SNOS760D May   1999  – February 2024 LM7171

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Pin Configuration and Functions
  6. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics: ±15V
    6. 5.6 Electrical Characteristics: ±5V
    7. 5.7 Typical Characteristics: LM7171A
    8. 5.8 Typical Characteristics: LM7171B
  7. 6Application and Implementation
    1. 6.1 Application Information
      1. 6.1.1 Circuit Operation
      2. 6.1.2 Slew Rate Characteristic
        1. 6.1.2.1 Slew-Rate Limitation
      3. 6.1.3 Compensation for Input Capacitance
    2. 6.2 Typical Applications
    3. 6.3 Power Supply Recommendations
      1. 6.3.1 Power-Supply Bypassing
      2. 6.3.2 Termination
      3. 6.3.3 Driving Capacitive Loads
      4. 6.3.4 Power Dissipation
    4. 6.4 Layout
      1. 6.4.1 Layout Guidelines
        1. 6.4.1.1 Printed Circuit Board and High-Speed Op Amps
        2. 6.4.1.2 Using Probes
        3. 6.4.1.3 Component Selection and Feedback Resistor
  8. 7Device and Documentation Support
    1. 7.1 Receiving Notification of Documentation Updates
    2. 7.2 Support Resources
    3. 7.3 Trademarks
    4. 7.4 Electrostatic Discharge Caution
    5. 7.5 Glossary
  9. 8Revision History
  10. 9Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|8
  • P|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.1 Application Information

The LM7171 is a very high-speed, voltage-feedback amplifier (VFA). This device consumes only 6.5mA of supply current while providing a unity-gain bandwidth of 200MHz and a slew rate of 4100V/μs. The LM7171 also has other great features such as low differential gain and phase and high output current.

The LM7171 is a true VFA. Unlike a current-feedback amplifier (CFA) with a low inverting input impedance and a high noninverting input impedance, both inputs of a VFA have high-impedance nodes. The low-impedance inverting input of a CFA and a feedback capacitor create an additional pole that leads to instability. As a result, CFAs cannot be used in traditional op-amp circuits such as photodiode amplifiers, I-to-V converters, and integrators, where a feedback capacitor is required.