cf8223a Nippon Precision Circuits Inc, (NPC), cf8223a Datasheet - Page 4

• Manufacturer Part Number: cf8223a
• Description: Fsk Decoder And Dtmf Receiver Ic
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

AC Electrical Characteristics
FSK decoder
V
DTMF receiver
V
1. Input signal is up to V
Input-stage amplifier Characteristics
V
Detection sensitivity
Noise reduction ratio
Detection frequency deviation
Non-detection frequency deviation
Detection sensitivity
Non-detection sensitivity
Signal level error
High-frequency rejection ratio
Noise rejection ratio
Dial tone rejection ratio
Input leakage current
Input resistance
DC open-loop voltage gain
Unity gain frequency
Load capacitance
Load resistance
DD
DD
DD
= 3.0V ± 0.3V, GND = 0V, f
= 3.0V ± 0.3V, GND = 0V, f
= 3.0V ± 0.3V, GND = 0V, f
Parameter
Parameter
Parameter
DD
level.
CLK
CLK
CLK
Symbol
Symbol
Symbol
A
R
C
R
I
VOL
f
IN
C
IN
L
L
= 3.579545MHz, T
= 3.579545MHz, T
= 3.579545MHz, T
Typical application circuit
Mark signal and SPACE
signal are same level.
Noise: Random noise from
200Hz to 3400Hz.
Typical application circuit
Typical application circuit
CF8223A
Condition
Condition
Condition
a
a
a
= − 20 to 85 ° C unless otherwise noted.
= − 20 to 85 ° C unless otherwise noted.
= − 20 to 85 ° C unless otherwise noted.
1
±1.5% ± 2
−32.0
±3.5
min
− 40
min
min
20
30
80
50
–
–
–
–
–
–
–
–
NIPPON PRECISION CIRCUITS INC.—4
Rating
Rating
Rating
− 37.5
typ
typ
typ
18
12
20
–
–
–
–
–
–
–
1
–
–
–
–
−50.0
max
max
max
100
0.0
0
–
–
–
6
–
–
–
1
–
–
–
–
Unit
dBm
Unit
dBm
dBm
Unit
M Ω
kHz
k Ω
dB
Hz
dB
dB
dB
dB
µA
dB
pF
%