AEC-Q100 grade and what it means for your BOM
The LM94022QBIMGX/NOPB carries the Automotive, AEC-Q100 qualification — this is the pass-fail gate for any production intent in an automotive ECU. The operating temperature range of -50°C to 150°C covers underhood and engine-bay ambient, so the die and package are rated for the thermal profile. Accuracy is ±1.5°C (highest) and ±2.7°C (lowest), tested at 20°C to 40°C and 0°C to 150°C respectively. The ±1.5°C band is the figure you size the system thermal budget against at the nominal operating point; the wider ±2.7°C tolerance at the extremes accounts for the sensor's drift over temperature.
Supply voltage and output type for signal chain integration
The analog voltage output is ratiometric to the supply; the resolution is programmable from 5.5 mV/°C to 13.6 mV/°C, which lets the designer trade off temperature resolution against ADC input range and noise immunity. The output is a local analog voltage — there is no digital bus, no I²C address to configure. The ADC input pin reads the voltage directly; the conversion formula is Vout = (gain × T) + offset, where gain is set by the resolution configuration. The programmable resolution feature is controlled via a logic pin, not a serial interface.
SC-70-5 package and board-level integration
Housed in the 5-lead SC-70-5 package (also known as SOT-353), the LM94022QBIMGX/NOPB occupies a 2.0 mm × 2.1 mm footprint. The supplier device package is SC-70-5 — the pad layout follows the standard JEDEC MO-203 variation. The small package makes it suitable for space-constrained modules like a battery management system (BMS) sensing board or a sealed ECU where board real estate is at a premium. Mounting is surface mount, and the part is available in Tape & Reel (TR) or Cut Tape (CT) for pick-and-place assembly. The -50°C to 150°C operating range means the package must handle the thermal expansion mismatch with the PCB over the full temperature swing — the SC-70-5 is a standard plastic package with a typical coefficient of thermal expansion matched to standard FR-4.