
500 - 52 - 09
3
I/P
25 k
VB
2 k
FILTER A
18 k
13.5 k
FILTER B
VBIAS
O/P
R
E
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
μ
F unless otherwise stated.
Fig. 3 LC506/LE507 Typical Hearing Aid Circuit
All external resistors in ohms, all capacitors in
μ
F unless otherwise stated.
Numbers in brackets are for DIP packages.
Fig. 2 Functional Schematic
2.2
2
0.1
R
L =
1 k
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