Military Speedplus unity gain stable, wideband voltage limiting amplifier

Product details

Architecture Voltage FB Number of channels 1 BW at Acl (MHz) 530 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1000 Vn at flatband (typ) (nV√Hz) 6.3 Rail-to-rail No Rating Military Operating temperature range (°C) -55 to 125 Input bias current (max) (pA) 12000 Iout (typ) (mA) 100
Architecture Voltage FB Number of channels 1 BW at Acl (MHz) 530 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1000 Vn at flatband (typ) (nV√Hz) 6.3 Rail-to-rail No Rating Military Operating temperature range (°C) -55 to 125 Input bias current (max) (pA) 12000 Iout (typ) (mA) 100
B0QFN (JD) 8 75.8373 mm² 10.29 x 7.37
  • High Linearity Near Limiting
  • Fast Recovery from Overdrive: 2.4 ns
  • Limiting Voltage Accuracy: ±15 mV
  • –3dB Bandwidth (G = +1): 450 MHz
  • Slew Rate: 1000 V/µs
  • ±5-V and 5-V Supply Operation
  • Unity Gain Version of the OPA689
  • applications
    • Fast Limiting ADC Input Buffers
    • CCD Pixel Clock Stripping
    • Video Sync Stripping
    • HF Mixers
    • IF Limiting Amplifiers
    • AM Signal Generation
    • Non-Linear Analog Signal Processing
    • High Speed Comparators

  • High Linearity Near Limiting
  • Fast Recovery from Overdrive: 2.4 ns
  • Limiting Voltage Accuracy: ±15 mV
  • –3dB Bandwidth (G = +1): 450 MHz
  • Slew Rate: 1000 V/µs
  • ±5-V and 5-V Supply Operation
  • Unity Gain Version of the OPA689
  • applications
    • Fast Limiting ADC Input Buffers
    • CCD Pixel Clock Stripping
    • Video Sync Stripping
    • HF Mixers
    • IF Limiting Amplifiers
    • AM Signal Generation
    • Non-Linear Analog Signal Processing
    • High Speed Comparators

The OPA688 is a wideband, unity gain stable voltage-feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when it attempts to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±15 mV. The op amp operates linearly to within 30 mV of the output limit voltages.

The combination of narrow nonlinear range and low limiting offset allows the limiting voltages to be set within 100 mV of the desired linear output range. A fast 2.4-ns recovery from limiting ensures that overdrive signals will be transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA688 to be used in all standard op amp applications.

Non-linear analog signal processing will benefit from the OPA688s sharp transition from linear operation to output limiting. The quick recovery time supports high-speed applications.

The OPA688M is available in an industry standard pinout CDIP-8 package. For higher gain, or transimpedance applications requiring output limiting with fast recovery, consider the OPA689M.

The OPA688 is a wideband, unity gain stable voltage-feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when it attempts to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±15 mV. The op amp operates linearly to within 30 mV of the output limit voltages.

The combination of narrow nonlinear range and low limiting offset allows the limiting voltages to be set within 100 mV of the desired linear output range. A fast 2.4-ns recovery from limiting ensures that overdrive signals will be transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA688 to be used in all standard op amp applications.

Non-linear analog signal processing will benefit from the OPA688s sharp transition from linear operation to output limiting. The quick recovery time supports high-speed applications.

The OPA688M is available in an industry standard pinout CDIP-8 package. For higher gain, or transimpedance applications requiring output limiting with fast recovery, consider the OPA689M.

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* Data sheet OPA688MUnity Gain Stable, Wideband Voltage Limiting Amplifier datasheet (Rev. B) 15 Nov 2006

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