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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Current page: 1 of 24
Download datasheet (869Kb)

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

Load regulation: 15 ppm/mA

Line regulation: 20 ppm/V

Wide operating range

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

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.

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 series has the capability to source up to 30 mA

and sink up to 20 mA of output current. 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 the 8-lead mini SOIC and 8-lead SOIC packages.

Rev. B

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 max

B Grade: 3 ppm/°C max

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

Ultralow Noise XFET

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439

with Current Sink and Source Capability

All versions are specified over the extended industrial tempera-

ture range (−40°C to +125°C).

Table 1. Selection Guide

Model

ADR430B

ADR430A

ADR431B

ADR431A

ADR433B

ADR433A

ADR434B

ADR434A

ADR435B

ADR435A

ADR439B

ADR439A

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

Tel: 781.329.4700

Fax: 781.326.8703

2.048

2.500

3.000

4.096

5.000

4.500

OUT

GND

PIN CONFIGURATIONS

(V)

NC = NO CONNECT

Figure 1. 8-Lead MSOP

Figure 2. 8-Lead SOIC

Voltage References

(Not to Scale)

Accuracy

(mV)

±1

±3

±1

±3

±1.4

±4

±1.5

±5

±2

±6

±2

±5.4

ADR43x

TOP VIEW

(RM Suffix)

(R Suffix)

Temperature Coefficient

(ppm/°C)

TRIM

OUT

www.analog.com

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