HV20320_13 Datasheet, PDF (1/9 Pages) Supertex, Inc – Low Charge Injection 8-Channel High Voltage Analog Switch

Supertex inc.
Low Charge Injection
8-Channel High Voltage Analog Switch
HV20320
Features
►►HVCMOS^® technology for high performance
►►Very low quiescent power dissipation (-10µA)
►►Output on-resistance typically 22Ω
►►Low parasitic capacitances
►►DC to 50MHz small signal frequency response
►►-60dB typical output off isolation at 5.0MHz
►►CMOS logic circuitry for low power
►►Excellent noise immunity
►►On-chip shift register, latch and clear logic circuitry
►►Flexible high voltage supplies
Applications
►► Medical ultrasound imaging
►► Piezoelectric transducer drivers
General Description
This device is a low charge injection, 8-channel, high-voltage
analog switch integrated circuit (IC) intended for use in appli-
cations requiring high voltage switching controlled by low volt-
age control signals, such as ultrasound imaging and printers.
Input data is shifted into an 8-bit shift register which can then
be retained in an 8-bit latch. To reduce any possible clock
feed-through noise, Latch Enable Bar (LE) should be left high
until all bits are clocked in. Using HVCMOS^® technology, this
switch combines high voltage bilateral DMOS switches and
low power CMOS logic to provide efficient control of high volt-
age analog signals.
These ICs are suitable for various combinations of high volt-
age supplies, e.g., V_PP/V_NN : +50V/-150V, or +100V/-100V.
Block Diagram
DIN
CLK
8-Bit
Shift
Register
DOUT
Level Output
Latches _{Shifters Switches}
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
SW0
SW1
SW2
SW3
SW4
SW5
SW6
SW7
Doc.# DSFP-HV20320
C071613
VDD
LE CL
VNN VPP
Supertex inc.
www.supertex.com