TL431, A, B Series
Figure 8. Change in Reference Input
Voltage versus Cathode Voltage
Figure 9. Off–State Cathode Current
versus Ambient Temperature
0
–8.0
–16
–24
–32
1.0 k
I
T
= 10 mA
= 25°C
K
A
100
10
V
= 36 V
= 0 V
KA
Input
R1
V
KA
V
ref
1.0
I
K
V
Input
KA
I
off
R2
V
0.1
ref
0.01
–55
–25
0
25
50
75
100
125
0
10
20
, CATHODE VOLTAGE (V)
30
40
V
T , AMBIENT TEMPERATURE (5C)
KA
A
Figure 10. Dynamic Impedance
versus Frequency
Figure 11. Dynamic Impedance
versus Ambient Temperature
100
0.320
0.300
T
∆
= 25 C
A
1.0 k
50
V
= V
ref
KA
K
Output
K
I = 1.0 mA to 100 mA
K
∆
f
I
= 1.0 mA to 100 mA
I
≤
1.0 kHz
–
+
Output
K
0.280
0.260
0.240
0.220
0.200
Gnd
10
1.0
0.1
1.0 k
I
50
–
+
Gnd
1.0 k
10 k
100 k
f, FREQUENCY (MHz)
1.0 M
10 M
–55
–25
0
25
50
75
100
125
T , AMBIENT TEMPERATURE ( C)
A
Figure 12. Open–Loop Voltage Gain
versus Frequency
Figure 13. Spectral Noise Density
80
60
40
20
0
60
Output
I
K
50
40
30
20
10
15 k
9.0 µF
230
8.25 k
Gnd
V
= V
ref
KA
I
T
= 10 mA
K
= 25°C
A
Input
Output
I
T
= 10 mA
= 25 C
K
A
I
K
0
–10
1.0 k
10 k
100 k
1.0 M
10 M
10
100
1.0 k
f, FREQUENCY (Hz)
10 k
100 k
f, FREQUENCY (MHz)
6
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
