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Supertex Inc |
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., VPP/VNN : +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
Ordering Information
Part Number
Package Option
HV20230PJ-G
28-Lead PLCC
HV20230PJ-G M904
28-Lead PLCC
-G denotes a lead (Pb)-free / RoHS compliant package
Packing
38/Tube
500/Reel
Pin Configuration
4 1 28 26
HV20320
Absolute Maximum Ratings
Parameter
Value
VDD logic power supply voltage
VPP - VNN supply voltage
VPP positive high voltage supply
VNN negative high voltage supply
Logic input voltages
Analog signal range
Peak analog signal current/channel
-0.5V to +15V
220V
-0.5V to VNN +200V
+0.5V to -200V
-0.5V to VDD +0.3V
VNN to VPP
3.0A
Storage temperature
-65OC to +150OC
Power dissipation
1.2W
Absolute Maximum Ratings are those values beyond which damage to the device
may occur. Functional operation under these conditions is not implied. Continuous
operation of the device at the absolute rating level may affect device reliability. All
voltages are referenced to device ground.
28-Lead PLCC
(top view)
Product Marking
Top Marking
YY = Year Sealed
YYWW AAA
HV20320PJ
WW = Week Sealed
LLLLLLLLLL L = Lot Number
Bottom
Marking
A
C
=
=
Assembler
Country of
ID
Origin*
= “Green” Packaging
CCCCCCCCCCC *May be part of top marking
Package may or may not include the following marks: Si or
28-Lead PLCC
Typical Thermal Resistance
Package
θja
28-Lead PLCC
48OC/W
Operating Conditions
Sym
Parameter
VDD Logic power supply voltage1,3
VPP Positive high voltage supply1,3
VNN Negative high voltage supply1,3
VIH High level input voltage
VIL Low-level input voltage
VSIG Analog signal voltage peak-to-peak
TA Operating free air temperature
Notes:
1. Power up/down sequence is arbtrary except GND must be powered -up first and powered down last.
2.
3.
VRSisIGemaunsdt
be
fall
tVimNNe≤s
VofSIpGo≤wVePrPsourpfploliaetsinVgDdD,uVrinPPg,
power up/down transition.
and VNN should not be less
than
1.0msec.
Value
4.5V to 13.2V
40V to VNN +200V
-40V to -160V
VDD -1.5V to VDD
0V to 1.5V
VNN +10V toVPP -10V2
0OC to 70OC
Doc.# DSFP-HV20320
C071613
Supertex inc.
2 www.supertex.com
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