AR7646 ETC, AR7646 Datasheet

AR7646

Manufacturer Part Number

AR7646

Description

12-bit Touch Panel Controller IC whit Temperature Sensor

Manufacturer

ETC

Datasheet

1.AR7646.pdf (3 pages)

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Company:

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AR7646

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Download datasheet (785Kb)

12-bit Touch Panel Controller IC

whit Temperature Sensor

FEATURES

DESCRIPTION

APPLICATIONS

ƒÜ Touch screen monitors

ƒÜ PDAs

ƒÜ Point-of-sales terminals

ƒÜ Pagers

ƒÜ High speed data acquisition

ƒÜ Portable instruments

ƒÜ Low power instruments

The AR7646 Touch Screen Controller IC is an advanced version of the

AR7643. The AR7646 is a 12-bit SAR analog-to-digital converter (ADC) with

SPI serial interface and low on-resistance drivers for 4-wire resistive touch

panels.

The AR7646 is a highly integrated controller for portable applications which

use 4-wire resistive touch panels such as PDAs, portable instruments, cellular

phones, etc.

necessary to complete a pen request.

battery monitor and touch-pressure measurements and also provides an

internal 2.5 V reference that may be turned ON or OFF independently of the

ADC.

The AR7646 consumes only 405 mW (internal reference OFF) at a 125 KHz

sample rate and a 2.7 V supply and consumes power less than 2.7 mW in

shutdown mode. The AR7646 is guaranteed down to 2.2 V supply. The

AR7646 is provided in a very small 16-lead SSOP package and is guaranteed

over the temperature range from 40 to +85°C.

Pin compatible to AR7643

Serial interface

4-wire touch screen interface

Embedded touch panel drivers

Internal 2.5 V reference

Direct battery measurement ( 0 V to 6 V)

Touch-pressure measurement

One auxiliary analog input

On-chip temperature sensor

2.2 V to 5.5 V supply voltage

12-bit analog to digital converter

Programmable 8 or 12 bit resolution

Up to 125 KHz conversion rate

Full power down control

SSOP-16 package

The AR7646 contains all the analog and digital circuitry

The wireless communication solution provider

The AR7646 features temperature,

AR7643

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