LM285D-2-5
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Texas Instruments LM285D-2-5

Manufacturer No:
LM285D-2-5
Manufacturer:
Texas Instruments
Package:
Tube
Description:
IC VREF SHUNT 1.5% 8SOIC
Delivery:
Payment:
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Product Introduction

Overview

The LM285D-2.5, produced by Texas Instruments, is a micropower, two-terminal band-gap voltage reference diode. This device is part of the LMx85-2.5 series and is designed to operate over a wide current range of 20 μA to 20 mA. It features exceptionally low dynamic impedance, low noise, and stable operation over time and temperature. The LM285D-2.5 is particularly useful in micropower circuitry, such as portable instrumentation, regulators, and other analog circuitry where extended battery life is crucial.

Key Specifications

ParameterMinTypMaxUnit
Reference Voltage (VZ)2.4622.52.538V
Average Temperature Coefficient of Reference Voltage20ppm/°C
Operating Current Range20 μA20 mA
Reverse Current (IR)30 mA
Forward Current (IF)10 mA
Junction Temperature (TJ)150 °C
Storage Temperature Range-65 °C150 °C
Operating Ambient Temperature Range-40 °C85 °C

Key Features

  • Operating current range of 20 μA to 20 mA
  • 1.5% and 3% initial voltage tolerance
  • Very low power consumption
  • Exceptionally low dynamic impedance
  • Good temperature stability and low noise
  • On-chip trimming for tight voltage tolerance
  • Capable of handling capacitive loading
  • Available in various packages including SOIC, TO-92, and TSSOP

Applications

  • Portable meter references
  • Portable test instruments
  • Battery-operated systems
  • Current-loop instrumentation
  • Panel meters
  • Thermocouple cold-junction compensators
  • Generating reference voltage with a constant current source

Q & A

  1. What is the reference voltage of the LM285D-2.5? The reference voltage is 2.5 V, with a tolerance range of 2.462 V to 2.538 V.
  2. What is the operating current range of the LM285D-2.5? The operating current range is from 20 μA to 20 mA.
  3. What are the key features of the LM285D-2.5? Key features include low dynamic impedance, good temperature stability, low noise, and very low power consumption.
  4. What are the typical applications of the LM285D-2.5? Typical applications include portable meter references, portable test instruments, battery-operated systems, and current-loop instrumentation.
  5. What is the junction temperature limit for the LM285D-2.5? The junction temperature limit is 150 °C.
  6. What is the storage temperature range for the LM285D-2.5? The storage temperature range is from -65 °C to 150 °C.
  7. How does the LM285D-2.5 handle capacitive loading? The device is designed to be exceptionally tolerant of capacitive loading, making it easier to use in most reference applications.
  8. What are the available packages for the LM285D-2.5? The device is available in SOIC, TO-92, and TSSOP packages.
  9. What is the average temperature coefficient of the reference voltage? The average temperature coefficient of the reference voltage is 20 ppm/°C.
  10. How does the LM285D-2.5 contribute to extended battery life in devices? The extremely low power drain of the LM285D-2.5 makes it useful for micropower circuitry, contributing to extended battery life in portable devices.

Product Attributes

Reference Type:Shunt
Output Type:Fixed
Voltage - Output (Min/Fixed):2.5V
Voltage - Output (Max):- 
Current - Output:20 mA
Tolerance:±1.5%
Temperature Coefficient:20ppm/°C Typical
Noise - 0.1Hz to 10Hz:- 
Noise - 10Hz to 10kHz:120µVrms
Voltage - Input:- 
Current - Supply:- 
Current - Cathode:20 µA
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
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Similar Products

Part Number LM285D-2-5 LM285DR-2-5 LM285D-2.5
Manufacturer Texas Instruments Texas Instruments onsemi
Product Status Active Active Obsolete
Reference Type Shunt Shunt Shunt
Output Type Fixed Fixed Fixed
Voltage - Output (Min/Fixed) 2.5V 2.5V 2.5V
Voltage - Output (Max) - - -
Current - Output 20 mA 20 mA 20 mA
Tolerance ±1.5% ±1.5% ±1.5%
Temperature Coefficient 20ppm/°C Typical 20ppm/°C Typical 80ppm/°C Typical
Noise - 0.1Hz to 10Hz - - -
Noise - 10Hz to 10kHz 120µVrms 120µVrms 120µVrms
Voltage - Input - - -
Current - Supply - - -
Current - Cathode 20 µA 20 µA 30 µA
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA)
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC 8-SOIC 8-SOIC

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