ADI AD7843ARQZ

4 线电阻式12 b串行2.2V ~ 5.25V-40°C ~ 85°C

Overview

The AD7843ARQZ is a 12-bit successive-approximation ADC with a synchronous serial interface and low on resistance switches for driving touch screens. The part operates from a single 2.2 V to 5.25 V power supply and features throughput rates greater than 125 kSPS. The external reference applied to the AD7843ARQZ can be varied from 1 V to +VCC, while the analog input range is from 0 V to VREF. The device includes a shutdown mode that reduces the current consumption to less than 1 µA. This part is available in a 16-lead 0.15" Quarter Size Outline (QSOP) package and a 16-lead Thin Shrink Small Outline (TSSOP) package. 

Also see the AD7843ARQZ sister part, which is the AD7873. This part is similar to the AD7843ARQZ but has added functionality such as an on-chip temperature sensor (-40°C to + 85°C), on-chip 2.5 V reference and direct battery and touch-pressure measurement.

Features

Bulk Package

Surface Mount Mounting Type

Applications

There are a lot of Analog Devices Inc.
AD7843ARQZ Touch Screen Controllers applications.

• Cell Phones
• Digital Multimeters, PLC's (Programming Logic Controllers)
• RADAR processing, digital oscilloscopes
• CMOS Image sensors for mobile applications
• Medical Instrumentation and medical imaging
• Music recording
• Digital signal processing
• Scientific instruments
• Rotary encoder
• Displaying