Microchip HV2621 Handleiding

Bekijk gratis de handleiding van Microchip HV2621 (26 pagina’s), behorend tot de categorie Niet gecategoriseerd. Deze gids werd als nuttig beoordeeld door 84 mensen en kreeg gemiddeld 4.8 sterren uit 2 reviews. Heb je een vraag over Microchip HV2621 of wil je andere gebruikers van dit product iets vragen? Stel een vraag

 2019 Microchip Technology Inc.DS20006082A-page 1

HV2621/HV2721/HV2722

Features

•300V,16-Channel High-Voltage Analog Switch

•3.3V or 5.0V CMOS Input Logic Level

•33 MHz Data Shift Clock Frequency

•Very Low Quiescent Current (10µA)

•Low Parasitic Capacitance

•DC to 50 MHz Analog Small-Signal Frequency

•-60dB Typical Off Isolation at 5.0 MHz

•Excellent Noise Immunity

•Cascadable Serial Data Register with Latches

•Flexible Operating Supply Voltage

•Integrated Bleed Resistors on the Outputs (both

sides for HV2721, one side only for HV2722)

Applications

•Medical Ultrasound Imaging

•Nondestructive Testing (NDT) Metal Flaw

Detection

•Multi-Layer Printed Circuit Board (PCB) Tester

•Piezoelectric Transducer Drivers

•Inkjet Printer Head

•Optical MEMS Module

General Description

The HV2621/HV2721/HV2722 devices are 300V,

low-charge injection, 16-channel, high-voltage analog

switches. These devices are designed for use in

applications requiring high-voltage switching

controlled by low-voltage control signals, such as

medical ultrasound imaging, piezoelectric transducer

drivers. HV2621/HV2721 are almost identical to

HV2601/2701 but have larger signal range. If the

VPP/VNN = ±150V, HV2621/HV2721/HV2722 can pass

the analog signal up to ±135V.

The HV2721 has integrated bleed resistors on both

sides of the switches. HV2722 has integrated bleed

resistors on one side, SWxA only. HV2621 has no

bleed resistors. The bleed resistor eliminates voltage

build-up on capacitive loads such as piezoelectric

transducers.

Input data are shifted into a 16-bit shift register that

can then be retained in a 16-bit latch. To change all the

switch state at the same time, the latch enable bar

should be left high until all bits are clocked in. The

input data are clocked in at the rising edge of the

clock. After all bits are clocked in to the shift register, a

negative pulse of the latch enable bar changes all the

switch ON/OFF states defined by input data at the

same time. Using the HVCMOS technology, these

devices combine 300V high-voltage bilateral DMOS

switches and low-power CMOS logic to provide

efficient control of high-voltage analog signals.

These devices are suitable for various combinations of

high-voltage supplies, e.g., VPP/VNN: +60V/-240V,

+150V/-150V, and +260V/-40V.

Package Types

1

64

HV2621/HV2721/HV2722

9x9x1.0mm QFN

(TOP VIEW)

300V, Low-Charge Injection, 16-Channel,

High-Voltage Analog Switch

Product specificaties