Supertex inc.

Supertex inc.

1

NR032106

HV2201

Initial Release

Low Charge Injection 8-Channel

Enhanced High Voltage Analog Switch

Features

HVCMOS technology for high performance

8 Channels of high voltage analog switch

3.3V or 5V CMOS input logic level

20MHz data shift clock frequency

Very low quiescent power dissipation-10µA

Low parasitic capacitance

DC to 10MHz 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

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General Description

The Supertex HV2201 is a low charge injection, 8-channel,

high voltage analog switch integrated circuit (IC). The

device can be used in applications requiring high voltage

switching controlled by low voltage control signals, such as

medical ultrasound imaging, piezoelectric transducer drivers,

and printers. The HV2201 is an enhanced version of the

HV20220.

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

+40V/-160V, +100V/-100V,

and +160V/-40V.

Block Diagram

D

LE

CL

SW0

D

LE

CL

SW1

D

LE

CL

SW2

D

LE

CL

SW6

D

LE

CL

SW7

CLK

8-BIT

SHIFT

REGISTER

LATCHES

LEVEL

SHIFTERS

OUTPUT

SWITCHES

LE

CLR