Overview
The PCM3168A device, produced by Texas Instruments, is a high-performance, single-chip, 24-bit audio coder and decoder (codecs) designed for advanced audio applications. It features single-ended and differential-selectable analog inputs and differential outputs. The device includes a six-channel, 24-bit analog-to-digital converter (ADC) and an eight-channel, 24-bit digital-to-analog converter (DAC), both employing delta-sigma (ΔΣ) modulators. It supports various audio interfaces, including I2S, left-justified, right-justified, DSP formats, and time-division-multiplexed (TDM) format. The PCM3168A can be controlled via a four-wire SPI-compatible interface or a two-wire I2C-compatible serial interface, and it is available in a 12-mm × 12-mm (10-mm × 10-mm body) HTQFP-64 PowerPAD™ package.
Key Specifications
| Specification | Details |
|---|---|
| ADC Channels | 6 channels |
| ADC Resolution | 24-bit |
| ADC Sampling Rate | 8 kHz to 96 kHz |
| ADC THD+N | –93 dB (Differential and Single-Ended) |
| ADC SNR | 107 dB (Differential), 104 dB (Single-Ended) |
| ADC Dynamic Range | 107 dB (Differential), 104 dB (Single-Ended) |
| ADC Input Voltage | 2 V RMS (Differential), 1 V RMS (Single-Ended) |
| DAC Channels | 8 channels |
| DAC Resolution | 24-bit |
| DAC Sampling Rate | 8 kHz to 192 kHz |
| DAC THD+N | –94 dB |
| DAC SNR | 112 dB |
| DAC Dynamic Range | 112 dB |
| System Clock | 256 fS, 384 fS, 512 fS, 768 fS (ADC); 128 fS (DAC) |
| Package | HTQFP-64 PowerPAD™ |
| Supply Voltage | 3 V to 5.5 V |
Key Features
- 24-bit ΔΣ ADC and DAC
- High-performance differential and single-ended inputs and outputs
- Support for I2S, left-justified, right-justified, DSP formats, and TDM format
- On-chip highpass filter and decimation filter
- Overflow flag and digital attenuation
- Soft mute and de-emphasis capabilities
- Control via SPI-compatible or I2C-compatible serial interface
- Hardware control mode with user-programmable functions
Applications
The PCM3168A is suitable for various high-performance audio applications, including professional audio equipment, home theaters, automotive audio systems, and consumer electronics requiring advanced audio processing. Its flexibility in supporting multiple audio formats and interfaces makes it a versatile choice for a wide range of audio systems.
Q & A
- What is the resolution of the ADC and DAC in the PCM3168A?
The ADC and DAC in the PCM3168A are both 24-bit resolution. - What are the sampling rates supported by the ADC and DAC?
The ADC supports sampling rates from 8 kHz to 96 kHz, while the DAC supports sampling rates from 8 kHz to 192 kHz. - What types of audio interfaces does the PCM3168A support?
The PCM3168A supports I2S, left-justified, right-justified, DSP formats, and time-division-multiplexed (TDM) format. - How can the PCM3168A be controlled?
The PCM3168A can be controlled via a four-wire SPI-compatible interface or a two-wire I2C-compatible serial interface, as well as through hardware control mode. - What is the package type of the PCM3168A?
The PCM3168A is available in a 12-mm × 12-mm (10-mm × 10-mm body) HTQFP-64 PowerPAD™ package. - What are the supply voltage ranges for the PCM3168A?
The supply voltage range for the PCM3168A is from 3 V to 5.5 V. - What are the key performance metrics of the ADC and DAC?
The ADC has a THD+N of –93 dB and SNR of 107 dB (differential) and 104 dB (single-ended). The DAC has a THD+N of –94 dB and SNR of 112 dB. - Does the PCM3168A have on-chip filters?
Yes, the PCM3168A includes an on-chip highpass filter and decimation filter. - Can the PCM3168A handle overflow conditions?
Yes, the PCM3168A has an overflow flag to handle overflow conditions. - What are some common applications for the PCM3168A?
The PCM3168A is commonly used in professional audio equipment, home theaters, automotive audio systems, and consumer electronics requiring advanced audio processing.
