Micropower, High Accuracy

Voltage References

ADR3412/ADR3420/ADR3425/ADR3430/ADR3433/ADR3440/ADR3450

Rev. B

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FEATURES

Initial accuracy: ±0.1% (maximum)

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 (maximum)

Low dropout voltage: 250 mV at 2 mA

Output noise (0.1 Hz to 10 Hz): <10 μV p-p at 1.2 V (typical)

6-lead SOT-23

APPLICATIONS

Precision data acquisition systems

Industrial instrumentation

Medical devices

Battery-powered devices

PIN CONFIGURATION

GND FORCE

1

GND SENSE

2

ENABLE

3

6

5

4

ADR34xx

TOP VIEW

(Not to Scale)

Figure 1. 6-Lead SOT-23

GENERAL DESCRIPTION

The ADR3412/ADR3420/ADR3425/ADR3430/ADR3433/

ADR3440/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, and its low output noise helps maintain signal integrity

in critical signal processing systems.

These CMOS 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)

ADR3412

1.200

2.3 to 5.5

ADR3420

2.048

2.3 to 5.5

ADR3425

2.500

2.7 to 5.5

ADR3430

3.000

3.2 to 5.5

ADR3433

3.300

3.5 to 5.5

ADR3440

4.096

4.3 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 Perfor-

mance

0.5/1.0

ADR130

1.2

ADR3412

ADR280

2.048

ADR360

REF191

ADR430

ADR3420

ADR440

2.5

ADR3425

ADR291

ADR431

ADR03

AD1582

REF192

ADR441

AD780

ADR361

3.0

ADR3430

REF193

ADR433

ADR06

AD1583

ADR363

ADR443

AD780

3.3

ADR366

ADR3433

REF196

4.096

ADR3440

ADR292

ADR434

AD1584

ADR364

REF198

ADR444

5.0

ADR3450

ADR293

ADR435

ADR02

AD1585

REF195

ADR445

ADR365

AD586

10.0

ADR01

AD587