HV2761 Datasheet, PDF (1/8 Pages) Supertex, Inc – Low Charge Injection, 24-Channel, High Voltage Analog Switch with Bleed Resistors

Supertex inc.
HV2761
Low Charge Injection, 24-Channel,
High Voltage Analog Switch with Bleed Resistors
Features
►► 24-channel high voltage analog switch
►► Integrated bleed resistors on the outputs
►► 3.3 or 5.0V CMOS input logic level
►► 3:1 MUX-deMUX with 8 states
►► 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
►► Piezoelectric transducer drivers
►► Inkjet printer heads
►► Optical MEMS modules
General Description
The Supertex HV2761 is a low charge injection, 24-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, and printers. The bleed resistors
eliminate voltage built up on capacitive loads such as piezoelectric
transducers.
Input data is shifted into a 24-bit shift register that can then be
retained in a 24-bit latch. To reduce any possible clock feed through
noise, the latch enable (LE) 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
DIN
DOUT
24-Bit
Shift
Register
Latches
D
LE
CLR
D
LE
CLR
D
LE
CLR
D
LE
CLR
D
LE
CLR
D
LE
CLR
Level _Output
Shifters _Switches
SW0
SW1
Y0
SW2
SW3
SW4
Y1
SW5
Doc.# DSFP-HV2761
NR010913
D
LE
CLR
D
LE
CLR
D
LE
CLR
VDD GND LE CLR
VNN VPP
SW21
SW22
Y7
SW23
RGND
Supertex inc.
www.supertex.com