| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Texas Instruments |
BOARD EVALUATION LM4809M |
1 |
|
|
Texas Instruments |
DEVELOPMENT AMPLIFIER |
2 |
|
|
Texas Instruments |
MODULE EVAL FOR LM4674 |
2 |
|
|
Maxim Integrated |
EVAL MAX98360D CLASS D |
220 |
|
|
Analog Devices, Inc. |
BOARD EVAL FOR SSM2518 |
4 |
|
|
Texas Instruments |
BOARD EVALUATION LM4890M |
1 |
|
|
Maxim Integrated |
KIT EVAL FOR MAX98303 |
9 |
|
|
Maxim Integrated |
EVAL KIT MAX4063 (DIFFERENTIAL M |
9 |
|
|
Maxim Integrated |
EVAL KIT MAX98309 |
7 |
|
|
Texas Instruments |
BOARD EVALUATION LM4906LD |
1 |
|
|
STMicroelectronics |
ABD AUDIO & POWER |
0 |
|
|
Cirrus Logic |
EVAL BD - BASE BRD WM9082/8533 |
0 |
|
|
Maxim Integrated |
EVAL MAX98360C CLASS D |
19 |
|
|
Maxim Integrated |
EVAL SYST AUDIO AMP CLASS D WLP |
20 |
|
|
Sanyo Semiconductor/ON Semiconductor |
BOARD EVAL NCP2892B |
0 |
|
|
Texas Instruments |
EVAL MODULE FOR DRV602 |
3 |
|
|
STMicroelectronics |
ABD AUDIO & POWER |
0 |
|
|
Texas Instruments |
35-W, INDUCTOR-LESS, DIGITAL INP |
4 |
|
|
Nuvoton Technology Corporation America |
EVAL BRD FOR CLASS D NAU8224 & I |
0 |
|
|
Maxim Integrated |
EVAL KIT MAX9710 (3W MONO/STEREO |
4 |
|
Evaluation boards for audio amplifiers are specialized hardware platforms designed to test, validate, and develop audio amplifier circuits. These boards provide engineers with a controlled environment to measure performance metrics such as output power, efficiency, and signal fidelity. They play a critical role in modern audio system design by accelerating prototyping, reducing development risks, and ensuring compliance with industry standards. Applications span consumer electronics, automotive audio systems, and professional sound equipment.
| Type | Functional Features | Application Examples |
|---|---|---|
| Stereo Amplifier Boards | Dual-channel output, low THD+N, adjustable gain | Home theater systems, portable speakers |
| D-Class Amplifier Boards | High efficiency (>90%), PWM modulation, thermal protection | Car audio systems, battery-powered devices |
| Headphone Amplifier Boards | Low noise floor, impedance matching, volume control | Smartphones, studio headphones |
| Digital Audio Amplifier Boards | Integrated DSP, I2S interface, EQ customization | Smart speakers, IoT audio devices |
Typical evaluation boards consist of: - PCB Substrate: Multi-layer FR4 material with impedance-controlled traces - Amplifier IC: Mounted in standard packages (e.g., TSSOP, QFN) - Power Management: DC/DC converters and LDOs for voltage regulation - Connectors: RCA, XLR, or 3.5mm jacks for input/output - Test Points: Probes for measuring voltage, current, and signal integrity - Microcontroller Interface: I2C/SPI ports for configuration and debugging
| Parameter | Description | Importance |
|---|---|---|
| Output Power (W) | Continuous RMS power delivery | Determines speaker compatibility |
| Efficiency (%) | Power conversion ratio | Impacts thermal design and battery life |
| THD+N (%) | Total harmonic distortion + noise | Measures audio fidelity |
| Frequency Response (Hz) | Operational bandwidth (20Hz-20kHz typical) | Defines audible range coverage |
| PSRR (dB) | Power supply rejection ratio | Indicates noise immunity |
| Manufacturer | Key Product | Features |
|---|---|---|
| Texas Instruments | PCM5122EVM | DAC + headphone amplifier, 120dB SNR |
| STMicroelectronics | STEVAL-CCA026V1 | Digital input, 2x15W stereo output |
| Analog Devices | AD2428W-EVALZ | Automotive-grade, 4-channel amplifier |
| Maxim Integrated | MAX98357AEVKIT | Class D, 15W mono with H-bridge output |
Future developments include: - Integration of AI for dynamic EQ optimization - GaN transistors enabling higher switching frequencies - Wireless evaluation capabilities (Bluetooth 5.3, LE Audio) - Enhanced diagnostics for predictive maintenance - Miniaturization through 3D packaging technologies