Datasheet > AR7646

AR7646

更新时间： 2024-11-21 08:34:19

品牌	Logo	应用领域
其他 - ETC		传感器温度传感器控制器
页数	文件大小	规格书
3页	799K
描述
12-bit Touch Panel Controller IC whit Temperature Sensor

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数据手册

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AR7646 数据手册

The wireless communication solution provider

12-bit Touch Panel Controller IC

AR7643

whit Temperature Sensor

FEATURES

Pincompatible toAR7643

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

APPLICATIONS

Touch screenmonitors

PDAs

Point-of-sales terminals

Pagers

High speed data acquisition

Portable instruments

Low power instruments

DESCRIPTION

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. The AR7646 contains all the analog and digital circuitry

necessary to complete a pen request. The AR7646 features temperature,

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.

12 3

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