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Sony Semiconductor Electronic Components Datasheet

CXA3117AN Datasheet

IF Amplifier for M-ary FSK Pagers

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CXA3117AN pdf
CXA3117AN
IF Amplifier for M-ary FSK Pagers
Description
The CXA3117AN is a low current consumption FM
IF amplifier which employs the newest bipolar
process. It is suitable for M-ary FSK pagers.
24 pin SSOP (Plastic)
Features
Low current consumption: 1.1mA
(typ. at VCC = 1.4V)
Low voltage operation: VCC = 1.1 to 4.0V
Small package 24-pin SSOP
Second mixer and oscillator
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
Quick charge by the detector output sense method
Applications
M-ary FSK pagers
Double conversion pagers
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
Supply voltage
VCC 7.0 V
Operating temperature
Topr –20 to +75 °C
Storage temperature
Tstg –65 to +150 °C
Allowable power dissipation PD
417 mW
Operating Condition
Supply voltage
VCC 1.1 to 4.0 V
Block Diagram and Pin Configuration
24 23 22 21 20 19 18
GND
MIX
OSC
12 3
REG
LVA
CHARGE
IF_LIM
45 67
17 16 15 14 13
LEVEL
COMP
RSSI
QUAD_DET
FILTER
8 9 10 11
12
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–
E97220A8Z


Sony Semiconductor Electronic Components Datasheet

CXA3117AN Datasheet

IF Amplifier for M-ary FSK Pagers

No Preview Available !

CXA3117AN pdf
CXA3117AN
Pin Description
Pin
No.
Symbol
Pin
voltage
1 OSC IN
1.4V
2 OSC OUT 0.7V
3 MIX OUT 1.3V
4 VCC
5 IF IN
1.4V
Equivalent circuit
VCC
15k 300
1
72 15k
2
GND
1.5k
VCC
3
GND
1.5k 20k 20k
5
VCC
1.5k
Description
Connects the external parts of crystal
oscillator circuit.
A capacitor and crystal oscillator are
connected to these pins and VCC.
Mixer output.
Connect a 455kHz ceramic filter
between this pin and IF IN.
Power supply.
IF limiter amplifier input.
6 TH CONT —
6
25k
GND
VCC
GND
VCC
Determines the level comparator
threshold value.
Threshold value can be adjusted by
inserting the resistor between Pin 6 and
VCC.
Normally, short to VCC.
7 FSK REF 0.2V
7
72 Connects the capacitor that determines
the low cut-off frequency for the entire
system.
GND
–2–


Part Number CXA3117AN
Description IF Amplifier for M-ary FSK Pagers
Maker Sony Corporation
Total Page 30 Pages
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