PCM1781DBQR集成电路（IC）的ADC/DAC-特殊用途规格书PDF中文资料

PCM1781DBQR属于集成电路（IC）的ADC/DAC-特殊用途。由美国德州仪器公司制造生产的PCM1781DBQRADC/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

· 24-Bit Resolution

· Analog Performance (VCC = 5 V):

– Dynamic Range: 106 dB

– SNR: 106 dB, Typical

– THD+N: 0.002%, Typical

– Full-Scale Output: 3.9 Vp-p, Typical

· 4×/8× Oversampling Digital Filter:

– Stop-Band Attenuation: –50 dB

– Pass-Band Ripple: ±0.04 dB

· Sampling Frequency: 5 kHz to 200 kHz

· System Clock: 128 fS, 192 fS, 256 fS, 384 fS,

512 f S, 768 fS, 1152 fS With Autodetect

· Software Control (PCM1780, PCM1782):

– Accepts 16-, 18-, 20-, and 24-Bit Audio Data

– Formats: Right-Justified, I2S, and

Left-Justified

– Digital Attenuation: Mode Selectable

· 0 dB to –63 dB, 0.5 dB/step

· 0 dB to –100 dB, 1 dB/step

– Digital De-Emphasis

– Digital Filter Rolloff: Sharp or Slow

– Soft Mute

– Zero Flags for Each Output

– Open-Drain Output Zero Flag (PCM1782)

· Hardware Control (PCM1781):

– I2S and 16-Bit Word, Right-Justified

– Digital De-Emphasis

– Soft Mute

– Zero Flag for L-, R-Channel Common

Output

· Power Supply: 5-V Single Supply

· Small, 16-Lead SSOP Package (150 mil)

· Pin-Compatible with PCM1680

APPLICATIONS

· A/V Receivers

· DVD Movie Players

· DVD Add-On Cards For High-End PCs

· DVD Audio Players

· HDTV Receivers

· Car Audio Systems

· Other Applications Requiring 24-Bit Audio

DESCRIPTION

The PCM1780/81/82 is a CMOS, monolithic,

integrated circuit, which includes stereo

digital-to-analog converters and support circuitry in a

small 16-lead SSOP package. The data converters

use TI’s enhanced multilevel delta-sigma architecture

to achieve excellent dynamic performance and

improved tolerance to clock jitter. The

PCM1780/81/82 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

PCM1780/82 provides a full set of

user-programmable functions through a three-wire

serial control port, which supports register write functions. The PCM1781 provides a subset of

user-programmable functions through four control

pins.

The PCM1780 is pin-compatible with the PCM1680

(8-channel DAC).