Texas Instruments TPA5052RSAR

Overview

TPA5052RSAR from Texas Instruments is a stereo digital audio lip-sync delay IC that accepts a single I²S serial input (16–24-bit), applies programmable sample-based delay up to 8191 samples per channel, and outputs delayed I²S data-enabling precise audio-video synchronization in flat-panel TVs and home theater systems at fs = 32–192 kHz.

For engineers reviewing the TPA5052RSAR datasheet, TPA5052RSAR pinout, TPA5052RSAR application, or TPA5052RSAR equivalent, this device delivers deterministic, hardware-configured delay with no external clock required, 5 V-tolerant I/O, and QFN-16 thermal-pad package optimized for compact AV processing boards.

Technical Context

The TPA5052RSAR implements a fixed-function delay pipeline with dual-channel synchronous buffering: audio data enters via BCLK/LRCLK/DATA, is stored in on-chip memory, and exits as delayed DATA_OUT with identical I²S timing structure. Delay is set entirely by five logic-level DEL[4:0] pins-no register writes or firmware needed.

All internal clocks derive from the incoming BCLK; no crystal, oscillator, or PLL is used. The device supports bit clock rates from 1.024 MHz to 12.288 MHz (32× to 64× fs), operates from 3.0 V to 3.6 V, and clears delay memory on power-up or DELx change to prevent output of stale data.

Key Specifications

Pinout & Package

TPA5052RSAR uses a 4 mm × 4 mm, 16-pin QFN package (RSA) with an exposed thermal pad requiring PCB soldering for thermal and mechanical integrity. Pin 1 is located in Quadrant Q2 per tape-and-reel orientation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital audio delay applications.

Compared with TAS3103A and CS8416-CZZ, the TPA5052RSAR provides the only dedicated, pin-strapped stereo delay solution offering 170 ms maximum delay, hardware-only configuration, and pop-free reconfiguration-making it optimal for cost-sensitive, fixed-function AV sync applications.

Availability

TPA5052RSAR is available at Aetrix Electronics and suitable for high-definition television manufacturing, home theater system integration, and flat-panel display design requiring stable component supply and long-lifecycle support.

Supply support for TPA5052RSAR 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 company specializing in analog, embedded processing, and digital signal technologies, with leadership in audio, power management, and interface solutions.

The TPA5052RSAR belongs to TI's audio timing and synchronization product line, designed specifically to solve deterministic audio-video alignment challenges in consumer display and entertainment systems without software intervention.

FAQ

What is the maximum delay achievable with the TPA5052RSAR at 48 kHz sampling rate?

The TPA5052RSAR achieves a maximum delay of 8191 samples per channel. At fs = 48 kHz, this equals 8191 ÷ 48,000 ≈ 170.6 ms. This value is confirmed in the datasheet's delay calculation formula and Table 1, and applies identically to both left and right channels.

Does the TPA5052RSAR require an external crystal or oscillator?

No, the TPA5052RSAR does not require any external crystal or oscillator. All internal timing-including delay memory clocking and output synchronization-is derived directly from the incoming BCLK signal, as explicitly stated in the "No External Crystal or Oscillator Required" feature and functional block diagram.

How does the TPA5052RSAR prevent audio artifacts when changing delay settings?

The TPA5052RSAR holds both audio channels in internal mute mode until the newly configured number of samples has fully passed through the delay buffer. This behavior-documented under "Mute-on-Delay-Change"-eliminates pops, clicks, or discontinuities during real-time delay adjustments, ensuring clean transitions.

Can the TPA5052RSAR be cascaded with another TPA5052RSAR to increase total delay?

Yes, the TPA5052RSAR supports series connection: the DATA_OUT of one device connects to the DATA input of the next. Figure 4 in the datasheet confirms this topology, enabling cumulative delay up to 2 × 170.6 ms (at 48 kHz), with each device independently configured via its own DEL[4:0] pins.

What is the purpose of the exposed thermal pad on the TPA5052RSAR QFN package?

The exposed thermal pad on the TPA5052RSAR serves dual mechanical and thermal functions: it must be soldered to a PCB thermal land to ensure reliable mechanical attachment and to dissipate heat-critical for maintaining junction temperature within the rated –40°C to +125°C range, as specified in the Absolute Maximum Ratings table.