Overview
The TLV320AIC23B-Q1 is a high-performance stereo audio codec designed by Texas Instruments. It is qualified for automotive applications and features highly integrated analog functionality, making it an ideal choice for portable digital audio-player and recorder applications. The codec supports audio sample rates from 8 kHz to 96 kHz and is optimized for use with Texas Instruments' digital signal processors (DSPs) and universal serial bus (USB) interfaces.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Sample Rates | 8 kHz to 96 kHz | - |
| Word Lengths | 16, 20, 24, 32 bits | - |
| ADC SNR (A-weighted, 0-dB gain) | Up to 90 dB | dB |
| DAC SNR (A-weighted) | Up to 100 dB | dB |
| Headphone Amplifier Power | 30 mW per channel into 32 Ω | mW |
| Power Consumption (Playback) | < 23 mW | mW |
| Standby Power Consumption | < 150 µW | µW |
| Package Type | 28-Pin TSSOP | - |
| Analog Supply Voltage | 3.3 V nominal | V |
| Buffer Supply Voltage | 2.7 V to 3.6 V | V |
Key Features
- Qualified for automotive applications
- Integrated total electret-microphone biasing and buffering solution
- High-performance stereo codec with multibit sigma-delta ADC and DAC
- Integrated headphone amplifier with analog volume control and mute
- Programmable audio interface supporting I2S, MSB, and LSB justified data transfers
- Flexible power management with selective shutdown of codec functions
- Support for unique oversampling rates (250 fs and 272 fs) optimized for TI DSPs and USB interfaces
- Internal oscillator with selectable clock divider for system clock generation
- Glueless interface to TI McBSPs and USB data interfaces
Applications
The TLV320AIC23B-Q1 is ideally suited for various audio applications, including:
- Portable digital audio players and recorders (e.g., MP3 players)
- Automotive audio systems
- Solid-state audio recorders
- Integrated FM tuners and other audio systems requiring high-fidelity audio
Q & A
- What are the supported sample rates for the TLV320AIC23B-Q1?
The TLV320AIC23B-Q1 supports sample rates from 8 kHz to 96 kHz.
- What is the maximum signal-to-noise ratio (SNR) of the ADC?
The ADC has a maximum SNR of up to 90 dB (A-weighted, 0-dB gain).
- How much power does the headphone amplifier deliver?
The headphone amplifier can deliver up to 30 mW per channel into 32 Ω.
- What is the power consumption during playback mode?
The power consumption during playback mode is less than 23 mW.
- What types of control interfaces are supported by the TLV320AIC23B-Q1?
The TLV320AIC23B-Q1 supports SPI (3-wire operation) and 2-wire control interfaces.
- What is the package type of the TLV320AIC23B-Q1?
The TLV320AIC23B-Q1 comes in a 28-Pin TSSOP package.
- What are the unique oversampling rates supported by the TLV320AIC23B-Q1?
The TLV320AIC23B-Q1 supports unique oversampling rates of 250 fs and 272 fs, optimized for TI DSPs and USB interfaces.
- How does the internal oscillator function in the TLV320AIC23B-Q1?
The internal oscillator can generate a system clock from a 12-MHz external crystal, providing frequencies of 12 MHz or 6 MHz using an internal clock buffer and selectable divider.
- What is the standby power consumption of the TLV320AIC23B-Q1?
The standby power consumption is less than 150 µW.
- Is the TLV320AIC23B-Q1 suitable for automotive applications?
Yes, the TLV320AIC23B-Q1 is qualified for automotive applications.
