Key facts
- Brand
- Maxim
- Model
- MAX98400A
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-07
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Maxim MAX98400A Evaluation Board User Manual
This manual describes the MAX98400A evaluation board, which configures the MAX98400A Class‑D audio amplifier to drive a pair of 8 Ω speakers at 2 × 20 W in stereo mode or a single 4 Ω speaker at 1 × 40 W in mono mode. The board operates from an 8 V‑28 V DC supply and provides gain set to +20.1 dB.
The document includes a parts list, schematic diagrams, PCB layout drawings, and detailed instructions for configuring jumpers, connecting power and audio inputs/outputs, and performing functional tests. It also explains how to enable or disable features such as the limiter, thermal fold‑back protection, and mono mode.
Maxim MAX98400A specifications
| Supply Voltage Range | 8 V to 28 V |
|---|---|
| Efficiency | up to 90 % |
| Power‑Supply Rejection Ratio (PSRR) | 67 dB |
| Thermal Foldback Activation Temperature | +120 °C |
| Package Type | MAX98400A – 36‑pin TQFN; MAX98400B – 24‑pin TQFN |
Source: Maxim MAX98400A/MAX98400B Class D Amplifier Datasheet
All Maxim MAX98400A documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What supply voltage range does the MAX98400A/B support?
Both devices operate from a single 8 V to 28 V supply.
Does the amplifier include thermal protection?
Yes, it has a thermal‑foldback feature that reduces power above +120 °C and also provides traditional thermal protection.
What supply voltage does the MAX98400A evaluation board require?
It operates from an 8 V to 28 V DC power supply.
How do you switch the board from stereo to mono mode?
Short the MONO_1 (or MONO_2) jumper to connect the left and right output pins together.