PCM1792A - 132dB SNR 最高性能立体声 DAC（软件控制）

PCM1792A是TI德州仪器公司的一款音频DAC产品，PCM1792A是132dB SNR 最高性能立体声 DAC（软件控制），本站介绍了PCM1792A的封装应用图解、特点和优点、功能等，并给出了与PCM1792A相关的TI元器件型号供参考。

PCM1792A - 132dB SNR 最高性能立体声 DAC（软件控制） - 音频DAC - 音频转换器 - 德州仪器

产品描述

The PCM1792A is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1792A provides balanced current outputs, allowing the user to optimize analog performance externally. The PCM1792A accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The PCM1792A also interfaces with external digital filter devices (DF1704, DF1706, PMD200). Sampling rates up to 200 kHz are supported. A full set of user-programmable functions is accessible through an SPI or I²C serial control port, which supports register write and readback functions. The PCM1792A also supports the time division multiplexed command and audio (TDMCA) data format.

产品特性

24-Bit Resolution
Analog Performance:
- Dynamic Range:
  - 132 dB (9 V rms, Mono)
  - 129 dB (4.5 V rms, Stereo)
  - 127 dB (2 V rms, Stereo)
- THD+N: 0.0004%
Differential Current Output: 7.8 mA p-p
8× Oversampling Digital Filter:
- Stop-Band Attenuation: –130 dB
- Pass-Band Ripple: ±0.00001 dB
Sampling Frequency: 10 kHz to 200 kHz
System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect
Accepts 16-, 20-, and 24-Bit Audio Data
PCM Data Formats: Standard, I²S, and Left-Justified
DSD Format Interface Available
Optional Interface to External Digital Filter or DSP Available
TDMCA or Serial Port (SPI/I²C)
User-Programmable Mode Controls:
- Digital Attenuation: 0 dB to –120 dB, 0.5 dB/Step
- Digital De-Emphasis
- Digital Filter Rolloff: Sharp or Slow
- Soft Mute
- Zero Flag for Each Output
Dual Supply Operation:
- 5-V Analog, 3.3-V Digital
5-V Tolerant Digital Inputs
Small 28-Lead SSOP Package
APPLICATIONS
- A/V Receivers
- SACD Player
- DVD Players
- HDTV Receivers
- Car Audio Systems
- Digital Multitrack Recorders
- Other Applications Requiring 24-Bit Audio

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