AD7873ARUZ

$5.08

Description：IC SCREEN CNTRL 12BIT 16TSSOP
Series：-

SKU:af7a05e65e82 Category: Touch Screen Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC SCREEN CNTRL 12BIT 16TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Touchscreen：4 Wire Resistive
Resolution (Bits)：12 b
Interface：Serial
Voltage Reference：External, Internal
Voltage - Supply：2.2V ~ 5.25V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package：16-TSSOP
Current - Supply：-
Grade：-
Qualification：-

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AD7873ARUZ

Overview

The AD7873ARUZ is a 12-bit successive approximation analog-to-digital converter (ADC) designed for resistive touch screen digitizer applications. It operates from a single 2.2 V to 5.25 V supply and supports throughput rates up to 125 kSPS. The device integrates on-chip switches, a 2.5 V reference, and a temperature sensor. Key features include direct battery measurement (0 V to 6 V), touch pressure sensing, and an auxiliary analog input. It utilizes a high-speed synchronous serial interface and offers programmable resolution between 8-bit and 12-bit.

Feature Summary

Integrated 4-wire touch screen interface with low on-resistance switches
On-chip 2.5 V reference and temperature sensor (-40°C to +85°C)
Direct battery monitoring capability (0 V to 6 V input range)
Shutdown mode with maximum current consumption of 1 µA

Applications

Personal digital assistants
Smart hand-held devices
Touch screen monitors
Point-of-sale terminals
Pagers

Procurement Notes

Verify the specific package variant when ordering, as the AD7873 family includes TSSOP, QSOP, and LFCSP options. Confirm that the ARUZ suffix corresponds to the 16-lead TSSOP package with industrial temperature range specifications. Ensure compatibility with system voltage levels and serial interface timing requirements before integration.

Selection Notes

Select this component for battery-powered systems requiring low power consumption and integrated touch screen driving capabilities. The ratiometric conversion mode helps eliminate errors caused by on-board switch resistances. Consider the internal reference stability and shutdown current if power efficiency is critical for the application design.

Part Context

The AD7873 belongs to the Analog Devices AD7873 series of touch screen controllers. It is functionally similar to other SAR ADCs but distinguishes itself through dedicated hardware for resistive touch panel interfacing, including built-in multiplexers for X/Y coordinates, battery voltage, and temperature sensing within a compact 16-lead form factor.