PCM1738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PCM1738ADC/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?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

· 24-Bit Resolution

· Analog Performance (VCC = 5 V):

– Dynamic Range: 117 dB (typical)

– SNR: 117 dB (typical)

– THD+N: 0.0004% (typical)

– Full-Scale Output: 2.2 Vrms (at

Postamplifier)

· Differential Current Output: ±2.48 mA

· 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

· Data Formats: Standard, I2S, and Left-Justified

· 8′ Oversampling Digital Filter:

– Stop-Band Attenuation: –82 dB

– Pass-Band Ripple: ±0.002 dB

· Optional Interface to External Digital Filter

Available

· Optional Interface to DSD Decoder for SACD

Playback

· 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-Detect Mute

– Zero Flags for Each Output

· Dual-Supply Operation:

– 5-V Analog, 3.3-V Digital

· 5-V Tolerant Digital Inputs

· Small SSOP-28 Package

APPLICATIONS

· AV Receivers

· DVD Movie Players

· SACD Players

· HDTV Receivers

· Car Audio Systems

· Digital Multitrack Recorders

· Other Multichannel Audio Systems

DESCRIPTION

The PCM1738 is a CMOS, monolithic, integrated

circuit (IC) that includes stereo digital-to-analog

converters (DACs) and support circuitry in a small

SSOP-28 package. The data converters use a newly

developed advanced segment DAC architecture to

achieve excellent dynamic performance and

improved tolerance to clock jitter. The PCM1738

provides balanced current outputs, allowing the user

to optimize analog performance externally, and

accepts industry-standard audio data formats with

16- to 24-bit data, providing easy interfacing to audio

DSP and decoder chips. Sampling rates up to 200

kHz are supported. The PCM1738 also has two

optional modes of operation: an external digital filter

mode (for use with the DF1704, DF1706, and

PMD200), and a DSD decoder interface for SACD

playback applications. A full set of

user-programmable functions is accessible through a

4-wire serial control port that supports register write

and read functions.