3mA, 100MHz, 750V/µs Operational Amplifier with Shutdown

The LT1812 is a low power, high speed, very high slew rate operational amplifier with excellent DC performance. The LT1812 features reduced supply current, lower input offset voltage, lower input bias current and higher DC gain than other devices with comparable bandwidth. A power saving shutdown feature reduces supply current to 50μA. The circuit topology is a voltage feedback amplifier with the slewing characteristics of a current feedback amplifier.

The output drives a 100Ω load to ±3.5V with ±5V supplies. On a single 5V supply, the output swings from 1.1V to 3.9V with a 100Ω load connected to 2.5V. The amplifier is stable with a 1000pF capacitive load which makes it useful in buffer and cable driver applications.

The LT1812 is manufactured on our advanced low voltage complementary bipolar process. The dual version is the LT1813. For higher supply voltage single, dual and quad operational amplifiers with up to 70MHz gain bandwidth, see the LT1351 through LT1365 data sheets.

Applications

* Wideband Amplifiers

* Buffers

* Active Filters

* Video and RF Amplification

* Cable Drivers

* Data Acquisition Systems

* 100MHz Gain Bandwidth

* 750V/μs Slew Rate

* 3.6mA Maximum Supply Current

* 50μA Supply Current in Shutdown

* 8nV/√Hz Input Noise Voltage

* Unity-Gain Stable

* 1.5mV Maximum Input Offset Voltage

* 4μA Maximum Input Bias Current

* 400nA Maximum Input Offset Current

* 40mA Minimum Output Current, VOUT = ±3V

* ±3.5V Minimum Input CMR, VS = ±5V

* 30ns Settling Time to 0.1%, 5V Step

* Specified at ±5V, Single 5V Supplies

* Operating Temperature Range: –40°C to 85°C

* Low Profile (1mm) SOT-23 (ThinSOT™) and S8 Packages