HV2301_11 Datasheet, PDF (1/9 Pages) Supertex, Inc – Low Charge Injection, 8-Channel, High Voltage, Enhanced Analog Switch with Bleed Resistors

Supertex inc.
HV2301
Low Charge Injection, 8-Channel, High Voltage,
Enhanced Analog Switch with Bleed Resistors
Features
►► HVCMOS technology for high performance
►► Integrated bleed resistors on the outputs
►► 8 Channels of high voltage analog switch
►► 3.3 or 5.0V CMOS input logic level
►► 20MHz data shift clock frequency
►► Very low quiescent power dissipation (-10µA)
►► Low parasitic capacitance
►► DC to 50MHz analog signal frequency
►► -60dB typical off-isolation at 5MHz
►► 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 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 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
Latches
D
LE
CL
Level
Shifters
Output
Switches
SW0
D
LE
CLK
CL
8-Bit
D
LE
DIN
Shift
CL
Register
SW1
SW2
DOUT
D
LE
CL
SW6
D
LE
SW7
CL
VDD GND LE CLR
VNN VPP
RGND
Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: [phone] ● www.supertex.com