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Texas Instruments PCM2903CDBR — Discrete Semiconductors

PCM2903CDBR USB Stereo Audio Codec, 16-bit, 28-SSOP

MPNPCM2903CDBR
End of Life

Texas Instruments PCM2903CDBR Stereo Audio Codec, USB Interface, 16-bit Resolution, 2 ADC / 2 DAC, 28-SSOP Package, Tape & Reel.

$12.09Ref. price · indicative, final on quote
Texas Instruments PCM2903CDBR datasheet (PDF)
Packaging28-SSOP (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

PCM2903CDBR specifications
ParameterValue
TypeStereo Audio
MountingSurface Mount
Voltage - supply, analog3V ~ 3.6V
Voltage - supply, digital3V ~ 3.6V
InterfaceUSB
Operating temperature-25°C ~ 85°C
PackageTape & Reel (TR); Cut Tape (CT)
Sigma deltaYes
Case28-SSOP (0.209\", 5.30mm Width)
Resolution16 b
Number of ADCs (DACs)2 / 2
S (N ratio, ADCs, DACs (db) typ)89 / 96
Dynamic range, ADCs (DACs (db) typ)89 / 93

Product details

USB audio codec with integrated analog front-end

The PCM2903CDBR is a stereo audio codec from Texas Instruments that integrates a USB interface, making it a single-chip solution for USB audio streaming applications. It handles both analog-to-digital and digital-to-analog conversion with 16-bit resolution. The codec includes two ADCs and two DACs, supporting stereo capture and playback over a USB connection without requiring a separate audio controller or driver development for standard operating systems. Sigma-delta modulation is employed for the conversion stages, which contributes to the dynamic range figures: 89 dB for the ADC path and 93 dB for the DAC path, with corresponding signal-to-noise ratios of 89 dB and 96 dB respectively.

Supply rail and temperature range

This simplifies the power tree in USB-powered designs where the bus voltage is regulated down to 3.3 V.

28-SSOP package and board integration

The supplier device package is specified as 28-SSOP, confirming the footprint matches standard SSOP-28 land patterns.

Frequently asked questions

What is the audio performance of the PCM2903CDBR?

The codec delivers 16-bit resolution with a sigma-delta architecture. The ADC path achieves 89 dB SNR and 89 dB dynamic range; the DAC path achieves 96 dB SNR and 93 dB dynamic range. These figures are typical at the nominal supply voltage.

What package does the PCM2903CDBR come in?

It is supplied in a 28-SSOP package (0.209-inch body width, 5.30 mm pitch) for surface-mount assembly. Packaging options include Tape & Reel and Cut Tape.

What supply voltages does the PCM2903CDBR require?

A single 3.3 V rail is sufficient to power the entire device, which aligns with typical USB bus-derived supplies.

Is the PCM2903CDBR RoHS compliant?

Yes, it is RoHS3 compliant, meaning it meets the latest EU directive without exemptions for restricted substances.