NJM2550 JRC, NJM2550 Datasheet - Page 10

• Manufacturer Part Number: NJM2550
• Description: FM IF Demodulator IC / SSOP16
• Manufacturer: JRC

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Ver.2006-02-24
3. The external resistors connected to1pin and 16pin have the same thermal coefficient. By changing these
4. This board is designed to supply voltage to CHARGE SWITCH, the pull-up of COMP OUT, and the
5. List of Components
Transformer
thermal coefficients, RSSI thermal characteristics can be changed.
quadrature circuit from the common power source. NJM2550 permits each of CHARGE SWITCH and
pull-up of COMP OUT to have another power source within the limit of the rated power supply voltage.
Note that the voltage supplied to the quadrature circuit should be the same as the voltage supplied to pin5.
Resistor
Switch
Item
IC
fdev=±10kHz
Tquard related values :L=4400nH, Q=110
Number
SW1
R10
R11
R13
R14
R17
R18
R20
R21
R50
IC1
R2
R4
T9
4165-T070
NJM2550
value
---------
100k
100k
100k
open
7.5k
33k
68k
68k
68k
51
1k
Capacitor
Item
Rquad=30kΩ
Number
C12
C15
C16
C19
C11
C1
C3
C5
C6
C7
C8
1000p
3300p
1000p
0.01u
0.01u
value
330p
0.1u
30p
10u
10u
2p
NJM2550
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