What this dual op-amp delivers for high-speed signal chains
The LT6231IDD#PBF is a dual-channel general-purpose op-amp from the LT® series, offering a 215 MHz gain-bandwidth product and 70 V/µs slew rate. That combination means it can handle fast pulse edges and wideband analog signals without slew-induced distortion — a common pain point in ADC driver stages or video buffers where a slower part would round off the waveform. Each channel delivers rail-to-rail output swing, which maximizes dynamic range when running from a single 3 V to 12.6 V supply. The 3.3 mA per-channel supply current keeps the thermal budget manageable in a dual-channel layout.
At 215 MHz GBW, the LT6231IDD#PBF sits above general-purpose op-amps like the AD8646 (24 MHz, 11 V/µs), but below the AD8028 (190 MHz, 100 V/µs). The 70 V/µs slew rate is enough to reproduce a 10 MHz, 2 Vpp sine wave with less than 1% distortion — a practical benchmark for signal-chain design. Output current is rated at 30 mA per channel, which can drive a 50-ohm load to about 1.5 Vpp — useful for RF or video line driving where a dedicated buffer might otherwise be needed.
Package and thermal considerations for the 8-DFN footprint
Without that, the junction temperature rise at 30 mA output on both channels will exceed the datasheet's derating curve.
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