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LT1221 - 150MHz, 250V/µs, AV >/=4 Operational Amplifier

The LT®1221 is a very high speed operational amplifier with superior DC performance. The LT1221 is stable in a noise gain of 4 or greater. It features reduced input offset voltage, lower input bias currents and higher DC gain than devices with comparable bandwidth and slew rate. The circuit is a single gain stage that includes proprietary DC gain enhancement circuitry to obtain precision with high speed. The high gain and fast settling time make the circuit an ideal choice for data acquisition systems. The circuit is also capable of driving capacitive loads which makes it useful in buffer or cable driver applications.

The LT1221 is a member of a family of fast, high performance amplifiers that employ Linear Technology Corporation’s advanced complementary bipolar processing. For unity-gain stable applications the LT1220 can be used, and for gains of 10 or greater the LT1222 can be used.

Features Gain-Bandwidth: 150MHz Gain of 4 Stable Slew Rate: 250V/µs Input Noise Voltage: 6nV/ rt Hz C-Load™ Op Amp Drives Capacitive Loads Maximum Input Offset Voltage: 600µV Maximum Input Bias Current: 300nA Maximum Input Offset Current: 300nA Minimum Output Swing Into 500 ohms: ±12V Minimum DC Gain: 50V/mV, RL = 500 ohms Settling Time to 0.1%: 65ns, 10V Step Settling Time to 0.01%: 85ns, 10V Step Differential Gain: 0.08%, AV = 4, RL = 150 ohms Differential Phase: 0.2°, AV = 4, RL = 150 ohms Typical Application

Applications Wideband Amplifiers Buffers Active Filters Video and RF Amplification Cable Drivers 8-, 10-, 12-Bit Data Acquisition Systems Packaging

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