NJM2550 データシートの表示（PDF） - Japan Radio Corporation

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NJM2550

10.7MHz INPUT FM IF DEMODULATOR

Japan Radio Corporation  

NJM2550

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

Supply Voltage

V+

Power Dissipation

PD

Operating Temperature

Topr

Storage Temperature

Tstg

RATINGS

10.0

300

- 40 to +85

- 40 to +125

(Ta=25°C)

UNIT

V

mW

°C

°C

RECOMMENDED OPERATIONAL CONDITION

(Ta=25°C)

PARAMETER

SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT

Supply Voltage

V+

2.0

3.0

9.0

V

ELECTRICAL CHARACTERISTICS

(Ta=25°C, V+=3 V, f i f=10.7MHz, fmod=1kHz, fdev=±100kHz, unless otherwise noted)

PARAMETER

Current Consumption

IF Amplifier Input Resistance

SYMBOL TEST CONDITIONS

Iccq

Rin

No Signal

V COMP REF=0.6V

V COMP IN = 0.65V

MIN.

-

-

TYP.

4.4

330

MAX.

5.8

-

UNIT

mA

Ω

Signal to Noise Ratio 1

S/N1 VinIF=80dBuV

-

60

-

dB

- 3dB Limiting Sensitivity

f i f = 10.7MHz

Vin(lim)

f i f = 50MHz

-

30

-

dBuV

-

(40)

-

Demodulated Signal Level

Vod VinIF=80dBuV

80

120 180 mVrms

Demodulated Signal Frequency

Characteristics

fDET

Based on fmod=1kHz

Measured at –3dB

-

1

-

MHz

Buffer Amplifier Gain

Gamp 1MHz

-1

0

1

dB

AM Rejection Ratio

AMR

VinIF=80dBuV

AM=30%

-

50

-

dB

Duty Ratio of Wave Shaped Output

DR VinIF=80dBuV

40

50

60

%

Quick Charge / Discharge Current

High Level Voltage of

COMP OUT Terminal

Ich

VfskH

V COMP REF=GND

V COMP IN = 0.3V

1kΩ load

Low Level Voltage of

COMP OUT Terminal

VfskL 1kΩ load

The values shown in parenthesis are reference values.

120 210 300

uA

-

3

-

V

-

0.1

-

V

Ver.2006-02-24

-2-

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