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Showing posts with the label ClassAB

4 x 45 W quad bridge car radio amplifier

Features:
High output power capability: 4 x 45 W / 4  max. 4 x 26 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 TDA7388 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 TDA7388 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced boundary components count allows very compact sets.

MUTE and ST-BY utilization:


Ciruit Diagram: Datasheet for TDA7388:Download

Dual bridge audio amplifier for car radio

Features: Minimum external component count No bootstrap capacitors No Boucherot cells Clip detector output High output power Fixed gain Very low stand-by current (1 µA typ) No switch on/off noise
Description The TDA7374 is a class AB audio dual bridge power amplifier in Multiwatt package designed for car radio applications. Thanks to the fully complementary PNP/NPN  output configuration the high power performances  of the TDA7374 are obtained without bootstrap  capacitors.
Circuit Diagram:

25 W + 25 W stereo amplifier with mute and standby

Features: „ Wide supply voltage range (up to ±22.5 V)„ Split supply„ High output power 25 W + 25 W into 8 Ω with VS = ±20 V and THD = 10%„ No “pop” at turn on/off „ Mute (“pop”-free) „ Standby feature (low Iq) „ Few external components„ Short-circuit protection „ Thermal overload protection
Description: The TDA7264 is class-AB dual audio power  amplifier assembled in a Multiwatt package. It is specially designed for high-quality sound applications such as hi-fi music centers and  stereo TV sets.
Circuit Diagram: Datasheet for TDA7264:Download

14 + 14W STEREO AMPLIFIER WITH MUTE & ST-BY

Features

WIDE SUPPLY VOLTAGE RANGE UP TO
±20V
SPLIT SUPPLY
HIGH OUTPUT POWER
14 + 14W @ THD =10%, RL = 8Ω, VS = +16V
NO POP AT TURN-ON/OFF
MUTE (POP FREE)
STAND-BY FEATURE (LOW Iq)
SHORT CIRCUIT PROTECTION TO GND
THERMAL OVERLOAD PROTECTION

Circuit Diagram:


12 +12W STEREO AMPLIFIER WITH MUTING

25W MONO AMPLIFIER WITH MUTE/ST-BY

Features: WIDE SUPPLY VOLTAGE RANGE (UP TO50V ABS MAX.)SPLIT SUPPLYHIGH OUTPUT POWER:25W @ THD =10%, RL = 8Ω, VS = +20VNO POP AT TURN-ON/OFFMUTE (POP FREE)STAND-BY FEATURE (LOW IQ)FEW EXTERNAL COMPONENTSSHORT CIRCUIT PROTECTIONTHERMAL OVERLOAD PROTECTION

DESCRIPTION:
The TDA7261 is class AB Audio power amplifier assembled in the Multiwatt package, specially de- signed for high quality sound application in mono TV chassis.
Circuit Diagram:

2x40W Two-Channel Class AB Audio Power Amplifier IC

Overview
The STK402-000 series products are audio power amplifier hybrid ICs that consist of optimally-designed discrete component power amplifier circuits that have been miniaturized using SANYO's unique insulated metal substrate technology (IMST). SANYO has adopted a new low thermal resistance substrate in these products to reduce the package size by about 60% as compared to the earlier SANYO STK407-000 series.
Circuit Diagram

2x110W AF power amplifier class AB 2 channels

Circuit Diagram:

2x110W Power Amplifier Class AB

Circuit diagram:

3x150W Audio Power Amplifier IC Class AB

General Description
The STK433-330N-E is a hybrid IC designed to be used in 150 3 ch class AB audio power amplifier

Circuit Diagram
Layout:
PCB:

6x30W Six-Channel Class AB Audio Power Amplifier IC

General Description
The STK403-400 series products are audio power amplifier hybrid ICs that consist of optimally designed discrete componet power amplifier circuits that have been miniaturized using Sanyo's unique insulated metal substrate technology. The adoption of a newly developed low thermal resisten substrate allows this product to integrate six power amplifier channels in a single compact package.
Circuit Diagram Datasheet for STK403-400: Download

TDA1308 Class-AB stereo headphone driver

General description:
The TDA1308 is an integrated class-AB stereo headphone driver contained in an SO8 or  a TSSOP8 plastic package. The device is fabricated in a 1 μm Complementary Metal  Oxide Semiconductor (CMOS) process and has been primarily developed for portable digital audio applications.
Features and benefits:
Wide temperature rangeNo switch ON/OFF clicksExcellent power supply ripple rejectionLow power consumptionShort-circuit resistantHigh performanceHigh signal-to-noise ratioHigh slew rateLow distortionLarge output voltage swingCircuit diagram:

Triple amplifier circuit TDA7497

Amplifier Description

The TDA7497 is a triple 10+10+10W/15W class AB power amplifier assembled in the @ Multiwatt 15 package, specially designed for high quality sound, TV applications. Features of the TDA7497 include mute functions, independently controller for main and center channels.
Circuit Diagram
Datasheet for TDA7497: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