CD74HC4046A Datasheet, PDF (15/28 Pages) Texas Instruments – High-Speed CMOS Logic Phase-Locked Loop with VCO

CD54HC4046A, CD74HC4046A, CD54HCT4046A, CD74HCT4046A
Typical Performance Curves (Continued)
20 VCO_IN = 0.5 V_CC
C1 = 50pF, V_CC = 4.5V
16 _{R2 = OPEN}
12
8
R1 = 2.2M
R1 = 220K
4
0
-4
R1 = 2.2K
-8
-12
-75 -50 -25 0 25 50 75 100 125 150
AMBIENT TEMPERATURE, T_A (^oC)
FIGURE 23. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (V_CC = 4.5V)
20
VCO_IN = 0.5 V_CC
16 C1 = 50pF, VCC = 5.5V
R2 = OPEN
12
R1 = 3M
8
R1 = 300K
4
0
R1 = 3K
-4
-8
-12
-75 -50 -25 0 25 50 75 100 125 150
AMBIENT TEMPERATURE, T_A (^oC)
FIGURE 25. HCT4046A TYPICAL CHANGE IN VCO
FREQUENCY vs AMBIENT TEMPERATURE AS A
FUNCTION OF R1
16 VCO_IN = 0.5 V_CC
C1 = 50pF, V_CC = 6.0V
12 R2 = OPEN
R1 = 3M
8
R1 = 300K
4
0
-4
R1 = 3K
-8
-12
-75 -50 -25 0 25 50 75 100 125 150
AMBIENT TEMPERATURE, T_A (^oC)
FIGURE 24. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (V_CC = 6V)
20 VCO_IN = 0.5 V_CC
C1 = 50pF, V_CC = 4.5V
16 _{R2 = OPEN}
R1 = 2.2M
12
8
R1 = 220K
4
0
-4
R1 = 2.2K
-8
-12
-75 -50 -25 0 25 50 75 100 125 150
AMBIENT TEMPERATURE, T_A (^oC)
FIGURE 26. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (V_CC = 4.5V)
15