40 mF

22 F

1 k

10 k

100

REF61xx

VIN

EN

GND

OUT_F

2-Pole High-Pass

4-Pole Low-Pass

0.1-Hz to 10-Hz Filter

To Scope

0.1 F

OUT_S

GND_F

GND_S

+

Copyright © 2016, Texas Instruments Incorporated

Power

Supply

Time (2 s/div)

C021

18

REF6125, REF6130, REF6133, REF6141, REF6145, REF6150

SBOS747B – MAY 2016 – REVISED AUGUST 2016

www.ti.com

Product Folder Links: REF6125 REF6130 REF6133 REF6141 REF6145 REF6150

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Copyright © 2016, Texas Instruments Incorporated

8.4 1/f Noise Performance

Typical 0.1-Hz to 10-Hz voltage noise for the REF6125 is shown in Figure 47. The 1/f noise scales with output

voltage, but remains 3 µVPP/V for all the variants. Peak-to-peak noise measurement setup is shown in Figure 48.

Figure 47. 0.1-Hz to 10-Hz Noise

Figure 48. 0.1-Hz to 10-Hz Noise Measurement Setup