I/P

FILTER A

6

(7)

4

(1)

8

(5)

3

(2)

5

(8)

7

(6)

1

(4)

O/P

FILTER B

VBIAS

GND

2

(3)

Class A Output Stage

with Input Biasing

LE507 DATA SHEET

DESCRIPTION

The LE507 is a low voltage class A amplifier design, primarily

for low voltage and low power use.

The broad application

include AF output stages, RF amplifiers and output stages of

the hearing instruments. The circuit is comprised of three

stages all of them having

access to their collectors for

frequency shaping, feedback, etc. The provision for the bias

network and alternative gain increase to 76 dB are included on

the circuit.

For more application information refer to Information Note

520 - 30.

Document No. 500 - 52 - 09

BLOCK DIAGRAM

All external resistors in ohms, all capacitors in

µF unless otherwise stated.

Numbers in brackets are for DIP package.

STANDARD PACKAGING

GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3

tel. (905) 632-2996 fax: (905) 632-5946

Japan Branch: A-302, M i yamae Vi l l age, 2–10–42 M i yamae, Suginami–ku, Tokyo 168, Japan

tel. (03) 3334-7700

fax (03) 3247-8839

Revision Date: January 2001

• 8 pin PLID

®

• 8 pin DIP

FEATURES

• 76 dB of gain

• internal DC bias for I/P stage

• applications include AF output stages,

hearing aids and RF amplifiers

• total harmonic distortion 1% (typical)