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Product details

Parameters

Number of DAC channels (#) 2 Analog inputs 0 Analog outputs 2 DAC SNR (Typ) (dB) 113 Sampling rate (Max) (kHz) 192 Control interface SPI, I2C, H/W Resolution (Bits) 24 Architecture Current Segment DAC open-in-new Find other Audio DACs

Package | Pins | Size

TSSOP (PW) 24 34 mm² 4.4 x 7.8 open-in-new Find other Audio DACs

Features

  • Enhanced Multi-Level Delta-Sigma DAC:
    • High Performance: Differential, fS = 48 kHz
    • THD+N: –94 dB
    • SNR: 113 dB
    • Dynamic Range: 113 dB
    • Sampling Rate: 8 kHz to 192 kHz
    • System Clock: 128 fS, 192 fS, 256 fS, 384 fS,
      512 fS, 768 fS, 1152 fS
    • Differential Voltage Output: 8 VPP
    • Analog Low-Pass Filter Included
    • 4x/8x Oversampling Digital Filter:
      • Passband Ripple: ±0.0018 dB
      • Stop Band Attenuation: –75 dB
    • Zero Flags (16-, 20-, 24-Bits)
  • Flexible Audio Interface:
    • I/F Format: I2S, Left-/Right-Justified, DSP
    • Data Length: 16, 20, 24, 32 Bits
  • Flexible Mode Control:
    • 3-Wire SPI, 2-Wire I2C-Compatible Serial
      Control Interface, or Hardware Control
    • Connect Up To 4 Devices on One SPI Bus
  • Multi Functions via SPI or I2C I/F:
    • Audio I/F Format Select: I2S, Left-Justified,
      Right-Justified, DSP
    • Digital Attenuation and Soft Mute
    • Digital De-Emphasis: 32kHz, 44.1kHz, 48kHz
    • Data Polarity Control
    • Power-Save Mode
  • Multi Functions via Hardware Control:
    • Audio I/F Format Select: I2S, Left-Justified
    • Digital De-Emphasis Filter: 44.1kHz
  • Analog Mute by Clock Halt Detection
  • External Reset Pin
  • Power Supplies:
    • 5 V for Analog and 3.3 V for Digital
  • Package: TSSOP-24
  • Operating Temperature Range: –40°C to 85°C
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Description

The PCM1789 is a high-performance, single-chip, 24-bit, stereo, audio digital-to-analog converter (DAC) with differential outputs. The two-channel, 24-bit DAC employs an enhanced multi-level, delta-sigma (ΔΣ) modulator, and supports 8 kHz to 192 kHz sampling rates and a 16-, 20-, 24-, 32-bit width digital audio input word on the audio interface. The audio interface of PCM1789 supports a 24-bit, DSP format in addition to I2S, left-justified, and right-justified formats.

The PCM1789 can be controlled through a three-wire, SPI-compatible or two-wire, I2C-compatible serial interface in software, which provides access to all functions including digital attenuation, soft mute, de-emphasis, and so forth. Also, hardware control mode provides two user-programmable functions through two control pins. The PCM1789 is available in a 24-pin TSSOP package.

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Technical documentation

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Type Title Date
* Data sheet PCM1789 24-Bit, 192-kHz Sampling, Enhanced Multi-Level ΔΣ, Stereo, Audio Digital-to-Analog Converter datasheet (Rev. B) Aug. 31, 2015
User guide DEM-DAI1789 EVM User Guide Apr. 30, 2009
Application note Dynamic Performance Testing of Digital Audio D/A Converters Oct. 02, 2000
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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Software development

SUPPORT SOFTWARE Download
SLAC271.ZIP (5898 KB)

Design tools & simulation

SIMULATION MODEL Download
SBAM145.ZIP (32 KB) - IBIS Model
SIMULATION TOOL Download
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 (...)
Features
  • 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

Package Pins Download
TSSOP (PW) 24 View options

Ordering & quality

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