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PDF ( 数据手册 , 数据表 ) ADR225

零件编号 ADR225
描述 Micropower 2.5 V Reference
制造商 Analog Devices
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ADR225 数据手册, 描述, 功能
Data Sheet
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
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.
High Temperature, Low Drift,
Micropower 2.5 V Reference
ADR225
PIN CONFIGURATION
NC 1
8 NC
VS 2 ADR225 7 NC
NC 3 TOP VIEW 6 OUTPUT
(Not to Scale)
GND 4
5 NC
NOTES
1. NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
Figure 1. Pin Configuration for SOIC and FLATPACK Packages
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.
Rev. B
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com







ADR225 pdf, 数据表
Data Sheet
1.0
–40°C
0.9
+25°C
+175°C
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 2 4 6 8 10
LOAD CURRENT (mA)
Figure 15. Dropout Voltage vs. Load Current (ILOAD)
12
2.508
2.506
UNIT 1
UNIT 3
UNIT 5
2.504
2.502
2.500
2.498
2.496
40
55 70 85 100 115 130 145 160
TEMPERATURE (°C)
Figure 16. Thermal Hysteresis, ILOAD = 0 mA
175
VIN = 2V/DIV
COUT = 1µF
NO LOAD
1 VOUT = 1V/DIV
2
CH1 2V BW CH2 1V
M100µs
A CH1 4.4V
Figure 17. Power-On Response (see Figure 25)
ADR225
1.0
–40°C
0.9 +25°C
+210°C
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 2 4 6 8 10 12
LOAD CURRENT (mA)
Figure 18. Dropout Voltage vs. Load Current (ILOAD), FLATPACK Package
2.540
2.535
2.530
2.525
2.520
2.515
2.510
2.505
2.500
2.495
25 40 55 70 85 100 115 130 145 160 175 190 205
TEMPERATURE (°C)
Figure 19. Thermal Hysteresis, ILOAD = 0 mA, FLATPACK Package
VIN = 5V/DIV
CIN = COUT = 1µF
RL = 10kΩ
10V
5V
1 0V
VOUT = 200mV/DIV
2
CH1 5V BW CH2 200mV
M200µs
A CH1 7.3V
Figure 20. Line Transient Response (see Figure 25)
Rev. B | Page 7 of 12














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