Overview
The PCM1795DBR is a high-performance, 32-bit, stereo digital-to-analog converter (DAC) produced by Texas Instruments. This monolithic CMOS integrated circuit is designed to deliver excellent dynamic performance and improved tolerance to clock jitter. The device is packaged in a small SSOP-28 package, making it suitable for a variety of audio applications. It supports both pulse code modulation (PCM) and direct stream digital (DSD) audio data formats, facilitating easy integration with audio digital signal processors (DSPs) and decoder chips.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 32 bits |
| Sampling Rate | Up to 200 kHz |
| Analog Outputs | 2 |
| Dynamic Range | 123 dB |
| THD+N | 0.0005% |
| Differential Current Output | 3.9 mA |
| Operating Temperature Range | -25 to 85 °C |
| Package Type | SSOP-28 |
| Supply Voltage | 5-V Analog, 3.3-V Digital |
| Control Interface | SPI, I2C, TDMCA |
Key Features
- Advanced segment DAC architecture for excellent dynamic performance and improved tolerance to clock jitter.
- Supports PCM and DSD audio data formats.
- 8× oversampling digital filter with 98 dB stop-band attenuation and ±0.0002 dB passband ripple.
- Digital attenuation: 0 dB to 120 dB, 0.5-dB/step.
- Digital de-emphasis and filter roll-off options (sharp or slow).
- Soft mute and zero flag for each output.
- Compatible with PCM1792A and PCM1796 (pins and mode controls).
- Dual supply operation: 5-V analog, 3.3-V digital with 5-V tolerant digital inputs.
Applications
The PCM1795DBR is suitable for a wide range of high-quality audio applications, including:
- Audiophile-grade audio equipment.
- Professional audio systems.
- High-end consumer audio products.
- Digital audio workstations and recording equipment.
- Home theater systems and soundbars.
Q & A
- What is the resolution of the PCM1795DBR?
The PCM1795DBR has a resolution of 32 bits.
- What is the maximum sampling rate supported by the PCM1795DBR?
The maximum sampling rate supported is up to 200 kHz.
- What types of audio data formats does the PCM1795DBR support?
The device supports both pulse code modulation (PCM) and direct stream digital (DSD) audio data formats.
- What is the dynamic range of the PCM1795DBR?
The dynamic range is 123 dB.
- What control interfaces are available on the PCM1795DBR?
The device supports SPI, I2C, and TDMCA control interfaces.
- What is the operating temperature range of the PCM1795DBR?
The operating temperature range is -25 to 85 °C.
- Does the PCM1795DBR support external digital filters?
- What is the package type of the PCM1795DBR?
The device is packaged in a SSOP-28 package.
- Is the PCM1795DBR RoHS compliant?
- What are the supply voltage requirements for the PCM1795DBR?
The device requires 5-V analog and 3.3-V digital supply voltages, with 5-V tolerant digital inputs.
