Features and Benefits

  • Gain-Bandwidth: 150MHz
  • Gain of 4 Stable
  • Slew Rate: 250V/µs
  • Input Noise Voltage: 6nV/√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 500Ω: ±12V
  • Minimum DC Gain: 50V/mV, RL = 500Ω
  • Settling Time to 0.1%: 65ns, 10V Step
  • Settling Time to 0.01%: 85ns, 10V Step
  • Differential Gain: 0.08%, AV = 4, RL = 150Ω
  • Differential Phase: 0.2°, AV = 4, RL = 150Ω

Product Details

The LT1221 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 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.


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

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.