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
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
V
REF
1
V
COMP
V
st
GND2
EXT C2
RF OUT
V
REF
2
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-
NJRC [ NEW JAPAN RADIO ]
