AmplifierCircuits

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 80+80W OUTPUT POWER @ RL = 4/8 Ω, THD = 0.5% 100+100W OUTPUT POWER @ RL = 4/8 Ω, THD = 10% HIGH DYNAMIC PREAMPLIFIER INPUT  STAGES  EXTERNAL PROGRAMMABLE FEEDBACK  TYPE COMPRESSORS  AC COUPLED INPUT TO CLASS AB BRIDGE  OUTPUT AMPLIFIER  PRECISION RECTIFIERS TO DRIVE THE  DIGITAL CONVERTER ON-OFF SEQUENCE/ TIMER WITH MUTE  AND STANDBY PROPORTIONAL OVER POWER OUTPUT  CURRENT TO LIMIT THE DIGITAL  CONVERTER ABSOLUTE POWER BRIDGE OUTPUT  TRANSISTOR POWER PROTECTION  ABSOLUTE OUTPUT CURRENT LIMIT INTEGRATED THERMAL PROTECTION POWER SUPPLY OVER VOLTAGE  PROTECTION  FLEXIWATT POWER PACKAGE WITH 27 PIN Circuit Diagram: 100+100W STEREO POWER AMPLIFIER

General Desciption: The TA2022 is a 90W (4 Ω ) continuous average per channel Class-T Digital Audio   Power Amplifier IC using Tripath’s pr oprietary Digital Power Processing (DPPT M )  technology. Class-T amplifiers offer bot h the audio fidelity of Class-AB and the  power efficiency of Class-D amplifiers. FEATURES: Class-T architecture  High Power  100W @ 4Ω, 1.0% THD+N  90W @ 4Ω, 0.1% THD+N 60W @ 8Ω, 0.1% THD+N  “Audiophile” Sound Quality  0.015% THD+N @ 70W 4Ω 0.015% THD+N @ 45W 8Ω 0.10% IHF-IM @ 25W 4Ω High Efficiency  92% @ 88W 8Ω 87% @ 125W 4Ω Dynamic Range = 102 dB  Mute Input  Integrated Gate Drive Supply  Over-current protection  Over and under-voltage protection  Single ended outputs  Outputs can be operated in bridged mode  32-pin SSIP package  Circuit Diagram: 2 x 100W stereo audio amplifier TA2022

Description of  TDA8920 : The TDA8920B is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 × 100 W. The device is available in the HSOP24 power package and in the DBS23P through-hole power package. The amplifier operates over a wide supply voltage range from ±12.5 V to ±30 V (±32 V non operating) and consumes a very low quiescent current. The TDA8920B is a two channel audio power amplifier using class-D technology. The audio input signal is converted into a digital pulse width modulated signal via an analog input stage and Pulse Width Modulation (PWM) modulator. To enable the output power transistors to be driven, this digital PWM signal is applied to a control and handshake block and driver circuits for both the high side and low side. In this way a level shift is performed from the low power digital PWM signal (at logic levels) to a high power PWM signal which switches...