Product details


Number of ADC channels 2 Analog inputs 2 Digital audio interface DSP, I2S, L, R Control interface H/W Sampling rate (Max) (kHz) 192 ADC SNR (Typ) (dB) 112 Rating Catalog open-in-new Find other Audio ADCs

Package | Pins | Size

SSOP (DB) 28 54 mm² 5.30 x 10.20 open-in-new Find other Audio ADCs


  • 24-Bit Delta-Sigma Stereo A/D Converter
  • High Performance:
    • Dynamic Range: 112 dB (Typical)
    • SNR: 111 dB (Typical)
    • THD+N: -102 dB (Typical)
  • High-Performance Linear Phase Antialias Digital Filter:
    • Pass-Band Ripple: ±0.005 dB
    • Stop-Band Attenuation: -100 dB
  • Fully Differential Analog Input: ±2.5 V
  • Audio Interface: Master- or Slave-Mode Selectable
  • Data Formats: Left-Justified, I2S, Standard 24-Bit, and DSD
  • Function:
    • Peak Detection
    • High-Pass Filter (HPF): -3 dB at 1 Hz, fS = 48 kHz
  • Sampling Rate up to 192 kHz
  • System Clock: 128 fS, 256 fS, 384 fS,
    512 fS, or 768 fS
  • Dual Power Supplies:
    • 5 V for Analog
    • 3.3 V for Digital
  • Power Dissipation: 225 mW
  • Small 28-Pin SSOP
  • DSD Output: 1 Bit, 64 fS
    • AV Amplifier
    • MD Player
    • Digital VTR
    • Digital Mixer
    • Digital Recorder

System Two, Audio Precision are trademarks of Audio Precision, Inc.
All other trademarks are the property of their respective owners.

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The PCM1804 is a high-performance, single-chip stereo A/D converter with fully differential analog voltage input. The PCM1804 uses a precision delta-sigma modulator and includes a linear phase antialias digital filter and high-pass filter (HPF) that removes dc offset from the input signal. The PCM1804 is suitable for a wide variety of mid- to high-grade consumer and professional applications, where excellent performance and 5-V analog supply and 3.3-V digital power-supply operation are required. The PCM1804 can achieve both PCM audio and DSD format due to the precision delta-sigma modulator. The PCM1804 is fabricated using an advanced CMOS process and is available in a small 28-pin SSOP package.

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Technical documentation

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Type Title Date
* Data sheet Full Differential Analog Input 24-Bit, 192-kHz Stereo A/D Converter datasheet (Rev. C) Oct. 12, 2007
Application note Gain Scaling and Audio Performance of the PCM1804 May 09, 2002
Application note Dynamic Performance Testing of Digital Audio D/A Converters Oct. 02, 2000

Design & development

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Hardware development

document-generic User guide
As a motherboard for smart amp solutions, this EVM allows for a modular approach to TI's low power audio/haptics portfolio. Enabled with each product's respective daughter card, the designer can evaluate their application and assess a wider range of possible solutions. Can moderate between (...)
  • Compatible with learning board
  • USB Bidirectonal, for digital input support and an ADC for analog audio source
  • Differential filter for performance characterization
  • Supports up to 8 devices
  • Feeds back modified signal to Ambient Echo Cancellation firmware
  • Waveform control for haptic response

Design tools & simulation

SLEM012.ZIP (12 KB) - IBIS Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

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SSOP (DB) 28 View options

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