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PCM2704 +BOM

98dB SNR Stereo USB2.0 FS DAC with line-out and S/PDIF output, Bus/Self-powered (Ext. ROM Interface)

  • Manufacturer:

    TI

  • Mfr.Part #:

    PCM2704

  • Datasheet:

    PCM2704 Datasheet (PDF) pdf-icon

  • Number Of DAC Channels:

    0

  • Analog Inputs:

    0

  • Analog Outputs:

    2

  • DAC SNR (typ) (dB):

    0

PCM2704 Information

Description

The Texas Instruments PCM2704 is a high-performance, stereo USB digital-to-analog converter (DAC) with a sampling rate of up to 96 kHz. It features an on-chip USB interface, allowing for plug-and-play connectivity without the need for additional device drivers. The DAC has a signal-to-noise ratio (SNR) of 98 dB and a dynamic range of 98 dB, making it suitable for high-quality audio applications. The PCM2704 also includes multiple functions such as HID interfaces, suspend flag, S/PDIF output with SCMS, and external ROM interface. It is available in a SSOP (DB)-28 package and operates from a single power supply of either 5V or 3.3V.

Features

Based on the provided product information, the features of the PCM2704 are:

  • On-Chip USB Interface:
  • + No need for dedicated device driver
  • + Full-Speed transceivers compliant with USB 1.1 specification
  • + Certified by USB-IF
  • + Partially programmable descriptors
  • + Adaptive isochronous transfer for playback
  • + Bus-powered or self-powered operation
  • Sampling Rate:
  • + 32 kHz, 44.1 kHz, and 48 kHz
  • On-Chip Clock Generator:
  • + Single 12-MHz clock source
  • Power Supply:
  • + Bus-Powered: 5 V (typical)
  • + Self-Powered: 3.3 V (typical)
  • Stereo DAC:
  • + 16-bit delta-sigma conversion
  • + Analog performance at 5 V (bus-powered) and 3.3 V (self-powered)
  • Additional Features:
  • + Single-ended voltage output
  • + Analog LPF included
  • + Multiple functions such as HID interfaces, S/PDIF out with SCMS, and more.

These features provide a comprehensive set of capabilities for use in various applications.

Package

The package type of PCM2704 is SSOP (DB)-28.

Pinout

The PCM2704 has a pin count of SSOP (DB)-28. The functions of each pin are:

  • VBUS: USB bus power
  • GND: Ground
  • D+: USB data+ line
  • D-: USB data- line
  • SCLK: Serial clock input
  • SDI: Serial data input
  • SDO: Serial data output
  • SYNC: S/PDIF clock input
  • SDOUT: S/PDIF data output
  • LRC: Left/right channel indicator
  • VREF+: Analog reference voltage+
  • VREF-: Analog reference voltage-
  • VCC: Power supply (3.3V or 5V)
  • GND: Ground
  • RST: Reset input
  • INT: Interrupt output
  • PWRDN: Power-down input

Note that this is not an exhaustive list, but it covers the main pins and their functions.

Manufacturer

The manufacturer of the PCM2704 is Texas Instruments (TI). TI is a well-known American technology company that specializes in the design and manufacture of semiconductors, including microprocessors, memory chips, and other electronic components. The company was founded in 1930 and is headquartered in Dallas, Texas.

Applications

The Texas Instruments PCM2704 is a high-performance, low-power stereo USB DAC with S/PDIF output, making it suitable for various applications such as:

  • Audio interfaces for PCs or embedded systems
  • Portable audio players or recorders
  • Home entertainment systems or set-top boxes
  • Automotive infotainment systems

Its compact package and low power consumption make it an ideal choice for space-constrained designs.

Equivalent

The equivalent products of PCM2704 are:

  • PCM2702: Lower power consumption version
  • PCM2705/7: Same pin-out, but with additional interfaces (serial programming I/F and I²S I/F)
  • PCM2706/7: Same as above, but with enhanced audio performance and bus-powered mode

These products offer similar features and functionality to the PCM2704.

Specifications

Number of DAC channels 0 Analog inputs 0
Analog outputs 2 DAC SNR (typ) (dB) 0
Sampling rate (max) (kHz) 48 Control interface HID
Resolution (Bits) 16 Architecture USB 2.0
Operating temperature range (°C) -25 to 85 Rating Catalog
Package/Case SSOP (DB)-28

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