Dual CMOS op amp with 5.1 MHz GBW and rail-to-rail output
The output swings rail-to-rail, but the input common-mode range does not — it stops about 1.1 V below the positive rail, so high-side sensing at 3.3 V single supply needs a different topology.
Supply voltage limits and rail-to-rail clarification
The supply voltage span is 2.5 V minimum to 5.5 V maximum — a clean 2.7 V to 5 V practical window for most designs. This is not a rail-to-rail input part. The output is rail-to-rail, which helps dynamic range in low-voltage single-supply chains, but the input common-mode range excludes the top 1.1 V of the supply. For a 3.3 V rail, the input can only go to about 2.2 V, so a non-inverting configuration with a 2.5 V reference would clip. The 500 µV input offset voltage is typical for a CMOS stage at this speed.
