ADR434 Analog Devices, ADR434 Datasheet

ADR434

Manufacturer Part Number

ADR434

Description

Manufacturer

Analog Devices

Datasheets

1.ADR430.pdf (24 pages)

2.ADR434.pdf (24 pages)

Specifications of ADR434

Case

SOP8

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FEATURES

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

Load regulation: 15 ppm/mA

Line regulation: 20 ppm/V

Wide operating range

High output source and sink current: +30 mA and −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

GENERAL DESCRIPTION

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

lower supply voltage headroom (2 V) than buried Zener

references. Buried Zener references require more than 5 V

headroom for operation. 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 8-lead narrow

SOIC packages. All versions are specified over the extended

industrial temperature range of −40°C to +125°C.

Rev. D

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

A Grade: 10 ppm/°C maximum

B Grade: 3 ppm/°C maximum

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

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439

Ultralow Noise XFET Voltage References

with Current Sink and Source Capability

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

Table 1. Selection Guide

Model

ADR430A

ADR430B

ADR431A

ADR431B

ADR433A

ADR433B

ADR434A

ADR434B

ADR435A

ADR435B

ADR439A

ADR439B

Output

Voltage (V)

2.048

2.500

3.000

4.096

5.000

4.500

PIN CONFIGURATIONS

NOTES

1. NC = NO CONNECT

2. TP = TEST PIN (DO NOT CONNECT)

NOTES

1. NC = NO CONNECT

2. TP = TEST PIN (DO NOT CONNECT)

GND

Figure 1. 8-Lead MSOP (RM-8)

Figure 2. 8-Lead SOIC_N (R-8)

(Not to Scale)

ADR43x

TOP VIEW

Accuracy, ±

(mV)

1.5

5.5

TRIM

OUT

www.analog.com

Temperature

Coefficient

(ppm/°C)

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