DSD1794ADB集成電路（IC）的ADC/DAC-特殊用途規(guī)格書(shū)PDF中文資料

DSD1794ADB屬于集成電路（IC）的ADC/DAC-特殊用途。由美國(guó)德州儀器公司制造生產(chǎn)的DSD1794ADBADC/DAC - 特殊用途該產(chǎn)品族中的產(chǎn)品可用于模擬和數(shù)字表示的信息轉(zhuǎn)換，適用于特定用例，或集成了通用數(shù)據(jù)轉(zhuǎn)換器中不常見(jiàn)的其他功能。例如針對(duì)超聲或汽車(chē)?yán)走_(dá)應(yīng)用集成了低噪聲放大器和可變?cè)鲆婕?jí)的器件、注重音頻和視頻的產(chǎn)品、在段碼式顯示器上集成顯示測(cè)量值功能的器件、集成輸入輸出電氣隔離的器件等。

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.