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REF54 Datasheet(PDF) 20 Page - Texas Instruments

Part # REF54
Description  REF54 0.8ppm/°C Maximum Drift, 0.11ppmp-p 1/f Noise, 380μA Current, Precision Voltage Reference
PDF  44 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

REF54 Datasheet(HTML) 20 Page - Texas Instruments

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Time (Hr.)
0
400
800
1200
1600
2000
0
50
100
150
Figure 7-2. Long-Term Stability SOIC 2000 Hours
(VREF)
Time (Hours)
0
1500
3000
4500
6000
7500
-100
-75
-50
-25
0
25
50
75
100
Avg
Avg+Std dev
Avg-Std dev
Figure 7-3. Long-Term Stability SOIC 7500 Hours
(VREF)
Time (Hours)
0
400
800
1200
1600
2000
-15
-10
-5
0
5
10
15
Avg
Avg+Std dev
Avg-Std dev
Figure 7-4. Long-Term Stability FKH 2000 Hours
(VREF)
Time (Hours)
0
1800
3600
5400
7200
9000
-15
-10
-5
0
5
10
15
Avg
Avg+Std dev
Avg-Std dev
Figure 7-5. Long-Term Stability FKH 9000 Hours
(VREF)
7.3 Noise Performance
7.3.1 1/f Noise
1/f noise, also known as flicker noise, is dominant mostly in the lower frequency bands. REF54 data sheet
specifies flicker noise for 0.1Hz to 10Hz frequency band where 1/f noise has maximum power. Since the 1/f
noise is an extremely low value, the frequency of interest is amplified and filtered through a precise band filter
with very low noise floor as shown in Figure 7-6.
REF54
SNVSCN7D – NOVEMBER 2023 – REVISED JUNE 2026
www.ti.com
20
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Copyright © 2026 Texas Instruments Incorporated
Product Folder Links: REF54



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