NTE1849 Просмотр технического описания (PDF) - NTE Electronics
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NTE1849 Datasheet PDF : 2 Pages
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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–bit pro-
grammable divider, 12–bit divider and phase comparator circuits.
Absolute Maximum Ratings: (VSS = 0V, TA = +25°C unless otherwise specified)
Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 to +9V
Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 to VDD +0.3V
Output Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 to VDD +0.3V
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +100°C
Operating Conditions: (VSS = 0V, TA = 0° to +70°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply Voltage
VDD
6.5 7.0 7.5 V
Electrical Characteristics: (VDD = 7V, VSS = 0V, TA = 0° to +70°C unless otherwise specified)
Parameter
Symbol Test Conditions
Min Typ Max Unit
Supply Current
Total Power Dissipation
Input Terminal (LFI)
IDD TA = +25°C, VDD = 7V,
–
Ptot without load
–
–
15 mA
–
105 mW
Maximum Input Signal Frequency
Input Voltage Swing
Input Current
Input Terminal (PI0 to PI3, LDI)
fi(max)
Vi
II(1)
Input Sine Wave,
Free Running LFI
VI = VSS to VDD
15.6
–
– MHz
0.7
–
–
Vp–p
–50
–
+50 µA
“H” Level Input Voltage
“L” Level Input Voltage
Input Current
VIH
VIL
II(2) VI = VSS to VDD
3.4
–
VDD
V
VSS
–
0.8 V
–10
–
+10 µA
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