Signal Conditioning Operational Amplifiers (Op Amps) High Speed Amplifiers (GBW > 50MHz)

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

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

LT1221 Typical Application
LT1221 Typical Application

Description

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.

 

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing		 RoHS
LT1221CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1221CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1221CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes


LT1221 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LT1221CN8#PBF N-8 C $4.17 $3.30 Yes
LT1221CS8#PBF SO-8 C $4.50 $3.40 Yes
LT1221CS8#TRPBF SO-8 C $3.46 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC417B DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp $25.00
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Click here to view our complete list of demo boards

Applications

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

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Design Tools

LTspice

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Models for the following parts are available in LTspice:
LT1221

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