ADR433 Ultralow Noise XFET® 3.0V Voltage Reference w/Current Sink and Source Capability

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

The ADR43x series is a family of XFET voltage references featuring low noise, high accuracy, and low temperature drift performance. Using Analog Devices, Inc., patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology, voltage change vs. temperature nonlinearity in the ADR43x is minimized.

The XFET references operate at lower current (800 µA) and supply headroom (2 V) than buried Zener references. Buried Zener references require more than 5 V headroom for operations. The ADR43x XFET references are the only low noise solutions for 5 V systems.

The ADR43x family has the capability to source up to 30 mA of output current and sink up to 20 mA. It also comes with a trim terminal to adjust the output voltage over a 0.5% range without compromising performance.

The ADR43x is available in 8-lead MSOP and narrow SOIC packages. All versions are specified over the extended industrial temperature range of −40°C to +125°C.

Applications

Features and Benefits

Low noise (0.1 Hz to 10.0 Hz):
3.5 µV p-p @ 2.5 V output
No external capacitor required
Low temperature coefficient
A Grade: 10 ppm/°C maximum
B Grade: 3 ppm/°C maximum
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
High output source and sink current:
+30 mA and −20 mA
Wide temperature range: −40°C to +125°C

Linear Products

Voltage References

Data Sheets

Document	note
ADR430/ADR431/ADR433/ADR434/ADR435: Ultralow Noise XFET Voltage References with Current Sink and Source Capability Data Sheet (Rev. M)	PDF 1088 kB

Application Notes

Document	note
AN-713: The Effect of Long-Term Drift on Voltage References (Rev. 0)	PDF 237 kB

Product Highlight

Document	note

Frequently Asked Questions

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Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADR433ARMZ Production	8 ld MSOP	OTH 50	-40 to 125C	4.13	3.85	Y
ADR433ARMZ-REEL7 Production	8 ld MSOP	REEL 1000	-40 to 125C	0	3.85	Y
ADR433ARZ Production	8 ld SOIC	OTH 98	-40 to 125C	3.18	2.96	Y
ADR433ARZ-REEL7 Production	8 ld SOIC	REEL 1000	-40 to 125C	0	2.96	Y
ADR433BRZ Production	8 ld SOIC	OTH 98	-40 to 125C	4.74	4.41	Y
ADR433BRZ-REEL7 Production	8 ld SOIC	REEL 1000	-40 to 125C	0	4.41	Y

ADR430/ADR431/ADR433/ADR434/ADR435: Ultralow Noise XFET Voltage References with Current Sink and Source Capability Data Sheet (Rev. M) adr430

AN-713: The Effect of Long-Term Drift on Voltage References (Rev. 0) ad580