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Sunday, September 14, 2014

2 x 32W DUAL BRIDGE CAR RADIO AMPLIFIER TDA7393

Features:

HIGH OUTPUT POWER CAPABILITY:
2 x 35W max./4Ω
2 x 32W EIAJ/4Ω
2 x 22W typ./4Ω @ 14.4V, 1KHz, 10%
2 x 19W typ./4Ω @ 13.2V, 1KHz, 10%
2 x 28W typ./2Ω @ 14.4V, 1KHz, 10%
2 x 25W typ./2Ω @ 13.2V, 1KHz, 10%
LOW DISTORTION
LOW OUTPUT NOISE
ST-BY FUNCTION
MUTE FUNCTION
AUTO-MUTE AT MIN. SUPPLY VOLTAGE
DETECTION
LOW EXTERNAL COMPONENT COUNT
– INTERNALLY FIXED GAIN (32dB)
– NO EXTERNAL COMPENSATION
– NO BOOTSTRAP CAPACITORS
ADDITIONAL MONO INPUT
OUTPUT AC/DC SHORT CIRCUIT TO GND
AND TO VS
VERY INDUCTIVE LOADS
OVERRATING CHIP TEMPERATURE WITH
SOFT THERMAL LIMITER

Circuit Diagram:

2 x 32W DUAL BRIDGE CAR RADIO AMPLIFIER

Thursday, September 11, 2014

BUZ23 MOSFET Audio Amplifier 1 x 240W

BUZ23 MOSFET general description:

A high power audio amplifier circuit which can output up to 240W on a 4Ω speaker.

This mosfet amplifier is built with BUZ23 and uses a 40V symmetrical power supply. Connect the NTC close to the heatsinker.

BUZ23 MOSFET circuit diagram:

Monday, September 8, 2014

2 x 23 W high efficiency car radio power amplifier

FEATURES:

Low dissipation due to switching from Single-Ended (SE) to Bridge-Tied Load (BTL) mode

High Common Mode Rejection Ratio (CMRR)

Mute/standby/operating/SE-only (mode select pin)

Zero crossing mute and standby circuit

Load dump protection circuit

Short-circuit safe to ground, to supply voltage and across load

Loudspeaker protection circuit

Device switches to single-ended operation at excessive junction temperatures.

GENERAL DESCRIPTION:

The TDA1561Q is a monolithic power amplifier in a 13 lead single-in-line (SIL) plastic power package. It contains two identical 23 W amplifiers. The dissipation is minimized by switching from SE to BTL mode, only when a higher output voltage swing is needed. The device is primarily developed for car radio applications.

Circuit Diagram:

2 x 23 W high efficiency car radio power amplifier

Datasheet for TDA1561Q: Download

Saturday, September 6, 2014

TDA7490 Audio Amplifier 2 x 25W 1 x 50W

TDA7490general description:

The TDA7490 is a dual audio class D amplifier assembled in Flexiwatt 25 package; it is specially designed for high efficiency application mainly for TV and Home Stereo sets. TDA7490 Audio Amplifier 2 x 25W / 1 x 50W

TDA7490 features:

25W + 25W OUTPUT POWER:
RL = 8Ω/4Ω; THD = 10%
HIGH EFFICIENCY
WIDE SUPPLY VOLTAGE RANGE (FROM
±10 TO ±25V)
SPLIT SUPPLY
TURN OFF/ON POP FREE
ST-BY AND MUTE FEATURES
SHORT CIRCUIT PROTECTION ACROSS
THE LOAD
THERMAL OVERLOAD PROTECTION
EXTERNALLY SINCHRONIZABLE
BRIDGE CONFIGURATION

TDA7490 sterio circuit diagram:

TDA7490 Audio Amplifier 2 x 25W / 1 x 50W circuit diagram

TDA7490 mono circuit diagram:

TDA7490 Audio Amplifier 2 x 25W / 1 x 50W mono circuit diagram

TDA7490 sterio circuit pcb:

TDA 7490 pcb layout

4 x 50 W TDA7567

Features:

Multipower BCD technology

MOSFET output power stage

DMOS power output

Differential Input

New high efficiency (class SB)

High output power capability 4x28 W/4  @

14.4 V, 1 kHz, 10% THD, 4x50 W MAX power

Max. output power 4x72 W/2 

Full I2C bus driving:

Independent front/rear soft play/mute

Selectable gain 26 dB /16 dB (for low noise line output function)

High efficiency enable/disable

I2C bus digital diagnostics (including DC and AC load detection)

Operates both in I2C and non-I2C bus mode

Two selectable I2C bus addresses

Full fault protection

DC offset detection

Four independent short circuit protection

Clipping detector pin with selectable threshold (2 %/10 %)

Standby/mute pin

Linear thermal shutdown with multiple thermal warning

ESD protection

Description:

The TDA7567PD is a new BCD technology quad bridge power amplifier in PowerSO36 package specially intended for automotive applications.Thanks to the DMOS output stage the TDA7567PD has a very low distortion allowing a clear powerful sound. Among the features, its superior efficiency performance coming from the internal exclusive structure, makes it the most suitable device to simplify the thermal management in high power sets. The dissipated output power under average listening condition is in fact reduced up to 50 % when compared to the level provided by conventional class AB solutions. This device is equipped with a full diagnostics array that communicates the status of each speaker through the I2C bus.The I2C bus can be disabled and the device can be controlled by standby/mute pin.

Circuit Diagram

4 x 50 W TDA7567

Monday, August 18, 2014

2 x 6W CAR RADIO AMPLIFIER PLUS SOLID STATE SWITCH TDA7365

General Description

OUTPUT POWER 2x6W/4Ω @14.4V, 1KHz, 10%
SOLID STATE POWER SWITCH INCLUDED (1A @ VDROP = 0.8V Typ.)
MINIMUM EXTERNAL COMPONENT COUNT
- INTERNALLY FIXED GAIN (40dB)
- NO BOOTSTRAP CAPACITORS
- NO EXTERNAL COMPENSATION
ST-BY FUNCTION (CMOS COMPATIBLE)
MUTE FUNCTION (CMOS COMPATIBLE)
NO AUDIBLE POP DURING MUTE/ST-BY
OPERATIONS
LOW SUPPLY SELF MUTING
PROTECTIONS
AC AUDIO OUTPUTS SHORT CIRCUIT TO GND
DC AUDIO OUTPUTS SHORT CIRCUIT TO
GND AND TO VS AT POWER ON
SWITCH OUTPUT INTERNAL CURRENT LIMITATION
OVERRATING CHIP TEMPERATURE WITH
SOFT THERMAL LIMITER
LOAD DUMP
FORTUITOUS OPEN GND

Circuit diagram:

2 x 6W CAR RADIO AMPLIFIER PLUS SOLID STATE SWITCH

10 16 Volt Stereo 2 x 5 5 power amplifier

This amplifier circuit or with it based on ic KA2210 main amplifier, audio amplifier circuit should disupplay minimum of 10 Volt and up to 16 volts. Power output is 2 x 5.5 W stereo amplifier att. By using this amplifier you can listen to the strains of songs from mp3 player, iPod, etc.

This is schematic diagram

Part List

R1 = 4.7R

R2 = 4.7R

C1 = 1uF

C2 = 100uF

C3 = 47uF

C4 = 100uF

C5 = 0.1uF

C6 = 1000uF

C7 = 1uF

C8 = 100uF

C9 = 47uF

C10 = 100uF

C11 = 0.1uF

C12 = 1000uF

IC = KA2210