High Temperature, Low Drift,
Micropower 2.5 V Reference
Data Sheet
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FEATURES
Extreme high temperature operation
−40°C to +210°C, 8-lead FLATPACK
−40°C to +175°C, 8-lead SOIC
Temperature coefficient
40 ppm/°C, 8-lead FLATPACK
10 ppm/°C, 8-lead SOIC
High output current: 10 mA
Low supply current: 50 µA maximum
Initial accuracy: ±0.4% (±10 mV maximum), 8-lead SOIC
Low dropout voltage
Wide supply range: 3.3 V to 16 V
APPLICATIONS
Down-hole drilling and instrumentation
Avionics
Heavy industrial
High temperature environments
PIN CONFIGURATION
NC
1
V
S
2
NC
3
GND
4
NC
8
NC
7
OUTPUT
6
NC
5
NOTES
1. NC = NO CONNEC
T. DO NOT
CONNECT
T
O THIS PIN.
ADR225
TOP VIEW
(Not to Scale)
11525-001
Figure 1. Pin Configuration for SOIC and FLATPACK Packages
GENERAL DESCRIPTION
The ADR225 is a precision 2.5 V band gap voltage reference
specified for a high temperature operation of 175°C and 210°C.
It uses a micropower core topology and laser trimming of highly
stable, thin film resistors to achieve a temperature coefficient of
30 ppm/°C (maximum) up to 175°C and an initial accuracy of 0.4%
(±10 mV maximum). A maximum operating current of 50 µA
and a low dropout voltage allow the ADR225 to function very
well in battery-powered equipment.
The ADR225 voltage reference is offered in an 8-lead SOIC
package with an operating temperature range of −40°C to +175°C.
It is also available in an 8-lead ceramic flat pack (FLATPACK)
with an operating temperature range of −40°C to +210°C. Both
devices are designed for robustness at extreme temperatures
and are qualified for 1000 hours of operation at the maximum
temperature rating.
The ADR225 is a member of a growing series of high temperature
qualified products offered by Analog Devices, Inc. For a complete
selection table of the available high temperature products, see
the high temperature product list and qualification data available
at www.analog.com/hightemp.
