Micropower, High Accuracy

Voltage References

Data Sheet

ADR3525/ADR3530/ADR3533/ADR3540/ADR3550

Rev. 0

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FEATURES

Maximum temperature coefficient: 5 ppm/°C (B grade)

Low long-term drift (LTD): 30 ppm (initial 1 khr typical)

Initial output voltage error: ±0.1% (maximum)

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 voltage noise (0.1 Hz to 10 Hz): 29 μV p-p at

4.096 V (typical)

Qualified for automotive applications

APPLICATIONS

Automotive battery monitors

Portable instrumentation

Process transmitters

Remote sensors

Medical instrumentation

PIN CONFIGURATION

8

7

6

NC

5

NOTES

1. NC = NO CONNECT. DO NOT

CONNECT TO THIS PIN.

ADR35xx

TOP VIEW

(Not to Scale)

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

GENERAL DESCRIPTION

The ADR3525W, ADR3530W, ADR3533W, ADR3540W, and

ADR3550W are low cost, low power, high precision CMOS

voltage references, featuring a maximum temperature coeffi-

cient (TC) of 5 ppm/°C (B grade), 8 ppm/°C (A grade), low

operating current, and low output noise in an 8-lead MSOP

package. For high accuracy, the output voltage and temperature

coefficient are trimmed digitally during final assembly using the

Analog Devices, Inc., patented DigiTrim® technology.

The low output voltage hysteresis and low long-term output

voltage drift improve lifetime system accuracy.

These CMOS references are available in five output voltages, all

of which are specified over the automotive temperature range of

−40°C to +125°C.

Table 1. Selection Guide

Model

Output Voltage (V)

Input Voltage Range (V)

ADR3525W

2.500

2.7 to 5.5

ADR3530W

3.000

3.2 to 5.5

ADR3533W

3.300

3.5 to 5.5

ADR3540W

4.096

4.3 to 5.5

ADR3550W

5.000

5.2 to 5.5