ICM7555_06 Datasheet, PDF (8/12 Pages) Intersil Corporation – General Purpose Timers

ICM7555, ICM7556
Typical Performance Curves (Continued)
8
T_A = 25°C
6
4
2
R_A = R_B = 10MΩ
C = 100pF
0
2
R_A = R_B = 10kΩ
4
C = 0.1μF
6
8
0.1
1.0
10.0
100.0
SUPPLY VOLTAGE (V)
FIGURE 10. NORMALIZED FREQUENCY STABILITY IN THE
ASTABLE MODE vs SUPPLY VOLTAGE
600
V_DD = 5V
500
400
300
200
T_A = 70°C
T_A = 25°C
100
T_A = -20°C
0
0
10
20
30
40
LOWEST VOLTAGE LEVEL OF TRIGGER PULSE (%V_DD)
FIGURE 12. PROPAGATION DELAY vs VOLTAGE LEVEL OF
TRIGGER PULSE
1.0
100m
10m
1m
100μ
10μ
1μ
100n
10n
1n
100p
10p
1p
0.1
T_A = 25°C
(R_A + 2R_B)
1kΩ
10kΩ
100kΩ
1MΩ
10MΩ
100MΩ
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
FIGURE 14. FREE RUNNING FREQUENCY vs R_A, R_B AND C
100
T_A = 25°C
V_DD = 18V
10.0
1.0
V_DD = 5V
V_DD = 2V
0.1
0.01
0.1
1.0
DISCHARGE LOW VOLTAGE (V)
10.0
FIGURE 11. DISCHARGE OUTPUT CURRENT vs DISCHARGE
OUTPUT VOLTAGE
+1.0
+0.9
+0.8
R_A = R_B = 10kΩ
C = 0.1μF
+0.7
+0.6
+0.5
V_DD = 5V
+0.4
+0.3
V_DD = 18V
+0.2
+0.1
V_DD = 2V
0 VDD = 2V
-0.1
-20
0
20
40
60
80
TEMPERATURE (°C)
FIGURE 13. NORMALIZED FREQUENCY STABILITY IN THE
ASTABLE MODE vs TEMPERATURE
1.0
100m
T_A = 25°C
10m
R_A
1m
100μ
10μ
1μ
100n
10n
1kΩ
10kΩ
100kΩ
1MΩ
10MΩ
100MΩ
1n
100p
10p
1p
100n 1μ 10μ 100μ 1m 10m 100m 1
10
TIME DELAY (s)
FIGURE 15. TIME DELAY IN THE MONOSTABLE MODE vs
R_A AND C
8
FN2867.9
August 24, 2006