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Micropower, High Accuracy
Voltage References
Data Sheet
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
Rev. 0
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.
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Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved.
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
09594-001
ENABLE
1
GND SENSE
2
GND FORCE
3
NC
4
V
IN
8
V
OUT
SENSE
7
V
OUT
FORCE
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
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