AmplifierCircuits

General Description: The TDA8576T is a two channel class-H high-output  voltage line driver for use in car audio applications.  The line driver operates as a non-inverting amplifier with a  gain of 6 dB and a single-ended output. Due to the class-H  voltage lifting principle the voltage swing over the load is  more than the supply voltage.  With a supply voltage of 9 V the output voltage swing over  the load will be more than 14 V (peak-to-peak).  The TDA8576T is available in a SO16 package.  Line drivers are necessary in car audio systems in which  the power amplifiers are driven by long cables.  The signal-to-noise ratio of these car audio systems is  improved by using the TDA8576T class-H high-output  level line driver. The high-output level of TDA8576T  enables a reduction of the gain of the power amplifier  resulting in an improvement of the power amplifier  performance. Circuit Diagram: Class-...

General Description: The IC incorporates the following functions: 4 × 6 W SE amplifies without SE capacitor, because of the availability of 2 half supply voltage power buffers. 2. 2 × 20 W BTL amplifiers. Automatic switching between 2 and 4 speaker operation. The mode of operation is determined during start-up. This amplifier is protected for all general short-circuit conditions to battery or ground, overvoltage, 45 V load dump and short-circuits on the speaker outputs. The IC is contained in a 20-pin power HSOP package, but is also available in a 17-pin SIL power package. When packaged in the 20-pin HSOP package additional functions are available: DDD level selection between 2 and 10% Overrule pin for changing mode of operation (from SE to BTL or from BTL to SE). Circuit Diagram: 2 x 20 W BTL amplifiers Datasheet for TDA8586: 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

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. Circuit Diagram: Circuit Diagram for TDA8931 Power comparator 1 × 20 W Datasheet for TDA8931:   Download

General Description: The TDA8943SF is a single-channel audio power amplifier with an output power of 6 W at an 8 Ω load and a 12 V supply. The circuit contains a Bridge Tied Load (BTL) amplifier with an all-NPN output stage and standby/mute logic. The TDA8943SF comes in a 9-lead single in-line (SIL) medium power package. The TDA8943SF is printed-circuit board (PCB) compatible with all other types in the TDA894x family. One PCB footprint accommodates both the mono and the stereo products. Circuit diagram: 6 W mono Bridge Tied Load Datasheet for TDA8943:   Download

General Description: The TDA8944J is a dual-channel audio power amplifier with an output power of 2 × 7 W at an 8 Ω load and a 12 V supply. The circuit contains two Bridge Tied Load (BTL) amplifiers with an all-NPN output stage and standby/mute logic. The TDA8944J comes in a 17-pin DIL-bent-SIL (DBS) power package. The TDA8944J is printed-circuit board (PCB) compatible with all other types in the TDA894x family. One PCB footprint accommodates both the mono and the stereo products. Circuit Diagram: Circuit diagram Datasheet for TDA8944:   Download

General description: The TDA8946J is a dual-channel audio power amplifier with an output power of 2 × 15 W at an 8 Ω load and a 18 V supply. The circuit contains two Bridge Tied Load (BTL) amplifiers with an all-NPN output stage and standby/mute logic. The TDA8946J comes in a 17-pin DIL-bent-SIL (DBS) power package. The TDA8946J is printed-circuit board (PCB) compatible with all other types in the TDA894x family. One PCB footprint accommodates both the mono and the stereo products. Features: Few external components Fixed gain Standby and mute mode No on/off switching plops Low standby current High supply voltage ripple rejection Outputs short-circuit protected to ground, supply and across the load Thermally protected Printed-circuit board compatible Circuit Diagram: Circuit Diagram for 2 x 15 W stereo Bridge Tied Load (BTL) audio amplifier PCB layout: PCB layout TDA8946 Datasheet for TDA8946J:   Download

General Description: The TDA9610H is a dual audio FM processing IC for VHS hi-fi audio, digitally controlled via the I2C-bus. The FM (de)modulator and peak noise reduction functions are highly integrated, resulting in few external components and adjustments.  In addition special functions for audio editing, mixing and dubbing have been implemented.  Circuit Diagram: Audio FM processor for VHS hi-fi audio Datasheet for TDA9610H:   Download

General Description: The TDA9821 is a monolithic, integrated, TV FM intercarrier sound demodulator for all FM standards. The circuit contains two separate FM demodulators using Phase Locked Loop (PLL) reference frequency generation. The circuit requires a minimum number of  external components. Circuit Diagram: Dual channel TV FM intercarrier sound demodulator Datasheet for TDA9821:   Download

General Description: The TDA9830, a monolithic integrated circuit, is designed for AM-sound demodulation used in L- and L’-standard. The IC provides an audio source selector and also mute switch. Circuit Diagram: AM-demodulator and audio source switch Datasheet for TDA9830:   Download

General Description: The TDA9847 is a stereo/dual sound processor for TV and VTR sets. Its identification ensures safe operation by using internal digital PLL technique with extremely small bandwidth, synchronous detection and digital integration (switching time maximum 2.0 s; identification concerning the main functions). Circuit Diagram: TV and VTR stereo/dual sound processor with digital identification Datasheet for TDA9847:   Download

The TDA9852 is a bipolar-integrated BTSC stereo decoder with hi-fi audio processor (I2C-bus controlled) for application in TV sets, VCRs and multimedia. Circuit Diagram: SAP decoder and audio processor

The TDA9853H is a bipolar-integrated BTSC stereo decoder and audio processor for application in TV sets, VCRs and multimedia PCs. Circuit Diagram: Circuit diagram for Stereo Decoder and Audio Processor TDA9853H

General Description: The TDA9861 provides control facilities for the main, the headphone and the SCART channel of a TV set. Due to extended switching possibilities, signals from 3 stereo sources can be handled. Circuit Diagram: Circuit Diagram Universal HiFi audio processor for TV

General Description: The TDA9873H is an economic multistandard dual FM demodulator and analog carrier stereo decoder with I2C-bus control. Circuit Diagram: Stereo Sound Decoder Datasheet for TDA9873:   Download

 FEATURES • Sound IF (SIF) input switch • SIF AGC with 24 dB control range • Switchable 10 dB SIF input attenuator • SIF 8-bit Analog-to-Digital Converter (ADC) • Easy TV standard programming option • Differential Quadrature Phase Shift Keying (DQPSK) demodulation for different standards, simultaneously with 1-channel FM demodulation • NICAM decoding (B/G, D/K, I and L standard) • 2-carrier multi-standard FM demodulation (B/G, D/K and M standard) • Single carrier high deviation FM mono demodulation mode • Decoding for three analog multi-channel systems (A2) and satellite sound • Adaptive de-emphasis for satellite • Programmable identification (B/G, D/K and M standard) and different identification times • FM pilot carrier presence detector • Optional AM demodulation for system L, simultaneously with NICAM • Monitor selection for FM/AM demodulator outputs and FM and NICAM signals with peak option • Automatic FM dematrixing option • Digital crossbar switch • I2S-bus...

GENERAL DESCRIPTION: The TDA9875 is a single-chip Digital TV Sound Processor (DTVSP) for analog and digital multi-channel sound systems in TV sets and satellite receivers. Circuit Diagram: TDA9875 Digital TV Sound Processor Datasheet for TDA9875:   Download

GENERAL DESCRIPTION The TDA9880(T) is an integrated circuit for multistandard vision IF signal processing and FM demodulation in TV and VTR sets. Circuit Diagram: FM sound IF-PLL demodulator Datasheet for TDA9880:   Download

FEATURES: • 5 V supply voltage • Gain controlled wide-band Vision Intermediate  Frequency (VIF) amplifier, AC-coupled • Multistandard true synchronous demodulation with  active carrier regeneration: very linear demodulation,  good intermodulation figures, reduced harmonics, and  excellent pulse response • Gated phase detector for L and L-accent standard • Fully integrated VIF Voltage Controlled Oscillator  (VCO), alignment-free, frequencies switchable for all  negative and positive modulated standards via I2C-bus • Digital acquisition help, VIF frequencies of 33.4, 33.9,  38.0, 38.9, 45.75, and 58.75 MHz • 4 MHz reference frequency input: signal from  Phase-Locked Loop (PLL) tuning system or operating  as crystal oscillator • VIF Automatic Gain Control (AGC) detector for gain  control, operating as peak sync detector for negative  modulated signals and as a peak white detector for  positive modulated signals ...

GENERAL DESCRIPTION: The TDA1001B is a monolithic integrated circuit for suppressing interference and noise in FM mono and stereo receivers. Features: • Active low-pass and high-pass filters • Interference pulse detector with adjustable and controllable response sensitivity • Noise detector designed for FM i.f. amplifiers with ratio detectors or quadrature detectors • Schmitt trigger for generating an interference suppression pulse • Active pilot tone generation (19 kHz) • Internal voltage stabilization Circuit Diagram: Interference and noise suppression circuit for FM receivers TDA1001B Datasheet for TDA1001B:   Download

FEATURES: • Monolithic integrated 5-band stereo equalizer circuit • Five filters for each channel • Centre frequency, bandwidth and maximum boost/cut defined by external components • Choise for variable or constant Q-factor via I2C software • Defeat mode • All stages are DC-coupled • I2C-bus control for all functions • Two different modul addresses programmable. GENERAL DESCRIPTION: The 5-band stereo equalizer is an 12C-bus controlled tone processor for application in car radio sets, TV sets and music centres. It offers the possibility of sound control as well as equalization of sound pressure behaviour of different rooms or loudspeakers, especially in cars. Circuit diagram: 5-band stereo equalizer circuit Datasheet for TEA6360:   Download

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Power Supply Voltage, VCC - 18V Power Dissipation (TC = +75°C), PD - 4.5W Operating Temperature Range, Topr  −20° to +75°C Storage Temperature Range, Tstg   −55° to +125°C

DESCRIPTION: The EUA5202 is a stereo audio power amplifier that  delivering 2W of continuous RMS power per channel   into 3-Ω loads. When driving 1W into 8-Ω speakers, the   EUA5202 has less than 0.04% THD+N across its   specified frequency range. Included within this device is  integrated de-pop circuitry that virtually eliminates   transients that cause noise in the speakers.   Amplifier gain is externally configured by means of two   resistors per input channel and does not require external   compensation for settings of 2 to 20 in BTL mode (1 to   10 in SE mode). An internal input MUX allows two sets   of stereo inputs to the amplifier. In notebook   applications, where internal speakers are driven as BTL   and the line (often headphone drive) outputs are required   to be SE, the EUA5202 automatically switches into SE   mode when the SE/BTL inputs is activated. Consume   only 7mA of supply current ...

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...

Dual Low Noise Preamplifier

Circuit Diagram: DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS Datasheet for TDA7313: Download  

Description: The integrated circuit TDA1083 includes, with exception  of the FM front end, a complete AM-/FM-radio-circuit  with audio power amplifier. An internal Z-diode  stabilizes the supply voltage at VS 13 V, which allows  with the aid of a resistor and a rectifier, the circuit to be  driven by a higher external supply voltage. Features: Large supply voltage range VS = 3 to 12 V High AM-Sensitivity Limiting threshold voltage Vi = 50 V Audio output power P0 = 0.7 W AFC-connection for VHF-tuner AM-FM switching without high frequency voltages Applications: AM-/FM- and audio-amplifier Circuit Diagram: Circuit diagram for One Chip AM/FM Radio with Audio Power Amplifier Datasheet for TDA1083:   Download

Circuit Diagram: CIRCUIT DIAGRAM FOR 5W AUDIO AMPLIFIER WITH MUTING Datasheet for TDA1905: Download

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...

Circuit Diagram: Circuit Diagram High Gain, Low Noise Amplifier DataSheet for SMA428A:

Circuit Diagram: Tone control and surround digitally controlled audio processor with AGC Datasheet for TDA7443:   Download

Circuit Diagram: CIRCUIT DIAGRAM FOR RF FRONT-END FOR DIGITAL RADIO Datasheet for STA001:   Download

Circuit Diagram: Circuit diagram for dual audioprocessor with compander and subwoofer output Datasheet for TDA7462D:   Download

General Description: The TDA 7511 is a high performance tuner circuit for AM/FM car radio. It contains mixers, IF amplifiers, demodulators for AM and FM, quality detection, ISS filter and PLL synthesizer with IF counter on a single chip. Circuit Diagram: CIRCUIT DIAGRAM AM/FM TUNER FOR CAR RADIO AND HIFI APPLICATIONS Datasheet for TDA7511:   Download

Features: Low voltage noise: 4.5 nV/√Hz High gain bandwidth product: 15 MHz High slew rate: 7 V/µs Low distortion: 0.002% Excellent frequency stability ESD protection 2 kV General Description: The LM833 is a monolithic dual operational  amplifier particularly well-suited to audio applications.  It offers low voltage noise (4.5 nV/√Hz) and high   frequency performances (15 MHz gain bandwidth   product, 7 V/µs slew rate).  In addition, the LM833 has a very low distortion   (0.002%) and excellent phase/gain margins. Circuit Diagram: Low noise dual operational amplifier Datasheet for LM833:   Download

General Description: The TDA7430/TDA7431 is volume tone (bass middle and treble) balance (Left/Right) processors voice canceller for quality audio applications in car radio and Hi-Fi systems. The reproduce surround sound by using programmable phase shifters and a signal matrix. Control of all functions is accomplished by serial bus. The AC signal setting is botained by resisstor networks and switches combined with operational amplifiers.  Circuit Diagram: Circuit diagram for Digitally controlled audio processor with surround sound matrix and voice canceller Datasheet for TDA7430:   Download