Texas Instruments PCM3003E

Overview

PCM3003E from Texas Instruments is a 20-bit stereo audio codec IC integrating monolithic delta-sigma ADC and DAC with single-ended analog input/output, 3-V operation, hardware-controlled mode selection, and SSOP-24 packaging. It delivers 94 dB SNR (DAC), –86 dB THD+N, 64× oversampling, and supports 4–48 kHz sampling rates for portable digital audio systems.

For engineers reviewing the PCM3003E datasheet, PCM3003E pinout, PCM3003E application, or PCM3003E equivalent, key selection criteria include hardware-selectable 16/20-bit data format via 20BIT pin, independent ADC/DAC power-down control (PDAD/PDDA), de-emphasis support at 32/44.1/48 kHz, and compatibility with left/right-justified serial audio interfaces.

Technical Context

The PCM3003E implements separate delta-sigma modulation paths: 64× oversampled stereo ADC with digital decimation filter and high-pass offset cancellation, and 8× oversampled stereo DAC with interpolation filter, analog low-pass output stage, and digital de-emphasis. All digital filtering operates on a 256 fS base clock derived automatically from 256/384/512 fS SYSCLK inputs.

Hardware control logic governs mode selection-20BIT pin configures 16- or 20-bit data width; DEM0/DEM1 pins select de-emphasis frequency; PDAD and PDDA independently disable ADC and DAC sections. No software register interface is present, distinguishing it from the pin-compatible PCM3002E.

Key Specifications

Pinout & Package

PCM3003E is housed in a 24-pin SSOP (DB) package with 0.635-mm pitch, optimized for compact PCB layouts in space-constrained audio modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar stereo audio codec applications.

Compared with PCM3002E and TLV320AIC23B, the PCM3003E offers lowest BOM cost and simplest implementation for fixed-function stereo audio paths where hardware-only control suffices and 20-bit fidelity meets system requirements.

Availability

PCM3003E is available at Aetrix Electronics and suitable for digital still cameras, portable audio players, and voice recorders requiring stable component supply and long-term industrial availability.

Supply support for PCM3003E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and digital signal technologies for industrial, automotive, and consumer markets.

The PCM3003E belongs to TI's legacy audio codec product line designed for cost-sensitive, low-power stereo audio applications in portable electronics where hardware simplicity and proven reliability are prioritized over programmability.

FAQ

What is the primary functional distinction between PCM3003E and PCM3002E?

The PCM3003E uses hardware-only control via dedicated pins (PDAD, PDDA, DEM0, DEM1, 20BIT) for mode selection, while the PCM3002E relies on software configuration through a 3-wire serial interface. This makes PCM3003E ideal for systems lacking firmware resources, whereas PCM3002E supports dynamic reconfiguration. Both share identical 20-bit delta-sigma architecture and SSOP-24 packaging.

Does PCM3003E support I²S data format?

No, PCM3003E does not support I²S. It operates exclusively with left-justified ADC and right-justified DAC formats (formats 0 and 1). I²S and other formats (2 and 3) are available only on the software-configurable PCM3002E. The PCM3003E's 20BIT pin selects between 16-bit and 20-bit word length within those two justified formats.

What are the valid system clock (SYSCLK) frequencies for PCM3003E at 44.1 kHz sampling rate?

At 44.1 kHz sampling rate, PCM3003E accepts SYSCLK frequencies of 11.2896 MHz (256×f_S), 16.9344 MHz (384×f_S), or 22.5792 MHz (512×f_S). The internal clock detection circuit automatically divides 384×f_S and 512×f_S inputs down to 256×f_S for core digital filter and modulator operation.

Can PCM3003E operate from a 2.4-V supply?

Yes, PCM3003E supports 2.4 V minimum supply voltage-but only within the 0°C to 70°C temperature range and when using 256×f_S or 512×f_S SYSCLK (384×f_S is not available below 2.7 V). Full specification compliance (e.g., SNR, THD+N) is guaranteed across 2.7–3.6 V at –25°C to 85°C.

How does PCM3003E handle loss of synchronization between LRCIN and SYSCLK?

When LRCIN phase jitter exceeds ±6 bit clocks per frame, PCM3003E halts internal DAC/ADC operation within 1/f_S, forcing analog outputs to VCOM (0.5×VCC) and digital outputs to zero code. Resynchronization restores normal operation after t(DACDLY2) = 32/f_S and t(ADCDLY2) = 32/f_S delays. Discontinuities during transition may cause audible noise.