CD4440 / LA4440 6W 2-Channel Audio Power Amplifier IC SIP14H Package
CD4440 / LA4440 is a Stereotype audio amplifier IC with an inbuilt dual channel that enables it for stereo and bridge amplification applications. It gives 6W output in dual mode and 19W in bridge mode. This IC has inbuilt over power protection, small residual noise, good ripple rejection and special feature of pin-to-pin protection.?
ISD1760 Multi-message Single-chip Voice Record Playback IC DIP-28 Package
LM380 2.5-Watt Audio Power Amplifier IC DIP-14 Package
LM386 Low Voltage Audio Power Amplifier IC DIP-8 Package
The LM386 is power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200.The inputs are ground referenced while the output automatically biases to one-half the supply voltage.