Circuit Diagram:
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| 60W Hi-Fi Power Amplifier Circuit |
9/02/2014
General Overview:
The AN5279 is a monolithic integrated circuit designed for 5.0 W (19 V, 8 Ω) output audio power amplifier. It is a mono channel SEPP IC suitable for TV application.
Features:
• Few external components :
• No Boucherot cells(output C, R)
• No Bootstrap Capacitors
• No Negative Feeback Capacitors
• Built-in muting circuit
• Built-in stand-by circuit
• Built-in various protection circuits
(Load-short, thermal, over-voltage and current)
• High ripple rejection(55 dB)
• Operating voltage range 10 V to 24 V(19 V typ.)
Circuit Diagram:
The AN5279 is a monolithic integrated circuit designed for 5.0 W (19 V, 8 Ω) output audio power amplifier. It is a mono channel SEPP IC suitable for TV application.
Features:
• Few external components :
• No Boucherot cells(output C, R)
• No Bootstrap Capacitors
• No Negative Feeback Capacitors
• Built-in muting circuit
• Built-in stand-by circuit
• Built-in various protection circuits
(Load-short, thermal, over-voltage and current)
• High ripple rejection(55 dB)
• Operating voltage range 10 V to 24 V(19 V typ.)
Circuit Diagram:
 |
| Circuit diagram for 5W Mono channel SEPP audio power amplifier IC |
Overview
The AN5277 is a monolithic integrated circuit designed for 10.0 W (26 V, 8 Ω)output audio power amplifier. It is a dual channel SEPP IC suitable for stereo operation in TV application.
Features
The AN5277 is a monolithic integrated circuit designed for 10.0 W (26 V, 8 Ω)output audio power amplifier. It is a dual channel SEPP IC suitable for stereo operation in TV application.
Features
- Few external components :
- No Boucherot cells(output C, R)
- No Bootstrap Capacitors
- No Negative Feedback Capacitors
- Built-in muting circuit
- Built-in standby circuit
- Built-in various protection circuits (Load-short, thermal, over-voltage and current)
- High ripple rejection(55 dB)
- Compatible with AN5275, AN5276
- Operating voltage range 10 ∼ 32 V(26 V typ.)
Circuit Diagram:
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| Circuit Diagram for 10W Dual Channel SEPP Power Amplifier |
- Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
- Supply Voltage, V9−2 . . . . . . . . . . . . . . . . . . . . . . . . . 18V
- Supply Current, Itot . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2A
- Power Dissipation, PT . . . .. . . . . . . . . . . . . . . . . . . . . 4.5W
- Operating Ambient Temperature, Topr . . . . . . . . . . . . −20° to +70°C
- Storage Temperature, Tstg . . . . . . . . . . . . . . . . . . . . −55° to +150°C
- Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . 13V
- Output Power (RL = 4Ω), PO . . . . . . . . . . . . . . . . . . 4.4W
- Voltage Gain, GV . . . . . . . . . . . . . . . . . . . . . . . . . . . 45dB
Pin Connection:
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| Circuit Diagram 4.4 Watts Audio Power Amp |
GENERAL DESCRIPTION:
The AD199x is a two channel Bridge Tied Load (BTL) switching audio power amplifier with integrated ∑∆ modulator. The modulator accepts a 1Vrms input signal (maximum power) and generates a switching waveform to drive speakers directly. One of the two modulators can control both output stages providing twice the current for single-channel applications. A digital, microcontroller-compatible interface provides control of reset, mute and PGA gain as well as output signals for thermal and over-current error conditions. The output stage can operate from supply voltages ranging from 8V to 20V. The analog modulator and digital logic operate from a 5V supply.
- AD1990: 5Wx2 (10Wx1)
- AD1992: 10Wx2 (20Wx1)
- AD1994: 25Wx2 (50Wx1)
- AD1996: 40Wx2 (80Wx1)
FEATURES:
- Integrated Stereo Modulator & Power Stage
- 0.005% THD+N
- 101.5dB Dynamic Range
- PSRR > 65 dB
- RDS-ON < 0.3 Ω (per transistor)
- Efficiency > 80% @ 5W/6 Ω
- EMI Optimized Modulator
- On-Off-Mute Pop Noise Suppression
- Short Circuit Protection
- Over-Temperature Protection
- Low Cost DMOS Process
APPLICATIONS:
- Flat Panel Televisions
- Automotive Amplifiers
- PC Audio Systems
- Mini Components
Circuit Diagram:
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| Dual BTL class-D power audio amplifier AD199x |
Datasheet for AD199x: Download
General Description:
Amplifier’s efficiency is 70%, distortions at cut frequency were at most 0.2% at 20Hz on 8 Ω and 10W. With a power supply of ± 30V the mosfet audio amplifier can deliver 45W on 8 Ω and 70w on 4 Ω. Remember that this audio amplifier is not protected on shortcircuits so everytime you switch on check to see if the speaker is connected.
Circuit Diagram:
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| 70W mosfet power amp irf9530 irf530 |
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