The AIC111RHB IC design specification serves to provide product development teams with a guideline for how the AIC111RHB IC is specified and programmable options that are available. The document outlines a top-level block description of the IC along with system specifications and functions. Individual block descriptions and target specifications are also outlined.
The Texas Instruments AIC111RHB is a TI μPower DSP compatible, or microcontroller compatible audio codec product, or analog interface circuit. The AIC111RHB is part of a comprehensive family of DSP/μC based high-performance analog interface solutions. The AIC111RHB is targeted primarily at personal medical devices, such as hearing instruments, aural preprocessing applications, and low-power headset applications. The AIC111RHB is used in any design requiring a programmable time constant PGA/compressor interface, high dynamic range analog-to-digital converter, an external DSP/μC handling signal processing, or a low distortion digital-to-analog converter with a balanced H-Bridge speaker driver. It supports a CMOS digital interface tailored for TI DSPs with the McBSP protocol such as TMS320VC54x? DSP family and SPI-based controllers such as TI MSP430x family of microcontrollers. The AIC111RHB also has an external microphone or sensor supply and bias and power supply up low-battery monitor indicator.
The AIC111RHB comes in a 32-pin QFN 5×5-mm package. A 32-pad solder ball bumped flip chip die that comes in waffle packs or tape and reel is in preview and will be available 3rd quarter 2003.
Feature
- Single Channel Codec
- Noise Shaped Delta Sigma ADC and DAC Technology
- Low Supply Voltage and Current:
- 1.3-V Typical Power Supply
- 350-μA Typical Supply Current Drain
- Power Supply Up Monitor and Low Battery Monitor That Also Automatically Shuts Off H-Bridge Output When Battery Decays Below 1.05 V in a Nontransient Manner
- Typical 2.4-μVrms Input Referred Noise With 0.01% Total Harmonic Distortion for Front End and 108-dB Dynamic Range
- ADC Has 87-dB Dynamic Range With 73-dB Total Harmonic Distortion 100 Hz–10 kHz, 40-kHz Sampling Rate
- Typical 55-dB PSRR 100 Hz to 10 kHz for Analog Front End
- Low Noise Programmable Gain Amplifier/Compressor Front End With Programmable Fast and Slow Attack and Decay Rates With Dual or Single Attack and Decay Rate Option
- Typical Output Noise of 12 μVrms With 0.05% Total Harmonic Distortion for Delta Sigma DAC and H-Bridge Output Driver
- Low Jitter Oscillator That Generates all Internal Clocks and Generates 5-MHz Output DSP/μC Clock
- Regulated Bandgap Voltage Reference
- Programmable Functionality via Digital Serial Interface
- McBSP Interface, DSP Protocol
- TI TMS320VC54x?, TMS320VC55x? DSPs
- SPI Interface, Microcontroller Protocol
- TI MSP430xx
- External Chip Power Down and Reset
- Available in:
- 32-Pin QFN 5×5-mm Plastic Package
- 32-Pad Bumped Die in Waffle Pack (wafer scale packaging)
- APPLICATIONS
- Hearing Instruments
- Personal Medical Devices
- Hearing Protection
- Aural Processing
- Low-Power Headsets
