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PCM2704CDB

TIPCM2704CDB

Texas Instruments
Audio 16 b 48k SPI, USB 28-SSOP
NRND143 in stock

Overview

The PCM2704CDB is a monolithic CMOS chip that includes a USB 2.0-compliant full-speed transceiver, a 16-bit delta-sigma stereo DAC, and an analog low-pass filter. It is designed to bridge USB interfaces directly to analog audio outputs, supporting sampling rates up to 48 kHz without requiring custom device drivers.

Why Choose This Part

The device eliminates the need for complex driver development by using standard USB Audio Class descriptors and HID support for volume and mute buttons. It operates from a single 12-MHz clock source and provides a low-power suspend mode with a standby current of only 190uA.

Applications

USB Headphones
Integrated DAC and headphone amplifier capabilities for bus-powered audio peripherals.
USB Audio DONGLEs
Compact external sound cards providing line-level or headphone output from a PC or mobile device.
Digital Speakers
Direct USB connection for active speaker systems with hardware volume and mute controls.
Portable Media Docks
Audio output expansion for self-powered or bus-powered consumer electronics docks.

Key Specifications

Type Audio
Mounting Type Surface Mount
Data Interface SPI, USB
Package / Case 28-SSOP (0.209", 5.30mm Width)
Voltage - Supply 3V ~ 3.6V, 5V
Resolution (Bits) 16 b
Number of Channels 2
Operating Temperature -25degC ~ 85degC
Voltage Supply Source Analog and Digital
Supplier Device Package 28-SSOP
Sampling Rate (Per Second) 48k

Getting Started

Evaluation can be performed using the PCM2704CEVM-U development kit. Since it is a class-compliant USB device, it is automatically recognized by Windows, macOS, and Linux, allowing for immediate testing by connecting the 12-MHz crystal and necessary decoupling capacitors.

Also Consider

PCM2902C TITexas Instruments - Includes both a stereo DAC and a stereo ADC for full-duplex USB audio recording and playback.