Texas Instruments PCM3052ARTFR

Overview

PCM3052ARTFR from Texas Instruments is a 24-bit, 96-kHz stereo audio codec IC integrating ADC, DAC, microphone amplifier (34-dB gain), bias generator (0.75×VCC1), stereo line input multiplexer, and programmable gain amplifier (–4 to +20 dB). It operates with dual supplies (5 V analog / 3.3 V digital), supports I²S-only 24-bit audio data format, and delivers 101 dB SNR (ADC) and 105 dB SNR (DAC) for PC audio recorder/player applications.

For engineers reviewing the PCM3052ARTFR datasheet, PCM3052ARTFR pinout, PCM3052ARTFR application, or PCM3052ARTFR equivalent, key selection considerations include its VQFN-32 package, 256×f_S system clock requirement, independent ADC/DAC power-down control, S/PDIF output capability, and integrated high-pass filter (0.91 Hz at f_S = 48 kHz).

Technical Context

The PCM3052ARTFR employs fifth-order delta-sigma modulation with 64× oversampling in the ADC path and an 8-level delta-sigma modulator with 8× interpolation filtering in the DAC path. Its decimation filter includes a configurable high-pass filter, while the DAC interpolation filter provides ±0.03 dB pass-band ripple and –50 dB stop-band attenuation.

Control is implemented via I²C interface (SCL/SDA/I2CEN/ADR) supporting digital de-emphasis (32/44.1/48 kHz), soft mute, HPF bypass, and S/PDIF output enable. Power management includes both external PDWN pin control and independent software-controlled ADC/DAC shutdown.

Key Specifications

Pinout & Package

VQFN-32 (RTF) package: 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AK4556VN and CS4272-CQZ, the PCM3052ARTFR uniquely integrates microphone bias, S/PDIF output, and I²C-configurable HPF in a cost-optimized VQFN-32 package - making it ideal for consumer PC audio where component count and BOM cost are critical.

Availability

PCM3052ARTFR is available at Aetrix Electronics and suitable for USB audio interfaces, PC sound cards, VoIP conference devices, and portable digital recorders requiring stable component supply and long-term production continuity.

Supply support for PCM3052ARTFR 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 connectivity technologies for industrial, automotive, and personal electronics markets.

The PCM3052ARTFR belongs to TI's audio codec product line, designed specifically for cost-sensitive PC and consumer audio applications demanding high performance, integration, and ease of system design.

FAQ

What is the system clock requirement for PCM3052ARTFR?

The PCM3052ARTFR requires a precise system clock of 256 × f_S, where f_S is the audio sampling rate (16–96 kHz). For example, at 48 kHz sampling, the system clock must be 12.288 MHz. This clock (SCKI) drives the delta-sigma modulators and digital filters; deviation causes aliasing or instability. The PCM3052ARTFR does not support PLL-based clock multiplication - external crystal oscillator or clock generator must provide exact frequency.

Does PCM3052ARTFR support I²S and left-justified data formats?

No, the PCM3052ARTFR supports I²S format only - it does not support left-justified, right-justified, or DSP-mode audio data formats. The device implements MSB-first, 2's complement, 24-bit I²S timing with standard BCK and LRCK signaling. Attempting to use non-I²S protocols will result in incorrect data framing and audio corruption. All register configuration and audio streaming must conform to I²S specification as defined in the PCM3052ARTFR datasheet.

Can PCM3052ARTFR operate with a single 3.3-V supply?

No, the PCM3052ARTFR requires separate analog and digital supplies: 4.5–5.5 V for analog sections (VCC1/VCC2/VCC3) and 3.0–3.6 V for digital (VDD). Using 3.3 V on analog rails violates absolute maximum ratings and degrades SNR, THD+N, and full-scale input/output swing. The internal reference generators (VREF1, REFO, MBIAS) depend on 5-V analog supply to achieve specified 0.5×VCC and 0.75×VCC outputs. Operating outside recommended conditions risks noncompliance with datasheet AC/DC specifications.

How is microphone bias generated on PCM3052ARTFR?

The PCM3052ARTFR generates microphone bias internally at 0.75 × VCC1 (typically 3.75 V when VCC1 = 5 V) on the MBIAS pin (27), capable of sourcing 1 mA. This eliminates external bias resistors and improves PSRR over discrete solutions. The bias voltage is regulated and filtered internally; a 10-µF decoupling capacitor is required at MBIAS to suppress noise. The PCM3052ARTFR does not support adjustable bias voltage - it is fixed at 0.75×VCC1 and cannot be reconfigured via I²C or pin strapping.

What is the purpose of the L/M pin on PCM3052ARTFR?

The L/M pin (3) is an open-drain output that indicates the current ADC input source: logic HIGH = line input selected (VINL/VINR active), logic LOW = microphone input selected (MINP/MINM active). It is driven by internal multiplexer control and updates synchronously with I²C register writes to the input select bits. This pin enables external LED indication or microcontroller status monitoring without polling registers - simplifying system-level input source awareness in PCM3052ARTFR-based designs.