Application Notes:
AN-858: AD7142 Sensor Board In-Line Production Test Procedure (pdf, 127,484 bytes)
This application note describes the in-line testing procedure for the AD7142 sensor board.
AN-857: Introduction to AD7142 Host Software Requirements (pdf, 78,627 bytes)
This document describes the AD7142 host processor software requirements to support the capacitance sensor interfaces listed in Table 1.
AN-856: AD7142 Applications Using Sensor Buttons (pdf, 125,149 bytes)
This application note describes the host processor requirements to support sensor button interfaces.
AN-854: Sensor PCB Design Guidelines for the AD7142 and AD7143 Capacitance-to-Digital Converters (pdf, 596,423 bytes)
The AD7142 and AD7143 are integrated capacitance-to-digital converters (CDC) with on-chip environmental calibration for use in systems requiring a novel user input method. The AD7142 and AD7143 can interface to external capacitance sensors implementing functions such as capacitive buttons, sliders, or scroll wheels.
AN-833: Using the AD7142 and a Capacitive Sensor to Develop a Single-Push Digital Shutter Button (pdf, 101,815 bytes)
This application note describes how the AD7142 can be combined with a capacitive sensor ring to implement a single-position digital camera shutter button similar to a traditional 35 mm SLR camera.
AN-830: Factors Affecting Sensor Response (pdf, 165,786 bytes)
Capacitance sensing has the potential to replace current user input mechanisms in consumer devices.
AN-829: Environmental Compensation on the AD7142: The Effects of Temperature and Humidity on Capacitance Sensors (pdf, 104,433 bytes)
This application note describes the importance of on-chip logic by quantifying the effects changing environmental factors have on typical sensor configurations.
speaker when powered by a V single supply. Its current drive, sound quality, and heat dissipation are substantially improved over earlier integrated speaker amplifiers. 
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