PCM1794A 132dB SNR Highest Performance Stereo DAC (H/W Control) | TI.com

PCM1794A (ACTIVE) 132dB SNR Highest Performance Stereo DAC (H/W Control)

132dB SNR Highest Performance Stereo DAC (H/W Control) - PCM1794A
Datasheet
PCM1794A 24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo Digital-to-Analog Converter datasheet (Rev. B)
 

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Description

The PCM1794A device is a monolithic, CMOS-integrated circuit that includes stereo digital-to-analog converters (DACs) and support circuitry in a small 28-pin 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. Sampling rates up to 200 kHz are supported.

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-Bit 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-Pin SSOP Package

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Parametrics

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Part number Order DAC channels Analog inputs Analog outputs DAC SNR (Typ) (dB) Sampling rate (Max) (kHz) Control interface Resolution (Bits) Architecture Package size: mm2:W x L (PKG) Approx. price (US$)
PCM1794A Order now 2     0     2     127     192     H/W     24     Advanced Segment     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     7.08 | 1ku    
PCM1792A Order now 2     0     2     127     192     SPI
I2C    		 24     Advanced Segment     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     7.64 | 1ku    
PCM1795 Order now 2     0     2     123     200     SPI
I2C
TDMCA    		 32     Advanced Segment     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     2.90 | 1ku    
PCM1798 Order now 2     0     2     123     192     H/W     24     Advanced Segment     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     2.78 | 1ku