Overview
The PCM3168A device, produced by Texas Instruments, is a high-performance, single-chip, 24-bit audio coder and decoder (codec) designed for multi-channel audio applications. It features six analog-to-digital converter (ADC) channels and eight digital-to-analog converter (DAC) channels, supporting both single-ended and differential-selectable analog inputs and differential outputs. The device is capable of sampling rates from 8 kHz to 96 kHz for the ADC and up to 192 kHz for the DAC, making it suitable for a wide range of audio systems.
Key Specifications
| Parameter | Specification |
|---|---|
| ADC Channels | 6 channels, 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, 24-bit |
| DAC Sampling Rate | 8 kHz to 192 kHz |
| DAC THD+N | –94 dB |
| DAC SNR | 112 dB |
| DAC Dynamic Range | 112 dB |
| DAC Output Voltage | 8 V PP (Differential) |
| Package | HTQFP-64 (10-mm x 10-mm body) |
| Operating Temperature Range | –40°C to 85°C (Consumer Grade), –40°C to 105°C (Automotive Audio Grade) |
Key Features
- 24-bit ΔΣ ADC and DAC
- High-performance ADC and DAC with low THD+N and high SNR
- Support for single-ended and differential analog inputs and differential outputs
- Flexible sampling rates: 8 kHz to 96 kHz for ADC, 8 kHz to 192 kHz for DAC
- On-chip decimation filter and highpass filter
- Analog lowpass filter included for DAC
- 4x/8x oversampling digital filter for DAC
- Flexible mode control through four-wire SPI or two-wire I2C serial interface, or hardware control
- Support for I2S, left-justified, right-justified, DSP, and TDM audio formats
- Digital attenuation, soft mute, and de-emphasis functions
- External reset pin and independent master/slave audio interface modes
Applications
- Car Audio External Amplifiers
- Car Audio AVN Applications
- Home Theaters
- AV Receivers
Q & A
- What is the sampling rate range for the ADC in the PCM3168A?
The ADC supports sampling rates from 8 kHz to 96 kHz.
- What is the maximum sampling rate for the DAC in the PCM3168A?
The DAC supports sampling rates up to 192 kHz.
- What types of analog inputs does the PCM3168A support?
The PCM3168A supports both single-ended and differential-selectable analog inputs.
- What is the SNR of the DAC in the PCM3168A?
The SNR of the DAC is 112 dB.
- How can the PCM3168A be controlled?
The PCM3168A can be controlled through a four-wire SPI-compatible interface, a two-wire I2C-compatible serial interface, or hardware control mode.
- What audio formats does the PCM3168A support?
The PCM3168A supports I2S, left-justified, right-justified, DSP, and TDM audio formats.
- What is the operating temperature range for the PCM3168A?
The operating temperature range is –40°C to 85°C for Consumer Grade and –40°C to 105°C for Automotive Audio Grade.
- What package type is the PCM3168A available in?
The PCM3168A is available in a HTQFP-64 package with a 10-mm x 10-mm body.
- Does the PCM3168A include any on-chip filters?
Yes, the PCM3168A includes an on-chip decimation filter, highpass filter, and analog lowpass filter for the DAC.
- What are the power supply requirements for the PCM3168A?
The PCM3168A requires 5 V for analog and 3.3 V for digital power supplies.
