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MAX9788
14VP-P, Class G Ceramic Speaker Driver
Class G, CeraMax Technology Drives Ceramic Speakers in the Smallest Footprint
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Key Features
Applications/Uses
Parametric specs for Speaker Amplifiers
| # Channels | 1 |
| Class | Boosted/G |
| Spkr. Amp. VCC (V) (min) | 2.7 |
| Spkr. Amp. VCC (V) (max) | 5.5 |
| Spkr. Amp. ICC (mA) (typ) | 8 |
| POUT into 8Ω @ 1% THD+N (W) (min) | 2.4 |
| POUT into 8Ω @ 10% THD+N (W) (min) | 2.8 |
| Spkr. Amp. Half Pwr. THD+N (%) | 0.07 |
| SNR (dB) (A- Weighted) | 108 |
| PSRR (dB) (min) | 77 |
| Package/Pins | TQFN/28 WLP/20 |
| Budgetary Price (See Notes) | 1.2 |
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Simplified Block Diagram
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Parameters
Parametric specs for Speaker Amplifiers
| # Channels | 1 |
| Class | Boosted/G |
| Spkr. Amp. VCC (V) (min) | 2.7 |
| Spkr. Amp. VCC (V) (max) | 5.5 |
| Spkr. Amp. ICC (mA) (typ) | 8 |
| POUT into 8Ω @ 1% THD+N (W) (min) | 2.4 |
| POUT into 8Ω @ 10% THD+N (W) (min) | 2.8 |
| Spkr. Amp. Half Pwr. THD+N (%) | 0.07 |
| SNR (dB) (A- Weighted) | 108 |
| PSRR (dB) (min) | 77 |
| Package/Pins | TQFN/28 WLP/20 |
| Budgetary Price (See Notes) | 1.2 |
Key Features
- Integrated Charge-Pump Power Supply—No Inductor Required
- 14VP-P Voltage Swing into Piezoelectric Speaker
- 2.7V to 5.5V Single-Supply Operation
- Clickless/Popless Operation
- Small Thermally Efficient Packages
- 4mm x 4mm 28-Pin TQFN
- 2mm x 2.5mm 20-Bump WLP
Applications/Uses
- Cellular Phones
- Handheld Gaming Consoles
- MP3 Players
- Notebook Computers
- Personal Media Players
- Smartphones
Description
The MAX9788 features a mono Class G power amplifier with an integrated inverting charge-pump power supply specifically designed to drive the high capacitance of a ceramic loudspeaker. The charge pump can supply greater than 700mA of peak output current at 5.5VDC, guaranteeing an output of 14VP-P.
The MAX9788 maximizes battery life by offering high-performance efficiency. Maxim's proprietary Class G output stage provides efficiency levels greater than Class AB devices without the EMI penalties commonly associated with Class D amplifiers.
The MAX9788 is ideally suited to deliver the high output-voltage swing required to drive ceramic/piezoelectric speakers.
The device utilizes fully differential inputs and outputs, comprehensive click-and-pop suppression, shutdown control, and soft-start circuitry. The MAX9788 is fully specified over the -40°C to +85°C extended temperature range and is available in small lead-free 28-pin TQFN (4mm x 4mm) or 20-bump WLP (2mm x 2.5mm) packages.
The MAX9788 maximizes battery life by offering high-performance efficiency. Maxim's proprietary Class G output stage provides efficiency levels greater than Class AB devices without the EMI penalties commonly associated with Class D amplifiers.
The MAX9788 is ideally suited to deliver the high output-voltage swing required to drive ceramic/piezoelectric speakers.
The device utilizes fully differential inputs and outputs, comprehensive click-and-pop suppression, shutdown control, and soft-start circuitry. The MAX9788 is fully specified over the -40°C to +85°C extended temperature range and is available in small lead-free 28-pin TQFN (4mm x 4mm) or 20-bump WLP (2mm x 2.5mm) packages.
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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