5

500 - 15 - 09

46

44

42

40

VCR (dB)

10

100

1k

10k

g

m

(mV)

6

4

2

0

10

100

1k

10k

R

E

(

Ω)

R

E

(

Ω)

Fig. 11 Transductance vs Emitter Resistor

Fig. 10 Volume Control Range vs Emitter Resistor

REVISION NOTES:

Chip information removed.

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 March 1976 Gennum Corporation.

All rights reserved. Printed in Canada.

All resistors in ohms, all capacitors in microfarads unless otherwise stated

Fig. 12 LC505 Typical Hearing Aid Application

All resistors in ohms, all capacitors in microfarads unless otherwise stated

Fig. 13 LD505 Typical Hearing Aid Application

33

V

cc

2.2 k

0.33

1 k

V

B

10

10

1

2

=1.35

+

+

100 k

3

4

5

6

LC505

V

cc

0.333

1k

V

B

10

2

3

=1.35

+

100k

8

5

6

7

33

10

+

4

10

+

10k

MAXIMUM

OUTPUT

CONTROL

1

LD505

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 preproduction 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.