MC1648 Motorola, MC1648 Datasheet - Page 2

• Manufacturer Part Number: MC1648
• Description: Voltage Controlled Oscillator
• Manufacturer: Motorola

1. This measurement guarantees the dc potential at the bias point for purposes of incorporating a varactor tuning diode at this point.
2. Frequency variation over temperature is a direct function of the C/ Temperature and L/ Temperature.
ELECTRICAL CHARACTERISTICS (Supply Voltage = +5.0V)
MC1648
MOTOROLA
Symbol
I E
V OH
V OL
V BIAS 1
V P–P
Vdc
f max 2
Temperature
Temperature
@ Test
Q11
+25 C
+85 C
Power Supply Drain Current
Logic “1” Output Voltage
Logic “0” Output Voltage
Bias Voltage
Peak–to–Peak Tank Voltage
Output Duty Cycle
Oscillation Frequency
–30 C
Characteristic
Note: SOIC “D” package guaranteed –30 C to +70 C only
MC1648
Q10
V EE1
V IHmax
+1.85
7
+2.0
+1.7
D2
TEST VOLTAGE/CURRENT VALUES
POINT
BIAS
10
V ILmin
(Volts)
+1.35
+1.5
+1.2
Min
3.955
3.16
Min
–
–
–
1.6
–
Q9
TANK
–30 C
12
Typ
225
–
–
Figure 1. Circuit Schematic
4.185
Max
3.4
1.9
–
Q7
Max
Q8
–
–
–
V CC
+5.0
+5.0
+5.0
V CC2
Q6
14
4.04
1.45
Min
3.2
Min
200
–
V EE
–
–
8
+25 C
2
D1
Typ
400
225
50
Max
4.25
3.43
1.75
AGC
41
5
mAdc
–5.0
–5.0
–5.0
I L
Max
–
–
–
Q5
4.11
3.22
Min
1.3
–
Min
–
–
–
+85 C
3.475
Typ
225
Max
4.36
Q4
1.6
–
–
–
Max
–
–
–
mAdc
Unit
Q3
Vdc
Vdc
Vdc
MHz
Unit
mV
%
Q2
Inputs and outputs open
V ILmin to Pin 12, I L @ Pin 3
V IHmax to Pin 12, I L @ Pin 3
V ILmin to Pin 12
See Figure 3
Condition
V CC1
1
Q1
Condition
BR1334 — Rev 4
HIPERCOMM
3
OUTPUT