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APA2609
Active
3W Stereo Class D Audio Power Amplifier and Class AB Headphone Driver
(DC Volume Control, UVP, AGC)
Features
- Max, Power : Internal set limit level AGC<0.27VDD
- 2.55W at VDD=5V, RL=4Ω
- 1.44W at VDD=5V, RL=8Ω SE mode
- 75mW at VDD=5V, RL=32Ω
Output Power at THD+N=10%
- 3.14W at VDD=5V, RL=4Ω
- 1.77W at VDD=5V, RL=8Ω
QFN3x3-20 (APA2609A)
General Description
The APA2609 provides DC volume control, gain range is from +20dB (VVOLUME=0V) to -80dB (VVOLUME=5V) with gain range from. It’s easy to get the suitable amplifier’s gain with the 64 steps gain setting. The filter-free architecture eliminates the output filters compared to the traditional Class-D audio amplifier, and reduces the external component counts and the components height, it could save the PCB space, system cost, simplifies the design and the power loss at filter. APA2609 provides an AGC (Non-Clip) function, which limits output swing from overstress speaker. It reduces internal gain instead of clipping peak to maintain low THD. The APA2609 also integrates the de-pop circuitry that reduces the pops and click noises during power on/off or shutdown enable process. The APA2609 has built-in over-current and thermal protection that prevent the chip being destroyed by short circuit or over temperature situation. APA2609 combines a stereo bridge-tied loads (BTL) mode for speaker drive and a stereo single-end (SE) mode for headphone drive into a single chip, where both modes are easily switched by the SE/BTL input control pin signal. APA2609 is capable of driving 3W at 5V into 4Ω speaker. The efficiency can archived 85% at RL=4Ω when PO=3W at VDD=5V. APA2609 is capable of driving 75mW at 5V into 32Ω Headphone. UVP function minimize power off induced pop noise.
(DC Volume Control, UVP, AGC)
Features
- Operating Voltage : 3.1V-5.8V
- High Efficiency 85% at PO=3W, 4Ω Speaker, VDD=5V
- Filter-free Class D Amplifier
- Low Shutdown Current
- 64 Steps Volume Adjustable from -80dB to +20dB by DC Voltage with Hysteresis
- AGC (Non-Clip) Function
- Max, Power : Internal set limit level AGC<0.27VDD
- Under Voltage Protection Function
- Output Power at THD+N=1%
- 2.55W at VDD=5V, RL=4Ω
- 1.44W at VDD=5V, RL=8Ω SE mode
- 75mW at VDD=5V, RL=32Ω
Output Power at THD+N=10%
- 3.14W at VDD=5V, RL=4Ω
- 1.77W at VDD=5V, RL=8Ω
- Less External Components Required
- Two Output Modes Allowable with BTL and SE Modes Selected by SE/BTL pin
- Input signal and Headphone Output Signal in phase
- Thermal and Over-Current Protections with Auto-Recovery
- Power Enhanced Packages
QFN3x3-20 (APA2609A)
- Lead Free and Green Device Available (RoHS Compliant)
General Description
The APA2609 provides DC volume control, gain range is from +20dB (VVOLUME=0V) to -80dB (VVOLUME=5V) with gain range from. It’s easy to get the suitable amplifier’s gain with the 64 steps gain setting. The filter-free architecture eliminates the output filters compared to the traditional Class-D audio amplifier, and reduces the external component counts and the components height, it could save the PCB space, system cost, simplifies the design and the power loss at filter. APA2609 provides an AGC (Non-Clip) function, which limits output swing from overstress speaker. It reduces internal gain instead of clipping peak to maintain low THD. The APA2609 also integrates the de-pop circuitry that reduces the pops and click noises during power on/off or shutdown enable process. The APA2609 has built-in over-current and thermal protection that prevent the chip being destroyed by short circuit or over temperature situation. APA2609 combines a stereo bridge-tied loads (BTL) mode for speaker drive and a stereo single-end (SE) mode for headphone drive into a single chip, where both modes are easily switched by the SE/BTL input control pin signal. APA2609 is capable of driving 3W at 5V into 4Ω speaker. The efficiency can archived 85% at RL=4Ω when PO=3W at VDD=5V. APA2609 is capable of driving 75mW at 5V into 32Ω Headphone. UVP function minimize power off induced pop noise.
