Overview
The TLV320AIC23B, also available as the TLV320AIC23IPWRG4, is a high-performance stereo audio codec designed by Texas Instruments. This component is renowned for its highly integrated analog functionality, making it an ideal choice for portable digital audio-player and recorder applications, such as MP3 players and other solid-state audio devices. The codec utilizes multibit sigma-delta technology with integrated oversampling digital interpolation filters, ensuring high-fidelity audio recording and playback capabilities.
Key Specifications
| Specification | Details |
|---|---|
| Signal-to-Noise Ratio (SNR) | Up to 90 dB for ADC, up to 100 dB for DAC (A-weighted at 48 kHz) |
| Sampling Frequency | 8 kHz to 96 kHz |
| Data Transfer Word Lengths | 16, 20, 24, and 32 bits |
| Core Digital Supply | 1.42 V to 3.6 V |
| Buffer and Analog Supply | 2.7 V to 3.6 V |
| Oversampling Rates | Industry-standard 256 fs and 384 fs; unique rates of 250 fs and 272 fs |
| Headphone Amplifier Output | 30 mW per channel into 32 Ω |
| Power Consumption | Less than 23 mW during playback; standby <150 µW; power-down <15 µW |
| Package Type | 32-Pin MicroStar Junior, 28-Pin TSSOP |
Key Features
- High-performance stereo codec with multibit sigma-delta ADC and DAC
- Glueless interface to TI McBSPs and support for I²S, MSB, or LSB justified-data transfers
- Integrated stereo-line inputs with analog bypass path, stereo headphone amplifier with analog volume control and mute
- Complete electret-microphone-capsule biasing and buffering solution with adjustable and programmable gain microphone amplifiers
- Flexible power management with selective shutdown of codec functions to extend battery life
- Internal oscillator with support for 12 MHz or 6 MHz system clock using a single 12-MHz external crystal
Applications
The TLV320AIC23B is ideally suited for portable digital audio-player and recorder applications, including:
- MP3 digital audio players
- Portable solid-state audio recorders
- Devices requiring high-fidelity audio recording and playback in compact, power-saving designs
- Integrated FM tuners and other audio systems requiring analog bypass paths
Q & A
- What is the signal-to-noise ratio (SNR) of the TLV320AIC23B?
The SNR is up to 90 dB for the ADC and up to 100 dB for the DAC (A-weighted at 48 kHz)
- What are the supported sampling frequencies for the TLV320AIC23B?
The supported sampling frequencies range from 8 kHz to 96 kHz
- What are the data transfer word lengths supported by the TLV320AIC23B?
The supported word lengths are 16, 20, 24, and 32 bits
- What is the power consumption of the TLV320AIC23B during playback?
The power consumption is less than 23 mW during playback
- What types of packages are available for the TLV320AIC23B?
The component is available in 32-Pin MicroStar Junior and 28-Pin TSSOP packages
- Does the TLV320AIC23B support industry-standard oversampling rates?
Yes, it supports industry-standard oversampling rates of 256 fs and 384 fs, as well as unique rates of 250 fs and 272 fs
- What is the output power of the headphone amplifier in the TLV320AIC23B?
The headphone amplifier can deliver 30 mW per channel into 32 Ω
- How does the TLV320AIC23B manage power consumption?
The component features flexible power management with selective shutdown of codec functions to extend battery life
- What is the purpose of the internal oscillator in the TLV320AIC23B?
The internal oscillator provides a system clock to the DSP and other peripherals at either 12 MHz or 6 MHz using a single 12-MHz external crystal
- What types of interfaces does the TLV320AIC23B support?
The component supports glueless interface to TI McBSPs, I²S, MSB, or LSB justified-data transfers, and 2-wire and SPI-compatible serial-port protocols
