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PDF NJW2307 Data sheet ( Hoja de datos )
| Número de pieza | NJW2307 | |
| Descripción | FM Modulation/Demodulation | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJW2307 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
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NJW2307
FM Modulation/Demodulation with PLL
GENERAL DESCRIPTION
NJW2307 is a FM modulation / demodulation IC for audio signal
in full duplex communication that operates from 3.8V.
In addition to audio signal, it can also be used in data pulse.
By the parallel interface, set the carrier frequency (2.3MHz / 2.8MHz),
and allows independently power-down control the Modulation /
Demodulation circuit.
The NJW2307 includes FM Modulation / Demodulation, VCO, PLL
and AFC, will contribute to the adjustment-free.
PACKAGE OUTLINE
NJW2307VC3
APPLICATIONS
Interphone, Voice for Hot water supply system , Wireless and Wired Communication Systems
FEATURES
Operating Voltage
3.8 to 5.5V
Low operating Current Mod : 9mA typ.
Demod : 9.5mA typ.
Power-Down : 1uA Max
Deviation (AF_IN = 0.5Vpp) ±15kHz (standard)
FM Modulation output
1Vpp(standard)
AF Demodulation output
0.5Vpp(standard)
BiCMOS
Package
SSOP20-C3
Block Diagram
GND1 1
FIL1 2
AF_OUT 3
LD2 4
V+ 5
LD1 6
OSC 7
FREF 8
LDCAP2 9
AF_IN 10
+6dB
Amp.
VCO
PFD
+
CP
Lock
Detector
Calibration
Lock
Detector
Divider
PFD
+
CP
Divider
Limit
Amp.
RF
Amp.
MOD/DEM
Control
CHANNEL
Control
-6dB
Amp.
VCO
Sine
Converter
Driver
Amp.
20 LDCAP1
19 FM_DEC
18 FM_IN
17 DEM_SW
16 MOD_SW
15 CH_SEL
14 BIAS
13 GND2
12 FM_OUT
11 FIL2
Ver.2015-03-24
-1-
1 page  
NJW2307
Demodulation Characteristic (Test Circuit 2)
PARAMETER
SYMBOL
TEST CONDITIONS
Demodulation Output
Frequency
DEM_SW = H,
FAF OUT fmod = 1kHz ⇒ 5kHz
Demodulation Level
VAF OUT DEM_SW = H
MIN.
-3
0.37
Demodulation S/N1
Demodulation S/N2
Demodulation Output
Distortion Level
FMIN
Impedance
AFOUT
Load Capability
LD2 Lock-up Time
SN1 DEM_SW = H
SN2 DEM_SW = H,
VFM IN = 2.0mVpp
THD DEM_SW = H
30
-
-
ZFM IN
ZAF OUT
DEM_SW = H
DEM_SW = H,
AF_OUT Load resistance = 10kΩ ⇒ 1kΩ
TLD2 MOD_SW = H
-
-3
-
TYP. MAX. UNIT
- 2 1 dB
0.5 0.63 Vpp
40 - dB
12 - dB
1 -%
10 - kΩ
- 2 1 dB
1 - msec
Reference Signal Oscillator Circuit Characteristic (Test Circuit 3)
PARAMETER
SYMBOL
TEST CONDITIONS
Oscillatory Frequency Range
Negative resistance
Oscillator Startup Time
Oscillation Detection Time
FOSC
-R
TOSCS1
TOSCS2
OSC-GND = 47pF
FREF-GND = 47pF
OSC-FREF = 510kΩ
OSC-GND = 47pF
FREF-GND = 47pF
OSC-FREF = 510kΩ
OSC-GND = 47pF
FREF-GND = 47pF
OSC-FREF = 510kΩ
OSC-GND = 47pF
FREF-GND = 47pF
OSC-FREF = 510kΩ
MIN. TYP. MAX. UNIT
- 4 - MHz
- - 5 - kΩ
- 0.1 1.6 msec
- 50 - usec
Ver.2015-03-24
-5-
5 Page 
NJW2307
EVALUATION PC BOARD
The evaluation board is useful for your design and to have more understanding of the usage and performance of
this device.
Note that this board is not prepared to show the recommendation of pattern and parts layout.
Circuit Diagram
C1
C2 R1
AF_OUT
LD2
V+
LD1
C3
R2
R3
C14 C13 C12
R4
FREF
AF_IN
R5
C4
C5
1
2
3
4
5
6
7
8
9
10
+6dB
Amp.
VCO
PFD
+
CP
Lock
Detector
Calibration
Lock
Detector
Divider
PFD
+
CP
Divider
Limit
Amp.
RF
Amp.
MOD/DEM
Control
CHANNEL
Control
-6dB
Amp.
VCO
Sine
Converter
Driver
Amp.
20 C11
19 C10
18 C9
17
DEM SW
16
MOD SW
15
CH SW
14
FM_IN
R8
V+
13
12 C8
FM_OUT
R7
11 C6
R6 C7
List of Component
Designation
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
Value
680pF
68nF
10uF
10nF
1uF
1uF
47uF
0.1uF
0.1uF
0.1uF
1000pF
0.1uF
1uF
10uF
Items
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Designation
R1
R2
R3
R4
R5
R6
R7
R8
Value
1kΩ
10kΩ
300kΩ
300kΩ
0Ω
200Ω
10kΩ
50Ω
IC1 NJW2307VC3
Items
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
IC
Ver.2015-03-24
- 11 -
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet NJW2307.PDF ] | |
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