Manufacturer Part Number
AD7843ARQ
Manufacturer
Analog Devices, Inc.
Introduction
The AD7843 is a 12-bit, 4-wire touch screen controller that provides both a digital X and Y coordinate. It incorporates an on-chip 1.25V reference and is capable of interfacing directly with resistive touch screens.
Product Features and Performance
12-bit resolution
Supports 4-wire touch screens
On-chip 1.25V reference
Operates from 2.2V to 5.25V supply
Low power operation
Automatic touch pressure sensing
On-chip temperature sensor
Supports up to 4096 x 4096 touch screen resolution
Product Advantages
Accurate touch position detection
Low power consumption
Simple interface to microcontrollers
Integrated temperature sensing
Key Technical Parameters
12-bit resolution
2V to 5.25V supply voltage
-40°C to 85°C operating temperature range
16-QSOP package
Quality and Safety Features
Meets industrial temperature range requirements
Robust design for reliable operation
Compatibility
Compatible with resistive touch screens
Application Areas
Portable electronics
Industrial control panels
Point-of-sale (POS) terminals
Human-machine interfaces (HMIs)
Product Lifecycle
The AD7843 is a mature product and is still in active production. Replacement or upgrade options may be available from Analog Devices or other touch screen controller suppliers.
Key Reasons to Choose This Product
High-performance 12-bit touch screen controller
Wide operating voltage and temperature range
Integrated features like temperature sensing and pressure detection
Simple interface and low power consumption
Proven reliability and long-term availability
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