12 MHz GBW, 5V/µs — signal bandwidth for sensor conditioning
The TL972QDRQ1 is a dual general-purpose operational amplifier from Texas Instruments, part of the Automotive, AEC-Q100 series. It delivers a 12 MHz gain bandwidth product and a 5V/µs slew rate, making it suitable for conditioning sensor signals in automotive control modules where the signal frequency stays below a few hundred kilohertz. Rail-to-rail output swing lets the amplifier drive the full ADC input range without losing headroom on a 5V or 3.3V rail — useful when the downstream converter uses the supply as its reference.
AEC-Q100 Grade 1: -40°C to 125°C ambient
Qualified to AEC-Q100, the TL972QDRQ1 operates across -40°C to 125°C. This covers the under-hood temperature band for engine bay ECUs and transmission controllers, where the ambient inside the sealed enclosure can reach 105°C on a hot day and still leave margin. The 2.7 V to 12 V supply span means it runs from a regulated 5V rail or directly off a 12V battery line with a pre-regulator — no need for a separate low-voltage supply just for the signal chain.
80 mA output drive per channel
Each of the two channels can source or sink 80 mA. That is enough to drive a small relay coil, an LED indicator, or the input of a downstream comparator without a separate buffer stage — saves one component per channel on the BOM. Input bias current is 200 nA typical, and input offset voltage is 1 mV typical. For a sensor with a 10 kΩ source impedance, the bias current contributes 2 mV of offset error — acceptable for many automotive threshold-detection circuits but worth budgeting in a precision application.