5.4W Dual Audio Power Amplifier

General Description:

The BA5415A and BA5416 are dual power amplifier ICs that operate off a 9V to 15V supply. When driving a 4Ω load off a 9V supply, the BA5415A does not require a heatsink. The BA5416 uses a lost-cost package. The basic characteristics (total harmonic distortion etc.) of the amplifiers are excellent, and both ICs include a standby switch function.

Features

• High output.
• POUT = 5.4W (VCC = 12V, RL = 3Ω and THD = 10%)
• POUT = 2.5W (VCC = 9V, RL = 4Ω and THD = 10%)
• Excellent audio quality.
• THD = 0.1% (f = 1kHz, PO = 0.5W)
• VNO = 0.3mVrms (Rg = 10kΩ)
• RR = 60dB (fRR = 100Hz)
• Wide operating power supply voltage range.
• VCC = 5.0V to 18.0V (BA5416 : 5.0V to 15.0V)
• Switching noise (ìpopî noise) generated when the power is switched on and off is small.
• Ripple mixing when motor starts has been prevented.
• Built-in thermal shutout.
• Built-in standby switch.
• Output is not influenced by the standby pin voltage.
• Mute time does not depend on VCC.
• Soft clipping.
• Heatsink not required  (for BA5415A, with VCC = 9V and RL ≥ 4Ω).

Circuit Diagram:

5.4W Dual Audio Power Amplifier

Datasheet for BA5415A: Download

1W Per Channel Stereo Class-D Audio Power Amplifier

Features

• 1 watt per channel with 8-ohm load
• Max. efficiency » 80% with 8-ohm load at 5 volts
• Filterless
• Digital gain control
• Build-in depop circuitry
• Error protection for short circuit and over-temperature
• Mute (shutdown) current < 1µA typical
• Low operating current (4mA at 5 volts without load)
• TSSOP 24L package available 

General Description

The AP130 is an oversampling class-D power amplifier for  stereo audio applications. It provides high power-efficiency for filterless 8-ohm load. Build-in depop, mute and gain control features simplify the applications. BTL (Bridge-Tied-Load) configuration delivers up to 1 watt into 8-ohm load per channel at 5-V supply voltage. It allows direct coupling of the power signal. Reliability is

improved through over-temperature and short circuit protections. The class-D power amplifier enables high efficiency applications for portable devices.

Circuit Diagram

1W Per Channel Stereo Class-D Audio Power Amplifier

70W x 1ch BTL Power Amplifier

Circuit diagram for AN17850A:

70W x 1ch BTL Power Amplifier

Audio power amplifier IC

Dual 6.5 power audio amplifier.

Audio power amplifier IC

Audio signal processing 1 W × 2-channel

Overview:

AN12942B is an one-chip IC for the stereo speakers which can output 1 W by 8 Ω, headphone amplifiers, line amplifiers, and electronic volumes. The AGC circuit is built-in to prevent the resonance or the vibration by the speaker’s energy and the clipping distortion what is  called "broken up sound".  Also the AN12942B is built-in power saving on/off function automatically detecting input signal to save the power of speaker  amplifier.

Circuit Diagram:

Audio signal processing

Audio power IC for mp3 Player

Overview:

The AN12941A is an amplifier IC for stereo  speakers which can output 1 W by 8 Ω or 2 W by 4 Ω. The AGC circuit is built-in to prevent the resonance  or the vibration by the speaker's energy and the  clipping distortion what is called "broken up sound."  of the speakers. Also, to reduce power consumption, AN12941A  has a built-in function which automatically detects the  input signal and can automatically enter power save  mode when there is no signal.

Features:

• Speaker amplifier is
• 1 W × 2-channel: 8 Ω, VCC = 5 V or
• 2 W × 2-channel: 4 Ω, VCC = 5 V
• Built-in AGC circuit
•  Prevention of the resonance or the vibration by 
• the speaker's energy and the clipping distortion 
• of the speaker by AGC at excessive input signal 
• (with AGC on/off switch).
• Built-in automatic power saving function
•  It detects input signals and switches on/off (with 
• the on/off switch for the automatic power saving).
• Operating supply voltage: VCC 3.0 V to 5.5 V/ 
• VCC_SP 3.0 V to 5.5 V

Circuit Diagram:

Audio power IC for mp3 Player

Auto Radio Amplifier Circuit

„ Features

• Dual 10 W audio power amplifier
• Built-in muting circuit
• Incorporating protection circuit
• Low frequency amplifier
• SIL-12 pin plastic package (Power-type with fin)

Circuit Diagram:

Auto Radio Amplifier Circuit