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LM2903QDRG4Q1

LM2903QDRG4Q1 Differential Comparator, AEC-Q100, 8-SOIC

MPNLM2903QDRG4Q1
Active

Texas Instruments LM2903QDRG4Q1, Automotive AEC-Q100, dual differential comparator, 2V to 36V supply, -40°C to 125°C, 20mA output, 8-SOIC surface mount.

$0.6000Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2903QDRG4Q1 specifications
ParameterValue
TypeDifferential
SeriesAutomotive, AEC-Q100
Output typeCMOS, MOS, Open-Collector, TTL
MountingSurface Mount
Voltage - input offset7mV @ 5V
Voltage - supply, single (Dual (±))2V ~ 36V, ±1V ~ 18V
Output current20mA
Current - quiescent2.5mA
Current - input bias0.25µA @ 5V
Operating temperature-40°C~125°C
PackageTape & Reel (TR); Cut Tape (CT)
Case8-SOIC (0.154\", 3.90mm Width)
Number of elements2

Product details

Temperature range and output flexibility

The output stage supports CMOS, MOS, open-collector, and TTL logic levels, allowing direct interface with 3.3V or 5V microcontrollers or PLC input modules without external pull-up voltage translation.

Input offset and bias — threshold accuracy in sensor circuits

Maximum input offset voltage is 7 mV at 5V, and maximum input bias current is 0.25 µA at 5V. In high-impedance sensor circuits (e.g., thermistor bridges, current-shunt monitors), the low bias current keeps the voltage error at the comparator input below 1 mV for source resistances up to 4 kΩ, preserving threshold accuracy without a buffer amplifier.

Quiescent current and output drive

Maximum quiescent current is 2.5 mA per comparator, and each output can sink or source up to 20 mA typical. The low idle current makes the part viable for always-on modules in automotive body controllers and battery-powered sensor nodes where the comparator is continuously powered.

Supplied in an 8-SOIC package (0.154" width, 3.90 mm body) with a 1.27 mm pitch.

Frequently asked questions

How can I order LM2903QDRG4Q1 or check stock?

The LM2903QDRG4Q1 is an active-production part. No stock-holding claim is made here — each order is sourced per the buyer's quantity.

Is LM2903QDRG4Q1 RoHS compliant?

The part is listed with a standard RoHS-compliant finish. The 'G4' suffix in the order code indicates TI's green/RoHS-compliant plating. No separate RoHS certificate is required for standard procurement.

Does LM2903QDRG4Q1 require external hysteresis?

Yes, like all open-loop comparators, the LM2903QDRG4Q1 does not have built-in hysteresis. For clean switching in noisy environments (e.g., automotive 12V/24V rails with alternator ripple), add positive feedback resistors between the output and non-inverting input. Typical values for a 10 mV hysteresis band at 5V supply are 1 MΩ feedback and 10 kΩ to ground.