Overview
The PCM1789PWR is a high-performance, single-chip, 24-bit, stereo audio digital-to-analog converter (DAC) manufactured by Texas Instruments. This device features differential outputs and employs an enhanced multi-level delta-sigma (ΔΣ) modulator. It supports a wide range of sampling rates from 8 kHz to 192 kHz and various digital audio input word lengths including 16-, 20-, 24-, and 32-bit formats. The PCM1789PWR is available in a 24-pin TSSOP package and operates over a temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24-bit |
| Sampling Rate | 8 kHz to 192 kHz |
| Digital Audio Input Word Length | 16-, 20-, 24-, 32-bit |
| Audio Interface Formats | I²S, Left-Justified, Right-Justified, DSP |
| Differential Voltage Output | 8 VPP |
| THD+N | 94 dB |
| SNR | 113 dB |
| Dynamic Range | 113 dB |
| System Clock | 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, 768 fS, 1152 fS |
| Package Type | TSSOP-24 |
| Operating Temperature Range | -40°C to 85°C |
| Power Supplies | 5 V (Analog), 3.3 V (Digital) |
Key Features
- Enhanced multi-level delta-sigma (ΔΣ) modulator for high performance.
- Differential voltage output with 8 VPP.
- Analog low-pass filter included.
- 4x/8x oversampling digital filter with ±0.0018 dB passband ripple and 75 dB stop band attenuation.
- Flexible audio interface supporting I²S, Left-Justified, Right-Justified, and DSP formats.
- Digital attenuation, soft mute, and de-emphasis (32 kHz, 44.1 kHz, 48 kHz).
- Data polarity control and power-save mode.
- Three-wire SPI-compatible or two-wire I²C-compatible serial control interface, or hardware control.
- External reset pin and analog mute by clock halt detection.
Applications
The PCM1789PWR is suitable for various high-performance audio applications, including professional audio equipment, home audio systems, car audio systems, and other consumer electronics requiring high-quality audio conversion. Its flexibility in interface formats and control options make it versatile for different system designs.
Q & A
- What is the resolution of the PCM1789PWR DAC?
The PCM1789PWR has a 24-bit resolution. - What are the supported sampling rates for the PCM1789PWR?
The supported sampling rates range from 8 kHz to 192 kHz. - What are the available digital audio input word lengths for the PCM1789PWR?
The available digital audio input word lengths are 16-, 20-, 24-, and 32-bit. - What audio interface formats does the PCM1789PWR support?
The PCM1789PWR supports I²S, Left-Justified, Right-Justified, and DSP formats. - What is the differential voltage output of the PCM1789PWR?
The differential voltage output is 8 VPP. - How is the PCM1789PWR controlled?
The PCM1789PWR can be controlled through a three-wire SPI-compatible or two-wire I²C-compatible serial interface, or through hardware control. - What power supplies are required for the PCM1789PWR?
The PCM1789PWR requires 5 V for the analog section and 3.3 V for the digital section. - What is the operating temperature range of the PCM1789PWR?
The operating temperature range is -40°C to 85°C. - What package type is the PCM1789PWR available in?
The PCM1789PWR is available in a 24-pin TSSOP package. - Does the PCM1789PWR have power-saving features?
Yes, the PCM1789PWR has a power-save mode.
