FEATURES

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- and 24-Bit Audio Data

PCM Data Formats: Standard, I2S, and

Left-Justified

Optional Interface Available to External

Digital Filter or DSP

Digital De-Emphasis

Digital Filter Rolloff: Sharp or Slow

Soft Mute

Zero Flag

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 Players

Musical Instruments

HDTV Receivers

Car Audio Systems

Digital Multitrack Recorders

Other Applications Requiring 24-Bit Audio

DESCRIPTION

The PCM1794 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 PCM1794 provides balanced

current outputs, allowing the user to optimize analog

performance externally. Sampling rates up to 200 kHz are

supported.