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Product details

Parameters

VO (V) 1.8, 2.048, 2.5, 3, 3.3, 4.096 Initial accuracy (Max) (%) 0.1, 0.2, 0.5, 1 Temp coeff (Max) (ppm/ degree C) 100, 75 Rating Catalog Vin (Min) (V) 2.2 Vin (Max) (V) 5.5 Iq (Typ) (uA) 60 Features Enable pin Iout/Iz (Max) (mA) 20 Operating temperature range (C) -40 to 125 Shutdown current (Typ) (uA) 3 open-in-new Find other Series voltage references

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Series voltage references

Features

  • Output Voltage Initial Accuracy 0.1%
  • Low Temperature Coefficient 75 ppm/°C
  • Low Supply Current, 60 µA
  • Enable Pin Allowing a 3 µA Shutdown Mode
  • Up to 20 mA Output Current
  • Voltage Options 1.8V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V
  • Custom Voltage Options Available (1.8V to 4.096V)
  • VIN Range of VREF + 400 mV to 5.5V @10 mA
  • Stable with Low ESR Ceramic Capacitors
  • 5-Pin SOT-23 Package
  • −40°C to 125°C Junction Temperature Range
  • LM4128AQ/BQ/CQ/DQ are AEC-Q100 Grade 1 Qualified and are Manufactured on an Automotive Grade Flow

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Description

Ideal for space critical applications, the LM4128 precision voltage reference is available in the SOT-23 surface-mount package. The LM4128’s advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with capacitive loads up to 10 µF, thus making the LM4128 easy to use.

Series references provide lower power consumption than shunt references, since they do not have to idle the maximum possible load current under no load conditions. This advantage, the low quiescent current (60 µA), and the low dropout voltage (400 mV) make the LM4128 ideal for battery-powered solutions.

The LM4128 is available in four grades (A, B, C, and D) for greater flexibility. The best grade devices (A) have an initial accuracy of 0.1% with ensured temperature coefficient of 75 ppm/°C or less, while the lowest grade parts (D) have an initial accuracy of 1.0% and a tempco of 100 ppm/°C.

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REF3425 ACTIVE 2.5-V low-drift low-power small-footprint series voltage reference Better temperature drift, lower noise and wider VIN for the 2.5-V output option
REF3430 ACTIVE 3-V Low-drift low-power small-footprint series voltage reference Better temperature drift, lower noise and wider VIN for the 3-V output option
REF3433 ACTIVE 3.3-V Low-drift low-power small-footprint series voltage reference Better temperature drift, lower noise and wider VIN for the 3.3-V output option
REF3440 ACTIVE 4.1-V low-drift low-power small-footprint series voltage reference Better temperature drift, lower noise and wider VIN for the 4.096V output option
Similar but not functionally equivalent to the compared device:
REF2041 ACTIVE 4.1-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference Better temperature drift, lower noise, wider VIN dual-channel device with 2.048-V and 4.096-V outputs

Technical documentation

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Type Title Date
* Datasheet LM4128/LM4128Q SOT-23 Precision Micropower Series Voltage Reference datasheet (Rev. E) Mar. 29, 2013
Application notes LM4128, LM4128-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec. 18, 2019
White papers Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
White papers Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018
Selection guides Voltage Reference Overview Jul. 26, 2013
Application notes AN-1984 LM57 Temperature Switch vs Thermistors (Rev. C) May 01, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

Features
  • Simplifies prototyping of SMT IC’s
  • Supports 6 common package types
  • Low Cost

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Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

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