
7
FN2866.4
February 9, 2007
Typical Performance Curves
FIGURE 7. SUPPLY CURRENT vs SUPPLY VOLTAGE
FIGURE 8. RECOMMENDED RANGE OF TIMING
COMPONENT VALUES FOR ACCURATE TIMING
FIGURE 9. TIMEBASE FREE RUNNING FREQUENCY vs R AND C
FIGURE 10. MINIMUM TRIGGER PULSE WIDTH vs TRIGGER
AMPLITUDE
FIGURE 11. MINIMUM RESET PULSE WIDTH vs RESET
AMPLITUDE
FIGURE 12. NORMALIZED FREQUENCY STABILITY IN THE
ASTABLE MODE vs SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
0
2
4
6
8
10
12
14
16
0
260
240
220
200
180
160
140
120
100
80
60
40
20
S
U
PPL
Y
CU
RRE
N
T
(
A)
TA = -20°C
RESET MODE
TA = +25°C
TA = +75°C
TIMING CAPACITOR, C (F)
100pF
0.01
1
10
100
1000 10,000
100
100M
10M
1M
100k
10k
1k
TIMI
NG
RESI
ST
OR,
R
(
Ω
)
0.1
0.001
RECOMMENDED RANGE OF
TIMING COMPONENT VALUES
TA = +25°C
10M
Ω
TIME BASE FREQUENCY (Hz)
0.1
1
10
100
1k
10k
100k
1M
10M
10,000
CAP
ACIT
A
N
C
E
(F)
VDD = 5.0V
TA = +25°C
100k
Ω
10k
Ω
1k
Ω
1M
Ω
1,000
100
10
1
0.1
0.01
0.001
100p
10p
1p
TRIGGER AMPLITUDE (V)
01
234
56
789
10
0
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
TRIGGE
R
PULS
E
W
IDTH
(
n
s
)
TA = +25°C
VDD = 5V
VDD = 2V
VDD = 16V
RESET AMPLITUDE (V)
0123
45678
9
10
0
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
RES
E
T
PULSE
WIDTH
(ns)
TA = 25°C
VDD = 5V
VDD = 2V
VDD = 16V
SUPPLY VOLTAGE (V)
2
1012
14
1618
20
+10.0
+8.0
+6.0
+4.0
+2.0
0.0
-2.0
-4.0
-6.0
-8.0
-10.0
NORMALIZED
FREQUENCY
DEVIA
T
ION
(%
)
TA = +25°C
R
8
6
4
C
10k
Ω
1M
Ω
1k
Ω
100k
Ω
10k
Ω
100k
Ω
0.001F
100pF
0.1F
0.001F
0.01F
ICM7242