5/12/2014

TDA8559T Low-voltage stereo headphone amplifier



General description for TDA8559T:

The TDA8559T is a stereo amplifier that operates over a wide supply voltage range from 1.9 V to 30 V and consumes a very low quiescent current. This makes it suitable for battery fed applications (2 × 1.5 V cells). Because of an internal voltage buffer, this device can be used with or without a capacitor connected in series with the load. It can be applied as a headphone amplifier, but also as a mono amplifier with a small speaker (25 Ω), or as a line driver in mains applications.

Features for TDA8559T:

  • Operating voltage from 1.9 V to 30 V
  • Very low quiescent current
  • Low distortion
  • Few external components
  • Differential inputs
  • Usable as a mono amplifier in Bridge-Tied Load (BTL) or stereo Single-Ended (SE)
  • Single-ended mode without loudspeaker capacitor
  • Mute and Standby mode
  • Short-circuit proof to ground, to supply voltage (< 10 V) and across load
  • No switch on or switch off clicks
  • SD protected on all pins

Applications for TDA8559T:

  • Portable telephones
  • MP3 players
  • Portable audio
  • Mains fed equipment
Circuit diagram for TDA8559T:

PCB layout for TDA8559T:


Datasheet for TDA8559T: Download


5/11/2014

12W single-ended car radio power amplifier with diagnostic interface

General Description for TDA8565Q:


The TDA8565Q is an integrated class-B output amplifier in a 17-lead DIL-bent-to-SIL power package. It contains 4 × 12 W single-ended amplifiers.

Features of TDA8565Q:



  • Requires very few external components
  • High output power
  • Fixed gain
  • Diagnostic facility (distortion, short-circuit andtemperature detection)
  • Good ripple rejection
  • Mode select switch (operating, mute and standby)
  • Load dump protection
  • AC and DC short-circuit safe to ground and to VP
  • Low power dissipation in any short-circuit condition
  • Thermally protected
  • Reverse polarity safe
  • Electrostatic discharge protection
  • No switch-on/switch-off plop
  • Flexible leads
  • Low thermal resistance
  • Identical inputs.
Circuit digram for TDA8565Q:
12W single-ended car radio power amplifier with diagnostic interface

Datasheet for TDA8565Q: Download
Where you can buy: Aliexpress

TDA8566 2x40 W/2 Ω stereo BTL car radio power amplifier

Description of TDA8566:

The TDA8566 is an integrated class-B output amplifier which is available in several packages. TDA8566TH is contained in a 20-lead small outline plastic package. The  TDA8566TH1 is a 24-lead small outline plastic package which is pin compatible with the 2C-bus controlled amplifier TDA1566TH for one board layout. TDA8566Q is a 17-pin DIL-bent-SIL package. The device contains 2 amplifiers in a Bridge-Tied Load (BTL) configuration. The output power is 2 × 25 W in a 4 Ω load or 2 × 40 W in a 2 Ω load. It has a differential input stage and 2 diagnostic outputs. The device is primarily developed for car radio applications.

Features TDA8566:
  • Differential inputs
  • Very high Common Mode Rejection Ratio (CMRR)
  • High common mode input signal handling
  • Requires very few external components
  • High output power
  • 4 Ω and 2 Ω load driving capability
  • Low offset voltage at output
  • Fixed gain
  • Diagnostic facility (distortion, short-circuit and temperature pre-warning)
  • Good ripple rejection
  • Mode select switch (operating, mute and standby)
  • Load dump protection
  • Short-circuit proof to ground, to VP and across the load
  • Low power dissipation in any short-circuit condition
  • Thermally protected
  • Reverse polarity safe
  • Protected against electrostatic discharge
  • No switch-on/switch-off plops
  • Low thermal resistance
  • TDA8566TH1 is pin compatible with TDA1566TH

Applications:
  • Home-sound sets 
  • Multimedia systems 
  • Car audio (boosters)
Circuit diagram TDA8566:

TDA8566 2 × 40 W/2 Ω stereo BTL car radio power amplifier with differential inputs and diagnostic outputs

Datasheet for TDA8566Download
Where you can buy: Aliexpress
Where you can buy: DealExtreme

TDA8920 2x100W class-D power amplifier

Description of TDA8920:

The TDA8920B is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 × 100 W. The device is available in the HSOP24 power package and in the DBS23P through-hole power package. The amplifier operates over a wide supply voltage range from ±12.5 V to ±30 V (±32 V non operating) and consumes a very low quiescent current. The TDA8920B is a two channel audio power amplifier using class-D technology. The audio input signal is converted into a digital pulse width modulated signal via an analog input stage and Pulse Width Modulation (PWM) modulator. To enable the output power transistors to be driven, this digital PWM signal is applied to a control and handshake block and driver circuits for both the high side and low side. In this way a level shift is performed from the low power digital PWM signal (at logic levels) to a high power PWM signal which switches between the main supply lines. A 2nd-order low-pass filter converts the PWM signal to an analog audio signal across the loudspeakers. The TDA8920B one-chip class-D amplifier contains high power D-MOS switches, drivers, timing and handshaking between the power switches and some control logic. For protection a temperature sensor and a maximum current detector are built-in. The two audio channels of the TDA8920B contain two PWM modulators, two analog feedback loops and two differential input stages. It also contains circuits common to both channels such as the oscillator, all reference sources, the mode functionality and a digital timing manager.

Features TDA8920:
  • Zero dead time switching 
  • Advanced current protection: output current limiting 
  • Smooth start-up: no pop noise due to DC offset 
  • High efficiency 
  • Operating supply voltage from ±12.5 V to ±30 V 
  • Low quiescent current 
  • Usable as a stereo Single-Ended (SE) amplifier or as a mono amplifier in Bridge-Tied Load (BTL) 
  • Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in Bridge-Tied Load (BTL) 
  • High output power 
  • High supply voltage ripple rejection 
  • Internal switching frequency can be overruled by an external clock 
  • Full short-circuit proof across load and to supply lines 
  • Thermally protected

Applications:
  • Television sets 
  • Home-sound sets 
  • Multimedia systems 
  • All mains fed audio systems 
  • Car audio (boosters)

Circuit diagram TDA8920:
TDA8920 2x100W class-D power amplifier
   

Datasheet for TDA8920Download
Where you can buy: Aliexpress
Where you can buy: DealExtreme

5/06/2014

TDA1011 2 to 6 W audio power amplifier

Description:

     The TDA1011 is a monolithic integrated audio amplifier circuit in a 9-lead single in-line (SIL) plastic package. The device is especially designed for portable radio and recorder applications and delivers up to 4 W in a 4Ω load impedance. The device can deliver up to 6 W into 4Ω at 16 V loaded supply in mains-fed applications. The maximum permissible supply voltage of 24 V makes this circuit very suitable for d.c. and a.c. apparatus, while the very low applicable supply voltage of 3,6 V permits 6 V applications.

Special features:

  • single in-line (SIL) construction for easy mounting
  • separated preamplifier and power amplifier
  • high output power
  • thermal protection
  • high input impedance
  • low current drain
  • limited noise behaviour at radio frequencies

Reference:

  • Supply voltage range Vp...........................3,6 to 20 V 
  • Repetitive peak output current IORM...........max. 3 A 
  • Operating ambient temperature Tamb ........−25 to + 150 °C 
  • Storage temperature Tstg ........................−55 to + 150 °C 

Circuit diagram:
TDA1011 circuit diagram

TDA1011 layout

TDA1011 pcb


    

Datasheet for TDA1011A: Download
Where you can buy: Aliexpress

TDA1010A 2 x 6W audio power amplifier

Description:

     The TDA1010A is a monolithic integrated class-B audio amplifier circuit in a 9-lead single in-line (SIL) plastic package. The device is primarily developed as a 6 W car radio amplifier for use with 4Ωand 2Ωload impedances. The wide supply voltage range and the flexibility of the IC make it an attractive proposition for record players and tape recorders with output powers up to 10 W.

Special features:

  • single in-line (SIL) construction for easy mounting 
  • separated preamplifier and power amplifier 
  • high output power 
  • low-cost external components 
  • good ripple rejection 
  • thermal protection 

Reference:

  • Supply voltage range Vp...........................6 to 24 V 
  • Repetitive peak output current IORM...........max. 3 A 
  • Operating ambient temperature Tamb ........−25 to + 150 °C 
  • Storage temperature Tstg ........................−55 to + 150 °C 

Circuit diagram:
Tda1010A Circuit Diagram

Tda1010A layout

Tda1010A pcb
    

Datasheet for TDA1010A: Download
Where you can buy: Aliexpress

5/04/2014

NE5532 Headphone Amplifier

NE5532 Headphone Amplifier Circuit Diagram:

Partlist for NE5532:
P1 = 22K
R1 = 18K
R2 = 68K
R3 = 68K
R4 = 68K
R5 = 18K
R6 = 68K
C1 = 4.7uF/25v
C2 = 4.7uF/25v
C3 = 22pF
C4 = 220uF/25v
C5 = 220uF/25v
C6 = 4.7uF/25v
C7 = 22pF
C8 = 220uF/25v
J1 = 3.5mm Stereo Jack
B1 = 9V Battery
IC1 = NE5532
SW1 = SPST Toggle Switch

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200W Audio Amplifier Circuit

Circuit description: Connecting two TDA2030 thru cheap power transistors we can create a amplifier wich can deliver a higher power. Wi...

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