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REF50xx Low-Noise, Very Low Drift, Wide VIN Precision Voltage Reference
SBOS410N
June 2007 – March 2025
REF50
,
REF50E
PRODUCTION DATA
CONTENTS
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REF50xx Low-Noise, Very Low Drift, Wide VIN Precision Voltage Reference
1
1
Features
2
Applications
3
Description
4
Device Comparison Table
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics REF50
6.6
Electrical Characteristics REF50EI
6.7
Typical Characteristics: REF50xxI, REF50xxAI
6.8
Typical Characteristics: REF50xxEI
7
Parameter Measurement Information
7.1
Solder Heat Shift
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Temperature Monitoring
8.3.2
Temperature Drift
8.3.3
Thermal Hysteresis
8.3.4
Noise Performance
8.3.5
Long-Term Stability
8.3.6
Output Adjustment Using the TRIM/NR Pin
8.4
Device Functional Modes
8.4.1
Basic Connections
8.4.2
Supply Voltage
8.4.3
Negative Reference Voltage
9
Applications and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
16-Bit, 250-KSPS Data Acquisition System
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.3
Application Curve
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
11.3
Power Dissipation
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Receiving Notification of Documentation Updates
12.3
Support Resources
12.4
Trademarks
12.5
Glossary
13
Revision History
14
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
D|8
MSOI002K
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbos410n_oa
sbos410n_pm
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Data Sheet
REF50xx
Low-Noise, Very Low Drift, Wide V
IN
Precision Voltage Reference
1
Features
Low temperature drift (maximum):
Enhanced-grade (New): 2.5ppm/°C
High-grade: 3ppm/°C
Standard-grade: 8ppm/°C
High accuracy (maximum):
Enhanced-grade: 0.025%
High-grade: 0.05%
Standard-grade: 0.1%
Low noise:
Enhanced-grade: 0.5μV
PP
/V
High/Standard-grade: 3μV
PP
/V
Excellent long-term stability:
22ppm after first 1000 hours (SOIC-8)
50ppm after first 1000 hours (VSSOP-8)
Wide input voltage support:
Enhanced-grade: 42V
High/Standard-grade: 18V
High-output current: ±10mA
Temperature range: -40°C to 125°C
2
Applications
Precision data acquisition systems
Semiconductor test equipment
Industrial process controls
Medical instrumentation
Pressure and
temperature transmitters
Lab and field instrumentation
