Texas Instruments PCM3001EG

Overview

PCM3001EG from Texas Instruments is an 18-bit stereo audio codec IC integrating monolithic delta-sigma ADC and DAC with single-ended analog voltage inputs/outputs, 64× oversampling ADC digital decimation filter, 8× oversampling DAC digital interpolation filter, and pin-programmable audio data format selection (7 formats). It operates from a single 5-V supply in SSOP-28 package and targets cost-sensitive consumer audio systems requiring high-fidelity conversion.

For engineers reviewing the PCM3001EG datasheet, PCM3001EG pinout, PCM3001EG application, or PCM3001EG equivalent, key selection criteria include its 94 dB SNR ADC performance, 98 dB SNR DAC performance, ±0.17 dB pass-band ripple in DAC digital filter, 4 kHz–48 kHz sampling rate support, and pin-strapped I²S/right-justified/left-justified/DSP-frame format compatibility.

Technical Context

The PCM3001EG implements dual delta-sigma modulation architecture: stereo 18-bit ADCs use 64× oversampling with digital high-pass filtering and decimation, while stereo 18-bit DACs employ 8× oversampling with digital interpolation, de-emphasis, soft mute, and infinite zero detection. All digital filters are fixed-function and internally clocked from system clock (256/384/512 × f_S).

Pin-based format control uses FMT0–FMT2 (pins 27/26/25) to select among seven serial interface modes including I²S, left-justified, right-justified, and DSP-frame - eliminating need for software configuration. Analog front-end supports single-ended 2.9 V_p-p full-scale input with 15 kΩ input impedance and integrated antialiasing filter (170 kHz –3 dB with 470 pF external capacitor).

Key Specifications

Pinout & Package

PCM3001EG is housed in a 28-pin SSOP (Shrink Small Outline Package) with 0.65 mm pitch, JEDEC MO-153 compliant, footprint size 10.2 mm × 5.3 mm × 1.95 mm max height. Thermal resistance θ_JA = 100 °C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PCM3000EG, PCM3001EG trades software flexibility for reduced BOM and firmware overhead via pin-strapping; versus AK4552VN, it offers simpler 5-V system integration and lower cost at the expense of resolution and channel count - making PCM3001EG ideal for fixed-configuration consumer audio where ease of use and supply voltage simplicity are prioritized.

Availability

PCM3001EG is available at Aetrix Electronics and suitable for sampling keyboards, digital mixers, karaoke systems, and DSP-based car stereo applications requiring stable component supply, long-term industrial availability, and consistent electrical performance across temperature and voltage ranges.

Supply support for PCM3001EG 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 with over 50 years of innovation in precision data converters and audio solutions.

The PCM3000/3001 product line was designed specifically for cost-sensitive consumer audio equipment requiring high-fidelity, single-supply stereo conversion without external configuration logic - targeting mini-disc recorders, hard-disk audio recorders, and karaoke systems in the early 2000s.

FAQ

What is the maximum sampling frequency supported by the PCM3001EG?

The PCM3001EG supports sampling frequencies from 4 kHz up to 48 kHz, as confirmed in the Electrical Characteristics table and Recommended Operating Conditions section of the SBAS055A datasheet. At 48 kHz, the device requires a system clock of 24.576 MHz (512 × f_S) and maintains full 18-bit performance with specified THD+N and SNR values.

Does the PCM3001EG require external analog filters for antialiasing and reconstruction?

The PCM3001EG integrates internal digital decimation and interpolation filters but requires external passive components for analog antialiasing (CINPL/CINNL/CINPR/CINNR pins) and analog output low-pass filtering is implemented internally. The datasheet specifies a 470 pF capacitor per channel for the antialiasing network, achieving 170 kHz –3 dB cutoff; no external reconstruction filter is needed due to the on-chip analog low-pass stage.

How does the PCM3001EG handle loss of synchronization between LRCIN and the system clock?

When phase jitter causes LRCIN to drift more than 6 bit clocks relative to the system clock within one sample period, the PCM3001EG halts internal DAC and ADC operation within 1/f_S and forces VOUTL/VOUTR to bipolar zero (VCC2/2) and DOUT to zero codes. Resynchronization restores normal operation automatically - preventing pop/click artifacts and ensuring robust behavior in noisy clock environments.

Can the PCM3001EG operate from a 3.3-V supply?

No, the PCM3001EG is specified only for 4.5 V to 5.5 V operation on all supplies (VCC1, VCC2, VDD), as stated in Absolute Maximum Ratings and Recommended Operating Conditions. Attempting 3.3-V operation violates datasheet limits and will result in undefined functionality, including failure of analog front-end biasing and digital logic thresholds.

What are the valid system clock frequencies for the PCM3001EG at 44.1 kHz sampling rate?

At f_S = 44.1 kHz, the PCM3001EG accepts system clock frequencies of 11.2896 MHz (256 × f_S), 16.9344 MHz (384 × f_S), or 22.5792 MHz (512 × f_S), per Table 1 in the SBAS055A datasheet. The device automatically detects and divides higher-frequency clocks down to 256 × f_S for internal digital filter operation.