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Product Detailed Parameters
- Description：IC SCREEN CNTRL 12BIT 16TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Bulk
- 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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Overview
The AD7873ARUZ-REEL is a 12-bit successive approximation analog-to-digital converter (ADC) designed for resistive touch screen digitization. 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 ratiometric conversion capabilities. It utilizes a synchronous serial interface and offers a shutdown mode with maximum current consumption of 1 µA.
Feature Summary
- 12-bit resolution with 125 kSPS throughput rate
- Integrated 4-wire touch screen interface and low resistance switches
- On-chip 2.5 V reference and temperature sensor (-40°C to +85°C)
- Direct battery monitor input supporting 0 V to 6 V range
Applications
- Personal digital assistants
- Smart hand-held devices
- Touch screen monitors
- Point-of-sale terminals
- Pagers
Procurement Notes
Verify the REEL suffix indicates tape-and-reel packaging when sourcing components. Confirm that the ARUZ designation corresponds to the TSSOP package variant. Ensure compatibility with the specified operating voltage range of 2.2 V to 5.25 V for the target application environment.
Selection Notes
Select this component for applications requiring integrated touch screen control and ADC functionality in a compact form factor. Consider the 12-bit resolution and 125 kSPS speed for high-performance digitizing needs. Evaluate power requirements against the 1 µA shutdown mode if battery life is critical. Verify thermal management needs based on the TSSOP package thermal resistance characteristics.
Part Context
The AD7873 belongs to Analog Devices' family of touch screen controllers and data converters. It combines ADC functionality with specific drivers for resistive touch panels. The ARUZ suffix typically denotes the Thin Shrink Small Outline Package (TSSOP) variant within the product line.
Replacement Considerations
Consult official documentation for verified substitute part numbers. Cross-reference pinouts and electrical specifications carefully when considering alternative components.
