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Automotive 4-wire Touch Screen Controller


Package | PIN: DBQ | 16
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $3.39
10-24 $3.06
25-99 $2.84
100-249 $2.49
250-499 $2.34
500-749 $1.99
750-999 $1.68
1000+ $1.60


  • 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

Texas Instruments  ADS7843IDBQRQ1

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.