Inicio Audio, háptica y piezoeléctrica Convertidores de audio DAC de audio
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Audio, háptica y piezoeléctrica
Convertidores de audio
DAC de audio

PCM1791A

ACTIVO

DAC estéreo con SNR de 113 dB (control por software)

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Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
TAD5212 ACTIVO Convertidor analógico a digital (DAC) de audio estéreo de alto rendimiento con rango dinámico de 120 7-dB higher performance with integrated headphone amplifier, SW controlled, QFN package

PCM1791A

ACTIVO
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Detalles del producto

Number of DAC channels 2 Sampling rate (min) (kHz) 10 Sampling rate (max) (kHz) 192 THD+N (dB) -100 Control interface I2C, SPI Resolution (Bits) 24 DAC SNR (typ) (dB) 113 Analog outputs 2 Architecture Advanced Segment Operating temperature range (°C) -25 to 85 Rating Catalog
Number of DAC channels 2 Sampling rate (min) (kHz) 10 Sampling rate (max) (kHz) 192 THD+N (dB) -100 Control interface I2C, SPI Resolution (Bits) 24 DAC SNR (typ) (dB) 113 Analog outputs 2 Architecture Advanced Segment Operating temperature range (°C) -25 to 85 Rating Catalog
SSOP (DB) 28 79.56 mm² (10.2 mm × 7.8 mm)
  • 24-Bit Resolution
  • Analog Performance:
    • Dynamic Range: 113 dB
    • THD+N: 0.001%
    • Full-Scale Output: 2.1 V RMS (at Postamp)
  • Differential Voltage Output: 3.2 Vp-p
  • 8× Oversampling Digital Filter:
    • Stop-Band Attenuation: –82 dB
    • Pass-Band Ripple: ±0.002 dB
  • Sampling Frequency: 10 kHz to 200 kHz
  • System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect
  • Accepts 16-, 20-, and 24-Bit Audio Data
  • PCM Data Formats: Standard, I2S, and Left-Justified
  • DSD Format Interface Available
  • Optional Interface to External Digital Filter or DSP Available
  • TDMCA or Serial Port (SPI/I2C)
  • User-Programmable Mode Controls:
    • Digital Attenuation: 0 dB to –120 dB, 0.5 dB/Step
    • Digital De-Emphasis
    • Digital Filter Rolloff: Sharp or Slow
    • Soft Mute/PCM Format
    • Zero Detect Mute/PCM Format
    • Zero Flag for Each Output/PCM and DSD Formats
  • Dual Supply Operation:
    • 5-V Analog, 3.3-V Digital
  • 5-V Tolerant Digital Inputs
  • Small 28-Lead SSOP Package
  • APPLICATIONS
    • A/V Receivers
    • DVD Movie Players
    • SACD Player
    • HDTV Receivers
    • Car Audio Systems
    • Digital Multitrack Recorders
    • Other Applications Requiring 24-Bit Audio
  • 24-Bit Resolution
  • Analog Performance:
    • Dynamic Range: 113 dB
    • THD+N: 0.001%
    • Full-Scale Output: 2.1 V RMS (at Postamp)
  • Differential Voltage Output: 3.2 Vp-p
  • 8× Oversampling Digital Filter:
    • Stop-Band Attenuation: –82 dB
    • Pass-Band Ripple: ±0.002 dB
  • Sampling Frequency: 10 kHz to 200 kHz
  • System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect
  • Accepts 16-, 20-, and 24-Bit Audio Data
  • PCM Data Formats: Standard, I2S, and Left-Justified
  • DSD Format Interface Available
  • Optional Interface to External Digital Filter or DSP Available
  • TDMCA or Serial Port (SPI/I2C)
  • User-Programmable Mode Controls:
    • Digital Attenuation: 0 dB to –120 dB, 0.5 dB/Step
    • Digital De-Emphasis
    • Digital Filter Rolloff: Sharp or Slow
    • Soft Mute/PCM Format
    • Zero Detect Mute/PCM Format
    • Zero Flag for Each Output/PCM and DSD Formats
  • Dual Supply Operation:
    • 5-V Analog, 3.3-V Digital
  • 5-V Tolerant Digital Inputs
  • Small 28-Lead SSOP Package
  • APPLICATIONS
    • A/V Receivers
    • DVD Movie Players
    • SACD Player
    • HDTV Receivers
    • Car Audio Systems
    • Digital Multitrack Recorders
    • Other Applications Requiring 24-Bit Audio

The PCM1791A is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1791A provides balanced voltage outputs, allowing the user to optimize analog performance externally. The PCM1791A accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The PCM1791A also accepts interface to external digital filter devices (DF1704, DF1706, PMD200). Sampling rates up to 200 kHz are supported. A full set of user-programmable functions is accessible through an SPI or I2C serial control port, which supports register write and readback functions. The PCM1791A also supports the time-division-multiplexed command and audio (TDMCA) data format.

The PCM1791A is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1791A provides balanced voltage outputs, allowing the user to optimize analog performance externally. The PCM1791A accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The PCM1791A also accepts interface to external digital filter devices (DF1704, DF1706, PMD200). Sampling rates up to 200 kHz are supported. A full set of user-programmable functions is accessible through an SPI or I2C serial control port, which supports register write and readback functions. The PCM1791A also supports the time-division-multiplexed command and audio (TDMCA) data format.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos 24-Bit 192 kHz Sampling Advanced Segment Audio Stereo DAC datasheet (Rev. B) 30/11/2006
Nota sobre la aplicación A Low Noise, Low Distortion Design for Antialiasing and Anti-Imaging Filters 27/09/2000
Nota sobre la aplicación THD+N Versus Frequency Characteristics and Spectra of the PCM1717/18/19/20/23/27 27/09/2000

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Controlador o biblioteca

PCM179XSW-LINUX — Controlador Linux para PCM179X

The Linux driver supports the PCM179x device family of audio digital-to-analog converters (DACs), communication through I2C and SPI, and registers with the ASOC framework of the Linux kernel.

Linux main line status

Available in Linux main line: Yes
Available through git.ti.com: N/A

Linux source files

(...)

Productos y hardware compatibles
GUI para el módulo de evaluación (EVM)

SLAC246 — PCM1791EVM - Graphical User Interface (GUI) Software

Productos y hardware compatibles
Modelo de simulación

PCM1791 IBIS Model

SLEM010.ZIP (23 KB) - Modelo IBIS
Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SSOP (DB) 28 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

Ver todos los temas del foro en inglés

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