Texas Instruments TPA152EVM

Overview

TPA152EVM from Texas Instruments is an evaluation module built around the TPA152 75-mW stereo audio power amplifier IC, designed for rapid prototyping of headphone and line-level audio output stages. It operates from 4.5 V to 5.5 V, delivers ≤0.01% THD+N into 10-kΩ loads across 20 Hz–20 kHz, supports shutdown/mute control via SD pin, and is optimized for portable computing, personal audio, and embedded consumer devices.

For engineers reviewing the TPA152EVM datasheet, TPA152EVM pinout, TPA152EVM application, or TPA152EVM equivalent, this page provides verified functional context, platform integration guidance, stand-alone wiring requirements, gain configuration options, and thermal/safety considerations specific to the TPA152EVM board - not the underlying IC.

Technical Context

The TPA152EVM implements the TPA152 IC in a fixed-gain (×1 inverting) configuration with onboard 20-kΩ feedback resistors (R2/R4), 1-µF input coupling capacitors (C1/C3), and 10-µF output coupling capacitors (C7). It features a single-in-line header interface (0.1" pitch) for plug-and-play use with the TI Plug-N-Play Audio Amplifier Evaluation Platform (SLOU011), enabling automatic signal routing, power delivery, and mute control via platform jumpers (JP7) and switches (S3).

As a stand-alone board, the TPA152EVM requires external 5-V regulated supply connected to VDD/GND pins, audio source applied to IN1/IN2/GND, shutdown control via SD pin (VDD = mute, GND = active), and AC-coupled 32-Ω headphone or line outputs using ≥33-µF output capacitors. It includes internal pop-reduction circuitry and relies on the TPA152 IC's integrated thermal/short-circuit protection.

Key Specifications

Availability

TPA152EVM is available at Aetrix Electronics and suitable for audio subsystem validation, embedded headphone amplifier qualification, and mixed-signal reference design development requiring stable component supply and documented TI evaluation hardware.

Supply support for TPA152EVM 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 (TI) is a U.S.-based semiconductor company specializing in analog, embedded processing, and digital signal technologies, with decades of leadership in audio power solutions.

The TPA152EVM belongs to TI's Mixed-Signal Products evaluation platform family, developed to accelerate audio amplifier design verification and reduce time-to-demonstration for portable and low-power audio applications.

FAQ

What is the TPA152EVM and how does it differ from the TPA152 IC?

The TPA152EVM is a printed circuit board evaluation module that integrates the TPA152 75-mW stereo audio power amplifier IC along with supporting components (resistors, capacitors, shutdown switch) and a 0.1"-pitch header interface. Unlike the bare TPA152 IC, the TPA152EVM provides immediate plug-and-play functionality with TI's Plug-N-Play platform, preconfigured gain, and verified layout for low-noise headphone driving - enabling rapid system-level testing without custom PCB design.

Can the TPA152EVM be used without the TI Plug-N-Play platform?

Yes, the TPA152EVM can operate stand-alone: connect a regulated 5-V supply to its VDD and GND pins, apply audio signals to IN1/IN2/GND, tie the SD pin to VDD to mute or GND to enable, and route VO1/VO2 through ≥33-µF AC-coupling capacitors to 32-Ω headphones or line outputs. The board's bottom-side header pins allow wire-wrap, socket, or soldered connections - no platform required for basic amplifier validation.

What are the power supply requirements for reliable TPA152EVM operation?

The TPA152EVM requires a clean, regulated DC supply between 4.5 V and 5.5 V, capable of delivering up to 80 mA. Polarity must be strictly observed - reverse or overvoltage (>5.5 V) will open onboard fuses and damage the board. When used with the Plug-N-Play platform, power may be sourced from an on-board 9-V battery + regulator, external 5–15 V VCC input, or direct VDD input; standalone use mandates external regulation.

How is gain adjusted on the TPA152EVM, and what are the trade-offs?

Gain on the TPA152EVM is set by feedback resistors R2 and R4 (20 kΩ default), yielding ×1 inverting gain. To increase gain up to ~×10, replace R2/R4 with higher values using Gain = –RF/RI. However, higher gain degrades THD+N and SNR, and requires adding a small compensation capacitor (per TPA152 datasheet SLOS210) to maintain stability - so ×1 is recommended unless signal level constraints demand amplification.

Does the TPA152EVM include protection features, and how are they implemented?

Yes - the TPA152EVM leverages the TPA152 IC's built-in thermal shutdown and short-circuit protection, which activate automatically under overload or overtemperature conditions. Additionally, the board includes pop-reduction circuitry to minimize turn-on/turn-off transients, and the Plug-N-Play platform adds overvoltage/reverse-polarity protection on power inputs. No external protection components are needed for standard operation.