NTE1208
Integrated Circuit
CMOS, Phase Comparator
Description:
The NTE1208 is an integrated circuit in a 9Lead SIP type package consisting of a digital phase
comparator and an amplifier. Three state output connected to low pass filter (using an internal amplifi-
er) will produce DC voltage to control a VCO.
Low state pulses appear on phase out as long as the loop is unlocked and these can be utilized as
lock indicator.
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise speciied)
Supply Voltage, V
DD
10V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Voltage, V
IN
0.3V to V
DD
+0.3V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
30
to +75
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
55
to +125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= 35
to +75
C, V
DD
= 7.5V unless otherwise speciied)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Operating Supply Voltage
V
DD
4.5
8.0
V
Output Voltage, "H" Level
V
OH
V
IL
= 1.6V, V
IH
= 6.6V, I
OH
= 50
A
7.3
V
Output Voltage, "L" Level
V
OL
0.2
V
Quiescent Current
I
DD
V
IH
= 7.5V, V
IL
= 0V
200
A
3 State Leakage Current
I
TLH
500
nA
I
TLL
500
nA
Filter Amp Voltage Gain
A
V
R
12
= 1M
, f
IN
= 1kHz, R
g
= 600
3.0
dB
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