DESCRIPTION
The LC552 is a versatile low voltage, high gain, high power output amplifier.
It features a preamplifier module with adjustable gain and a unique power amplifier module that can be operated either as a high power, high efficiency class B amplifier, with very low quiescent current consumption, or as a medium power "vari-bias" class A amplifier.
While designed specifically for use in body type hearing aids, the LC552 can be used in other applications where linear audio frequency amplification and frequency shaping is required.

FEATURES
• operates over a supply range of 1.0 V to 3.0 V
• selectable class B or vari-bias class A operation
• feedback stabilized gain ≤ 80 dB
• high power output > 140 dBSPL
• independent preamplifier and output modules
• minimum external parts count