Texas Instruments TPA5052RSAT

Overview

TPA5052RSAT from Texas Instruments is a stereo digital audio lip-sync delay IC that accepts a single I²S serial input (16–24-bit), buffers and delays audio data up to 170 ms per channel at 48 kHz sampling rate, and outputs delayed serial data on a single DATA_OUT line. It operates from 3.3 V with 5 V–tolerant I/O, supports bit clock rates from 32×fs to 64×fs (fs = 32–192 kHz), and requires no external crystal.

For engineers reviewing the TPA5052RSAT datasheet, TPA5052RSAT pinout, TPA5052RSAT application, or TPA5052RSAT equivalent, key selection criteria include programmable delay resolution (256-sample steps), fixed 5-bit DELx control interface, QFN-16 thermal-pad package, I²S timing compliance, and mute-on-delay-change behavior to suppress audio artifacts.

Technical Context

The TPA5052RSAT implements a synchronous serial audio interface with dedicated LRCLK (word clock), BCLK (bit clock), and DATA inputs, all sampled on BCLK rising edges. Delay is set via five logic-level DELx pins (DEL4–DEL0), where delay in samples = 4096×DEL4 + 2048×DEL3 + 1024×DEL2 + 512×DEL1 + 256×DEL0 + 255 - enabling 255 to 8191 sample delay range.

All internal clocks are derived from the incoming audio clock (BCLK/LRCLK); no PLL or external oscillator is used. The device clears delay memory on power-up or after delay changes to prevent erroneous output, and mutes both channels during delay reconfiguration to eliminate pops and clicks.

Key Specifications

Pinout & Package

TPA5052RSAT uses a 4 mm × 4 mm, 16-pin QFN (RSA) package with exposed thermal pad. All GND pins (5–9) must be connected to system ground; VDD pins (13, 14) require local 0.1 µF decoupling; thermal pad must be soldered to PCB for thermal and mechanical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TAS3103A and TPA5051RSAT, the TPA5052RSAT provides dedicated, low-complexity stereo delay with zero-config hardware interface-ideal for cost-sensitive, fixed-delay consumer audio systems where simplicity and reliability outweigh programmability needs.

Availability

TPA5052RSAT is available at Aetrix Electronics and suitable for high-definition television, flat-panel display, and home theater audio systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TPA5052RSAT 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets.

The TPA5052RSAT belongs to TI's audio signal chain portfolio, specifically designed for real-time digital audio synchronization in video-centric consumer electronics where deterministic, low-latency lip-sync correction is critical.

FAQ

What is the maximum delay time supported by the TPA5052RSAT at 48 kHz sampling rate?

The TPA5052RSAT supports a maximum delay of 8191 samples, which equals approximately 170.6 ms per channel at fs = 48 kHz. This is achieved when all five DELx pins (DEL4–DEL0) are set to logic high. The minimum delay is 255 samples (≈5.3 ms). Delay is calculated as Audio Delay (samples) = 4096×DEL4 + 2048×DEL3 + 1024×DEL2 + 512×DEL1 + 256×DEL0 + 255. The TPA5052RSAT applies identical delay to both left and right channels.

Does the TPA5052RSAT require an external crystal or oscillator to operate?

No, the TPA5052RSAT does not require an external crystal or oscillator. All internal timing-including delay memory clocking and data buffering-is derived directly from the incoming audio clock signals (BCLK and LRCLK). This eliminates the need for additional timing components, reduces BOM count, and improves system reliability. The TPA5052RSAT supports BCLK frequencies from 1.024 MHz to 12.288 MHz corresponding to fs = 32–192 kHz with 32×, 48×, or 64× oversampling.

How is delay configured on the TPA5052RSAT, and what is the resolution?

Delay on the TPA5052RSAT is configured using five dedicated logic-input pins: DEL4 (MSB) through DEL0 (LSB). Each pin accepts 3.3 V–compatible logic levels and is 5 V tolerant. The delay resolution is fixed at 256 samples, meaning each increment in the 5-bit code adds 256 samples to the base delay of 255. For example, DEL[4:0] = 00001 yields 511 samples (255 + 256), while 00010 yields 767 samples. The TPA5052RSAT does not support fractional-sample or dynamically adjustable delay.

Can multiple TPA5052RSAT devices be cascaded to increase total delay beyond 170 ms?

Yes, multiple TPA5052RSAT devices can be connected in series to extend total delay. The DATA_OUT of the first device connects to the DATA input of the second, with shared BCLK and LRCLK signals. Each device contributes its own configured delay, allowing cumulative delay up to N × 170 ms (N = number of devices). This topology preserves I²S format integrity and requires no additional control logic. However, each added device increases propagation delay and supply current, and all devices must use identical fs and BCLK rates.

What package type and thermal requirements apply to the TPA5052RSAT?

The TPA5052RSAT uses a 4 mm × 4 mm, 16-pin QFN package (RSA) with exposed thermal pad. The thermal pad must be soldered to a PCB copper land for effective heat dissipation and mechanical stability. TI specifies a maximum power dissipation of 1 W at TA = 85°C, requiring proper thermal design per SLUA271 guidelines. The package is RoHS-compliant, moisture-sensitivity level 2 (260°C peak reflow), and rated for –40°C to +85°C operation. The TPA5052RSAT ordering variant RSAT denotes 250-unit small tape-and-reel packaging.