NJM2549RB2 Ver la hoja de datos (PDF) - Japan Radio Corporation

Número de pieza

componentes Descripción

Fabricante

NJM2549RB2

WIDE BAND FM IF DEMODULATOR

Japan Radio Corporation  

NJM2549

EVALUATION BOARD

The evaluation board is useful for your design and to have more understanding of the usage and performance of

this device. This circuit is the same as TEST CIRCUIT. Note that this board is not prepared to show the

recommendation of pattern and parts layout.

Circuit Diagram

AF OUT V+

RSSI OUT

C7

0.01u

T1

R2

C6

2.4k

82p

C4

100p

C5

10

9 3p 8

7

6

QUAD

DET

IF AMP

RSSI

1

2

3

4

5

C1

0.01u

C2

0.01u

C3

0.01u

C9

C8

R1

10u

0.01u

51

IF IN

List of Component

Items

Capacitor

Capacitor

Capacitor

Capacitor

Capacitor

Capacitor

Capacitor

Capacitor

Capacitor

Designation

Value

Items

Designation

Value

C1

0.01uF

Resistor

R1

51Ω

C2

0.01uF

Resistor

R2

2.4kΩ

C3

0.01uF

C4

100pF

Transformer

T1

4CJH

C5

3pF

C6

82pF

IC

IC1

NJM2549

C7

0.01uF

C8

0.01uF

C9

10uF

Note: IF transformer for detection, 4CJH(Sample No.:080293006) SAGAMI ELEC CO., LTD. (Japan)

Ver.2010-06-24

- 10 -

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