The TPA122 MSOP Audio Power Amplifier Evaluation Module

3.2 The TPA122 MSOP Audio Power Amplifier Evaluation Module

The TPA122 MSOP Audio Power Amplifier Evaluation Module is powered by a TPA122 150-mW Stereo Audio Amplifier IC. It includes a shutdown control signal input with onboard switch and can drive either line-level outputs, 32-Ωheadphones, or 8-Ωspeakers.

The evaluation module can be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform (Figure 3±1) or wired directly into circuits or equipment. The module has single in-line header connector pins mounted to the under side of the board. These pins allow the module to be plugged into the TI platform, which automatically makes all the signal input and output, power, and control connections to the module.

The module connection pins are on 0.1-inch centers to allow easy use with standard perf board and plug board-based prototyping systems. Or, the EVM can be wired directly into existing circuits and equipment when used stand-alone.

The module appears in Figure 3±2 and its schematic is shown in Figure 3±3.

Figure 3±2. TPA122 MSOP EVM

Shutdown

VDD

GND

 

 

 

S1

+

 

 

R1

C5

 

IN1

R2

 

GND

C1

R3

 

 

 

 

 

 

 

Vo1

 

C2

U1²

GND

TEXAS

 

 

INSTRUMENTS

 

C4

 

C3

R5

 

 

R4

GND

 

 

 

IN2

SLOP127

Vo2

GND

 

TPA122 MSOP EVM

 

²Due to the very small size of the MSOP IC package, the standard part number TPA122 is replaced with the code TIAAE

Figure 3±3. TPA122 MSOP EVM Schematic Diagram

Shutdown

(VDD to

Shutdown)

Audio Input 1

Audio Input 2

 

R1

 

 

 

 

 

 

 

Vo1

 

 

 

 

8

 

 

 

 

NO

20 kΩ

1

Vo1

VDD

 

 

 

VDD

S1

 

 

 

 

 

 

 

 

C5

+

C4

2.5 to 5.5 V

 

 

 

 

 

 

R3

 

 

 

 

VDD

 

 

TPA122

10

μ

F

1 μF

 

80 kΩ

 

 

 

 

 

 

2

 

MSOP

 

 

 

 

GND

 

 

IN 1

7

 

 

 

 

 

 

Vo2

 

 

 

 

 

 

R2

 

 

 

 

 

 

 

C1

3

 

 

 

 

 

 

 

20 kΩ

 

 

 

 

 

 

 

1 μF

Bypass

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C2

 

 

IN 2

6

 

 

 

Vo2

 

 

 

 

 

 

 

 

1 μF

 

 

 

 

 

 

 

 

 

 

 

 

R5

 

 

 

 

4

 

 

5

 

 

 

C3

 

GND

Shutdown

 

80 kΩ

 

R4

 

 

 

 

1 μF

 

 

 

 

 

 

 

 

20 kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Details

3-3

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Image 17
Texas Instruments SLOU025 manual TPA122 Msop Audio Power Amplifier Evaluation Module, ±2. TPA122 Msop EVM

SLOU025 specifications

Texas Instruments (TI) is renowned for its extensive portfolio of analog and mixed-signal integrated circuits, with the SLOU025 document detailing a very specific product that focuses on precision applications in various electronics. This document, often referred to in the industry, serves as a comprehensive resource for engineers and designers looking to understand the capabilities of TI's offerings.

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Furthermore, SLOU025 illustrates the commitment of Texas Instruments to continuous innovation. The company invests heavily in research and development to stay at the forefront of technology advancements, which is reflected in the superior performance metrics of its devices.

In summary, Texas Instruments SLOU025 functions as an essential guide for stakeholders involved in electronics design and implementation. It underscores the features of high precision, advanced data conversion technologies, power efficiency, versatility, and a commitment to innovation that collectively enhance TI’s offerings in the market. The detailed insights provided in this document empower engineers to make informed decisions that ultimately lead to the creation of superior electronic solutions.