PowerWise® Design University

Reducing System Cost with High Performance Audio Amplifiers

What is the smallest package available?
LD
Micro SMD
SO
MSOP

With respect to traditional audio amplifier solutions, how many external devices does the LM4867 eliminate?
3 resistors, 4 capacitors
4 resistors, 2 capacitors
1 resistor, 3 capacitors
2 resistors, 1 capacitor

Amplifier output coupling capacitors perform which of the following?
Power supply decoupling
Prevents DC current flow through speakers
Couples the audio signal to the speakers
B and C

How does the LM4894 eliminate input coupling capacitors?
Requires a positive and negative power supply voltage
Has an internal diode
Uses three resistors in parallel
Has a fully differential input