TWL1103GQER

Overview

The TWL1103GQER is a voice-band audio processor (VBAP) designed for analog and digital wireless handsets. It integrates transmit encoding A/D conversion, receive decoding D/A conversion, and filtering. The device supports 15-bit linear or 8-bit companded (µ-law/A-law) data modes selectable via an I2C interface. Key features include two differential microphone inputs, one differential earphone output, and one single-ended earphone output. It operates on a 2.7V to 3.3V supply within an industrial temperature range of -40°C to 85°C.

Feature Summary

• Integrated voice-band audio processing with programmable gain amplifiers for transmit, receive, sidetone, and volume control
• Supports 15-bit linear or 8-bit companded (µ-law/A-law) data formats via I2C interface
• Includes dual-tone multifrequency (DTMF) and single tone generator with pulse density modulated buzzer output
• Features internal phase-locked loop generating 10.24-MHz clock from 2.048-MHz master clock input

Applications

• Analog wireless handsets
• Digital wireless handsets
• Telecommunications applications

Procurement Notes

Verify the package designation GQE corresponds to the 80-pin MicroStar Junior BGA configuration. Confirm the suffix GQER indicates tape and reel packaging as specified in local product fields. Ensure compatibility with the required 2.048-MHz master clock input and I2C bus pull-up resistor requirements.

Selection Notes

Select this component for voice-band communication systems requiring integrated A/D and D/A conversion. Ensure the design accommodates separate analog and digital power supplies (AVDD, DVDD, EARVDD) for noise isolation. Verify that the host controller can manage the I2C interface for register configuration unless utilizing the default power-up mode via the PWRUPSEL terminal.

Part Context

The TWL1103 belongs to Texas Instruments' VBAP family, designed specifically for mobile phone audio paths. The GQER suffix denotes the 80-ball MicroStar Junior BGA package variant, distinct from the 32-pin TQFP version. This integration reduces external component count by combining filters, modulators, and earphone amplifiers into a single chip.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.