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

TEST CIRCUIT

This test circuit allows the measurement of all parameters described in “ELECTRICAL CHARACTERISTICS”.

Test Circuit 1 (Detected Output: S-Curve)

Audio Analyzer

Input impedance = 100kΩ

LPF = 30kHz

AF OUT

V+

T1

C7

C6

0.01u

82p

10

9

R2

2.4k

C5

3p 8

RSSI OUT

V

C4

100p

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

Zo=50

IF IN

Test Circuit 2 (Detected Output: N-Curve, the Detected Output is reversed)

Audio Analyzer

Input impedance = 100kΩ

LPF = 30kHz

AF OUT

V+

T1

C7

C6

0.01u

82p

R2

2.4k

10

9

8

C5

3p 7

RSSI OUT

V

C4

100p

6

QUAD

DET

IF AMP

RSSI

1

2

3

4

C1

C2

C3

0.01u 0.01u 0.01u

C9

C8

R1

10u

0.01u

51

Zo=50

IF IN

5

T1:4CJH(Sample No.:080293006)

SAGAMI ELEC CO., LTD. (Japan)

Ver.2010-06-24

-4-

Share Link: