LD505

GENNUM C O R P O R A T I O N High Gain Class A Amplifier LC505/LD505 DATA SHEET FEATURES 71 dB of gain with 1.3 V supply 0.2 to 2.0 mA of transducer current adjustment 43 dB of volume control range DESCRIPTION The LC/LD505 are low voltage, linear monolithic integrated amplifiers with a typical electrical gain of 71 dB. The circuits are comprised of a compensated, unconditionally stable, operational amplifier and a low distortion Class A single transistor output stage with negative feedback for stability over a wide temperature range. Current trimming in the output stage for inductive or resistive loads can be accomplished by connecting an emitter resistor from RE to ground. The LC/LD505 can operate over a supply voltage range of 1.0 to 1.6 DC. The LD505 which is an eight pin device, has an internal 2.2 kΩ decoupling resistor for microphone bias providing increased supply line rejection. The base of the output transistor is also accessible allowing connection of diodes in a feedback configuration for peak limiting. 1.0 to 1.6 V supply operating range 2.2 kΩ internal decoupling resistor for microphone bias (LD505 only) output limiting capabilities (LD505 only) STANDARD PACKAGING MINIpac P6 (LC505) MINIpac P8 (LD505) D E D S N E GN M SI M E O D C E R EW T N O N OR F VB MICBIAS 8 VB LIMITER 1 3 4 2 IN + OUT IN 2.2k 3 + OUT 5 6 - - 33k 33k VC 100 VC 100 5 7 GND All resistors in ohms, all capacitors in microfarads unless otherwise state...