80 MHz GBW and 27 V/µs slew rate — what they mean for signal chain design
The 80 MHz gain-bandwidth product (cite:) sets the small-signal bandwidth: at a closed-loop gain of 10, the -3 dB point sits around 8 MHz, so the OPA211MDGKTEP handles fast sensor signals or ADC input buffers without rolling off below 1 MHz. The 27 V/µs slew rate (cite:) governs the large-signal response — a 10 V output step slews in about 370 ns, making this op-amp suitable for driving the input of a SAR ADC or for pulse amplification where settling time matters.
Supply range, output swing, and temperature grade
Operates from a single 4.5 V rail up to 36 V total (cite:,), so it works on both a 5 V logic supply and a ±15 V industrial rail without a separate regulator — one BOM line covers both scenarios. Rail-to-rail output (cite:) swings within 50 mV of each supply rail at light loads, preserving dynamic range when the supply is as low as 4.5 V — critical for single-supply data acquisition. Rated for -55°C to 125°C (cite:), this is the extended industrial / military temperature band — the part keeps its offset and bandwidth spec across the full range, not just at 25°C.
Package, supply current, and output drive
Housed in an 8-VSSOP (3.00 mm × 3.00 mm body, 0.65 mm pitch) (cite:,) — the small footprint fits dense mixed-signal boards, but the exposed pad (if present on this variant) should be soldered to a ground-plane island for thermal relief. Quiescent supply current is 3.6 mA typical (cite:) — low enough for multi-channel arrays without overheating the board, yet the output can source or sink 30 mA (cite:) to drive a 100 Ω load to within 1 V of the rails. Input bias current is 50 nA maximum (cite:) — for a 10 kΩ source impedance the voltage error from bias current is 0.5 mV, negligible in most precision circuits but worth noting for high-impedance sensors above 100 kΩ.