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New Japan Radio - 100MHz INPUT MIXER AND 450kHz IF GAIN CONTROL IC

Numéro de référence NJM2287
Description 100MHz INPUT MIXER AND 450kHz IF GAIN CONTROL IC
Fabricant New Japan Radio 
Logo New Japan Radio 





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NJM2287 fiche technique
NJM2287
100MHz INPUT MIXER AND 450kHz IF GAIN CONTROL IC
GENERAL DESCRIPTION
The NJM2287 is an IF Gain Control IC with 450kHz (standard) IF input,
which operates from 2.7V to 5.5V supply. It includes a local-buffer, mixer,
IF gain control amplifier, and RSSI circuit.
The NJM2287 is especially designed for digital transceivers with built-in
an analog gain control amplifier and a subsequent analog to digital converter
circuit.
The useful functions of the NJM2287 are rail-to-rail output swing of 3Vpp
@3.3V and wide gain control of over 80dB. These features help streamline
the subsequent circuit design.
FEATURES
Operating Voltage
Low Operating Current
Maximum Mixer Input Frequency
IF Frequency
Wide IF Gain Control Range
Rail - to - rail Output
Wide Range RSSI
Bipolar Technology
Package Outline
2.7V to 5.5V
4.7mA @V+ = 3.3V, no signal
100MHz (reference value)
450kHz (standard)
over 80dB
3Vp-p @V+ = 3.3V
over 70dB (linear area)
SSOP14
BLOCK DIAGRAM
PACKAGE OUTLINE
NJM2287V (SSOP14)
LO DEC LO IN
14 13
V+1
12
V+2 RSSI IF OUT GC IN
11 10
9
8
MIX IF
MIX IF
12
RF DEC RF IN
345
GND1 MIX OUT GND2
6
IF IN
7
IF DEC
No. Symbol
1 RF DEC
2 RF IN
3 GND1
4 MIX OUT
5 GND2
6 IF IN
7 IF DEC
8 GC IN
9 IF OUT
10 RSSI
11 V+2
12 V+1
13 LO IN
14 LO DEC
Description
Mixer Decoupling
Mixer Input
Mixer Ground
Mixer Output
IF Ground
IF Limiter
Amplifier Input
IF Decoupling
Gain Control
Voltage Input
FM IF Output
RSSI Output
Supply Voltage
for IF
Supply Voltage
for Mixer
Local Input
Local Decoupling
Ver.2013-07-18
-1-

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