DSD1794ADB集成电路（IC）的ADC/DAC-特殊用途规格书PDF中文资料

DSD1794ADB属于集成电路（IC）的ADC/DAC-特殊用途。由德州仪器制造生产的DSD1794ADBADC/DAC - 特殊用途该产品族中的产品可用于模拟和数字表示的信息转换，适用于特定用例，或集成了通用数据转换器中不常见的其他功能。例如针对超声或汽车雷达应用集成了低噪声放大器和可变增益级的器件、注重音频和视频的产品、在段码式显示器上集成显示测量值功能的器件、集成输入输出电气隔离的器件等。

FEATURES

Supports Both DSD and PCM Formats

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

Optional Interface to External Digital Filter or

DSP Available

I2C-Compatible Serial Port

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

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

DESCRIPTION

The DSD1794A 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 DSD1794A

provides balanced current outputs, allowing the user to

optimize analog performance externally. The DSD1794A

accepts the PCM and DSD audio data formats, providing

easy interfacing to audio DSP and decoder chips. The

DSD1794A 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 I2C-compatible serial

port.