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ADR431BR View Datasheet(PDF) - Analog Devices

Part NameADR431BR ADI
Analog Devices ADI
DescriptionUltralow Noise XFET® Voltage References with Current Sink and Source Capability
ADR431BR Datasheet PDF : 24 Pages
First Prev 11 12 13 14 15 16 17 18 19 20 Next Last
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
1.9
NO LOAD
1.7
1.5
1.3
1.1
0.9
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
Figure 15. ADR435 Minimum Headroom vs. Temperature
20
VIN = 7V TO 18V
16
12
8
4
0
–4
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
Figure 16. ADR435 Line Regulation vs. Temperature
CL = 0.01µF
NO INPUT CAPACITOR
VO = 1V/DIV
VIN = 2V/DIV
TIME = 4µs/DIV
Figure 18. ADR431 Turn-On Response, 0.01 μF Load Capacitor
VO = 1V/DIV
CIN = 0.01µF
NO LOAD
VIN = 2V/DIV
TIME = 4µs/DIV
Figure 19. ADR431 Turn-Off Response
CIN = 0.01µF
NO LOAD
VO = 1V/DIV
BYPASS CAPACITOR = 0µF
LINE
INTERRUPTION
VIN = 500mV/DIV
VIN = 2V/DIV
TIME = 4µs/DIV
Figure 17. ADR431 Turn-On Response
VO = 50mV/DIV
TIME = 100µs/DIV
Figure 20. ADR431 Line Transient Response
Rev. J | Page 13 of 24
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GENERAL DESCRIPTION
The ADR43x series is a family of XFET voltage references featuring low noise, high accuracy, and low temperature drift performance. Using ADI’s patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology, the ADR43x’s voltage change versus temperature nonlinearity is minimized.

FEATURES
Low noise (0.1 Hz to 10 Hz): 3.5 µV p-p @ 2.5 V output
No external capacitor required
Low temperature coefficient
   A Grade: 10 ppm/°C max
   B Grade: 3 ppm/°C max
Load regulation: 15 ppm/mA
Line regulation: 20 ppm/V
Wide operating range
   ADR430: 4.1 V to 18 V
   ADR431: 4.5 V to 18 V
   ADR433: 5.0 V to 18 V
   ADR434: 6.1 V to 18 V
   ADR435: 7.0 V to 18 V
   ADR439: 6.5 V to 18 V
High output current: +30 mA/−20 mA
Wide temperature range: −40°C to +125°C

APPLICATIONS
Precision data acquisition systems
High resolution data converters
Medical instruments
Industrial process control systems
Optical control circuits
Precision instruments

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