HA12181FP datasheet(3/20 Pages) RENESAS

Nome de Peças	HA12181FP

Descrição Electrónicos	AM Radio Noise Reduction System

PDF	20 Pages

Scroll/Zoom	100%

Fabricante Electrônico	RENESAS [Renesas Technology Corp]

Página de início	http://www.renesas.com

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HA12181FP

Rev.2.00 Jun 15, 2005 page 3 of 19

Table of Pin Description and External Parts

External parts

Influence of External

parts

No.

Name

Function

voltage

(V) (No

input)

Equivalent circuit

No.

recom-

mended

value

Larger

than

recom-

mended

value

Smaller

than

recom-

mended

value

R500

100 K

Longer

IF AGC

Time

constant

for IF

AGC.

2.7

R500

100k

C502

3.3

C502

3.3

time to

stabilize

AGC.

distortion

recover.

Bias1

Bypass

for

voltage

Stabi.

3.2

C500

0.033

C500

0.033

—

Increased

noise.

AF input

Input of

AF.

3.3

C513

20k

AF IN

C513

—

Bias2

Decide

the

current of

filter

network.

1.3

R506

12 K

Cut off

frequency

of L·P·F

and H·P·F

shifted

lower.

Cut off

frequency

of L·P·F

and H·P·F

shifted

higher.

Phase

circuit

3.3

C512

0.068

C512

0.068

Must be used on the

recommended value.

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