PCM1796 - 123dB SNR 立体声 DAC（软件控制）

PCM1796是TI德州仪器公司的一款音频DAC产品，PCM1796是123dB SNR 立体声 DAC（软件控制），本站介绍了PCM1796的封装应用图解、特点和优点、功能等，并给出了与PCM1796相关的TI元器件型号供参考。

PCM1796 - 123dB SNR 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 PCM1796 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 PCM1796 provides balanced current outputs, allowing the user to optimize analog performance externally. The PCM1796 accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The PCM1796 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 PCM1796 also supports the time division multiplexed command and audio (TDMCA) data format.

产品特性

24-Bit Resolution
Analog Performance:
- Dynamic Range: 123 dB
- THD+N: 0.0005%
Differential Current Output: 4 mA p-p
8× Oversampling Digital Filter:
- Stop-Band Attenuation: –98 dB
- Pass-Band Ripple: ±0.0002 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
Interface Available for Optional External Digital Filter or DSP
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
Compatible With PCM1792 (Pins and Mode Controls)
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 Players
- DVD Players
- HDTV Receivers
- Car Audio Systems
- Digital Multitrack Recorders
- Other Applications Requiring 24-Bit Audio

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