HA12181FP 查看數據表（PDF） - Renesas Electronics

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产品描述 (功能)

生产厂家

HA12181FP

AM Radio Noise Reduction System

Renesas Electronics 

HA12181FP

Test Circuit

IF-IN

PULSE-IN

C501

1000p

50

R505 C504

47k 0.22µ

Det.Out

B

VCC (8.2V)

+

A

C503 +

0.01µ

R502

15k

R503 C507 C509

180k 2200p 0.033µ

C506

100µ

16

15

14

13

12

11

10

R504

4.7k

+

C508

1µ

9

C OUT

AM-SG

AF-IN

+

50

AF-SG

C513

1µ

R500

100k

1

2

3

4

5

6

+ C502 C500

3.3µ 0.033µ

R506 C512 C511

12k 0.068µ 0.033µ

7

8

C510

0.033µ

Unit R : Ω

C:F

Note: 1. Resistors tolerance are within ±5%.

2. Capacitors tolerance (C509 to C512) are within ±5%, other capacitor are within ±10%.

Operation Principle

ANT.

A

1st IFT

16 IF

Noise

Detector

B

RF

CONV.

IF

AM-IC

DET

3

C

Processing

Waveform Circuit

9 Out

HA12181FP D

Figure 2 System Block Diagram of AM Radio

Rev.2.00 Jun 15, 2005 page 7 of 19

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