AmplifierCircuits

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

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...

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 Pow...

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

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 ...

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

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

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

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

Circuit diagram 60W High Efficiency amplifier STA502

Circuit Diagram: 50W Audio Circuit Amplifier

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

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

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

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

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

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

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

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

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 dif...