Texas Instruments manual TPA005D12 Class-D EVM Interconnects

Page 38

TPA005D12 Class-D EVM Interconnects

3.7 TPA005D12 Class-D EVM Interconnects

Table 3±4 shows the correlation between the TPA005D12 class-D amplifier IC pins, the EVM pins, and the plug-n-play (PNP) platform sockets.

Table 3±4. TPA005D12 Class-D EVM/Plug-N-Play Platform Interconnects

 

CLASS-D EVM

PLUG-N-PLAY PLATFORM

 

 

 

 

 

IC PIN

EVM PIN

FUNCTION ON EVM

PNP SOCKET

FUNCTION ON PLATFORM

 

 

 

 

 

8, 9 16, 21, 28

VDD

Power for left channel, input, and

VDD

Power from J1, J2, J6, or B1

 

 

headphone circuits

 

 

 

 

 

 

 

40, 33

VDD2

Power for right channel circuits

VDD

Power from J1, J2, J6, or B1

 

 

 

 

 

3, 7, 12, 13, 20,

GND

Analog and power ground for EVM,

GND

Ground for platform from J1, J2,

27, 36, 37, 46,

 

all pins

 

J6, or B1

47

 

 

 

 

 

 

 

 

 

44

RIN+

Class-D right channel positive input

Right In (line)

Right channel input from J3 or J4

 

 

 

 

 

45

RIN±

Class-D right channel inverted input

GND

Ground for platform from J1, J2,

 

 

 

 

J6, or B1

 

 

 

 

 

38, 39

Rout+

Class-D right channel positive out-

Right Out +

Right channel positive output to J7

 

 

put

 

or J8

 

 

 

 

 

34,35

Rout±

Class-D right channel inverted out-

Right Out ±

Right channel negative output to

 

 

put

 

J7 or J8

 

 

 

 

 

5

LIN+

Class-D left channel positive input

Left In (line)

Left channel input from J4 or J5

 

 

 

 

 

4

LIN±

Class-D left channel inverted input

GND

Ground for platform from J1, J2,

 

 

 

 

J6, or B1

 

 

 

 

 

10, 11

Lout+

Class-D left channel positive output

Left Out +

Left channel positive output to J8

 

 

 

 

or J9

 

 

 

 

 

14, 15

Lout±

Class-D left channel inverted output

Left Out ±

Left channel negative output to J8

 

 

 

 

or J9

 

 

 

 

 

2

Mute

Mute control external input pin: ac-

N/C

No connect

 

 

tive low Ð selected amplifier active

 

 

 

 

when held > 2 V

 

 

 

 

 

 

 

1

SD

Shutdown control external input pin:

Mute

Mute control from JP6 for use

 

 

active low Ð normal operation when

 

when testing a headphone amplifi-

 

 

held > 2 V

 

er in socket U5 in conjunction with

 

 

 

 

an EVM in U2/U3/U4

 

 

 

 

 

41

TP4

Fault±1: Logic level fault±1 output

N/C

No connect

 

 

signal. MSB. Open drain.

 

 

 

 

 

 

 

42

TP3

Fault±0: Logic level fault±0 output

N/C

No connect

 

 

signal. LSB. Open drain.

 

 

3-24

Details

Image 38
Contents Users Guide Important Notice Preface Related Documentation From Texas InstrumentsPage Contents Figures TablesIntroduction Feature Highlights Description Typical TPA005D12 Class-D EVM SpecificationsMaximum Quick Start OFFPrecautions Audio PowerQuick Start List for Platform Platform PreparationsQuick Start List for Stand-Alone Details ±1. The TI Plug-N-Play Audio Amplifier Evaluation Platform TPA005D12 Class-D Audio Power Amplifier Evaluation Module TP9 GND VDD2 1 TPA005D12 Class-D Stereo Audio Amplifier IC TP3±5. Class-D Functional Diagram Overview of Class-D Audio Amplifiers±6. Class-D Input and Output Waveforms Bridge-Tied Load BTL OperationControl and Indicator Circuits Class-D Differential Inputs6 TPA005D12 Class-D EVM Test Points ±2. TPA005D12 Class-D EVM Test PointsClass-D Amplifier Design Considerations EVM Removal Installing and Removing EVM BoardsEVM Insertion 2.1 S1 Ð Shutdown Module Switches2.2 S2 Ð Mute Switch Headphone Output Jack Signal RoutingSignal Conditioning Headphone Jack Control Signals ShutdownMute/Mode Select JP6 Mute/Mode Polarity Select JP8Power Requirements JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8Outputs Inputs and OutputsInputs Monitor Output Connections Controls and IndicatorsInput Connections TPA005D12 Class-D EVM Performance Characteristics ±11. Class-D Amplifier Frequency Response at 4 Ω±12. Class-D Amplifier Distortion versus Output Power at 4 Ω ± % Crosstalk Frequency TPA005D12 Class-D EVM Interconnects TPA005D12 Class-D EVM Bill of Materials ±5. TPA005D12 Class-D EVM Bill of MaterialsTPA005D12 Class-D EVM Schematic ±18. TPA005D12 Class-D EVM Schematic Diagram±19. TPA005D12 Class-D EVM Top Assembly 10 TPA005D12 Class-D EVM PCB Layers±21. TPA005D12 Class-D EVM Top Layer ±23. TPA005D12 Class-D EVM Third Layer Details

TPA005D12 specifications

The Texas Instruments TPA005D12 is a highly regarded digital audio power amplifier that is engineered for high-performance applications. It is part of TI's TPA series, which is known for its efficient power delivery and superior sound quality. The TPA005D12 is designed to drive passive speakers while ensuring minimal power loss and efficient heat management.

One of the standout features of the TPA005D12 is its ability to provide 5 watts of continuous output power per channel into an 8-ohm load with a low total harmonic distortion (THD) rating. This makes it suitable for use in a variety of audio applications, including computer speakers, soundbars, and portable audio systems. The amplifier operates from a single supply voltage, ranging typically from 4.5V to 14V, allowing for flexible integration into different power supply environments.

The TPA005D12 adopts Class-D amplification technology, which significantly enhances power efficiency compared to traditional linear amplifiers. Class-D amplifiers convert the input audio signal into a series of pulse-width modulated signals, resulting in increased power savings and reduced heat generation. This not only improves the overall energy efficiency but also contributes to a longer operational lifespan for devices utilizing this technology.

Additionally, the TPA005D12 features an integrated thermal and short-circuit protection mechanism, which helps safeguard the amplifier from potential damage due to excessive temperatures or electrical faults. This reliability factor is crucial for manufacturers looking to create robust consumer electronics.

Another important characteristic is its integrated low-noise power supply rejection ratio (PSRR), which helps maintain sound clarity and reduces the impact of power supply noise on audio quality. The TPA005D12 also supports differential input signals, which can improve common-mode noise rejection and further enhance audio performance.

The device is offered in a compact package suitable for space-constrained applications, enabling easy integration into various designs. With a combination of low cost, high efficiency, and excellent audio performance, the Texas Instruments TPA005D12 stands out as a top choice for developers and engineers seeking reliable audio amplification solutions. Whether in home entertainment systems or personal audio devices, the TPA005D12 is designed to deliver exceptional sound quality with a minimal footprint.