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LM1875 AUDIO AMPLIFIER 20W

LM1875general description:

The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. The LM1875 delivers 20 watts into a 4Ω or 8Ω load on ±25V supplies. Using an 8Ω load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.

LM1875 amplifier circuit:LM1875 power supply diagram: LM1875 pcb layout: LM1875 project review

TDA8922 Audio Amplifier 2x25W

TDA8922general description:
The TDA8922 is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 × 25 W. The device is available in the HSOP24 power package with a small internal heatsink and in the DBS23P through-hole power package. Depending on the supply voltage and load conditions, a very small or even no external heatsink is required. The amplifier operates over a wide supply voltage range from ±12.5 to ±30 V and consumes a very low quiescent current.

TDA8922 features:
High efficiency (∼90%)Operating supply voltage from ±12.5 to ±30 VVery low quiescent currentLow distortionUsable as a stereo Single-Ended (SE) amplifier or as amono amplifier in Bridge-Tied Load (BTL)Fixed gain of 30 dB in Single-Ended (SE) and 36 dB inBridge-Tied Load (BTL)High output powerGood ripple rejectionInternal switching frequency can be overruled by an external clockNo switch-on or switch-off plop noiseShort-circuit proof across load and to supply linesElect…

TDA7490 Audio Amplifier 2x25W

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 features: 
25W + 25W OUTPUT POWER:RL = 8Ω/4Ω; THD = 10%HIGH EFFICIENCYWIDE SUPPLY VOLTAGE RANGE (FROM±10 TO ±25V)SPLIT SUPPLYTURN OFF/ON POP FREEST-BY AND MUTE FEATURESSHORT CIRCUIT PROTECTION ACROSSTHE LOADTHERMAL OVERLOAD PROTECTIONEXTERNALLY SINCHRONIZABLEBRIDGE CONFIGURATION
TDA7490 amplifier diagram, circuits:


TDA7490 layout, pcb:


TDA1562Q Audio Amplifier 50W

 TDA1562Qgeneral description: Philips designers have further improved a number of properties of the IC, among which the power output. According to the Philips datasheet, the improved device, the TDA1562Q, can deliver 70 watts into 4 ohms, but that is at the cost of the distortion, which at 10 per cent is rather too high, even for in a car. The prototype of the design described in this article provides 54 watts into 4 ohms at 1 per cent distortion. Since the number of requisite external components is smaller than in the case of the earlier device, the printed-circuit board is even more compact than that for the February 1995 amplifier.

 TDA1562Q features:
Low power dissipation during reproduction of music signalsProof against short-circuitsProtection against excessive temperaturesStandby switchNo power-on or power-off clicksVisible error indicationMeasurement results (at Ub=14.4 V)Supply voltage 8–18 VSensitivity 760 mV r.m.s.Input impedance 70 kΩPower output 54 W r.m.s. into 4 Ω (f=1 kHz…

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

TDA8932 Audio Amplifier 2x15 W

TDA8932general description: The TDA8932 is a high efficiency class-D amplifier with low power dissipation. The typical output power is 2 × 15 W in stereo half-bridge application (RL = 4 Ω) or 1 × 30 W typical in full-bridge application (RL = 8 Ω). Due to the low power dissipation the device can be used without any external heat sink when playing music. If proper cooling via the printed-circuit board is implemented, a continuous output power of 2 × 15 W is feasible. Due to the implementation of thermal foldback, even for high supply voltages and/or lower load impedances, the device remains operating with considerable music output power without the need for an external heat sink. The device has two full-differential inputs driving two independent outputs. It can be used as mono full-bridge configuration (BTL) or as stereo half-bridge configuration (SE).
TDA8932 features:
Operating voltage from 10 V to 36 V asymmetrical or ±5 V to ±18 V symmetricalMono-bridged tied load (full-bridge) or stereo…