Features: ` Single Channel Codec
` Noise Shaped Delta Sigma ADC and DAC Technology
` Low Supply Voltage and Current:
1.3-V Typical Power Supply
350-A 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-Vrms 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 Hz10 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 Vrms 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/C Clock
` Regulated Bandgap Voltage Reference
` Programmable Functionality via Digital Serial Interface
McBSP Interface, DSP Protocol
TI TMS320VC54xTM, TMS320VC55xTM 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), or Tape and Reel,
(Preview, Available 3rd Quarter 2003)
Application· Hearing Instruments
· Personal Medical Devices
· Hearing Protection
· Aural Processing
· Low-Power HeadsetsSpecifications
| |
UNIT |
| Input voltage |
AI or DI pins |
0.3 V to 4 V |
| Power supply |
VDD, power pins |
0.3 V to 4.5 V |
| Latch-up tolerance |
JEDEC latch-up (EIA/JEDS78) |
100 mA |
| Operating free-air temperature range, TA |
0°C to 70°C |
| Functional temperature range |
15°C to 85°C |
| Reflow temperature range (flip chip) |
220°C to 230°C |
| Storage temperature range, Tstg |
40°C to 125°C |
| Storage humidity |
65% R.H. |
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Specifications are assured operating at maximum device limits for QFN package only, unless otherwise specified.
DescriptionThe AIC111 IC design specification serves to provide product development teams with a guideline for how the product 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 AIC111 is a TI Power DSP compatible, or microcontroller compatible audio codec product, or analog interface circuit. It is part of a comprehensive family of DSP/C based highperformance analog interface solutions. The AIC111 is targeted primarily at personal medical devices, such as hearing instruments, aural preprocessing applications,and low-power headset applications.
The AIC111 is used in any design requiring a programmable time constant PGA/compressor interface, high dynamic range analog-to-digital converter, an external DSP/C 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 TMS320VC54xTMDSP family and SPI-based controllers such as TI MSP430x family of microcontrollers.
The AIC111 also has an external microphone or sensor supply and bias and power supply up low-battery monitor
indicator.
AIC111 Data Sheet
