Texas Instruments PCM1794A
The PCM1794A device is a monolithic, CMOSintegrated circuit that includes stereo digital-to-analog converters (DACs) and support circuitry in a small 28pin SSOP package. The data converters use TI’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1794A device provides balanced current outputs, allowing the user to optimize analog performance externally.FEATURES
●1 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-Bit and 24-Bit Audio Data
● PCM Data Formats: Standard, I2S, and LeftJustified
● 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-Pin SSOP Package 2
APPLICATIONS
● A/V Receivers● DVD Players
● Musical Instruments
● Car Audio Systems
● Other
APPLICATIONS
Requiring 24-Bit Audio 3DESCRIPTION
Sampling rates up to 200 kHz are supported. PART NUMBER PCM1794A Device Information(1) PACKAGE BODY SIZE (NOM) SSOP (28) 10.20 mm × 5.30 mm (1) For all available packages, see the orderable addendum at the end of the data sheet.