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Figure 1. IF AGC Filter Voltage versus
2.5
V CC = 5.0 V
f C = 45.75 MHz
2.0
RF AGC Delay, Pin 15, Open
T A = 25 C
1.5
1.0
0.5
0
0.01
CARRIER DIFFERENTIAL INPUT VOLTAGE (mVrms)
1000
100
10
1.0
0.1
0.01
41
42
Figure 5. PLL Filter Voltage versus
4.8
V CC = 5.0 V
f VCO = 22.875 MHz
C19, C20 = 33 pF
4.0
T A = 25 C
3.2
2.4
1.6
–2.0
MOTOROLA ANALOG IC DEVICE DATA
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Elcodis.com
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Carrier Differential Input Voltage
0.1
1.0
10
Figure 3. VCO Characteristics
Hold–In Range
Sweep Capture Range
Lock–In Range
V CC = 5.0 V
f VCO = 22.875 MHz
C19, C20 = 33 pF
T A = 25 C
43
44
45
46
CARRIER FREQUENCY (MHz)
Carrier Frequency Change
–1.0
0
1.0
CARRIER FREQUENCY CHANGE (MHz)
MC44302A
Figure 2. Carrier Differential Input Voltage versus
1000
V CC = 5.0 V
f C = 45.75 MHz
T A = 25 C
100
10
Input
Overload
Region
1.0
0.1
100
1000
1.4
Figure 4. VCO Free–Running and Offset
Frequency Change versus Supply Voltage
100
f VCO = 22.875 MHz
C19, C20 = 33 pF
T A = 25 C
50
0
–50
–100
–150
47
48
4.5
2.0
1.0
0
–1.0
–2.0
2.0
–2.0
RF AGC Takeover Threshold
1.6
1.8
2.0
RF AGC TAKEOVER THRESHOLD, PIN 15 (V)
Readings are taken at five minute intervals
allowing the die temperature to stabilize.
4.7
4.9
5.1
V CC , SUPPLY VOLTAGE (V)
Figure 6. AFT Output Current
versus Carrier Frequency Change
Pin 12 = Gnd
V CC = 5.0 V
f VCO = 22.875 MHz
C19, C20 = 33 pF
Pin 11 = 2.5 V
T A = 25 C
Pin 12 = V CC
–1.0
0
CARRIER FREQUENCY CHANGE (MHz)
2.2
2.4
100
∆f offset
50
∆f VCO
0
–50
–100
–150
5.3
5.5
1.0
2.0
5
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