PCM1791A - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

PCM1791A
Manufacturer

TI
ChipWorker Part#

CW355811916
RoHS

Lead free / RoHS Compliant
Description

24Bit 192kHz Sampling Advanced Segment Audio Stereo DAC5
Documentation

Datasheet

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PCM1791A Specifications

Attribute	Attribute Value

Part Number	PCM1791A
Manufacturer	TI
ChipWorker Part#	CW355811916
Documentation	Datasheet
	expand all
RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

The PCM1791A 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 TIs advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1791A provides balanced voltage outputs, allowing the user to optimize analog performance externally. The PCM1791A accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The PCM1791A also accepts interface to 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 PCM1791A also supports the time-division-multiplexed command and audio (TDMCA) data format.
24-Bit Resolution
Analog Performance:
Dynamic Range: 113 dB
THD+N: 0.001%
Full-Scale Output: 2.1 V RMS (at Postamp)
Differential Voltage Output: 3.2 Vp-p
8× Oversampling Digital Filter:
Stop-Band Attenuation: 82 dB
Pass-Band Ripple: ±0.002 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
Optional Interface to External Digital Filter or DSP Available
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/PCM Format
Zero Detect Mute/PCM Format
Zero Flag for Each Output/PCM and DSD Formats
Dual Supply Operation:
5-V Analog, 3.3-V Digital
5-V Tolerant Digital Inputs
Small 28-Lead SSOP Package
APPLICATIONS
A/V Receivers
DVD Movie Players
SACD Player
HDTV Receivers
Car Audio Systems
Digital Multitrack Recorders
Other Applications Requiring 24-Bit Audio

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