ADS7846

更新时间： 2024-11-09 12:21:23

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
30页	1034K
描述
TOUCH SCREEN CONTROLLER

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数据手册
替代型号

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ADS7846 数据手册

ADS7846

SBAS125H – SEPTEMBER 1999 – REVISED JANUARY 2005

TOUCH SCREEN CONTROLLER

DESCRIPTION

FEATURES

● SAME PINOUT AS ADS7843

The ADS7846 is a next-generation version to the industry

standard ADS7843 4-wire touch screen controller. The

ADS7846 is 100% pin-compatible with the existing ADS7843,

and drops into the same socket. This allows for easy upgrade

of current applications to the new version. Only software

changes are required to take advantage of the added fea-

tures of direct battery measurement, temperature measure-

ment, and touch-pressure measurement. The ADS7846 also

has an on-chip 2.5V reference that can be used for the

auxiliary input, battery monitor, and temperature measure-

ment modes. The reference can also be powered down when

not used to conserve power. The internal reference operates

down to 2.7V supply voltage while monitoring the battery

voltage from 0V to 6V.

● 2.2V TO 5.25V OPERATION

● INTERNAL 2.5V REFERENCE

● DIRECT BATTERY MEASUREMENT (0V to 6V)

● ON-CHIP TEMPERATURE MEASUREMENT

● TOUCH-PRESSURE MEASUREMENT

● QSPI^TM/SPI^TM3-WIRE INTERFACE

● AUTO POWER-DOWN

● TSSOP-16, SSOP-16, QFN-16,

AND VFBGA-48 PACKAGES

APPLICATIONS

● PERSONAL DIGITAL ASSISTANTS

● PORTABLE INSTRUMENTS

● POINT-OF-SALE TERMINALS

● PAGERS

The low-power consumption of < 0.75mW (typ at 2.7V,

reference off), high speed (up to 125kHz clock rate), and on-

chip drivers make the ADS7846 an ideal choice for battery-

operated systems such as personal digital assistants (PDAs)

with resistive touch screens, pagers, cellular phones, and

other portable equipment. The ADS7846 is available in the

small TSSOP-16, SSOP-16, QFN-16, and VFBGA-48 pack-

ages and is specified over the –40°C to +85°C temperature

range.

● TOUCH SCREEN MONITORS

● CELLULAR PHONES

US Patent No. 6246394

QSPI and SPI are registered trademarks of Motorola.

PENIRQ

+V_CC

X+

Temperature

SAR

X–

Sensor

Y+

ADS7846

DOUT

Y–

BUSY

Comparator

6-Channel

MUX

Serial

Data

Out

CDAC

DCLK

DIN

Battery

Monitor

BAT

AUX

Internal 2.5V

Reference

V_REF

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

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ADS7846 替代型号

型号	品牌	替代类型	描述	数据表
TSC2046E	TI	功能相似	具有低压数字 I/O 和扩展 ESD 保护的 4 线触摸屏控制器

与ADS7846相关器件

型号	品牌	获取价格	描述	数据表
ADS7846E	BB	获取价格	TOUCH-SCREEN CONTROLLER
ADS7846E	TI	获取价格	TOUCH SCREEN CONTROLLER
ADS7846E/2K5	BB	获取价格	TOUCH-SCREEN CONTROLLER
ADS7846E/2K5	TI	获取价格	TOUCH SCREEN CONTROLLER
ADS7846E/2K5G4	BB	获取价格	TOUCH-SCREEN CONTROLLER
ADS7846E/2K5G4	TI	获取价格	TOUCH SCREEN CONTROLLER
ADS7846E2K5	BB	获取价格	TOUCH SCREEN CONTROLLER
ADS7846E2K5	TI	获取价格	TOUCH SCREEN CONTROLLER
ADS7846E2K5G4	TI	获取价格	TOUCH SCREEN CONTROLLER
ADS7846EG4	TI	获取价格	TOUCH SCREEN CONTROLLER

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