AmplifierCircuits

General Description for TDA2616Q:   The TDA2616 and TDA2616Q are dual power amplifiers. The TDA2616 is supplied in a 9-lead single-n-line (SIL9) plastic power package (SOT131), while the TDA2616Q is supplied in a 9-lead SIL-bent-to-DIL plastic power package (SOT157). They have been especially designed for mains fed pplications, such as stereo radio and stereo TV. Features: • Requires very few external components • No switch-on/switch-off clicks • Input mute during switch-on and switch-off • Low offset voltage between output and ground • Excellent gain balance of both amplifiers • Hi-fi in accordance with IEC 268 and DIN 45500 • Short-circuit proof and thermal protected • Mute possibility Circuit diagram for TDA2616: 2x12 W hi-fi audio power amplifiers with mute TDA2616 Datasheet for TDA2616:   Download

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 AND STANDBY OPERATIONS MUTING TTL COMPATIBLE VERY LOW STANDBY CONSUMPTION PROGRAMMABLE TURN ON DELAY DIFFERENTIAL INPUT SHORT CIRCUIT PROTECTIONS: RL SHORT - OUT TO GROUND - OUT TO VS OTHER PROTECTIONS: Load dump voltage surge LoudspeakerDC current Very inductive load Overrating temperature Open ground Circuit diagram for TDA7256: 30W bridge car radio amplifier TDA7256 circuit diagram   PCB and layout for TDA7256: 30W bridge car radio amplifier TDA7256 pcb    PCB and layout for TDA7256:   Download

Bandpass Dual Chamber Basic Theory: The front and rear of the driver are mounted in separate enclosures and tuned to specific calculated values. Resultant output is suppose to be better than any of the other designs mentioned previously. Bose owns the rights to the exact details behind this design. They explain the theory like this, "The low-frequency speaker drivers are located between separate acoustic compression chambers inside a patented Bose Acoustimass module. As each speaker cone moves, it excites air in the chambers. Trapped in the chamber, this air acts as an acoustic spring, which interacts with the air in the port to produce more low-frequency sound with less power. The system is more efficient and requires less cone motion, which in turn produces less distortion. In the event that any otherwise audible distortion is produced, the patented design traps it inside the acoustic chambers -- so it never enters the room. The result is an Acoustimass module with no ...

Order Vented Basic Theory: Also known as bass-reflex, ported or vented. The driver is mounted into an enclosure which houses a large opening, port, vent or slot that extends into the cabinet a specified length. The length and area of this vent are extremely critical to the proper function of a 4th order enclosure. The port and driver contribute together to provide the desired response characteristic. The driver is generally mounted with the front facing outwards, but is not restricted to this method only. The vent which extends into the cabinet tunes the enclosure to a specific frequency (known as fB) thereby acting as a high pass filter on the driver. Driver excursion is at its minimum at fB where the vent then takes over and provides most of the output. Cut-off rate below fB is 24 dB/octave but can be varied up or down 5-6 dB depending upon the exact tuning frequency and volume of the enclosure. There are various types of alignments that all fit into the ported 4th o...

Order Acoustic Suspension Basic Theory: The driver is mounted in a sealed, airtight enclosure, generally with the front of the driver facing outward but is not restricted to this method only. The volume of the enclosure is chosen to achieve a desired system Q which defines the response characteristics of the driver and enclosure. Q values may range between the 0.5 and 1.5 - with 0.5 being overdamped, 1.5 being underdamped, and 0.7 being critically damped or flat. The total system Q (also known as Qtc) is dependent on 3 things: the volume of enclosure, the T/S parameters of driver and internal treatment compounds. A a general rule only, sealed enclosures may be best suited for drivers with an EBP (Efficiency Bandwidth Product) of 50.0 or lower and drivers with Qts values above 0.40 but is not restricted to these exact values. EBP is calculated by taking the the fs of the driver and dividing it by the Qes - therefore EBP = fs/Qes. The cutoff rate is typically 12 dB/octav...

General Description  Subwoofer Amplifier TDA7295 : The 80W Subwoofer Amplifier TDA7295 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Sterio, self powered loudspeakers, Top-class TV). Thanks to the wide voltage range and to the high uot current capability it is able to suply the highest power into both 4 Ohm and 8 Ohm loads even in presence of poor supply regulation, with high Supply Voltage Rejection. The Built in muting function with turn on delay simplifies the remote opeeration avoiding switching on-off noises. Features of TDA7295: Very high operating voltage range (+-40V) Dmos Power Stage Very low distortion Very low noise Circuit diagram for TDA7295: 80W Subwoofer Amplifier TDA7295 Layout and pcb for TDA7295: TDA7295 pcb layout Datasheet for TDA7295:   Download

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 components High output power Low output offset voltage (BTL channel) Fixed gain Diagnostic facility (distortion, short-circuit and temperature detection) Good ripple rejection Mode select switch (operating, mute and standby) AC and DC short-circuit safe to ground and to VP Low power dissipation in any short-circuit condition Thermally protected Reverse polarity safe Electrostatic discharge protection No switch-on/switch-off plop Flexible leads Low thermal resistance Identical inputs (inverting and non-inverting).. Circuit diagram for TDA8...