MC74HC4046A
V =6.0 V
CC
800
V =3.0 V
CC
4.0
V =4.5 V
CC
V =3.0 V
CC
400
V =4.5 V
CC
0
V =6.0 V
CC
0
1/2 V –1.0 V
1/2 V
CC
1/2 V +1.0 V
CC
–4.0
1/2V – 500 mV
CC
1/2 V
CC
I
1/2 V + 500 mV
CC
CC
VI (V)
V (V)
Figure 10. Input Resistance at SIG , COMP with
Figure 11. Input Current at SIG , COMP with
IN IN
IN
IN
∆V = 1.0 V at Self–Bias Point
∆V = 500 mV at Self–Bias Point
I
I
DEMOD OUT
15
10
5.0
0
6.0
R1=3.0 kΩ
R1=100 kΩ
R1=300 kΩ
V
V
CC
=6.0 V R =300 k
S
CC
R1=100 kΩ
R1=300 kΩ
=6.0 V R =50 k
S
V
V
CC
=4.5 V R =300 k
S
CC
–5.0
=4.5 V R =50 k
S
V
= 3.0 V
CC
C1 = 100 pF; R2 = ∞; V
–10
–15
V
V
CC
=3.0 V R =300 k
CC
S
=1/3 V
VCOIN CC
R1=3.0 kΩ
=3.0 V R =50 k
S
–100
–50
0
50
100
150
0
3.0
VCO (V)
6.0
AMBIENT TEMPERATURE (°C)
0
IN
Figure 12. Offset Voltage at Demodulator Output as
a Function of VCO and R
Figure 13A. Frequency Stability versus Ambient
Temperature: V
CC
= 3.0 V
IN
S
R1=3.0 kΩ
15
10
10
R1=3.0 kΩ
R1=300 kΩ
R1=100 kΩ
8.0
6.0
4.0
2.0
R1=300 kΩ
R1=100 kΩ
5.0
0
0
–2.0
–5.0
–4.0
–6.0
V
= 4.5 V
–10
–15
V
CC
= 6.0 V
CC
C1 = 100 pF; R2 = ∞; V
–8.0
–10
–100
= 1/2 V
C1 = 100 pF; R2 = ∞; V =1/2 V
VCOIN CC
VCOIN
CC
–50
0
50
100
150
–100
–50
0
50
100
150
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (°C)
Figure 13B. Frequency Stability versus Ambient
Temperature: V = 4.5 V
Figure 13C. Frequency Stability versus Ambient
Temperature: V = 6.0 V
CC
CC
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