Showing posts with label 8 Ω. Show all posts
Showing posts with label 8 Ω. Show all posts

10/03/2017

8W AUDIO AMPLIFIER TDA1908

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General Description:

The TDA1908 is a monolithic integrated circuit in 12 lead quad in-line plastic package intended for low frequency power applications.The mounting is compatible with the old types TBA800, TBA810S, TCA830S and TCA940N. Its main features are:

Features:

  • flexibility in use with a max output curent of 3A and an operating supply voltage range of 4V to 30V;
  • protection against chip overtemperature;
  • soft limiting in saturation conditions;
  • low ”switch-on” noise;
  • low number of external components;
  • high supply voltage rejection;

Circuit Diagram
8W AUDIO AMPLIFIER TDA1908

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9/15/2014

2 x 1 W BTL audio amplifier with output channel switching

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FEATURES:

  • Selection between output channels
  • Flexibility in use
  • Few external components
  • Low saturation voltage of output stage
  • Gain can be fixed with external resistors
  • Standby mode controlled by CMOS compatible levels
  • Low standby current
  • No switch-on/switch-off plops
  • High supply voltage ripple rejection
  • Protected against electrostatic discharge
  • Outputs short-circuit safe to ground, VCC and across theload
  • Thermally protected.


APPLICATIONS:

  • Telecommunication equipment
  • Portable consumer products
  • Personal computers
  • Motor-driver (servo).


GENERAL DESCRIPTION:

The TDA8547(T) is a two channel audio power amplifier for an output power of 2 × 1 W with an 8 Ω load at a 5 V supply. The circuit contains two BTL amplifiers with a complementary PNP-NPN output stage and standby/mute logic. The operating condition of all channels of the device (standby, mute or on) is externally controlled by the MODE pin. With the SELECT pin one of the output channels can be switched in the standby condition. This feature can be used for loudspeaker selection and also reduces the quiescent current consumption. The TDA8547T comes in a SO16 package and the TDA8547 in a DIP16 package.

Circuit Diagram:

Circuit diagram for 2 x 1 W BTL audio amplifier with output channel switching



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9/11/2014

High Efficiency Power Amplifier 2 x 30W into 8Ω or 1 x 60W into 4 Ω

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GENERAL DESCRIPTION
The DDX-2050 power device is a monolithic dual channel H-Bridge that can provide up to 30 watts 
per channel of audio power at very high efficiency. The DDX-2050 power device  contains a logic interface, integrated bridge  drivers, high efficiency MOSFET output  transistors and protection circuitry. The device  may be used as a dual bridge or reconfigured as  a single bridge with double the output current  capability.  The benefits of the DDX amplification system are  an all-digital design that eliminates the need for a  digital to analog converter (DAC) and the high  efficiency operation derived from the use of  Apogee's patented damped ternary pulse width  modulation (PWM). This approach provides an  efficiency advantage over conventional Class-D  designs and up to three times the efficiency of  typical Class A/B amplifiers with music input  signals.
Mono High Efficiency Power Amplifier 60 Watt

Stereo High Efficiency Power Amplifier 2 x 30 Watt

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9/10/2014

100W Audio Power Amplifier with Mute

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General Description:
The LM4732 is a stereo audio amplifier capable of typically delivering 50W per channel of continuous average output power into a 4Ω or 8Ω load with less than 10% THD+N from 20Hz - 20kHz. The LM4732 has short circuit protection and a thermal shut down feature that is activated when the die temperature exceeds 150˚C. The LM4732 also has an under voltage lock out feature for click and pop free power on and off. Each amplifier of the LM4732 has an independent smooth transition fade-in/out mute. The LM4732 has a wide operating supply range from +/-10V - +/-40V allowing for lower cost unregulated power supplies to be used. The LM4732 amplifiers can easily be configured for bridge or parallel operation for 100W mono solutions.
Circuit Diagram:
100W Audio Power Amplifier with Mute




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9/03/2014

1W 2W Audio power IC for notebook PC

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General Description:
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:
1W 2W Audio power IC for notebook PC

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9/02/2014

Dual 1-W BTL audio power amplifier

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  • 1-W output (8 Ω) with supply voltage of 5 V
  • On-chip standby function
  • On-chip volume function
Circuit Diagram:
Dual 1-W BTL audio power amplifier

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5W Mono channel SEPP audio power amplifier IC

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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:
Circuit diagram for 5W Mono channel SEPP audio power amplifier IC

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10W Dual Channel SEPP Power Amplifier

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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

  • 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:
Circuit Diagram for 10W Dual Channel SEPP Power Amplifier

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9/01/2014

3 W BTL audio amplifier

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General description:

The SA58631 is a one channel audio amplifier in an HVSON8 package. It provides power output of 3 W with an 8 Ω load at 9 V supply. The internal circuit is comprised of a BTL (Bridge Tied Load) amplifier with a complementary PNP-NPN output stage and standby/mute logic. The SA58631 is housed in an 8-pin HVSON package which has an exposed die attach paddle enabling reduced thermal resistance and increased power dissipation.

Circuit Diagram:
3 W BTL audio amplifier
PCB layout:
Pcb layout 3 W BTL audio amplifier

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8/15/2014

60W High Efficiency amplifier STA502

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Circuit diagram 60W High Efficiency amplifier STA502

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50W Audio Circuit Amplifier

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Circuit Diagram:
50W Audio Circuit Amplifier

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8/14/2014

2 x 175 W Audio Circuit Amplifier

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Circuit Diagram:
Circuit Diagram 2 x 175 W Audio Circuit Amplifier

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8/13/2014

2 x 10 or 1 x 20 W class-D audio amplifier

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Circuit Diagram:
2 x 10 or 1 x 20 W class-D audio amplifier

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8/11/2014

6 + 6W STEREO AMPLIFIER WITH MUTE & ST-BY TDA7499

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Features:


  • WIDE SUPPLY VOLTAGE RANGE UP TO±18V
  • 6 + 6W @ THD =10%, RL = 8Ω, VS = +14V
  • NO POP AT TURN-ON/OFF
  • MUTE (POP FREE)
  • STAND-BY FEATURE (LOW Iq)
  • SHORT CIRCUIT PROTECTION TO GND
  • THERMAL OVERLOAD PROTECTION
Circuit Diagram:
TDA7499 stereo amplifier

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5W+5W AMPLIFIER WITH DC VOLUME CONTROL TDA7496

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Circuit Diagram:
5W+5W AMPLIFIER WITH DC VOLUME CONTROL


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11W+11W AMPLIFIER WITH DC VOLUME CONTROL

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General Description:

TDA7495 is a stereo 11+11W class AB power amplifier assembled in the @ Multiwatt 15 package, specially designed for high quality sound, TV applications. Features of the TDA7495 include linear volume control, Stand-by and mute functions.

Circuit Diagram:
TDA7495 circuit diagram


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10W AMPLIFIER WITH DC VOLUME CONTROL TDA7494

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Features:

  • 10W OUTPUT POWER RL = 8Ω, 
  • @ THD = 10% VCC = 28V
  • ST-BY AND MUTE FUNCTIONS
  • LINEAR VOLUME CONTROL DC COUPLED
  • WITH POWER OP AMPLIFIER
  • NO BOUCHEROT CELL
  • NO ST-BY RC INPUT NETWORK
  • SIGNAL LINE OUTPUT BEFORE VOLUME
  • CONTROLLING AND MUTING
  • 3 SWITCHABLE VOLTAGE CONTROLLED
  • INPUT PINS
  • SINGLE SUPPLY RANGING UP TO 35V
  • SHORT CIRCUIT PROTECTION
  • THERMAL OVERLOAD PROTECTION
  • INTERNALLY FIXED GAIN 
  • SOFT CLIPPING
  • LOW TURN-ON TURN-OFF POP NOISE
  • MULTIWATT 15 PACKAGE
Circuit Diagram:
Circuit Diagram TDA7494

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18W MONO CLASS-D AMPLIFIER

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Features:

  • 18W OUTPUT POWER:
  • RL = 8Ω/4Ω; THD = 10%
  • HIGH EFFICIENCY
  • WIDE SUPPLY VOLTAGE RANGE (UP TO ±25V)
  • SPLIT SUPPLY
  • OVERVOLTAGE PROTECTION
  • ST-BY AND MUTE FEATURES
  • SHORT CIRCUIT PROTECTION
  • THERMAL OVERLOAD PROTECTION
Circuit Diagram:
Circuit diagram for 18W MONO CLASS-D AMPLIFIER

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10W MONO CLASS-D AMPLIFIER

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General Description:

The TDA7480 is an audio class-D amplifier asempled in power dip package specially designed for high efficientcy applications mainly for TV and Home stereo sets.

Circuit Diagram:
Circuit diagram for 10W MONO CLASS-D AMPLIFIER

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8/09/2014

35 W bridge car radio amplifier TDA7391

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Features

 High power capability:
– 40 W/4  max
– 35 W/4  EIAJ
– 45 W/3.2  max
– 40 W/3.2  EIAJ
– 32 W/3.2  @ VS = 14.4 V, f = 1 kHz, 
d = 10 %
– 26 W/4 @ VS = 14.4 V, f = 1 kHz, 
d = 10 %
 DIfferential inputs (either single ended or 
differential input signal are accepted)
 Minimum external component count:
– No bootstrap capacitors
– No Boucherot cells
– Internally fixed gain (30 dB)
– No SVR Capacitor
 Standby function (CMOS compatible)
 Programmable turn-on/off delay
 No audible pop during mute and standby 
operations
 Protections:
– Short circuit (to GND, to VS, across the 
load)
– Very inductive loads
– Chip over temperature
– Load dump
– Open GND
– ESD
Description

The TDA7391 is a bridge class AB audio power amplifier specially intended for car radio high power applications. The high power capability together with the possibility to operate either in differential input mode or single ended input mode makes it suitable for boosters and high end car radio equipments. The exclusive fully complementary output stage and the internal fixed gain configuration drop the external component count.The on board clipping detector allows easy implementation of gain compression systems.

Circuit Diagram
35 W bridge car radio amplifier circuit diagram
PCB layout:
35 W bridge car radio amplifier layout pcb

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