10W Mono Class D Amplifier for 2S Battery-Operated Portable Devices
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Overview
Description
The DA7202 is a powerful, highly efficient, low EMI Class D speaker driver that can drive 10W into 4Ω loads directly from a 2S Lithium-ion battery pack to power a variety of two-cell portable applications such as Ultrabooks and tablets.
DA7202 uses a fully-differential switched-mode amplifier architecture with a fixed +18dB gain and differential analog inputs. It also has a PWM modulator and an H‑bridged switched power output stage that delivers 3.8Wrms into an 8Ω load (10.2W into a 4Ω load), making a speaker sound louder in portable devices.
Benefits
- Low component count
- Small PCB area due to 9 bump WLCSP 0.5mm pitch package
- Good PSRR and THD+N
- Differential audio inputs
- Low EMI
- Short circuit and thermal overload protection with auto-recovery
Features
- Supports 4Ω and 8Ω loads
- Input supply range: 4.5V to 9.0V
- Prms: 9.0W into 4Ω load at 8.2V, 1% THD+N
- Prms: 10.2W into 4Ω load at 8.2V, 10% THD+N
- Prms: 3.8W into 8Ω load at 8.2V, 1% THD+N
- Prms: 5.0W into 8Ω load at 8.2V, 10% THD+N
- Efficiency: 85% at Pout = 7.0W at 8.2V, 4Ω
- Efficiency: 90% at Pout = 3.5W at 8.2V, 8Ω
- Ultra-low standby current: 7µA
- SNR (A-weighted) 104dB
- THD+N: 90dB
- PSRR: 78dB
- Fixed +18db gain
- Package: 9-WLCSP 0.5mm
Applications
Applications
- Ultrabooks
- Tablets
- Personal navigation devices
- Speaker accessories
- Handheld gaming
- Mobile computing
Documentation
| Document title | Document type
|
Date Date | |
|---|---|---|---|
| PDF 678 KB | Datasheet | ||
| PDF 1.08 MB | Manual - Development Tools | ||
| ZIP 693 KB | Other | ||
| PDF 479 KB | Product Brief | ||
| PDF 1.25 MB | Product Brief | ||
| PDF 30 KB | Schematic | ||
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Design & Development
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Boards & Kits
10W Mono Class D Amplifier Evaluation Kit
The DA7202 is a powerful, highly efficient, low EMI Class D speaker driver that can drive 10W into 4Ω loads directly from a 2S lithium-ion battery to power a variety of...
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Product Options
Processing table
| 9-WLCSP | Tape & Reel |
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