AEC-Q100 quad CMOS op-amp for automotive signal chains
Each of the four amplifiers delivers a 10 MHz gain-bandwidth product and a 19 V/µs slew rate, which together support sensor amplification, active filtering, and ADC driver stages in 5 V and 12 V rail systems. The CMOS input stage keeps input bias current at 1.5 pA, preserving accuracy when interfacing with high-impedance sources like piezoelectric or thermopile sensors.
A 10 MHz gain-bandwidth product lets this part close a unity-gain loop with -3 dB bandwidth near that frequency; at a gain of 10, the closed-loop bandwidth drops to roughly 1 MHz. The 19 V/µs slew rate means a 10 V output step settles in about 0.5 µs, which keeps distortion low in the audio band and supports fast-settling multiplexed ADC front-ends. For a 5 V peak-to-peak output, the full-power bandwidth works out to around 600 kHz — above that, slew-rate limiting begins to clip the signal.
4.5 V to 16 V supply — rail compatibility
The supply span from 4.5 V to 16 V covers the common automotive battery rails (5 V regulated, 12 V nominal) and industrial 12 V supplies. At 4.5 V minimum, it still operates through cold-crank conditions on a 5 V rail. Each amplifier draws 2.1 mA typical supply current, totalling 8.4 mA for the quad package — a reasonable budget for a four-channel signal conditioning block.
The AEC-Q100 qualification adds the documentation trail that automotive and defence buyers need for PPAP submissions.
16-SOIC package — board integration
The quad-channel density packs four amplifiers into the same board area a dual op-amp would occupy in an SOIC-8, which cuts per-channel placement cost and board space in multi-stage analog front-ends. Supply decoupling with 0.1 µF ceramic per supply pin close to the package is the usual practice.