1-W BTL audio power amplifier

Overview:

The AN7511 is an audio power amplifier IC with 1-ch output. The BTL (Balanced Transformer-Less) method can provide fewer external parts and more easy design for applications 

Features:

• 1-W output (8 Ω) with supply voltage of 5 V
• On-chip standby function
• On-chip muting function

Applications:

• Televisions, radios, and personal computers

Circuit Diagram: 

1-W BTL audio power amplifier

Pre-amp. and power amp. IC for 1.5 V headphone stereo

Overview:

The AN7504SB is a low voltage operation headphone amp. IC for headphone C-cassette stereo. It incorporates tape selector, pre-amp. , soft AGC bass-boost circuit, etc.

Features:

• Low voltage operation (0.98 V to 2.0 V)
• Tape selector switch built-in
• Low frequency boost function with soft AGC

Applications:

• Headphone stereo

Circuit Diagram: see in datasheet

0.5W to 3W BTL audio power amplifier IC

Overview:

The AN7510/7520 series is a 0.5W to 3W BTL audio power amplifier IC. Equipped with a standby function and mute or DC volume circuit, the series includes a lineup of single and dual output models. With simplified set design due to minimum external components, this IC has a wide variety of applications.

Features:

• Operating power sourcs voltage: 3.0V to 13.5V.
• Built-in standby function.
• Built-in mute or DC volume circuit.

Circuit Diagram:

 0.5W to 3W BTL audio power amplifier IC

Audio signal processing IC for 1.5 V headphone stereo

General Description:

The AN7500FHQ is a single chip IC optimum for a 1.5 V headphone stereo system including pre-amp., power amp. and Dolby B type noise reduction circuit. Current consumption in a Dolby circuit off mode has been drastically reduced and an operating supply voltage has also been lowered to 0.98 V. Much fewer external components  have been realized due to an integration of audio signal processing system into a single chip circuitry in a small outline package and space saving mounting of a set.

Circuit Diagram

Audio signal processing IC for 1.5 V headphone stereo

Dual 20 Watt audio amplifier

General Description:

The AN7190NK and the AN7190NZ are audio power ICs developed for the sound output of car audio (dual 20 W). It is incorporating various protective circuits to protect the IC from destruction by GND-open, short circuit to GND and power supply surge which are the important subject of power IC protection, so the IC will largely contribute to a high reliability design of equipment. Also, it is incorporating a perfect muting circuit which is free from shock noise, so that a shock noise design under the set transient condition can be made easily using together with its standby function. 

Circuit Diagram:

Dual 20 Watt audio amplifier

Dual BTL 20W Audio Power Amplifier

Description:
The AN7177 is a monolithic integrated circuit designed for  Dual BTL audio power amplifier suitable for Hi-Fi and car stereo. 
Features:

•  High output power (20W x 2) 
•  Incorporating stand-by circuits 
•  Low shock noise from power ON/OFF switching 
•  Fewer external components 
•  Incorporates protection circuits 
•  Highly stable operation

Circuit Diagram:

Dual BTL 20W Audio Power Amplifier 

Datasheet for AN7177: Download

NTE7059 Integrated Circuit Dual BTL 14W Audio Power Amplifier

General Description:

The NTE7059 is an integrated circuit in a 16−Lead Staggered SIP type package designed

for a 14W (13.2V, 4Ω) output power amplifier. Stereo operation is enabled due to incorporating two BTL amplifiers. High reliability is obtained due to incorporating protectors. ON/OFF is enabled even if power is supplied to the power supply pin by applying stand−by circuit.

Features:

• High Output Power: 14W x 2
•  Incorporates Protection Circuits:
• Temperature, Overvoltage, VOUT−GND Short, RL Short, VOUT−VCC Short
•  Low Shock Noise from Power ON/OFF Operation
•  Fewer External Components
•  High Stable Operation