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MAX98500
Boosted 2.2W Class D Amplifier with Automatic Level Control
High-Efficiency Boosted Amplifier Makes Speakers Louder Without Collapsing the Battery
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Key Features
Applications/Uses
Simplified Block Diagram
Technical Docs
| Data Sheet | Boosted 2.2W Class D Amplifier with Automatic Level Control | May 17, 2010 | |
| App Note | Multiplex Boosted Class-D without Additional External Circuitry |
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 .
Key Features
- Boosted Class D Output
- Integrated Automatic Level Control
- Output Power
- 2.2W into 8Ω, 10% THD+N
- 1.7W into 8Ω, 1% THD+N
- Wide 2.5V to 5.5V Supply Voltage Range
- Undervoltage Lockout Protection
- High Total Efficiency of 87%
- High Step-Up Switching Frequency (2MHz)
- Active Emission Limiting for Low EMI
Applications/Uses
- Active Speaker Accessories
- Cell Phones
- GPS Devices
- Mobile Internet Devices
- Smartphones
Description
The MAX98500 is a high-efficiency Class D audio amplifier that features an integrated boost converter, to deliver a constant output power over a wide range of battery supply voltages.
The boost converter operates at 2MHz, requiring only a small (2.2µH) external inductor and capacitor.
The automatic level control has a battery tracking function that reduces the output swing as the supply voltage drops, preventing collapse of battery voltage.
The amplifier has differential inputs and an internal fully differential design. The MAX98500 also features three gain settings (6dB, 15.5dB, and 20dB) that are selectable with a logic input.
The MAX98500 is available in a small, 0.5mm pitch 16-bump WLP package (2.1mm x 2.1mm). It is specified over the extended -40°C to +85°C temperature range.
The boost converter operates at 2MHz, requiring only a small (2.2µH) external inductor and capacitor.
The automatic level control has a battery tracking function that reduces the output swing as the supply voltage drops, preventing collapse of battery voltage.
The amplifier has differential inputs and an internal fully differential design. The MAX98500 also features three gain settings (6dB, 15.5dB, and 20dB) that are selectable with a logic input.
The MAX98500 is available in a small, 0.5mm pitch 16-bump WLP package (2.1mm x 2.1mm). It is specified over the extended -40°C to +85°C temperature range.
Technical Docs
| Data Sheet | Boosted 2.2W Class D Amplifier with Automatic Level Control | May 17, 2010 | |
| App Note | Multiplex Boosted Class-D without Additional External Circuitry |
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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