AmplifierCircuits

TDA8950 g eneral description: The TDA8950 is a high-efficiency Class D audio power amplifier. The typical output power is 2 × 150 W with a speaker load impedance of 4 Ω. The TDA8950 is available in both HSOP24 and DBS23P power packages. The amplifier operates over a wide supply voltage range from ±12.5 V to ±40 V and features low quiescent current consumption.  TDA8950 Audio Amplifier 2x150W TDA8950 features: Pin compatible with TDA8920B for both HSOP24 and DBS23P packages Symmetrical operating supply voltage range from ±12.5 V to ±40 V Stereo full differential inputs, can be used as stereo Single-Ended (SE) or mono Bridge-Tied Load (BTL) amplifier High output power in typical applications: SE 2 × 150 W, RL 4 Ω (VP = ±37 V) SE 2 × 170 W, RL 4 Ω (VP = ±39 V) SE 2 × 100 W, RL 6 Ω (VP = ±37 V) BTL 1 × 300 W, RL 8 Ω (VP = ±37 V) Low noise Smooth pop noise-free start-up and switch off Zero dead time switching Fixed frequency Internal or external clock H...

Features 1 watt per channel with 8-ohm load Max. efficiency » 80% with 8-ohm load at 5 volts Filterless Digital gain control Build-in depop circuitry Error protection for short circuit and over-temperature Mute (shutdown) current < 1µA typical Low operating current (4mA at 5 volts without load) TSSOP 24L package available  General Description The AP130 is an oversampling class-D power amplifier for  stereo audio applications. It provides high power-efficiency for filterless 8-ohm load. Build-in depop, mute and gain control features simplify the applications. BTL (Bridge-Tied-Load) configuration delivers up to 1 watt into 8-ohm load per channel at 5-V supply voltage. It allows direct coupling of the power signal. Reliability is improved through over-temperature and short circuit protections. The class-D power amplifier enables high efficiency applications for portable devices. Circuit Diagram 1W Per Channel Stereo Class-D Audio Power Amplifier ...

Features: 18W OUTPUT POWER: RL = 8Ω/4Ω; THD = 10% HIGH EFFICIENCY WIDE SUPPLY VOLTAGE RANGE (UP TO ±25V) SPLIT SUPPLY OVERVOLTAGE PROTECTION ST-BY AND MUTE FEATURES SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION Circuit Diagram: 18W mono class-D Amplifier Datasheet for TDA7481:   Download

General Description:      The TDA8927 is the switching power stage of a two-chip set for a high efficiency class-D audio power amplifier system. The system is split into two chips:  • TDA8927J/ST/TH; a digital power stage in a DBS17P, RDBS17P or HSOP24 power package • TDA8929T; the analog controller chip in a SO24 package.      With this chip set a compact 2 × 80 W audio amplifier system can be built, operating with high efficiency and very low dissipation. No heatsink is required, or depending on supply voltage and load, a very small one. The system operates over a wide supply voltage range from ±15 up to ±30 V and consumes a very low quiescent current. Circuit Diagram: Circuit diagram for 2 x 80 W class-D audio amplifier

General Description: The TDA8928J is a switching power stage for a high  efficiency class-D audio power amplifier system.  With this power stage a compact 2 × 10 W self oscillating  digital amplifier system can be built, operating with high  efficiency and very low dissipation. No heatsink is required. The system operates over a wide supply voltage  range from ±7.5 V up to ±30 V and consumes a very low  quiescent current. Circuit Diagram: Power stage 2 x 10 or 1 x 20 W class-D audio amplifier Datasheet for TDA8928:   Download

General Description: The TDA8929T is the controller of a two-chip set for a high  efficiency class-D audio power amplifier system. The  system is divided into two chips: • TDA8929T; the analog controller chip in a SO24  package • TDA8926J/ST/TH or TDA8927J/ST/TH; a digital power  stage in a DBS17P, RDBS17P or HSOP24 power  package. With this chip set a compact 2 × 50 W or 2 × 100 W audio  amplifier system can be built, operating with high efficiency  and very low dissipation. No heatsink is required, or  depending on supply voltage and load, a very small one.  The system operates over a wide supply voltage range  from ±15 up to ±30 V and consumes a very low quiescent  current. Circuit Diagram: Controller class-D audio amplifier Datasheet for TDA8929T:   Download

Features: 2 W Into 3-Ω Speakers (THD+N< 0.4%)  < 0.08% THD+N at 1 W, 1 kHz, Into 4-Ω Load Extremely Efficient Third Generation 5-V  lass-D Technology: Low Supply Current (No Filter) . . . 8 mA Low Supply Current (Filter) . . . 15 mA Low Shutdown Current . . . 1 µA Low Noise Floor . . . 56 µVRMS Maximum Efficiency Into 3 Ω, 65-70% Maximum Efficiency Into 8 Ω, 75-85% 4 Internal Gain Settings . . . 8-23.5 dB PSRR . . . -77 dB Integrated Depop Circuitry Description: The TPA2000D2 is the third generation 5-V class-D amplifier from Texas Instruments. Improvements to previous generation devices include: lower supply current, lower noise floor, better efficiency, four different gain settings, smaller packaging, and fewer external components. The most significant advancement with this device is its modulation scheme that allows the amplifier to operate without the output filter. Eliminating the output filter saves the user approximately 30% in system cost an...

GENERAL DESCRIPTION: The AD199x is a two channel Bridge Tied Load (BTL)   switching audio power amplifier with integrated ∑∆ modulator.   The modulator accepts a 1Vrms input signal (maximum power)   and generates a switching waveform to drive speakers directly.   One of the two modulators can control both output stages   providing twice the current for single-channel applications. A digital, microcontroller-compatible interface provides control of  reset, mute and PGA gain as well as output signals for thermal  and over-current error conditions. The output stage can operate   from supply voltages ranging from 8V to 20V. The analog   modulator and digital logic operate from a 5V supply.  AD1990: 5Wx2 (10Wx1)  AD1992: 10Wx2 (20Wx1)  AD1994: 25Wx2 (50Wx1)  AD1996: 40Wx2 (80Wx1)  FEATURES: Integrated Stereo Modulator & Power Stage  0.005% THD+N  101.5dB Dynamic Range  PSRR >...

General description:      The SA58672 is a mono, filter-free class-D audio amplifier which is available in a 9 bump  WLCSP (Wafer Level Chip-Size Package) and 10-terminal HVSON packages.  The SA58672 features shutdown control. Improved immunity to noise and RF rectification  is increased by high PSRR and differential circuit topology. Fast start-up time and very  small WLCSP package makes it an ideal choice for both cellular handsets and PDAs.  The SA58672 delivers 1.7 W at 5 V and 800 mW at 3.6 V into 8 Ω. It delivers 3.0 W at 5 V  and 1.6 W at 3.6 V into 4 Ω. The maximum power efficiency is excellent at 90 % into 8 Ω  and 84 % to 88 % into 4 Ω. The SA58672 provides thermal and short-circuit shutdown  protection. Circuit Diagram: 3.0 W mono class-D audio amplifier

General description: The TDA8954 is a stereo or mono high-efficiency Class D audio power amplifier in a   single IC featuring low power dissipation. It is designed to deliver up to 2 × 210 W into a  4 Ω load in a stereo Single-Ended (SE) application, or 1 × 420 W into an 8 Ω load in a  mono Bridge-Tied Load (BTL) application.  It combines the benefits of Class D efficiency (≈93 % into a 4 Ω load) with audiophile  sound quality comparable to that associated with Class AB amplification.  The amplifier operates over a wide supply voltage range from ±12.5 V to ±42.5 V and   features low quiescent current consumption.  The TDA8954 is supplied with two diagnostic pins for monitoring the status of Thermal   Fold Back (TFB), Over Current Protection (OCP) and other protection circuits. Features: „ High output power in typical applications: ‹ SE 2 × 210 W, RL = 4 Ω (VDD = 41 V; VSS = −41 V) ‹ SE 2 × 235 W, RL = 3 Ω (VDD = 39 V; VSS = −3...

FEATURES Class D/1-Bit Audio Power Output Stage 5 V Analog and Digital Supply Voltages Power Stage Power Supply 8 V to 20 V Output Power @ 0.1% THD + N Stereo Mode 2 20 W @ 4  @ 14.4 V 2 20 W @ 8  @ 20 V Mono Mode 1 40 W @ 4  @ 20 V RON < 320 m (per Transistor) Efficiency > 85% @ Full Power/8  Clickless Mute Function Turn-On and Turn-Off Pop Suppression Short-Circuit Protection Overtemperature Protection Data Loss Protection 2-Channel BTL Outputs or 4-Channel Single-Ended Outputs 52-Lead Exposed Pad TQFP Package Low Cost DMOS Process APPLICATIONS: PC Audio Systems Minicomponents Automotive Amplifiers Home Theater Systems Televisions GENERAL DESCRIPTION: The AD1991 is a 2-channel BTL or 4-channel single-ended  class D audio power output stage. The part is configured during  reset to be in either 2-channel mode or 4-channel mode.  To protect the IC as well as the connected speakers, the AD1991  pr...

FEATURES: High efficiency (∼90 %) Operating voltage from ±12.5 V to ±30 V Very low quiescent current Low distortion Usable as a stereo Single-Ended (SE) amplifier or as a mono amplifier in Bridge-Tied Load (BTL) Fixed gain of 28 dB in SE and 34 dB in BTL High output power Good ripple rejection Internal switching frequency can be overruled by an external clock No switch-on or switch-off plop noise Short-circuit proof across the load and to the supply lines Electrostatic discharge protection Thermally protected. APPLICATIONS: Television sets Home-sound sets Multimedia systems All mains fed audio systems Car audio (boosters). GENERAL DESCRIPTION: The TDA8924 is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 × 120 W. The device comes in a HSOP24 power package with a small internal heatsink. Depending on supply voltage and load conditions a very small or even no external heatsink ...

Sourse: Download

General description The TDA8932B is a high efficiency class-D amplifier with low power dissipation.  The continuous time output power is 2 × 15 W in stereo half-bridge application (RL = 4 Ω)  or 1 × 30 W in mono 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. Due to the  implementation of thermal foldback, even for high supply voltages and/or lower load  impedances, the device continues to operate 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  in a mono full-bridge configuration (BTL) or in a stereo half-bridge configuration (SE). Features Operating voltage from 10 V to 36 V asymmetrical or ±5 V to ±18 V symmetrical Mono-bridged tied load (full-bridge) or stereo single-ended (half-bridge) application Applicat...

General description The TDA8931 is a switching power stage for high efficiency class-D audio power amplifier  systems.  It contains a Single-Ended (SE) power stage, drive logic, protection control logic, a full  differential input comparator and a HVP charger to charge the SE capacitor. With this  amplifier a compact 1 × 20 W closed loop self-oscillating digital amplifier system can be  built. The TDA8931 has a high efficiency so that a heat sink is not required up to  20 W (RMS). The system operates on an asymmetrical and a symmetrical supply voltage. Features High efficiency Operating voltage asymmetrical from 12 V to 35 V Operating voltage symmetrical from ±6 V to ±17.5 V Thermally protected No heat sink required Charger for single-ended capacitor No pop sound Applications Flat panel television sets Flat panel monitors Multimedia systems Wireless speakers Micro systems Circuit Diagram 20W power amplifier TDA893...

Circuit diagram:  2 x 80 W class-D audio amplifier circuit diagram

TDA8926J circuit diagram for  2 x 50 W class-D audio amplifier

FEATURES: High efficiency (> 94 %) Operating voltage from ±7.5 V to ±30 V Very low quiescent current High output power Diagnostic output Usable as a stereo Single-Ended (SE) amplifier Electrostatic discharge protection (pin to pin) No heatsink required. APPLICATIONS: Television sets Home-sound sets Multimedia systems All mains fed audio systems. GENERAL DESCRIPTION: The TDA8925 is a switching power stage for a high  efficiency class-D audio power amplifier system.  With this power stage a compact 2 × 15 W self oscillating  digital amplifier system can be built, operating with high  efficiency and very low dissipation. No heatsink is  required. The system operates over a wide supply voltage  range from ±7.5 V up to ±30 V and consumes a very low  quiescent current. Circuit Diagram: Circuit diagram for Power stage 2 x 15 to 25 W class-D

Features: 18W OUTPUT POWER: RL = 8Ω/4Ω; THD = 10% HIGH EFFICIENCY WIDE SUPPLY VOLTAGE RANGE (UP TO  ±25V) SPLIT SUPPLY OVERVOLTAGE PROTECTION ST-BY AND MUTE FEATURES SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION Circuit Diagram: Circuit diagram for 18W MONO CLASS-D AMPLIFIER

General Description: The TDA7480 is an audio class-D amplifier asempled in power dip package specially designed for high efficientcy applications mainly for TV and Home stereo sets. Circuit Diagram: Circuit diagram for 10W MONO CLASS-D AMPLIFIER