Key facts
- Brand
- Maxim
- Model
- MAX978
- Category
- Other Electronics
- Documents
- 3
- Languages
- EN
- Last added
- 2012-05-07
Start here
Maxim MAX9789/MAX9790 Stereo Class AB Speaker Amplifier and DirectDrive Headphone Amplifier Datasheet
The MAX9789/MAX9790 devices combine a 2 W Class‑AB stereo speaker amplifier with a 100 mW DirectDrive® headphone amplifier in a single 32‑pin thin QFN package. They are designed for Microsoft Windows Vista‑compliant systems and operate from a single 4.5 V to 5.5 V supply. Integrated features include a low‑dropout regulator, click‑and‑pop suppression, and independent shutdown control for speaker and headphone sections.
The datasheet provides absolute maximum ratings, detailed electrical characteristics, typical operating curves, pin configurations, and package information. Key performance figures such as +90 dB PSRR, 0.002 % THD+N, and up to 2 W speaker output into 4 Ω are documented, along with LDO output voltage settings and power‑dissipation data.
Maxim MAX978 specifications
| Speaker Output Power | 2 W into 4 Ω |
|---|---|
| Power‑Supply Rejection Ratio (PSRR) | +90 dB |
| Integrated LDO Output Voltage | 4.75 V (adjustable 1.21 V–4.75 V) |
All Maxim MAX978 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How much speaker output power can the MAX9789 provide?
It can deliver up to 2 W into a 4 Ω load.
What is the maximum output voltage swing?
It can deliver a 14 V P‑P voltage swing.
How much current can the MAX9788 source at peak?
The charge‑pump can supply greater than 700 mA of peak output current.
What is the propagation delay of the MAX976/MAX978/MAX998 comparators?
The propagation delay is specified as 20 ns.
How much current does each comparator draw in normal operation?
Each comparator consumes about 225 nA of supply current.