Hot-selling and scarce AD7873ACPZ Touch Screen Digitizer QFN16 spot stock

Product Descriptions

The AD7873 is a 12-bit successive approximation ADC with asynchronous serial interface and low on resistance switches fordriving touch screens.The AD7873 operates from a single 2.2 Vto 5 .25 V power supply and features throughput rates greaterthan 125 kSPS 

The AD7873 features direct battery measurement,temperaturemeasurement,and touch-pressure measurement.The AD7873also has an on-board reference of 2.5 V that can be used for theauxiliary input,battery monitor,and temperature measurementmodes .When not in use,the internal reference can be shutdown to conserve power.An external reference can also beapplied and can be varied from 1 V to VCC,while the analoginput range is from 0 V to VREF .The device includes a shutdownmode that reduces the current consumption to less than 1 µA .

The AD7873 features on-board switches.This,coupled with lowpower and high speed operation,makes the device ideal forbattery-powered systems such as personal digital assistants withresistive touch screens and other portable equipment .The partis available in a 16-lead 0.15" quarter size outline package(QSOP),a 16-lead thin shrink small outline package (TSSOP),and a 16-lead lead frame chip scale package (LFCSP).

Product Features

4-wire touch screen interface

On-chip temperature sensor: −40°C to +85°C

On-chip 2.5 V reference

Direct battery measurement (0 V to 6 V)

Touch-pressure measurement

Specified throughput rate of 125 kSPS

Single supply, VCC of 2.2 V to 5.25 V

Ratiometric conversion

High speed serial interface

Programmable 8-bit or 12-bit resolution

One auxiliary analog input

Shutdown mode: 1 µA max

16-lead QSOP, TSSOP, and LFCSP packages

Product Applications

Personal digital assistants

Smart hand-held devices

Touch screen monitors

Point-of-sale terminals

Pagers

Product Specification

Product Photos

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