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REF4132 ACTIVE 12-ppm/°C low-noise low-power precision voltage reference The new REF4132 offers lower 12ppm/°C temperature drift, higher initial accuracy, and the same pinout & package as LM4132.

Product details

VO (V) 1.8, 2.048, 2.5, 3, 3.3, 4.096 Initial accuracy (Max) (%) 0.05, 0.1, 0.2, 0.4 Temp coeff (Max) (ppm/ degree C) 10, 20, 30 Vin (Min) (V) 2.2 Vin (Max) (V) 5.5 Iq (Typ) (uA) 60 Rating Catalog Features Enable pin Iout/Iz (Max) (mA) 20 Operating temperature range (C) -40 to 125 Shutdown current (ISD) (Typ) (uA) 3
VO (V) 1.8, 2.048, 2.5, 3, 3.3, 4.096 Initial accuracy (Max) (%) 0.05, 0.1, 0.2, 0.4 Temp coeff (Max) (ppm/ degree C) 10, 20, 30 Vin (Min) (V) 2.2 Vin (Max) (V) 5.5 Iq (Typ) (uA) 60 Rating Catalog Features Enable pin Iout/Iz (Max) (mA) 20 Operating temperature range (C) -40 to 125 Shutdown current (ISD) (Typ) (uA) 3
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
  • Output Initial Voltage Accuracy: 0.05%
  • Low Temperature Coefficient: 10 ppm/°C
  • Low Supply Current: 60 µA
  • Enable Pin Allowing a 3-µA Shutdown Mode
  • 20-mA Output Current
  • Voltage Options: 1.8 V, 2.048 V, 2.5 V, 3 V, 3.3 V, 4.096 V
  • Custom Voltage Options Available (1.8 V to 4.096 V)
  • VIN Range of VREF + 400 mV to 5.5 V at 10 mA
  • Stable With Low-ESR Ceramic Capacitors
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
  • Output Initial Voltage Accuracy: 0.05%
  • Low Temperature Coefficient: 10 ppm/°C
  • Low Supply Current: 60 µA
  • Enable Pin Allowing a 3-µA Shutdown Mode
  • 20-mA Output Current
  • Voltage Options: 1.8 V, 2.048 V, 2.5 V, 3 V, 3.3 V, 4.096 V
  • Custom Voltage Options Available (1.8 V to 4.096 V)
  • VIN Range of VREF + 400 mV to 5.5 V at 10 mA
  • Stable With Low-ESR Ceramic Capacitors

The LM4132 family of precision voltage references performs comparable to the best laser-trimmed bipolar references, but in cost-effective CMOS technology. The key to this breakthrough is the use of EEPROM registers for correction of curvature, temperature coefficient (tempco), and accuracy on a CMOS band-gap architecture allowing package-level programming to overcome assembly shift. The shifts in voltage accuracy and tempco during assembly of die into plastic packages limit the accuracy of references trimmed with laser techniques.

Unlike other LDO references, the LM4132 can deliver up to 20 mA and does not require an output capacitor or buffer amplifier. These advantages along with the SOT-23 packaging are important for space-critical applications.

Series references provide lower power consumption than shunt references, because 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 LM4132 ideal for battery-powered solutions.

The LM4132 is available in five grades (A, B, C, D and E) for greater flexibility. The best grade devices (A) have an initial accuracy of 0.05% with a specified temperature coefficient of 10 ppm/°C or less, while the lowest grade devices (E) have an initial accuracy of 0.5% and a tempco of 30 ppm/°C.

The LM4132 family of precision voltage references performs comparable to the best laser-trimmed bipolar references, but in cost-effective CMOS technology. The key to this breakthrough is the use of EEPROM registers for correction of curvature, temperature coefficient (tempco), and accuracy on a CMOS band-gap architecture allowing package-level programming to overcome assembly shift. The shifts in voltage accuracy and tempco during assembly of die into plastic packages limit the accuracy of references trimmed with laser techniques.

Unlike other LDO references, the LM4132 can deliver up to 20 mA and does not require an output capacitor or buffer amplifier. These advantages along with the SOT-23 packaging are important for space-critical applications.

Series references provide lower power consumption than shunt references, because 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 LM4132 ideal for battery-powered solutions.

The LM4132 is available in five grades (A, B, C, D and E) for greater flexibility. The best grade devices (A) have an initial accuracy of 0.05% with a specified temperature coefficient of 10 ppm/°C or less, while the lowest grade devices (E) have an initial accuracy of 0.5% and a tempco of 30 ppm/°C.

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Technical documentation

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Type Title Date
* Data sheet LM4132, LM4132-Q1 SOT-23 Precision Low Dropout Voltage Reference datasheet (Rev. G) 13 Oct 2016
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
White paper Voltage reference selection basics white paper (Rev. A) 23 Oct 2018
Application note LM4132, LM4132-Q1 Pin FMEA 12 Mar 2018
Technical article Find the "Goldilocks" voltage reference for your application 02 Sep 2016
Technical article A Reference for Voltage References 10 Aug 2014

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SOT-23 (DBV) 5 View options

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