Automotive 4-wire Touch Screen Controller - ADS7843-Q1

ADS7843-Q1 (ACTIVE)

Automotive 4-wire Touch Screen Controller

 

Recommended alternative parts

  • TSC2013-Q1  -  I2C dual touch screen controller with rotate & zoom gesture capability

Description

The ADS7843-Q1 is a 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface and low on-resistance switches for driving touch screens. Typical power dissipation is 750µW at a 125kHz throughput rate and a +2.7V supply. The reference voltage (VREF) can be varied between 1V and +VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces typical power dissipation to under 0.5µW. The ADS7843-Q1 is specified down to 2.7V operation.

Low power, high speed, and onboard switches make the ADS7843-Q1 ideal for battery-operated systems such as personal digital assistants with resistive touch screens and other portable equipment. The ADS7843-Q1 is available in an SSOP-16 package and is specified over the –40°C to +85°C temperature range.

Features

  • Qualified for Automotive Applications
  • Ratiometric Conversion
  • Single Supply: 2.7V to 5V
  • Up to 125kHz Conversion Rate
  • Serial Interface
  • Programmable 8- or 12-Bit Resolution
  • 2 Auxiliary Analog Inputs
  • Full Power-Down Control

View more

Parametrics Compare all products in Touch Screen Controllers

 
Touch Panel
SAR ADC Resolution (Bits)
Input Type
Interface
Vref (Int/Ext)
Control Interface
Operating Temperature Range (C)
Pin/Package
Rating
ADS7843-Q1
4-Wire   
12   
Single-Ended   
Serial   
Int   
SPI   
-40 to 125   
16SSOP   
Automotive   

Other qualified versions of ADS7843-Q1

Version Part Number Definition
Catalog ADS7843 TI's standard catalog product

Featured tools and software