NJM2204A Просмотр технического описания (PDF) - Japan Radio Corporation

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производитель

NJM2204A

LOG AMPLIFIER

Japan Radio Corporation  

NJM2204A

■ BLOCK DIAGRAM

NJM2204AD

■ LOG DETECTOR OUTPUT CHARACTERISTICS(EXAMPLE)

PARAMETER

TEST CONDITION

(Ta=25°C, V+=9V, VREF=6.0V)

MIN.

TYP.

MAX. UNIT

Log Detector Output

fIN=455kHz, VIN=8dB (50Ω termination)

0.976 1.004 1.032

V

fIN=455kHz, VIN=-2dB (50Ω termination)

0.868 0.896 0.924

V

fIN=455kHz, VIN=-12dB (50Ω termination)

0.727 0.755 0.783

V

fIN=455kHz, VIN=-22dB (50Ω termination)

0.586 0.614 0.642

V

fIN=455kHz, VIN=-32dB (50Ω termination)

0.446 0.474 0.502

V

fIN=455kHz, VIN=-42dB (50Ω termination)

0.305 0.333 0.361

V

fIN=455kHz, VIN=-52dB (50Ω termination)

0.164 0.192 0.202

V

fIN=455kHz, VIN=-62dB (50Ω termination)

0.057 0.085 0.113

V

Log Detector Linearity

Ta=-20°C to 85°C, VIN=-2 to -52dBm

-

-

±1

dB

* Log Detection Linearity : It is error between RF input level and ideal input level to straight line connected two

detection output points of two input level (-2dBm, -52dBm).

* Temperature coefficient of Log detection output voltage : approximately 90µV / °C Typ. (-20 to +85°C).

■ TEST CIRCUIT

-2-

Ver.2003-12-09

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