175 MHz bandwidth, 220 V/µs slew rate — high-speed signal chain fit
The Analog Devices ADA4850-1YCPZ-RL7 is a single voltage-feedback op-amp with a -3 dB bandwidth of 175 MHz and a slew rate of 220 V/µs. It delivers a rail-to-rail output and operates from a supply span of 2.7 V to 6 V, drawing only 2.5 mA of supply current. Housed in an 8-LFCSP (3x3) package, this part is suited for high-speed signal conditioning in industrial and automotive environments, with an operating temperature range of -40°C to 125°C.
Slew rate and bandwidth — what they mean for the design
The 220 V/µs slew rate handles large-signal swings at high frequencies without slew-induced distortion, making this op-amp a candidate for video line drivers, ADC front-ends, and pulse amplifiers. The 175 MHz -3 dB bandwidth supports small-signal gain up to tens of MHz, but the full-power bandwidth is limited by the slew rate — for a 2 V p-p output, the large-signal bandwidth is roughly 220 V/µs / (π × 2 V) ≈ 35 MHz. The 2.5 mA supply current is low for this speed class, so the part fits power-constrained multi-channel boards where every milliamp counts.
Supply range and output swing
The supply span from 2.7 V to 6 V allows the same BOM entry to serve both 3.3 V and 5 V rails. The rail-to-rail output stage maximizes dynamic range in single-supply designs — critical when the ADC reference is the same rail. Input offset is 600 µV max, and input bias current is 2.3 µA, typical for a bipolar-input high-speed amplifier. The output can source or sink 118 mA per channel, which is enough to drive a 50 Ω line or a moderate capacitive load.
Package and footprint
The 8-LFCSP (3x3) package is a 3 mm × 3 mm leadframe chip-scale package with an exposed pad. The exposed pad must be soldered to a thermal land on the PCB — the datasheet's recommended footprint includes a center pad via to the ground plane for heat sinking.