Texas Instruments PCM3052ARTF

Overview

PCM3052ARTF from Texas Instruments is a 24-bit, 96-kHz stereo audio codec IC integrating ADC, DAC, microphone amplifier (34-dB gain), bias generator (1 mA at 3.75 V), stereo line input multiplexer, and programmable gain amplifier (–4 dB to +20 dB). It operates with dual supplies (5 V analog, 3.3 V digital), supports I²S-only 24-bit audio data format, and targets cost-sensitive PC audio recorder/player systems.

For engineers reviewing the PCM3052ARTF datasheet, PCM3052ARTF pinout, PCM3052ARTF application, or PCM3052ARTF equivalent, key selection criteria include its 101 dB ADC SNR, 105 dB DAC SNR, 256×f_S system clock requirement, VQFN-32 package, and integrated S/PDIF output capability for digital audio routing.

Technical Context

The PCM3052ARTF employs fifth-order delta-sigma modulation with 64× oversampling in the ADC path and an 8-level multibit delta-sigma modulator with 8× interpolation filtering in the DAC path. Its decimation filter includes a configurable high-pass filter (0.91 Hz at f_S = 48 kHz) and ±0.05 dB pass-band ripple.

Digital control is implemented via I²C interface (5-V tolerant SDA/SCL/I2CEN/ADR pins), enabling configuration of digital de-emphasis (32/44.1/48 kHz), soft mute, HPF bypass, and S/PDIF output enable. Power-down is managed either through the external PDWN pin (active LOW) or independently via register control.

Key Specifications

Pinout & Package

VQFN-32 (RTF) package: 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad. Pin 1 marked by top-side dot; thermal pad soldered to PCB ground for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AK4556VN and CS42L52-CQZ, the PCM3052ARTF uniquely integrates microphone amplifier, bias, and S/PDIF output in a single VQFN-32 package - reducing component count and layout complexity for cost-sensitive PC audio and USB peripheral designs.

Availability

PCM3052ARTF is available at Aetrix Electronics and suitable for USB audio interfaces, PC sound cards, VoIP speakerphones, and portable digital recorders requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for PCM3052ARTF 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 with over 90 years of innovation in precision signal chain solutions.

The PCM3052ARTF belongs to TI's audio codec product line, designed specifically for cost-optimized, high-fidelity stereo audio capture and playback in PC peripherals, USB audio devices, and embedded voice systems.

FAQ

What is the required system clock frequency for PCM3052ARTF at 48 kHz sampling rate?

The PCM3052ARTF requires a system clock (SCKI) of exactly 256 × f_S. At 48 kHz sampling rate, this equals 12.288 MHz. The device does not support fractional or variable clock ratios - deviation beyond ±0.1% may cause bit errors or loss of synchronization in the I²S interface. PCM3052ARTF internal timing generators rely strictly on this clock for delta-sigma modulation stability and filter coefficient accuracy.

Does PCM3052ARTF support left-justified or right-justified audio data formats?

No, PCM3052ARTF supports I²S format only - it does not implement left-justified, right-justified, or DSP-mode audio data protocols. The device expects MSB-first, 24-bit I²S data aligned with LRCK edge transitions. Attempting to use non-I²S formats will result in corrupted audio output or no valid data transfer. PCM3052ARTF's serial interface is hardwired for I²S timing and cannot be reconfigured via registers.

Can PCM3052ARTF operate with a single 3.3 V supply for both analog and digital sections?

No. PCM3052ARTF requires separate analog (5 V) and digital (3.3 V) supplies: VCC1/VCC2/VCC3 must be 4.5–5.5 V, and VDD must be 3.0–3.6 V. Using 3.3 V on VCC pins violates absolute maximum ratings and causes failure of analog functions including microphone amplifier, PGA, ADC, and DAC output stages. PCM3052ARTF's architecture depends on 5 V analog rails to achieve 4 V_p-p DAC output swing and 3 V_p-p ADC full-scale input range.

What is the function of the L/M pin on PCM3052ARTF?

The L/M (Line/Microphone) pin (Pin 3) is an open-drain output that indicates the currently selected analog input source: logic HIGH when line input (VINL/VINR) is active, logic LOW when microphone input (MINP/MINM) is selected. This status signal is generated internally and requires an external pull-up resistor. PCM3052ARTF uses this pin to provide real-time hardware feedback to the system controller, enabling automatic input-source awareness without I²C register reads.

Is PCM3052ARTF compatible with 1.8 V I²C controllers?

Yes - the I²C interface pins (SDA, SCL, I2CEN, ADR) are 5-V tolerant Schmitt-trigger inputs with internal 50-kΩ pulldown resistors. They accept logic HIGH thresholds up to 5.5 V and can interface directly with 1.8 V, 3.3 V, or 5 V controllers without level shifters. However, the SDA pin is open-drain, so the 1.8 V controller must provide appropriate pull-up voltage (typically to 1.8 V) and meet timing requirements for rise/fall times. PCM3052ARTF's I²C compliance ensures robust communication across mixed-voltage systems.