NDT metal flaw detection
►► Piezoelectric transducer drivers
►► Inkjet printer heads
►► Optical MEMS modules
General Description
The Supertex HV2901 is a low charge injection 32-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 driver, and printers. The bleed resistors eliminate voltage
built up on capacitive loads such as piezoelectric transducers.
Input data are shifted into a 32-bit shift registers that can then be
retained in a 32-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 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/-160V, +100V/-100V, and +160V/-40V.
Block Diagram
CLK
32-Bit
DIN
Shift
Register
DOUT
Latches
D
LE
CLR
Level _Output
Shifters _Switches
D
LE
CLR
D
LE
CLR
D
LE
CLR
SW0
Y01
SW1
SW2
Y23
SW3
D
SW28
LE
CLR
Y2829
D
LE
CLR
SW29
D
SW30
LE
CLR
Y3031
D
LE
CLR
SW31
Doc.# DSFP-HV2901
B011713
VDD GND
LE CLR
VNN VPP
RGND
Supertex inc.
www.supertex.com