Micropower, High Accuracy
Voltage References
Data Sheet
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
FEATURES
PIN CONFIGURATION
ENABLE
GND SENSE
GND FORCE
NC
1
2
3
4
8
7
6
5
V
V
V
Maximum temperature coefficient: 5 ppm/°C (B grade)
Low long-term drift (LTD): 30 ppm (initial 1 khr typical)
Initial output voltage error: 0.1ꢀ (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
IN
ADR35xx
SENSE
FORCE
OUT
OUT
TOP VIEW
(Not to Scale)
NC
NOTES
1. NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
Figure 1. 8-Lead MSOP (RM-8 Suffix)
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
GENERAL DESCRIPTION
Table 1. Selection Guide
Model Output Voltage (V)
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.
Input Voltage Range (V)
2.7 to 5.5
3.2 to 5.5
3.5 to 5.5
4.3 to 5.5
ADR3525W 2.500
ADR3530W 3.000
ADR3533W 3.300
ADR3540W 4.096
ADR3550W 5.000
5.2 to 5.5
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.
Rev. 0
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