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Showing posts from May, 2014

2x12 W hi-fi audio power amplifiers with mute

General Description for TDA2616Q:

The TDA2616 and TDA2616Q are dual power amplifiers. The TDA2616 is supplied in a 9-lead single-n-line (SIL9) plastic power package (SOT131), while the TDA2616Q is supplied in a 9-lead SIL-bent-to-DIL plastic power package (SOT157). They have been especially designed for mains fed pplications, such as stereo radio and stereo TV.
Features:

• Requires very few external components
• No switch-on/switch-off clicks
• Input mute during switch-on and switch-off
• Low offset voltage between output and ground
• Excellent gain balance of both amplifiers
• Hi-fi in accordance with IEC 268 and DIN 45500
• Short-circuit proof and thermal protected
• Mute possibility
Circuit diagram for TDA2616:



Datasheet for TDA2616:Download

30W bridge car radio amplifier TDA7256

Description of TDA7256:

The TDA7256 is a class AB fully protected bridge power amplifier designed for car radio application. The high current capability allows to dirve low impedance loads up to 22 Ohm. The differential inputs availability makes it particularly suitable for boosters and active loudspeakers applications
Features of TDA7256:
NO AUDIBLE POP DURING MUTE ANDSTANDBY OPERATIONSMUTING TTL COMPATIBLEVERY LOW STANDBY CONSUMPTIONPROGRAMMABLE TURN ON DELAYDIFFERENTIAL INPUTSHORT CIRCUIT PROTECTIONS:RL SHORT - OUT TO GROUND - OUT TO VSOTHER PROTECTIONS:Load dump voltage surgeLoudspeakerDC currentVery inductive loadOverrating temperatureOpen groundCircuit diagram for TDA7256:

PCB and layout for TDA7256:

PCB and layout for TDA7256:Download



Subwoofer Design - Bandpass Dual Chamber

Bandpass Dual Chamber Basic Theory:
The front and rear of the driver are mounted in separate enclosures and tuned to specific calculated values. Resultant output is suppose to be better than any of the other designs mentioned previously. Bose owns the rights to the exact details behind this design. They explain the theory like this, "The low-frequency speaker drivers are located between separate acoustic compression chambers inside a patented Bose Acoustimass module. As each speaker cone moves, it excites air in the chambers. Trapped in the chamber, this air acts as an acoustic spring, which interacts with the air in the port to produce more low-frequency sound with less power. The system is more efficient and requires less cone motion, which in turn produces less distortion. In the event that any otherwise audible distortion is produced, the patented design traps it inside the acoustic chambers -- so it never enters the room. The result is an Acoustimass module with no audib…

Subwoofer Design - Order Vented

Order Vented Basic Theory: Also known as bass-reflex, ported or vented. The driver is mounted into an enclosure which houses a large opening, port, vent or slot that extends into the cabinet a specified length. The length and area of this vent are extremely critical to the proper function of a 4th order enclosure. The port and driver contribute together to provide the desired response characteristic. The driver is generally mounted with the front facing outwards, but is not restricted to this method only. The vent which extends into the cabinet tunes the enclosure to a specific frequency (known as fB) thereby acting as a high pass filter on the driver. Driver excursion is at its minimum at fB where the vent then takes over and provides most of the output. Cut-off rate below fB is 24 dB/octave but can be varied up or down 5-6 dB depending upon the exact tuning frequency and volume of the enclosure. There are various types of alignments that all fit into the ported 4th order cate…

Subwoofer Design - Order Acoustic Suspension

Order Acoustic Suspension Basic Theory:
The driver is mounted in a sealed, airtight enclosure, generally with the front of the driver facing outward but is not restricted to this method only. The volume of the enclosure is chosen to achieve a desired system Q which defines the response characteristics of the driver and enclosure. Q values may range between the 0.5 and 1.5 - with 0.5 being overdamped, 1.5 being underdamped, and 0.7 being critically damped or flat. The total system Q (also known as Qtc) is dependent on 3 things: the volume of enclosure, the T/S parameters of driver and internal treatment compounds. A a general rule only, sealed enclosures may be best suited for drivers with an EBP (Efficiency Bandwidth Product) of 50.0 or lower and drivers with Qts values above 0.40 but is not restricted to these exact values. EBP is calculated by taking the the fs of the driver and dividing it by the Qes - therefore EBP = fs/Qes. The cutoff rate is typically 12 dB/octave below f3…

80W Subwoofer Amplifier TDA7295

General Description Subwoofer Amplifier TDA7295:
The 80W Subwoofer Amplifier TDA7295 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Sterio, self powered loudspeakers, Top-class TV). Thanks to the wide voltage range and to the high uot current capability it is able to suply the highest power into both 4 Ohm and 8 Ohm loads even in presence of poor supply regulation, with high Supply Voltage Rejection. The Built in muting function with turn on delay simplifies the remote opeeration avoiding switching on-off noises.
Features of TDA7295: Very high operating voltage range (+-40V)Dmos Power StageVery low distortionVery low noise
Circuit diagram for TDA7295:
Datasheet for TDA7295:Download



TDA8510J power amplifiers 2 x 13 + 26W

General Description for TDA8510J:


The TDA8510J is an integrated class-B output amplifier in a 17-lead single-in-line (SIL) power package. It contains a 26 W Bridge-Tied Load (BTL) amplifier and 2 × 13 W Single-Ended (SE) amplifiers. The device is primarily developed for multi-media applications and active speaker systems (stereo with subwoofer).

Features of TDA8510J:
Requires very few external componentsHigh output powerLow output offset voltage (BTL channel)Fixed gainDiagnostic facility (distortion, short-circuit and temperature detection)Good ripple rejectionMode select switch (operating, mute and standby)AC and DC short-circuit safe to ground and to VPLow power dissipation in any short-circuit conditionThermally protectedReverse polarity safeElectrostatic discharge protectionNo switch-on/switch-off plopFlexible leadsLow thermal resistanceIdentical inputs (inverting and non-inverting)..
Circuit diagram for TDA8510J:
Datasheet for TDA8510J:Download Where you can buy TDA8510J:Aliexpress

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 VVery low quiescent currentLow distortionFew external componentsDifferential inputsUsable as a mono amplifier in Bridge-Tied Load (BTL) or stereo Single-Ended (SE)Single-ended mode without loudspeaker capacitorMute and Standby modeShort-circuit proof to ground, to supply voltage (< 10 V) and across loadNo switch on or switch off clicksSD protected on all pins
Applications for TDA8559T:
Portable telephonesMP3 playersPortabl…

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 componentsHigh output powerFixed gainDiagnostic facility (distortion, short-circuit andtemperature detection)Good ripple rejectionMode select switch (operating, mute and standby)Load dump protectionAC and DC short-circuit safe to ground and to VPLow power dissipation in any short-circuit conditionThermally protectedReverse polarity safeElectrostatic discharge protectionNo switch-on/switch-off plopFlexible leadsLow thermal resistanceIdentical inputs.Circuit digram for TDA8565Q:
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 inputsVery high Common Mode Rejection Ratio (CMRR)High common mode input signal handlingRequires very few external componentsHigh output power4 Ω and 2 Ω load driving capabilityLow offset voltage at outputFixed gainDiagnostic facility (distortion, short-circuit and temperature pre-warning)Good ripple rejectionMode select swit…

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 convert…

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 mountingseparated preamplifier and power amplifierhigh output powerthermal protectionhigh input impedancelow current drainlimited 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 …

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:



Datasheet for TDA1010A: Download Where you can buy: Aliexpress

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

1000W MOSFET stage Master MK2

1000W MOSFET Description:

Fifth Generation HEXFETs from International Rectifier utilize advanced processing techniques to achieve extremely low on-resistance per silicon area. This benefit, combined with the fast switching speed and ruggedized device design that HEXFET Power MOSFETs are well known for, provides the designer with anextremely efficient and reliable device for use in a wide variety of applications. The TO-247 package is preferred for comme rcial-industrial applications where higher power levels preclude the use of TO-220 devices. The TO-247 is similar but superior to the earlier TO-218 package because of its isolated mounting hole. The 1000Watt MOSFET LEGEND stage Master MK2 is a very good and powerful amplifier. It is not into the classroom HiEnd sure, but very respectable sounding unit with lots of of power. It was not designed with home interior as the primary goal before, such a power used only rarely in the house and indoor except perhaps in some larger nightclubs. Fr…