Audio power IC for mp3 Player

Overview:

The AN12941A is an amplifier IC for stereo speakers which can output 1 W by 8 Ω or 2 W by 4 Ω. The AGC circuit is built-in to prevent the resonance or the vibration by the speaker's energy and the clipping distortion what is called "broken up sound." of the speakers. Also, to reduce power consumption, AN12941A has a built-in function which automatically detects the input signal and can automatically enter power save mode when there is no signal.

Features:

Speaker amplifier is
1 W × 2-channel: 8 Ω, VCC = 5 V or
2 W × 2-channel: 4 Ω, VCC = 5 V
Built-in AGC circuit
Prevention of the resonance or the vibration by
the speaker's energy and the clipping distortion
of the speaker by AGC at excessive input signal
(with AGC on/off switch).
Built-in automatic power saving function
It detects input signals and switches on/off (with
the on/off switch for the automatic power saving).
Operating supply voltage: VCC 3.0 V to 5.5 V/
VCC_SP 3.0 V to 5.5 V

Circuit Diagram:

Audio power IC for mp3 Player

Comments

OP AMP INTEGRATOR CALCULATOR

Enter the Input Voltage,Vin: Volts Enter the Frequency, f: Hertz Enter the Input Resistance, Rin: Ohms Enter the Value of Capacitor, C: Farads Output Voltage, Vout: Volts OP AMP based Integrator Tutorial and Design

Using the TLP250 Isolated MOSFET Driver Explanation and Example Circuits

I’ve already shown how to drive an N-channel MOSFET (or even an IGBT) in both high-side and low-side configurations in a multitude of ways. I’ve also explained the principles of driving the MOSFETs in these configurations. The dedicated drivers I’ve shown so far are the TC427 and IR2110. Some people have requested me to write up on MOSFET drive using the very popular TLP250. And I’ll explain that here. The TLP250, like any driver, has an input stage, an output stage and a power supply connection. What’s special about the TLP250 is that the TLP250 is an optically isolated driver, meaning that the input and output are “optically isolated”. The isolation is optical – the input stage is an LED and the receiving output stage is light sensitive (think “photodetector”). Before delving any further, let’s look at the pin configuration and the truth table. Fig. 1 - TLP250 Pin Configuration Fig. 2 - TLP250 Truth Table Fig. 1 clearly shows the input LED side and the receiving photodetector as well

MICROLAB A6331 – MICROLAB A6612 – HTS Circuit Diagram 4558 – TDA7377 – TC4053 – TDA2030A

Schematic: Microlab A6612 and Microlab A6331 Home Theater system . Used ICs: 4558 – TDA7377 – TC4053 – TDA2030A A6331 - Circuit Diagram A6612 Circuit Diagram Click on the schematics to magnify

Do More

Search This Blog