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LT1818 - 400MHz, 2500V/μs, 9mA Single Operational Amplifiers

The LT1818/LT1819 are single/dual wide bandwidth, high slew rate, low noise and distortion operational amplifiers with excellent DC performance. The LT1818/LT1819 have been designed for wider bandwidth and slew rate, much lower input offset voltage and lower noise and distortion than devices with comparable supply current. The circuit topology is a voltage feedback amplifier with the excellent slewing characteristics of a current feedback amplifier.

The output drives a 100Ω load to ±3.8V with ±5V supplies. On a single 5V supply, the output swings from 1V to 4V with a 100Ω load connected to 2.5V. The amplifier is unity-gain stable with a 20pF capacitive load without the need for a series resistor. Harmonic distortion is –85dBc up to 5MHz for a 2VP-P output at a gain of 2.

The LT1818/LT1819 are manufactured on Linear Technology’s advanced low voltage complementary bipolar process. The LT1818 (single op amp) is available in TSOT-23 and SO-8 packages; the LT1819 (dual op amp) is available in MSOP-8 and SO-8 packages.

Features 400MHz Gain Bandwidth Product 2500V/μs Slew Rate –85dBc Distortion at 5MHz 9mA Supply Current Per Amplifier 6nV/√Hz Input Noise Voltage Unity-Gain Stable 1.5mV Maximum Input Offset Voltage 8μA Maximum Input Bias Current 800nA Maximum Input Offset Current 40mA Minimum Output Current, VOUT = ±3V ±3.5V Minimum Input CMR, VS = ±5V Specified at ±5V, Single 5V Supplies Operating Temperature Range: –40°C to 85°C Low Profile (1mm) TSOT-23 (ThinSOT™) Package Typical Application

Applications Wideband Amplifiers Buffers Active Filters Video and RF Amplification Communication Receivers Cable Drivers Data Acquisition Systems Packaging

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