60W MOSFET Audio Amplifier

General Description:

• MPSA43 – NPN high voltage transistor with low current and high voltage used for telephony, professional communication equipment, and telephony, and is the complement type of MPSA93
• MJE350 – a plastic medium power PNP silicon transistor designed for use in line-operated applications such as low power, line-operated series pass and switching regulators requiring PNP capability with features of high collector-emitter sustaining voltage, excellent DC current gain, and plastic thermopad package
• IRFP240 – an N-channel enhancement mode silicon gate power field effect transistor with an advanced power MOSFET designed, tested, and guaranteed to withstand a specified level of energy in the breakdown avalanche mode of operation used in applications such as switching regulators, switching converters, motor drivers, relay drivers, and drivers for high power bipolar switching transistors requiring high speed and low gat drive power due to features of high input impedance, linear transfer characteristics, nanosecond switching speeds, limited power dissipation, and single pulse avalanche energy rated

     The 60W MOSFET audio amplifier may be used in automotive sound systems, home theater entertainment systems, and audio-video receivers to continually improve the quality of the audio. redcircuits.com/Page100.htm

Circuit Diagram:

60W MOSFET Audio Amplifier

3.0 W mono class-D audio amplifier

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

2x2.2 W BTL audio amplifier

General description:

The SA58632 is a two-channel audio amplifier in an HVQFN20 package. It provides  power output of 2.2 W per channel with an 8 Ω load at 9 V supply. The internal circuit is  comprised of two BTL (Bridge-Tied Load) amplifiers with a complementary PNP-NPN  output stage and standby/mute logic. The SA58632 is housed in a 20-pin HVQFN  package, which has an exposed die attach paddle enabling reduced thermal resistance and increased power dissipation.

Circuit Diagram:

Circuit Diagram

3 W BTL audio amplifier

General description:

The SA58631 is a one channel audio amplifier in an HVSON8 package. It provides power output of 3 W with an 8 Ω load at 9 V supply. The internal circuit is comprised of a BTL (Bridge Tied Load) amplifier with a complementary PNP-NPN output stage and standby/mute logic. The SA58631 is housed in an 8-pin HVSON package which has an exposed die attach paddle enabling reduced thermal resistance and increased power dissipation.

Circuit Diagram:

3 W BTL audio amplifier

PCB layout:

Pcb layout 3 W BTL audio amplifier

Audio Circuit Diagram 4x50W TDA8594

General description:

The TDA8594 is a complementary quad Bridge Tied Load (BTL) audio power amplifier made in BCDMOS technology. It contains four independent amplifiers in BTL configuration. Through the I2C-bus, diagnosis of temperature warning and clipping level is fully programmable and the information available via two diagnostic pins is selectable. The status of each amplifier (output offset, load or no load, short-circuit or speaker incorrectly connected) can be read separately.

Features and benefits:

• Operates in legacy mode (non I2C-bus) and I2C-bus mode (3.3 V and 5 V compliant)
• Three hardware-programmable I2C-bus addresses
• Drives 4  or 2  loads
• Speaker fault detection
• Independent short-circuit protection per channel
• Loss of ground and open VP safe (with 200 m series impedance and a supply  decoupling capacitor of 2200 F maximum)
• All outputs short-circuit proof to ground, supply voltage and across the load
• All pins short-circuit proof to ground
• Temperature-controlled gain reduction to prevent audio holes at high junction  temperatures
• Low battery voltage detection
• Offset detection
• This part has been qualified in accordance with AEC-Q100

Circuit Diagram:

Audio Circuit Diagram 4x50W TDA8594

4 x 45W Audio Power Amplifier

General description:

The TDA8595 is a complementary quad Bridge Tied Load (BTL) audio power amplifier made in BCDMOS technology. It contains four independent amplifiers in BTL configuration. Through the I2C-bus, diagnosis of temperature warning and clipping level is fully programmable and the information available via two diagnostic pins is selectable. The status of each amplifier (output offset, load or no load, short-circuit or speaker incorrectly connected) can be read separately.

Features and benefits:

• Operates in legacy mode (non I2C-bus) and I2C-bus mode (3.3 V and 5 V compliant)
• Three hardware-programmable I2C-bus addresses
• Drive 4  or 2  loads
• Speaker fault detection
• Independent short-circuit protection per channel
• Loss of ground and open VP safe (with 150 m series impedance and a supply  decoupling capacitor of 2200 F maximum)
• All outputs short-circuit proof to ground, supply voltage and across the load
• All pins short-circuit proof to ground
• Temperature-controlled gain reduction to prevent audio holes at high junction temperatures
• Low battery voltage detection
• Offset detection
• This part has been qualified in accordance with AEC-Q100

Circuit Diagram:

Circuit Diagram for 4 x 45W Audio Power Amplifier

Datasheet for TDA8595: Download

High-Frequency General-Purpose Amplifier Applications 2SK1066

Applications:

 · High-frequency general-purpose amplifier.

 · AM tuner RF amplifier.

 · Low-noise amplifier.

Features:

 · Large yfs.

 · Small Crss.

 · Ultralow noise figure.

 · Ultrasmall-sized package permitting 2SK1066-

applied sets to be made smaller and slimmer.

Datasheet: Download

 2SK1066