NJM2204A_1 Datasheet, PDF (1/5 Pages) New Japan Radio – LOG AMPLIFIER

NJM2204A
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
NJM2204AD
NJM2204AD
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
V⁺2
EXT C1
LOG OUT 2
V⁺1
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
Ver.2003-12-09
-1-