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NJM2204A

JRC
Part Number NJM2204A
Manufacturer JRC
Description LOG AMPLIFIER
Published Jun 14, 2009
Detailed Description NJM2204A www.DataSheet4U.com LOG AMPLIFIER ■ GENERAL DESCRIPTION The NJM2204A is an integrated IF limitting amplifier w...
Datasheet PDF File NJM2204A PDF File

NJM2204A
NJM2204A

Overview
NJM2204A www.
DataSheet4U.
com LOG AMPLIFIER ■ GENERAL DESCRIPTION The NJM2204A is an integrated IF limitting amplifier which contains temperature compensated reference power supply, 6 stage differential limitting amplifier and 6 stage logarithmic suppression circuit.
Its votage gain is 58dB and linearity is ±1dB within 50dB log dynamic range.
The voltage gain and log dynamic range are enlarged by connecting multiple stages.
The NJM2204A is suitable to telecommunication equipment.
■ PACKAGE OUTLINE NJM2204AD ■ FEATURES ● Wide log dynamic range ● Wide linearity range ● Large Voltage Gain ● Wide stable operating supply voltage range ● Wide stable operating temperature range ● Package Outline ● Bipolar Technology (50dB) (±1dB) (60dB) (8 to 12V) (-20 to 85°C) DIP16 ■ APPLICATION ● Cellular ● Personal wireless Radio ● Business wireless Radio ● Handy talky ■ PIN CONFIGURATION Pin No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name RF IN LOG OUT 1 GND1 VREF1 VCOMP Vst GND2 EXT C2 RF OUT VREF2 LOG OUT 4 LOG OUT 3 + V2 EXT C1 LOG OUT 2 + V1 Function AC Signal Input (C-coupling) LOG Detector Output (from 1st stage) Ground 1 Internal Reference Voltage 1 Compensation Input to Reference Voltage Compensated Output of Reference Voltage Ground 2 Terminate with C Limited AC Output Internal Reference Voltage2 LOG Detector Output (from 6th stage) LOG Detector Output (from 4th and 5th stage) Supply Voltage Input 2 Terminate with C LOG Detector Output (from 2nd and 3rd stage) Supply Voltage Input 1 NJM2204AD NJM2204AD Ver.
2003-12-09 -1- NJM2204A www.
DataSheet4U.
com ■ BLOCK DIAGRAM NJM2204AD ■ LOG DETECTOR OUTPUT CHARACTERISTICS(EXAMPLE) PARAMETER TEST CONDITION fIN=455kHz, VIN=8dB (50Ω termination) fIN=455kHz, VIN=-2dB (50Ω termination) fIN=455kHz, VIN=-12dB (50Ω termination) fIN=455kHz, VIN=-22dB (50Ω termination) fIN=455kHz, VIN=-32dB (50Ω termination) fIN=455kHz, VIN=-42dB (50Ω termination) fIN=455kHz, VIN=-52dB (50Ω termination) fIN=455kHz, VIN=-62dB (50Ω termination) MIN.
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