Overview
The PCM5122PWR, produced by Texas Instruments, is a member of the PCM512x family of monolithic CMOS-integrated circuits. These devices integrate a stereo digital-to-analog converter (DAC) along with additional support circuitry, all packaged in a compact 28-pin TSSOP package. The PCM5122PWR utilizes the latest generation of TI’s advanced segment-DAC architecture, which ensures excellent dynamic performance and improved tolerance to clock jitter. This component is designed to provide high-quality audio output and supports various audio processing functions, making it suitable for a wide range of audio applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 28-Pin TSSOP (PW) |
| Operating Temperature Range | -25°C to 85°C |
| Resolution | 16-bit, 24-bit, 32-bit |
| Sampling Rate | Up to 384 kHz |
| Data Interface | PCM, I2S, Left-Justified, Right-Justified, TDM / DSP |
| Voltage Supply | 3.3-V Analog, 1.8-V or 3.3-V Digital |
| Output Voltage | 2.1 VRMS (GND centered) |
| Dynamic Range | 112 dB |
| THD+N at -1 dBFS | -93 dB |
| Load Resistance | Down to 1 kΩ |
Key Features
- Register-Selectable Audio-Processing Functions up to 48-kHz: Dynamic Range Control (DRC), Equalization (EQ), Filtering
- DAC Functionality to 384-kHz
- Market-Leading Low Out-of-Band Noise
- Selectable Digital-Filter Latency and Performance
- No DC-Blocking Capacitors Required
- Integrated Negative Charge Pump
- Intelligent Muting System: Soft Up or Down Ramp and Analog Mute for 120-dB Mute SNR
- Integrated High-Performance Audio PLL With BCK Reference to Generate SCK Internally
- Accepts 16-, 20-, 24-, and 32-Bit Audio Data
- SPI or I2C Control
- Software or Hardware Configuration
- Automatic Power-Save Mode When LRCK and BCK are Deactivated
- 1.8-V or 3.3-V Failsafe LVCMOS Digital Inputs
- Integrated Power-On Reset
Applications
- A/V Receivers
- DVD, BD Players
- HDTV Receivers
- Applications Requiring 2-VRMS Audio Output
Q & A
- What is the package type of the PCM5122PWR?
The PCM5122PWR comes in a 28-pin TSSOP package. - What are the supported audio data formats?
The PCM5122PWR supports I2S, Left-Justified, Right-Justified, and TDM / DSP formats. - What is the maximum sampling rate of the PCM5122PWR?
The maximum sampling rate is up to 384 kHz. - Does the PCM5122PWR require DC-blocking capacitors?
No, the PCM5122PWR does not require DC-blocking capacitors due to its ground-centered output. - What is the dynamic range of the PCM5122PWR?
The dynamic range is 112 dB. - Can the PCM5122PWR drive low impedance loads?
Yes, it can drive loads down to 1 kΩ. - What control interfaces are available for the PCM5122PWR?
The component supports SPI or I2C control. - Does the PCM5122PWR have an integrated PLL?
Yes, it has an integrated high-performance audio PLL. - What is the power supply requirement for the PCM5122PWR?
The component operates on a single supply: 3.3-V Analog and 1.8-V or 3.3-V Digital. - Is there an automatic power-save mode?
Yes, the PCM5122PWR enters an automatic power-save mode when LRCK and BCK are deactivated.
