|
|
PDF CXA3107N Data sheet ( Hoja de datos )
| Número de pieza | CXA3107N | |
| Descripción | IF Amplifier for M-ary FSK Pagers | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de CXA3107N (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
|
No Preview Available !
CXA3107N
IF Amplifier for M-ary FSK Pagers
For the availability of this product, please contact the sales office.
Description
The CXA3107N is a low current consumption FM
IF amplifier which employs the newest bipolar
process. It is suitable for M-ary FSK pagers.
20 pin SSOP (Plastic)
Features
• Low current consumption: 570 µA
(typ. at VCC=1.4 V)
• Low voltage operation: VCC=1.1 to 4.0 V
• Small package 20-pin SSOP
• Needless of IF decoupling capacitor
• Reference power supply for operational amplifier
and comparator
• Bit rate filter with variable cut-off
• Misoperation prevention function for continuous
data
• RSSI function
• IF input, Vcc standard
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC 7.0
• Operating temperature Topr –20 to +75
• Storage temperature Tstg –65 to +150
V
°C
°C
Operating Condition
Supply voltage
VCC 1.1 to 4.0 V
Applications
• M-ary FSK pagers
Function
Plastic
Structure
Bipolar silicon monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E96303A8Z
1 page  
CXA3107N
Pin
Symbol Pin voltage
No.
14 B.S.
—
Equivalent circuit
Description
72
14
20k
140k
Controls the battery saving.
Setting this pin low suspends
the operation of IC.
(Applied voltage range:
–0.5 V to +7.0 V)
GND
15 CHARGE
—
20k
15
Controls the charge speed of
the quick charge circuit.
Set this pin high to execute the
100k quick charge.
(Applied voltage range:
GND –0.5 V to +7.0 V)
18 REG CONT
—
19 REG OUT
1.0 V
20 VCC
18
72
78k
19
1k
22k
VCC
Output for internal constant-
voltage source amplifier.
Connects the base of PNP
transistor.
(Current capacity: 100 µA)
GND
VCC
Constant-voltage source
output.
Controlled to maintain 1.0 V.
GND
Power supply.
—5—
5 Page 
CXA3107N
4) Detector
The detector is of quadrature type. To perform phase shift, connect a ceramic discriminator to Pin 5.
The phase shifting capacitor for the quadrature detector is incorporated. The FM (FSK) signal demodulated
with the detector will be output to AUDIO (Pin 10) through the internal LPF.
The AUDIO output is the anti-phase output to NRZ OUT.
The CDBM455C50 (MURATA MFG. CO., LTD) ceramic discriminator is recommended for the CXA3107N.
For the 2-level system, the CDBM455C28 can also used.
45 6
8.2k
Ceramic discriminator
CDBM455C50
VCC
Fig. 3
5) Filter Buffer, Level Comparator and NRZ Comparator
The LPF circuit is built in this IC.
The LPF output is connected internally to the NRZ comparator, level comparator and quick charge circuit.
16 10 11
L.C.
0.2V
4
LPF
DET
Fig. 4
Using the LPF, remove noise from the demodulated signal and input the signal to the above three circuits.
The level comparator and the NRZ comparator shape waveform of this input signal and output it as a
square wave. The comparator output stage is for open collector.
Thus, if the CPU is of CMOS type and the supply voltage is different, a direct interface as illustrated in the
figure below can be implemented.
VCC 20
VCC 1.4V
CMOS power supply
(11)
16 CMOS IC
Comparator output
Fig. 5
6) REG CONT
Controls the base bias of the external transistors.
—11—
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet CXA3107N.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| CXA3107N | IF Amplifier for M-ary FSK Pagers | Sony Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |