TL431, TL431A, TL431B
TL432, TL432A, TL432B
SLVS543M –AUGUST 2004–REVISED JULY 2012
www.ti.com
EQUIVALENT INPUT NOISE VOLTAGE
OVER A 10-S PERIOD
6
5
4
3
2
1
0
−1
−2
−3
−4
−5
−6
f = 0.1 to 10 Hz
I
KA
= 10 mA
= 25°C
T
A
0
1
2
3
4
5
6
7
8
9
10
t − Time − s
19.1 V
1 kΩ
910 Ω
500 µF
2000 µF
V
CC
V
CC
1 µF
TL431
(DUT)
TLE2027
= 10 V/mV
A
V
+
−
22 µF
TLE2027
To
Oscilloscope
820 Ω
16 Ω
+
−
16 kΩ
16 kΩ
1 µF
160 kΩ
33 kΩ
33 kΩ
A
V
= 2 V/V
0.1 µF
V
EE
V
EE
Figure 14.
24
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