Datasheet

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− 1
− 2
− 4
− 5
− 6
3
− 3
0 2 4 6
1
0
2
t − Time − s
EQUIVALENT INPUT-NOISE VOLTAGE
OVER A 10-s PERIOD
4
8 10
5
6
+
−
+
−
TEST CIRCUIT FOR 0.1-Hz TO 10-Hz EQUIVALENT INPUT-NOISE VOLTAGE
f = 0.1 to 10 Hz
I
KA
= 10 mA
T
A
= 25°C
− Equivalent Input-Noise Voltage −V
n
µV
19.1 V
1 kΩ
910 Ω
500 µF
2000 µF
V
CC
V
CC
V
EE
V
EE
TL1431
(DUT)
820 Ω
16 Ω
160 kΩ
0.1 µF
16 Ω
16 Ω
1 µF
1 µF
33 kΩ
33 kΩ
2.2 µF
TLE2027
A
V
= 2 V/V
1 MΩ
CRO
TLE2027
A
V
= 10 V/mV
TL1431-EP
PRECISION PROGRAMMABLE REFERENCE
SLVS529C – APRIL 2004 – REVISED DECEMBER 2006
Figure 11.
9
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