Key facts
- Brand
- Maxim
- Model
- MAX977
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-07
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Maxim MAX9775/MAX9776 Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier Datasheet
The MAX9775/MAX9776 combine a high‑efficiency Class D stereo/mono audio power amplifier with a DirectDrive® receiver and headphone amplifier. They provide 1.5 W per channel into a 4 Ω load from a 5 V supply, feature spread‑spectrum modulation, active emissions limiting, 3D stereo enhancement (MAX9775), and I²C‑controlled mixer, volume and output settings.
Both devices are offered in compact packages: the MAX9775 in a 36‑bump WLP (3 mm × 3 mm) and the MAX9776 in a 32‑pin TQFN (5 mm × 5 mm) or a 36‑bump WLP. They operate over –40 °C to +85 °C and are suited for cell phones, portable multimedia players, and handheld gaming consoles.
Maxim MAX977 specifications
| Output Power per Channel | 1.5 W into 4 Ω at 5 V |
|---|---|
| Efficiency | up to 79 % |
| Operating Temperature Range | -40 °C to +85 °C |
| THD+N | 0.03 % at 1 kHz |
| Power‑Supply Rejection Ratio (PSRR) | 68 dB at 217 Hz |
| Current Limit | 1.6 A |
| Package (MAX9775) | 36‑bump WLP (3 mm × 3 mm) |
| Package (MAX9776) | 32‑pin TQFN (5 mm × 5 mm) or 36‑bump WLP |
Source: Maxim MAX9775/MAX9776 Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier Datasheet
All Maxim MAX977 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output power per channel?
The device delivers up to 1.5 W per channel into a 4 Ω load when powered from a 5 V supply.
From: Maxim MAX9775/MAX9776 Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier Datasheet
How efficient are the MAX9775/MAX9776 amplifiers?
They achieve efficiencies of up to 79 %.
From: Maxim MAX9775/MAX9776 Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier Datasheet
What is the propagation delay of the MAX975/MAX977 in high‑speed mode?
The high‑speed propagation delay is specified as 28 ns.
From: Maxim MAX975/MAX977 Single/Dual +3V/+5V Dual-Speed Comparators with Auto-Standby Datasheet
What supply current does the comparator draw in low‑power mode?
In low‑power mode the device draws only 3 µA per comparator.
From: Maxim MAX975/MAX977 Single/Dual +3V/+5V Dual-Speed Comparators with Auto-Standby Datasheet