Product Summary

The ADS7843E 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 750mW at a 125kHz throughput rate and a +2.7V supply. The applications of the ADS7843E include personal digital assistants, portable instruments, point-of-sales terminals, pagers, touch-screen monitors

Parametrics

ADS7843E absolute maximum ratings: (1)+VCC to GND: –0.3V to +6V; (2)Analog Inputs to GND: –0.3V to +VCC + 0.3V; (3)Digital Inputs to GND: –0.3V to +VCC + 0.3V; (4)Power Dissipation: 250mW; (5)Maximum Junction Temperature: +150℃; (6)Operating Temperature Range: –40℃ to +85℃; (7)Storage Temperature Range: –65℃ to +150℃; (8)Lead Temperature (soldering, 10s): +300℃.

Features

ADS7843E features: (1)4-wire touch screen interface; (2)ratiometric conversion; (3)single supply: 2.7v to 5v; (4)up to 125khz conversion rate; (5)serial interface; (6)programmable 8- or 12-bit resolution; (7)2 auxiliary analog inputs; (8)full power-down control.

Diagrams

ADS7843E block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
ADS7843E
ADS7843E
Texas Instruments
Touch Screen Converters & Controllers Touch Scrn Ctrlr
Data Sheet
0-1: $2.51
1-25: $2.28
25-100: $1.58
100-250: $1.52
ADS7843E/250
ADS7843E/250
Texas Instruments
IC TOUCH SCRN CONTROLLER 16-SSOP
Data Sheet
Negotiable 
ADS7843EG4
ADS7843EG4
Texas Instruments
Touch Screen Converters & Controllers 4-wire Touch Screen Controller
Data Sheet
0-1: $2.51
1-25: $2.28
25-100: $2.09
100-250: $1.52
ADS7843E/2K5G4
ADS7843E/2K5G4
Texas Instruments
Touch Screen Converters & Controllers 4-wire Touch Screen Controller
Data Sheet
0-1905: $1.28
1905-2000: $1.26
2000-2500: $1.26
2500-5000: $1.21
ADS7843E/2K5
ADS7843E/2K5
Texas Instruments
Touch Screen Converters & Controllers 4-wire Touch Screen Controller
Data Sheet
0-1905: $1.28
1905-2000: $1.27
2000-2500: $1.27
2500-5000: $1.21