Microchip HV2803 Handleiding

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 2017-2019 Microchip Technology Inc.DS20005721C-page 1

HV2803/HV2903/HV2904

Features

•32-Channel, High-Voltage Analog Switch

•No High-Voltage Supplies Required

•32-Channel, Single-Pole, Single-Throw (SPST)

Individual Switching or Bank Switching

•3.3V CMOS Input Logic Level

•66 MHz Data Shift Clock Frequency

•Silicon-on-Insulator (SOI) High-Voltage

Technology for High Performance

•Standby mode for Low-Power Dissipation

•Low-Parasitic Capacitance

•DC to 50 MHz Analog Small-Signal Frequency

•200kHz to 50MHz Large-Signal Frequency

•-70dB Typical Off Isolation at 5.0 MHz

•Excellent Noise Immunity

•Cascadable Serial Data Register with Latches

•Integrated Bleed Resistors on the Outputs (both

sides for HV2903, one side for HV2904)

Applications

•Medical Ultrasound Imaging

•Nondestructive Testing (NDT) Metal Flaw

Detection

•Piezoelectric Transducer Drivers

•Inkjet Printer Heads

•Optical MEMS Modules

General Description

The HV2803/HV2903/HV2904 devices are low harmonic

distortion, low charge injection, 32-channel, high-voltage

analog switches without high-voltage supplies. They are

intended for use in applications requiring high-voltage

switching controlled by low-voltage control signals, such

as medical ultrasound imaging, driving piezoelectric

transducers and printers.

The HV2903 device has integrated bleed resistors at

both sides of the switches; the HV2904 device has

bleed resistors at one side only, while the HV2803

device has no bleed resistors. The bleed resistor

eliminates voltage build-up on capacitive loads, such

as piezoelectric transducers.

The HV2803/HV2903/HV2904 devices have two

modes of operation determined by the MODE pin input.

MODE input high enables an individual Switching

mode of 32-channel SPST switches and MODE input

low enables a Bank Switching mode of 16-Pole

Double-Throw (16PDT) switches to support bank

switching for probe selection.

The devices require only ±6V or ±5V low-voltage

supplies and no high-voltage supplies. However, all the

analog switches can transmit ±100V high-voltage pulses.

Package Type

12 3 4 5 6 7 8 910111213

A

B

C

D

E

F

G

H

P

J

K

L

M

14

N

HV2803/HV2903/HV2904

12 x 12 x 1.20 mm TFBGA

(Top View*)

*See Section 2.0 “Package Pin Configuration

and Function Description”.

No High-Voltage Bias, Low Harmonic Distortion,

32-Channel, High-Voltage Analog Switch

Product specificaties