Micropower, High Accuracy

Voltage References

ADR3425/ADR3450

Rev.

0

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FEATURES

Initial accuracy: ±0.1% (max)

Maximum temperature coefficient: 8 ppm/°C

Operating temperature range: −40°C to +125°C

Output current: +10 mA source/−3 mA sink

Low quiescent current: 100 μA (max)

Low dropout voltage: 250 mV at 2 mA

Output noise (0.1 Hz to 10 Hz): < 18 μV p-p at 2.5 V typ

6-lead SOT-23 package

APPLICATIONS

Precision data acquisition systems

High resolution data converters

Industrial instrumentation

Medical devices

Automotive controls

Battery-powered devices

PIN CONFIGURATION

GND FORCE

1

GND SENSE

2

ENABLE

3

6

5

4

ADR3425/

ADR3450

TOP VIEW

(Not to Scale)

Figure 1. 6-Lead SOT-23

GENERAL DESCRIPTION

The ADR3425/ADR3450 are low-cost, low-power, high

precision CMOS voltage references, featuring ±0.1% initial

accuracy, low operating current, and low output noise in a small

SOT-23 package.

For high accuracy, output voltage and temperature coefficient

are trimmed digitally during final assembly using Analog

Devices, Inc., patented DigiTrim® technology. Stability and

system reliability are further improved by the low output

voltage hysteresis of the device and low long-term output

voltage drift.

Furthermore, the low operating current of the device (100 μA

maximum) facilitates usage in low-power devices, while its low

output noise helps maintain signal integrity in critical signal

processing systems.

The ADR3425/ADR3450 are available in a wide range of output

voltages, all of which are specified over the industrial

temperature range of −40°C to +125°C.

Table 1. Selection Guide

Model

Output Voltage (V)

Input Voltage Range (V)

ADR3425

2.500

2.7 to 5.5

ADR3450

5.000

5.2 to 5.5

Table 2. Voltage Reference Choices from Analog Devices

(V)

Low Cost/

Low Power

Ultralow

Power

Low

Noise

High Voltage,

High Performance

0.5/1.0

ADR130

2.048

ADR360

REF191

ADR430

ADR440

2.5

ADR3425

ADR291

ADR431

ADR03

AD1582

REF192

ADR441

AD780

ADR361

3.0

AD1583

REF193

ADR433

ADR06

ADR363

ADR443

AD780

3.3

ADR366

REF196

4.096

AD1584

ADR292

ADR434

ADR364

REF198

ADR444

5.0

ADR3450

ADR293

ADR435

ADR02

AD1585

REF195

ADR445

AD780

ADR365

AD586

10.0

ADR01

AD587