Showing posts with label w. Show all posts
Showing posts with label w. Show all posts
Tuesday, November 18, 2014
TDA7294 150 W Power Amplifier
This is power amplifier based on IC TDA7294 with output power 150W with 8 ohm impedance, source voltage + - 25V. for circuit see image below.
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| TDA7294 Power Amplifier |
Wednesday, September 10, 2014
10 W Audio Amplifier Circuit Diagram
This circuit is a general-purpose 10-W audio amplifier for moderate-power PA or modulator use in an AM transmitter. With higher voltages and a change in bias resistors, up to 30 W can be obtained. The Output Stage Amplifier using transistor 2N3055 and MJE2055.
| 10 W Audio Amplifier Circuit Diagram |
Tuesday, September 9, 2014
TDA1556Q 2 x 22 W stereo BTL differential amplifier with speaker protection
FEATURES
Few peripheral components
High output power
Low output offset voltage
Fixed gain
Loudspeaker protection (with diagnostic facility)
Differential inputs
Dynamic Distortion Detector (DDD)
High common mode input signal
Very high CMRR
Good ripple rejection
Mute/stand-by switch
Load dump protection
Short-circuit safe
Thermally protected
Reverse polarity safe
High energy handling capability at the outputs (VP = 0 V)
Electrostatic discharge protection
No switch-on/switch-off plop
Flexible leads
Low thermal resistance
GENERAL DESCRIPTION
TDA1556Q is a monolithic integrated class-B output amplifier containing two 22 Watt amplifiers in a BTL configuration. The device is contained in a 17-lead single-in-line (SIL) plastic power package. It has two differential inputs and is primarily intended for car booster applications.
Circuit Diagram:
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| Circuit diagram for TDA1556Q 2 x 22 W stereo BTL differential amplifier with speaker protection |
Sunday, August 31, 2014
TDA7566 4 x 40 W multifunction quad power amplifier
Features
- DMOS power output
- High output power capability 4 x 25 W/4 @
- 14.4 V, 1 kHz, 10 % THD, 4 x 40 W max. power
- Max. output power 4 x 60 W/2
- Full I2C bus driving:
- Standby
- Independent front/rear soft play/mute
- Selectable gain 26 dB - 12 dB
- I2C bus digital diagnostics
- Full fault protection
- DC offset detection
- Four independent short circuit protection
- Clipping detector pin with selectable threshold (1%, 10%)
- ESD protection
Description
The TDA7566 is a new BCD technology quad bridge type of car radio amplifier in Flexiwatt25 package specially intended for car radio applications. Thanks to the DMOS output stage the TDA7566 has a very low distortion allowing a clear powerful sound. This device is equipped with a full diagnostics array that communicates the status of each speaker through the I2C bus.The possibility to control the configuration and behavior of the device by means of the I2C bus makes TDA7566 a very flexible product.
Circuit Diagram:
Circuit Diagram:
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| TDA7566 - 4 x 40 W multifunction quad power amplifier |
Friday, August 29, 2014
4x25 W quad bridge car radio amplifier TDA7381
General description:
The TDA7381 is a class AB audio power amplifier in Flexiwatt25 package designed for car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7381 allows a rail to rail output voltage swing with no need of bootstrap capacitors.
Features:
- 4 x 30 W/4 max.
- 4 x 25 W/4 EIAJ
- 4 x 18 W/4 @ 14.4 V, 1 kHz, 10 %
- 4 x 15 W/4 @ 13.2 V, 1 kHz, 10 %
- Clipping detector
- Low distortion
- Low output noise
- Standby function
- Mute function
- Automute at min. supply voltage detection
- Clipping
- Out to GND short
- Out to VS short
- Thermal shutdown
- Internally fixed gain (26 dB)
- No external compensation
- No bootstrap capacitors
- Output short circuit to GND, to VS, across the load
- Very inductive loads
- Overrating chip temperature with soft
- thermal limiter
Circuit diagram:
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| 4x25 W quad bridge car radio amplifier |
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