Description

1.2 Description

The TPA112 MSOP audio power amplifier evaluation module is a complete, low-power stereo audio power amplifier for high-fidelity line-level output, headphone, and small speaker applications. It consists of the TI TPA112 150-mW stereo audio power amplifier IC in a very small MSOP package, along with a small number of other parts mounted on a circuit board that is approximately one and a quarter inches square (Figure 1–1).

Figure 1–1. The TI TPA112 Audio Amplifier Evaluation Module

TEXAS

Vdd

GND

INSTRUMENTS

+

 

IN1– IN1+

R5

R6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C5

 

 

 

 

C4

R7

C1

 

 

 

 

 

R8

R1

 

 

 

 

 

 

 

Vo1

 

 

 

 

 

 

 

 

 

 

 

 

R2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

R3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C2

 

 

 

 

 

 

 

C6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U2

C3

IN2–

JP1

C7 R9 R10 GND Vo2

IN2+

SLOP126

TPA112 MSOP EVM

† Due to the very small size of the MSOP IC package, the standard part number TPA112 is replaced with the code TIAAD

Single in-line header pins are mounted to the underside of the module circuit board to allow the EVM to either be plugged into the TI plug-n-play audio amplifier evaluation platform, or to be wired directly into existing circuits and equipment when used stand-alone.

The platform has room for a single TPA112 evaluation module. It is a convenient vehicle for demonstrating TI’s audio power amplifier and related evaluation modules. The EVMs simply plug into the platform, which automatically provides power to the modules, interconnects them correctly, and connects them to a versatile array of standard audio input and output jacks and connectors. Easy-to-use configuration controls allow the platform and EVMs to quickly model many possible end-equipment configurations.

There is nothing to build, nothing to solder, and nothing but the speakers included with the platform to hook up.

1.3 TPA112 MSOP EVM Specifications

Supply voltage range, VDD

. . . . . 2.5 V to 5.5 V

Supply current, IDD

. . . . . 160 mA, max

Continuous output power, PO: 8 Ω , VDD =5 V

. . . . . . . . . . 150 mW

Audio input voltage, VI

VDD + 0.3 Vpp, max

Minimum load impedance, RL

. . . . . . . . . . . . . . 8 Ω

Introduction 1-3

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Texas Instruments SLOU023A manual Description, TPA112 Msop EVM Specifications
Page 8 Page 10

SLOU023A specifications

Texas Instruments SLOU023A is a technical document outlining the features and specifications of the LMH6629, a high-speed, low-noise operational amplifier designed for various analog applications. This op amp is particularly well-suited for precision signal processing, making it a popular choice in industries such as telecommunications, industrial automation, and medical electronics.

One of the main features of the LMH6629 is its high bandwidth. With a gain bandwidth product of 1.5 GHz, it supports a wide range of frequencies, enabling it to process fast-changing signals without significant distortion. This characteristic is critical in applications that require accurate signal amplification and processing, such as RF and video signal conditioning.

In addition to its high bandwidth, the LMH6629 boasts a low noise figure. The device is designed to minimize noise contribution, ensuring high fidelity in signal processing applications. This low noise performance makes it an excellent choice for use in audio processing, medical instruments where signal fidelity is crucial, and sensor applications where precise measurements are required.

Another notable technology utilized in the LMH6629 is its ability to operate at low supply voltages while maintaining high performance. This feature enhances the amplifier's versatility in battery-powered applications, where power efficiency is key. The op amp can operate with supply voltages as low as ±2.5V, making it suitable for modern low-voltage designs.

Furthermore, the LMH6629 provides excellent power supply rejection and common-mode rejection, which are essential for maintaining signal integrity in noisy environments. These characteristics help reduce the impact of power supply variations and external interferences, ensuring reliable operation in diverse application settings.

The package options for the LMH6629 also contribute to its usability. It comes in various forms including surface-mount packages, allowing for easy integration onto PCBs while optimizing space in compact designs.

In summary, Texas Instruments SLOU023A details the impressive features of the LMH6629 operational amplifier, highlighting its high bandwidth, low noise performance, power efficiency, and versatility in various industrial applications. This amplifier stands out as a reliable component for engineers seeking high-performance solutions in analog signal processing.
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