SLVSE73 June   2017 LM385-1.2-MIL

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
    3. 8.3 System Examples
      1. 8.3.1 Thermocouple Cold-Junction Compensator
      2. 8.3.2 Generating Reference Voltage with a Constant Current Source
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
  • YS|0
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Operating Current Range
    • LM385-1.2-MIL: 15 μA to 20 mA
  • 1% and 2% Initial Voltage Tolerance
  • Reference Impedance
    • LM385-1.2-MIL: 1 Ω maximum at 25°C
    • All devices: 1.5 Ω maximum over Full
      Temperature Range
  • Very Low Power Consumption
  • Interchangeable with Industry Standard
    LM385-1.2-MIL

2 Applications

  • Portable Meter References
  • Portable Test Instruments
  • Battery-Operated Systems
  • Current-Loop Instrumentation
  • Panel Meters

3 Description

These micropower, two-terminal, band-gap voltage references operate over a 10-μA to 20-mA current range and feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming provides tight voltage tolerance. The band-gap reference for these devices has low noise and long-term stability.

The design makes these devices exceptionally tolerant of capacitive loading and, thus, easier to use in most reference applications. The wide dynamic operating temperature range accommodates varying current supplies, with excellent regulation.

The extremely low power drain of this series makes them useful for micropower circuitry. These voltage references can be used to make portable meters, regulators, or general-purpose analog circuitry, with battery life approaching shelf life. The wide operating current range allows them to replace older references with tighter-tolerance parts.

Device Information(1)

PART NUMBER PACKAGE (PIN) BODY SIZE (NOM)
LM385-1.2-MIL SOIC (8) 4.90 mm × 3.91 mm
SOP (8) 6.20 mm × 5.30 mm
TSSOP (8) 3.00 mm × 4.40 mm
TO-226 (3) 4.30 mm × 4.30 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

LM385-1.2-MIL logic_slvs075.gif