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LM2903B-Q1 ACTIVE Automotive, dual, differential, commodity comparator Pin-to-pin upgrade with increased performance with a wider voltage range.

Product details

Number of channels (#) 2 Output type Open-collector Propagation delay time (µs) 1.3 Vs (Max) (V) 30 Vs (Min) (V) 2 Vos (offset voltage @ 25 C) (Max) (mV) 7 Iq per channel (Typ) (mA) 0.4 Input bias current (+/-) (Max) (nA) 50 Rail-to-rail Out Rating Automotive Operating temperature range (C) -40 to 125, -40 to 150 Features VICR (Max) (V) 30.5 VICR (Min) (V) 0
Number of channels (#) 2 Output type Open-collector Propagation delay time (µs) 1.3 Vs (Max) (V) 30 Vs (Min) (V) 2 Vos (offset voltage @ 25 C) (Max) (mV) 7 Iq per channel (Typ) (mA) 0.4 Input bias current (+/-) (Max) (nA) 50 Rail-to-rail Out Rating Automotive Operating temperature range (C) -40 to 125, -40 to 150 Features VICR (Max) (V) 30.5 VICR (Min) (V) 0
SOIC (D) 8 19 mm² 4.9 x 3.9 SOIC (D) 8 19 mm² 3.91 x 4.9 TSSOP (PW) 8 19 mm² 3 x 6.4 VSSOP (DGK) 8 15 mm² 3 x 4.9
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 0: –40°C to 150°C ambient operating temperature range (LM2903E-Q1)
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
    • Device HBM ESD classification level H1C
    • Device CDM ESD classification level C4B
  • Improved 2 kV HBM ESD for "B" device
  • Tri-Temp testing available for "B" device
  • Single supply or dual supplies
  • Low supply-current independent of supply voltage 200 uA typical per comparator ("B" Versions)
  • Low input bias current 3.5 nA typical ("B" device)
  • Low input offset current 0.5 nA typ ("B" device)
  • Low input offset voltage ±0.37 mV typ ("B" device)
  • Common-mode input voltage range includes ground
  • Differential input voltage range equal to maximum-rated supply voltage ±36 V
  • Output compatible with TTL, MOS, and CMOS
  • Functional Safety-Capable
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 0: –40°C to 150°C ambient operating temperature range (LM2903E-Q1)
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
    • Device HBM ESD classification level H1C
    • Device CDM ESD classification level C4B
  • Improved 2 kV HBM ESD for "B" device
  • Tri-Temp testing available for "B" device
  • Single supply or dual supplies
  • Low supply-current independent of supply voltage 200 uA typical per comparator ("B" Versions)
  • Low input bias current 3.5 nA typical ("B" device)
  • Low input offset current 0.5 nA typ ("B" device)
  • Low input offset voltage ±0.37 mV typ ("B" device)
  • Common-mode input voltage range includes ground
  • Differential input voltage range equal to maximum-rated supply voltage ±36 V
  • Output compatible with TTL, MOS, and CMOS
  • Functional Safety-Capable

The LM2903B-Q1 device is the next generation version of the industry-standard LM2903-Q1 comparator family. This next generation family provides outstanding value for cost-sensitive applications, with features including lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, lower propagation delay, and improved 2kV ESD performance with drop-in replacement convenience.

All devices consist of two independent voltage comparators that are designed to operate over a wide range of voltages. Operation from dual supplies also is possible as long as the difference between the two supplies is within 2 V to 36 V, and VCC is at least 1.5 V more positive than the input common-mode voltage. The outputs can be connected to other open-collector outputs.

The LM2903-Q1 and LM2903B-Q1 are qualified for the AEC-Q100 Grade 1 temperature range of -40°C to +125°C. The LM2903E-Q1 is Qualified for the Grade 0 extended temperature range of -40°C to +150°C.

The LM2903B-Q1 device is the next generation version of the industry-standard LM2903-Q1 comparator family. This next generation family provides outstanding value for cost-sensitive applications, with features including lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, lower propagation delay, and improved 2kV ESD performance with drop-in replacement convenience.

All devices consist of two independent voltage comparators that are designed to operate over a wide range of voltages. Operation from dual supplies also is possible as long as the difference between the two supplies is within 2 V to 36 V, and VCC is at least 1.5 V more positive than the input common-mode voltage. The outputs can be connected to other open-collector outputs.

The LM2903-Q1 and LM2903B-Q1 are qualified for the AEC-Q100 Grade 1 temperature range of -40°C to +125°C. The LM2903E-Q1 is Qualified for the Grade 0 extended temperature range of -40°C to +150°C.

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Technical documentation

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Type Title Date
* Data sheet LM2903-Q1 and LM2903B-Q1 Automotive Dual Comparators datasheet (Rev. K) PDF | HTML 05 Aug 2022
Application note Application Design Guidelines for LM339, LM393, TL331 Family Comparators (Rev. B) 17 Aug 2021
Functional safety information LM2903-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 07 Apr 2020
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Designing Overcurrent protection for TPL7407L Peripheral Driver 05 Nov 2014

Design & development

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

Simulation model

LM2903B PSpice Model (Rev. B)

SLCJ011B.ZIP (43 KB) - PSpice Model
Simulation model

LM2903 TINA-TI SPICE Model (Rev. A)

SLCM014A.ZIP (9 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
Reference designs

TIDA-00143 — Automotive 60W Brushless DC (BLDC) Motor Drive

This TIDA-00143 reference design is a BLDC motor controller and is designed to operate from a single 12V (nominal) power supply which can vary over a wide range of voltages as found in typical automotive applications.  The board is designed to drive motors in the 60W range, which require (...)
User guide: PDF
Schematic: PDF
Reference designs

TIDA-01445 — Automotive High-Voltage Interlock Reference Design

This reference design is a low BOM design that has good coverage of automotive interlock connection diagnosis. In hybrid or electric vehicles (HEV/EVs), battery management systems, traction inverters, DCDC converters, onboard chargers, and other subsystems that operate at high voltages need to (...)
Schematic: PDF
Package Pins Download
SOIC (D) 8 View options
TSSOP (PW) 8 View options
VSSOP (DGK) 8 View options

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