Texas Instruments PCM3001E/2K

Overview

PCM3001E/2K from Texas Instruments is an 18-bit stereo audio codec 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. It operates from a single 5-V supply in SSOP-28 package and targets cost-sensitive consumer audio systems requiring THD+N ≤ –90 dB (DAC) and SNR ≥ 98 dB.

For engineers reviewing the PCM3001E/2K datasheet, PCM3001E/2K pinout, PCM3001E/2K application, or PCM3001E/2K equivalent, key selection criteria include its pin-strapped format control (FMT0–FMT2), 4–48 kHz sampling rate support, system clock options (256/384/512×f_S), analog input range (2.9 V_p-p), and DAC output common (VCOM) architecture for single-ended line-level output stages.

Technical Context

The PCM3001E/2K implements dual delta-sigma modulation: 64× oversampled ADCs with digital high-pass filtering and 8× oversampled DACs with digital de-emphasis and soft mute. Its analog front-end accepts single-ended inputs referenced to VREFL/VREFR, while the DAC output stage includes integrated analog low-pass filtering and VCOM-biased single-ended outputs.

Pin-based format configuration (FMT0/FMT1/FMT2) selects among seven I²S, left/right-justified, or DSP-frame data formats without software interface-distinguishing it from the serially programmable PCM3000. System clock detection automatically adapts to 256/384/512×f_S, internally deriving 256×f_S for digital filter operation regardless of input clock ratio.

Key Specifications

Pinout & Package

Package: 28-pin SSOP (DB), 0.209-inch body width, 0.025-inch pitch - suitable for compact consumer PCB layouts with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PCM3000E/2K and AK4552VN, PCM3001E/2K offers deterministic hardware-configured operation ideal for cost-sensitive, firmware-minimal consumer audio-trading runtime flexibility for reduced BOM and simplified bring-up.

Availability

PCM3001E/2K is available at Aetrix Electronics and suitable for mini-disk recorders, hard-disk audio recorders, karaoke systems, and DSP-based car stereo applications requiring stable component supply and long-term industrial availability.

Supply support for PCM3001E/2K 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 broad industrial and consumer market reach.

The PCM3001E/2K belongs to TI's legacy audio codec product line designed for cost-effective, high-fidelity stereo audio conversion in consumer electronics where pin-strapped simplicity and single-supply operation are critical.

FAQ

What is the primary functional difference between PCM3001E/2K and PCM3000E/2K?

The PCM3001E/2K uses pin-strapping (FMT0/FMT1/FMT2) to select among seven audio data formats at power-on, eliminating firmware dependency. In contrast, the PCM3000E/2K requires a three-wire serial interface (MC/MD/ML) for format and feature configuration-including digital de-emphasis, attenuation, and loopback-which the PCM3001E/2K does not support. Both share identical ADC/DAC core performance and pin-compatible SSOP-28 packaging.

Does PCM3001E/2K support 16-bit or 18-bit data word lengths?

Yes, PCM3001E/2K supports both 16-bit and 18-bit data word lengths depending on selected format-e.g., Format 0 and Format 2 use 16-bit words, while Formats 1, 3, 4, 5, and 6 support 18-bit operation. The device automatically adapts to the configured format's bit depth without requiring register writes, as format selection is determined solely by FMT0–FMT2 pin states at power-up.

What are the absolute maximum ratings for analog supply voltages on PCM3001E/2K?

The PCM3001E/2K specifies absolute maximum analog supply voltages of –0.3 V to 6.5 V on VCC1 and VCC2. Exceeding these limits risks permanent damage. Recommended operating range is 4.5 V to 5.5 V. The device also enforces ±0.1 V maximum differential between VCC1 and VCC2 to prevent internal bias violations-critical for maintaining ADC/DAC accuracy and avoiding latch-up.

How does the system clock detection work on PCM3001E/2K?

The PCM3001E/2K includes an internal clock detection circuit that automatically identifies whether the applied system clock is 256×f_S, 384×f_S, or 512×f_S. Regardless of input ratio, it internally divides down to a stable 256×f_S clock for digital filter and modulator operation-ensuring consistent latency and filter response. This allows designers to source clocks from crystals or external oscillators without modifying firmware or timing constraints.

Can PCM3001E/2K operate with a 3.3-V digital supply?

No, PCM3001E/2K requires a 4.5–5.5 V digital supply (VDD) and analog supplies (VCC1/VCC2). Its digital I/O thresholds are TTL-compatible and specified for 5-V operation; using 3.3 V violates recommended operating conditions and may cause unreliable logic-level recognition on pins such as FMT0–FMT2, RSTB, and LRCIN. For 3.3-V systems, level-shifting or alternative codecs like AK4552VN must be considered.