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MAX9737
Mono 7W Class D Amplifier
Direct-from-Battery 7W Class D Amplifier Slashes Notebook 2.1 Solution Cost
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Key Features
Applications/Uses
Parametric specs for Speaker Amplifiers
| # Channels | 1 |
| Class | D |
| Spkr. Amp. VCC (V) (min) | 8 |
| Spkr. Amp. VCC (V) (max) | 28 |
| Spkr. Amp. ICC (mA) (typ) | 15 |
| POUT into 4Ω @ 1% THD+N (W) (min) | 12 |
| POUT into 4Ω @ 10% THD+N (W) (min) | 14 |
| POUT into 8Ω @ 1% THD+N (W) (min) | 6 |
| POUT into 8Ω @ 10% THD+N (W) (min) | 7.5 |
| Spkr. Amp. Half Pwr. THD+N (%) | 0.06 |
| SNR (dB) (A- Weighted) | 97 |
| PSRR (dB) (min) | 80 |
| Package/Pins | TQFN/24 |
| Budgetary Price (See Notes) | 1.42 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Mono 7W Class D Amplifier | Nov 18, 2008 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Parametric specs for Speaker Amplifiers
| # Channels | 1 |
| Class | D |
| Spkr. Amp. VCC (V) (min) | 8 |
| Spkr. Amp. VCC (V) (max) | 28 |
| Spkr. Amp. ICC (mA) (typ) | 15 |
| POUT into 4Ω @ 1% THD+N (W) (min) | 12 |
| POUT into 4Ω @ 10% THD+N (W) (min) | 14 |
| POUT into 8Ω @ 1% THD+N (W) (min) | 6 |
| POUT into 8Ω @ 10% THD+N (W) (min) | 7.5 |
| Spkr. Amp. Half Pwr. THD+N (%) | 0.06 |
| SNR (dB) (A- Weighted) | 97 |
| PSRR (dB) (min) | 80 |
| Package/Pins | TQFN/24 |
| Budgetary Price (See Notes) | 1.42 |
Key Features
- 8V to 28V Supply Voltage Range
- Spread-Spectrum Modulation Enables Low-EMI Solution
- Passes EMI Limit with Up to 1m of Speaker Cable
- High 80dB PSRR
- Up to 88% Efficiency Eliminates Heatsink
- Thermal and Output Current Protection
- < 1µA Shutdown Mode
- Click-and-Pop Suppression
- < 10ms Turn-On Time
- Space-Saving, 4mm x 4mm x 0.8mm, 24-Pin TQFN Package
Applications/Uses
- 2.1 Notebook PCs
- LCD/PDP/CRT Monitors
- MP3 Docking Stations
- PC Surround Speakers
Description
The MAX9737 mono 7W Class D amplifier provides a high-performance, thermally efficient amplifier solution that offers up to 88% efficiency at a 12V supply. The device operates from 8V to 28V and provides a high 80dB PSRR, eliminating the need for a regulated power supply.
Filterless modulation allows the MAX9737 to pass CE EMI limits with 1m cables using only a low-cost ferrite bead and small-value capacitor on each output.
Comprehensive click-and-pop suppression circuitry reduces noise on power-up/down or into and out of shutdown or mute.
An input op amp allows the user to create a lowpass or highpass filter, and select an optimal gain. The internal precharge circuit ensures clickless/popless turn-on within 10ms.
The MAX9737 is available in the 24-pin, TQFN-EP package and is specified over the -40°C to +85°C temperature range.
Filterless modulation allows the MAX9737 to pass CE EMI limits with 1m cables using only a low-cost ferrite bead and small-value capacitor on each output.
Comprehensive click-and-pop suppression circuitry reduces noise on power-up/down or into and out of shutdown or mute.
An input op amp allows the user to create a lowpass or highpass filter, and select an optimal gain. The internal precharge circuit ensures clickless/popless turn-on within 10ms.
The MAX9737 is available in the 24-pin, TQFN-EP package and is specified over the -40°C to +85°C temperature range.
Technical Docs
| Data Sheet | Mono 7W Class D Amplifier | Nov 18, 2008 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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