500 - 52 - 09

3

I/P

25 k

VB

2 k

FILTER A

18 k

13.5 k

FILTER B

VBIAS

O/P

GND

2

(3)

6

(7)

3

(2)

5

(8)

8

(5)

7

(6)

1

(4)

4

(1)

Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.

© Copyright 1983 Gennum Corporation. All rights reserved. Printed in Canada

REVISION NOTES

Changes to standard packaging information

DOCUMENT

IDENTIFICATION

PRODUCT PROPOSAL

This data has been compiled for market investigation purposes

only, and does not constitute an offer for sale.

ADVANCE INFORMATION NOTE

This product is in development phase and specifications are

subject to change without notice. Gennum reserves the right to

remove the product at any time. Listing the product does not

constitute an offer for sale.

PRELIMINARY DATA SHEET

The product is in a development phase and specifications are

subject to change without notice.

DATA SHEET

The product is in production. Gennum reserves the right to make

changes at any time to improve reliability, function or design, in

order to provide the best product possible.

All external resistors in ohms, all capacitors in

µF unless otherwise stated.

Fig. 3 LC506/LE507 Typical Hearing Aid Circuit

All external resistors in ohms, all capacitors in

µF unless otherwise stated.

Numbers in brackets are for DIP packages.

Fig. 2 Functional Schematic

2.2

2

0.1

VB = 1.3 VDC

33

GAIN

TRIM

6

4

6

3

10 k

3

5

+

2

BK1606

OR EQUIVALENT

7

1

5

+

33 k

10

1

10 k

VOLUME

CONTROL

0.1

RS

3.5 k

LC506

LE507