Showing posts with label w. Show all posts
Showing posts with label w. Show all posts
Saturday, September 20, 2014
4 × 40 W BTL quad car radio power amplifier
FEATURES:
Requires very few external components
High output power
Low output offset voltage
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 safe to ground and to VP and across the load
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
Pin compatible with the TDA8568Q, except for the gain.
GENERAL DESCRIPTION:
The TDA8571J is a integrated class-B output amplifier contained in a 23-lead Single-In-Line (SIL) plastic power package. It contains four amplifiers in a BTL configuration, each with a gain of 34 dB. The output power is 4 × 40 W (EIAJ) into a 4 Ω load.
APPLICATIONS:
Primarily developed for car radio applications
Circuit Diagram:
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| 4 × 40 W BTL quad car radio power amplifier |
Saturday, September 13, 2014
2 x 25 W Power amplifier for car radio TDA7376B
Features
High output power capability:
2 x 40 W max./ 4
2 x 35 W/4 EIAJ
2 x 25 W/4 (14.4 V, 1 kHz, 10 %)
2 x 25 W/ 2 (14.4 V, 1 kHz, 10 %)
Differential inputs
Minimum external components count
Internally fixed gain (26 db)
Mute function (cmos compatible)
Automute at minimum supply voltage detection
Standby function
No audible pop during mute and standby operations
Clipping detector with programmable distortion threshold
short circuit (out to ground, out to supply voltage, across the load)
overrating chip temperature with soft thermal limiter
load dump voltage
fortuitous open ground
loudspeaker dc current
ESD
Description
High output power capability:
2 x 40 W max./ 4
2 x 35 W/4 EIAJ
2 x 25 W/4 (14.4 V, 1 kHz, 10 %)
2 x 25 W/ 2 (14.4 V, 1 kHz, 10 %)
Differential inputs
Minimum external components count
Internally fixed gain (26 db)
Mute function (cmos compatible)
Automute at minimum supply voltage detection
Standby function
No audible pop during mute and standby operations
Clipping detector with programmable distortion threshold
short circuit (out to ground, out to supply voltage, across the load)
overrating chip temperature with soft thermal limiter
load dump voltage
fortuitous open ground
loudspeaker dc current
ESD
Description
The TDA7376B is a new technology dual bridge audio amplifier in Multiwatt 15 package designed for car radio applications. Thanks to the fully complementary PNP/NPN output stage configuration the TDA7376B delivers a rail-to-rail voltage swing with no need of bootstrap capacitors. Differential input pairs, that will accept either single ended or differential input signals, guarantee high noise immunity making the device suitable for both car radio and car boosters applications.The audio mute control, that attenuates the output signal of the audio amplifiers, suppresses pop On - Off transients and cuts any noises coming from previous stages. The standby control, that de-biases the amplifiers, reduces the cost of the power switch. The on-board programmable distortion detector allows compression facility whenever the amplifier is over driven, so limiting the distortion at any levels inside the presettable range.
Circuit diagram:
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| 2 x 35 W Power amplifier for car radio |
PCB layout
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| pcb layout for TDA7376B Power amplifier for car radio |
Tuesday, September 9, 2014
TDA7294 150 W Power Amplifier
Description of bridge TDA7294:
This is power amplifier based on IC TDA7294 with output power 150W with 8 ohm impedance, source voltage + - 25V. for circuit see image below.
Circuit diagram for TDA7294:
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| TDA7294 150 W Power Amplifier |
Saturday, September 6, 2014
2 x 40 W car radio power amplifier
FEATURES
Low dissipation due to switching from Single-Ended (SE) to Bridge-Tied Load (BTL) mode
Differential inputs with high Common Mode Rejection Ratio (CMRR)
Mute, standby or operating mode selectable by pin
Load dump protection circuit
Short-circuit safe to ground; to supply voltage and across load
Loudspeaker protection circuit
Thermal protection at high junction temperature
Device switches to single-ended operation at high junction temperature
Clip detection at 2.5 % THD
Diagnostic signal indicating clipping, short-circuit protection and pre-warning of thermal protection.
GENERAL DESCRIPTION
The TDA1565TH is a monolithic power amplifier in a 20-lead heatsink small outline plastic package. It contains two identical 40 W amplifiers. Power dissipation is minimized by switching from SE to BTL mode only when a higher output voltage swing is needed. The device is developed primarily for car radio applications.
Circuit Diagram:
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| Circuit diagram 2 x 40 W car radio power amplifier |
PCB layout:
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| PCB layout TDA1564 2 x 40 W car radio power amplifier |
Sunday, August 31, 2014
TDA1552Q 2 x 22 W BTL stereo car radio power amplifier
GENERAL DESCRIPTION
The TDA1552Q is an integrated class-B output amplifier in a 13-lead single-in-line (SIL) plastic power package. The circuit contains 2 x 22 W amplifiers in Bridge Tied Load (BTL) configuration. The device is primarily developed for car radio applications.
Features
- Requires very few external components
- High output power
- Low offset voltage at outputs
- Fixed gain
- Good ripple rejection
- Mute/stand-by switch
- Load dump protection
- AC and DC short-circuit-safe to ground and VP
- Thermally protected
- Reverse polarity safe
- Capability to handle high energy on outputs (VP = 0 V)
- Protected against electrostatic discharge
- No switch-on/switch-off plop
- Low thermal resistance
- Flexible leads.
Circuit diagram:
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| Circuit diagram for TDA1552Q 2 x 22 W BTL stereo car radio power amplifier |
Tuesday, August 19, 2014
10 10 W Stereo Amplifier with Tda 2004
Hello! in this post I will show a small amplifier using integrated schema TDA2004 get two outputs 10 watts, the schema is very simple, if you want to change the schema, or a mono version refer to the datasheet tda2004!
The schema is powered by source between 12 and 15 volts with a current of 1.5 Amperes.
The schema is powered by source between 12 and 15 volts with a current of 1.5 Amperes.
See the figure below:
Sunday, August 17, 2014
4 x 46 W quad bridge car radio amplifier TDA7384A
Features
■ High output power capability:
– 4 x 46 W / 4 max.
– 4 x 27 W / 4 @ 14.4 V, 1 kHz, 10 %
■ Low distortion
■ Low output noise
■ Standby function
■ Mute function
■ Automute at min. supply voltage detection
■ Low external component count:
– Internally fixed gain (26 dB)
– No external compensation
– No bootstrap capacitors
■ Protections:
– Output short circuit to GND, to VS, across
the load
– Very inductive loads
– Overrating chip temperature with soft
thermal limiter
– Load dump voltage
– Fortuitous open GND
– Reversed battery
– ESD
Description
The TDA7384A is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed
■ High output power capability:
– 4 x 46 W / 4 max.
– 4 x 27 W / 4 @ 14.4 V, 1 kHz, 10 %
■ Low distortion
■ Low output noise
■ Standby function
■ Mute function
■ Automute at min. supply voltage detection
■ Low external component count:
– Internally fixed gain (26 dB)
– No external compensation
– No bootstrap capacitors
■ Protections:
– Output short circuit to GND, to VS, across
the load
– Very inductive loads
– Overrating chip temperature with soft
thermal limiter
– Load dump voltage
– Fortuitous open GND
– Reversed battery
– ESD
Description
The TDA7384A is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed
for high end car radio applications. Based on a fully complementary PNP/NPN configuration, the TDA7384A allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced boundary components count allows very compact sets.
Circuit Diagram
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| 4 x 46 W quad bridge car radio amplifier |
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