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3

2

1

0

0

1

2

3

4

4

5

PULSE RESPONSE

6

5

6

7

TEST CIRCUIT FOR PULSE RESPONSE

Input

Output

t − Time −

µs

Pulse

Generator

f = 100 kHz

50

Ω

220

Ω

Output

GND

STABILITY BOUNDARY CONDITIONS

50

40

10

0

0.001

0.01

0.1

1

70

90

100

10

30

80

60

20

TEST CIRCUIT FOR CURVE A

TEST CIRCUIT FOR CURVES B, C, AND D

Stable

Stable

A

B

C

D

150

Ω

150

Ω

R1 =

10 k

Ω

R2

+

−

+

−

TL1431

PRECISION PROGRAMMABLE REFERENCE

SLVS062L – DECEMBER 1991 – REVISED OCTOBER 2007

Figure 14.

A.

The areas under the curves represent conditions that may cause the device to oscillate. For curves B, C, and D, R2 and V+ are

stability.

Figure 15.

Copyright © 1991–2007, Texas Instruments Incorporated

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