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PCM1794A-Q1

ACTIVE

132-dB, 24-bit, 192-kHz advanced Segment, Audio Stereo Digital-to-Analog Converter

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Data sheet

PCM1794A-Q1

ACTIVE
Data sheet Order now

Product details

Number of DAC channels 2 Sampling rate (min) (kHz) 10 Sampling rate (max) (kHz) 192 THD+N (dB) -88 Control interface H/W Resolution (Bits) 24 DAC SNR (typ) (dB) 127 Analog outputs 2 Architecture Advanced Segment Operating temperature range (°C) -40 to 125 Rating Automotive
Number of DAC channels 2 Sampling rate (min) (kHz) 10 Sampling rate (max) (kHz) 192 THD+N (dB) -88 Control interface H/W Resolution (Bits) 24 DAC SNR (typ) (dB) 127 Analog outputs 2 Architecture Advanced Segment Operating temperature range (°C) -40 to 125 Rating Automotive
SSOP (DB) 28 79.56 mm² (10.2 mm × 7.8 mm)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM Classification Level 2
    • Device CDM Classification Level C6
  • 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

All trademarks are the property of their respective owners.

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM Classification Level 2
    • Device CDM Classification Level C6
  • 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

All trademarks are the property of their respective owners.

The PCM1794A-Q1 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-Q1 device provides balanced current outputs, allowing the user to optimize analog performance externally. Sampling rates up to 200 kHz are supported.

For all available packages, see the orderable addendum at the end of the data sheet.

The PCM1794A-Q1 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-Q1 device provides balanced current outputs, allowing the user to optimize analog performance externally. Sampling rates up to 200 kHz are supported.

For all available packages, see the orderable addendum at the end of the data sheet.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet PCM1794A-Q1 24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo Digital-to-Analog Converter datasheet (Rev. A) PDF | HTML Dec 7, 2015
Circuit design Current-to-voltage converter circuit for audio DACs (Rev. A) PDF | HTML Sep 19, 2024
Application note Out-of-Band Noise and Filtering for PCM DAC May 20, 2005
Application note A Low Noise, Low Distortion Design for Antialiasing and Anti-Imaging Filters Sep 27, 2000
Application note THD+N Versus Frequency Characteristics and Spectra of the PCM1717/18/19/20/23/27 Sep 27, 2000

Design & development

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Simulation model

PCM1794A-Q1 IBIS MODEL

SLAM284.ZIP (11 KB) - IBIS model
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SSOP (DB) 28 Ultra Librarian
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