Overview
The TLV320AIC23BIRHDG4, produced by Texas Instruments, is a high-performance stereo audio codec designed for highly integrated analog functionality. This component is ideal for portable digital audio-player and recorder applications, such as MP3 digital audio players. It utilizes multibit sigma-delta technology with integrated oversampling digital interpolation filters, supporting data-transfer word lengths of 16, 20, 24, and 32 bits, and sample rates from 8 kHz to 96 kHz. The codec features low power consumption and flexible power management, making it suitable for battery-powered devices by allowing selective shutdown of codec functions to extend battery life.
Key Specifications
| Parameter | Description |
|---|---|
| ADC SNR | Up to 90-dBA (A-weighted at 48 kHz) |
| DAC SNR | Up to 100-dBA (A-weighted at 48 kHz) |
| Sample Rates | 8 kHz to 96 kHz |
| 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 |
| Package Type | 28-Pin TSSOP (62 mm²) and MicroStar Junior (25 mm²) |
| Operating Temperature Range | -10°C to 70°C |
| Headphone Amplifier Output | 30 mW per channel into 32 Ω |
Key Features
- High-performance stereo codec with multibit sigma-delta ADC and DAC.
- Integrated analog features including stereo-line inputs, analog bypass path, stereo headphone amplifier with analog volume control and mute, and complete electret-microphone-capsule biasing and buffering solution.
- Adjustable and programmable gain microphone amplifier (gain adjustable from 1 to 5 and 0 dB or 20 dB).
- Support for industry-standard oversampling rates of 256 fs and 384 fs, and unique oversampling rates of 250 fs and 272 fs for optimized interface with TI C54x DSPs and USB data interfaces.
- Internal oscillator with a 12-MHz external crystal providing system clock to DSP and other peripherals at 12 MHz or 6 MHz.
- Software control via TI McBSP-compatible multiprotocol serial port with 2-wire and SPI-compatible serial-port protocols.
- Glueless interface to TI McBSPs and I2S-compatible interface requiring only one McBSP for both ADC and DAC.
- Low power consumption and flexible power management for extended battery life in portable applications.
Applications
The TLV320AIC23BIRHDG4 is ideally suited for portable solid-state audio players and recorders, such as MP3 digital audio players. Its compact design and low power consumption make it a preferred choice for battery-powered audio devices. Additionally, it can be used in applications requiring high-fidelity audio recording and playback, including integrated FM tuners and other portable audio equipment.
Q & A
- What is the TLV320AIC23BIRHDG4?
The TLV320AIC23BIRHDG4 is a high-performance stereo audio codec produced by Texas Instruments, designed for highly integrated analog functionality in portable audio applications.
- What are the supported sample rates and word lengths?
The TLV320AIC23BIRHDG4 supports sample rates from 8 kHz to 96 kHz and word lengths of 16, 20, 24, and 32 bits.
- What is the signal-to-noise ratio (SNR) of the ADC and DAC?
The ADC has a SNR of up to 90-dBA (A-weighted at 48 kHz), and the DAC has a SNR of up to 100-dBA (A-weighted at 48 kHz).
- What are the power supply requirements?
The core digital supply ranges from 1.42 V to 3.6 V, and the buffer and analog supply ranges from 2.7 V to 3.6 V.
- What is the output power of the headphone amplifier?
The headphone amplifier can deliver up to 30 mW per channel into 32 Ω.
- Does the TLV320AIC23BIRHDG4 support multiple serial port protocols?
Yes, it supports 2-wire and SPI-compatible serial-port protocols.
- How does the internal oscillator function?
The internal oscillator, when connected to a 12-MHz external crystal, provides a system clock to the DSP and other peripherals at either 12 MHz or 6 MHz.
- What are the unique oversampling rates supported by the TLV320AIC23BIRHDG4?
It supports unique oversampling rates of 250 fs and 272 fs, in addition to industry-standard rates of 256 fs and 384 fs.
- What is the purpose of the analog bypass path?
The analog bypass path allows the use of the stereo-line inputs and the headphone amplifier with analog volume control, while completely bypassing the codec, enabling further design flexibility.
- How does the power management feature extend battery life?
The low power consumption and flexible power management allow selective shutdown of codec functions, thus extending battery life in portable applications.
