NTE1849 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit Frequency Synthesizer for TV Tuning Systems

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: (V_SS = 0V, T_A = +25°C unless otherwise specified)
Supply Voltage, V_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 to +9V
Input Voltage, V_I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 to V_DD +0.3V
Output Voltage, V_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 to V_DD +0.3V
Operating Temperature Range, T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +100°C
Operating Conditions: (V_SS = 0V, T_A = 0° to +70°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply Voltage
V_DD
6.5 7.0 7.5 V
Electrical Characteristics: (V_DD = 7V, V_SS = 0V, T_A = 0° to +70°C unless otherwise specified)
Parameter
Symbol Test Conditions
Min Typ Max Unit
Supply Current
Total Power Dissipation
Input Terminal (LFI)
I_{DD TA = +25°C, VDD = 7V,}
–
P_tot ^{without load}
–
–
15 mA
–
105 mW
Maximum Input Signal Frequency
Input Voltage Swing
Input Current
Input Terminal (PI0 to PI3, LDI)
f_i(max)
V_i
I_I(1)
Input Sine Wave,
Free Running LFI
V_I = V_SS to V_DD
15.6
–
– MHz
0.7
–
–
V_p–p
–50
–
+50 µA
“H” Level Input Voltage
“L” Level Input Voltage
Input Current
V_IH
V_IL
I_I(2) V_I = V_SS to V_DD
3.4
–
V_DD
V
V_SS
–
0.8 V
–10
–
+10 µA