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PDF NJM2287 Data sheet ( Hoja de datos )
| Número de pieza | NJM2287 | |
| Descripción | 100MHz INPUT MIXER AND 450kHz IF GAIN CONTROL IC | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJM2287 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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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-
1 page  
NJM2287
PARAMETER
IF AMP CHARACTERISTICS
Input Frequency at IF IN
IF Gain
IF Input 1dB Compression point
Noise Level at IF OUT
Maximum Output Voltage at IF OUT
Input Resistance at IF IN
RSSI CHARACTERISTICS
RSSI Output
Gain Control CHARACTERISTICS
Gain Control Range
Gain Scaling
SYMBOL
CONDITIONS
FI IF
G IF1
G IF2
G IF3
G IF4
PI IF
NO IF
PO IF
RIIF
Gain flatness of ±3dB
at pin9
GC IN = 1V
GC IN = 0V
GC IN = 1V
GC IN = 2V
GC IN = 2.5V
P1dB
GC IN = 2.5V
Test Circuit4
GC IN = 2V
BW = 6.25kHz
IF IN = 30dBuV
GC IN = 0V
Resistance between
pin 6 and pin 7
VRSSI1
VRSSI2
VRSSI3
IF IN = 20dBuV
IF IN = 60dBuV
IF IN = 100dBuV
GCR
GCS
GC IN = 0 to 2.5V
GC IN = 1 to 2V
MIN. TYP. MAX. UNIT
200 450 1000 kHz
98 102 106
--- 61 ---
--- 22 ---
--- 9 ---
89 94 ---
dB
--- 38 43 dBuV
120 121
34 40
---
46
kΩ
--- 20 100
0.95 1.1 1.25
1.95 2.15 2.35
mV
V
81 --- ---
dB
35 38 41 dB/V
Ver.2013-07-18
-5-
5 Page 
PRINTED CIRCUIT BOARD
Circuit Side View
NJM2287
R1 R7
R2 C1 C15
IC1
NJM2287
C5 C6
R3 C7
R8 C8
R5
Ground Side View
V+1
V+2
IF OUT
GC IN
RSSI
Ver.2013-07-18
MIX OUT
- 11 -
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet NJM2287.PDF ] | |
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