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Sony Semiconductor Electronic Components Datasheet

CXA1994BM Datasheet

M-ary FSK Demodulating Comparator

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CXA1994AM/BM
M-ary FSK Demodulating Comparator
For the availability of this product, please contact the sales office.
Description
The CXA1994AM/BM is a comparator which allows
8 pin SOP (Plastic)
the M-ary (4-level) FSK data to be demodulated in
combination with an FM IF amplifier for pagers.
Features
Low power consumption
70µA (at VCC = 1.4V, including the current on
battery saving control pin)
Low voltage operation
VCC = 1.0 to 4.0V
Applications
M-ary FSK pagers
Function
Window comparator for MSB detection
Battery saving control pin
Threshold level adjustment pin
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 Conditions
Supply voltage
VCC
1.0 to 4.0
V
Block Diagram
876 5
1 23 4
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–
E96428A8Y


Sony Semiconductor Electronic Components Datasheet

CXA1994BM Datasheet

M-ary FSK Demodulating Comparator

No Preview Available !

CXA1994AM/BM
Pin Description
Pin
No.
Symbol
1 VCC
Pin
voltage
1.5V
2 TH CONT
Equivalent circuit
VCC
2
GND
Description
Vcc.
Adjusts the threshold level for
comparator.
VCC
3 DATA IN
0.2V
3
Signal input.
Connected to the COMP IN pin of
the CXA1484A.
GND
4 REF
0.2V
4
Reference input.
Connected to the SENSE pin of the
CXA1484A.
5 DATA OUT —
6 NC
7 GND
0
5
8 B.S.
8
GND
VCC
Comparator output.
Ground.
Battery saving control.
–2–
GND


Part Number CXA1994BM
Description M-ary FSK Demodulating Comparator
Maker Sony Corporation
Total Page 8 Pages
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