NTE1849
Integrated Circuit
Frequency Synthesizer for TV Tuning Systems
Description:
The NTE1849 is a CMOS frequency synthesizer for TV tuning systems consisting of a 13鈥揵it pro-
grammable divider, 12鈥揵it divider and phase comparator circuits.
Absolute Maximum Ratings:
(V
SS
= 0V, T
A
= +25擄C unless otherwise specified)
Supply Voltage, V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.3 to +9V
Input Voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.3 to V
DD
+0.3V
Output Voltage, V
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.3 to V
DD
+0.3V
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +70擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +100擄C
Operating Conditions:
(V
SS
= 0V, T
A
= 0擄 to +70擄C unless otherwise specified)
Parameter
Supply Voltage
Symbol
V
DD
Test Conditions
Min
6.5
Typ
7.0
Max
7.5
Unit
V
Electrical Characteristics:
(V
DD
= 7V, V
SS
= 0V, T
A
= 0擄 to +70擄C unless otherwise specified)
Parameter
Supply Current
Total Power Dissipation
Input Terminal (LFI)
Maximum Input Signal Frequency
Input Voltage Swing
Input Current
Input Terminal (PI0 to PI3, LDI)
鈥淗鈥?Level Input Voltage
鈥淟鈥?Level Input Voltage
Input Current
V
IH
V
IL
I
I(2)
V
I
= V
SS
to V
DD
3.4
V
SS
鈥?0
鈥?/div>
鈥?/div>
鈥?/div>
V
DD
0.8
+10
V
V
碌A(chǔ)
f
i(max)
V
i
I
I(1)
Input Sine Wave,
Free Running LFI
V
I
= V
SS
to V
DD
15.6
0.7
鈥?0
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
+50
MHz
V
p鈥損
碌A(chǔ)
Symbol
I
DD
P
tot
Test Conditions
T
A
= +25擄C, V
DD
= 7V,
+25 C,
without load
Min
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