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Results on Analog.com

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  • Resource_types.lvl0:Application Note
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    1. OPAMP Output oscillating when driving ADC Input, ADA4807-1, AD9236

      Forum Thread
      Answered
      Operational Amplifiers
      24 September, 2024
      Image is showing an AD4807-1 based driver for ADC input.ADC is AD9236BCPZ-80 running at 12 MHz.At output of OPAMP I'm measuring approx. 200 mVp-p AC ripple looking somewhat as AM-modulated signal.At Pin 4 of OPAMP I'm measuring steady sinewave 1.2Vp …
      Operational Amplifiers (Op Amps)ADA4807-1hardwareada4807adc inputHigh Speed Op Amps (Bandwidth = 50MHz)AD9236BCPZ-80High Speed A/D Converters >10 MSPSStandard High Speed A/D Converters

    2. ADA4807 max input current

      Forum Thread
      Answered
      Other Products (EN)
      26 January, 2024
      I cannot find where the Max input current is specified in the datasheet. If the input voltage may exceed the supply voltage for short periods what source resistance will I need to use to protect the device ? Many thanks, Ian
      Datasheet/Specsada4807

    3. ADA4807-4 Spice Model

      Forum Thread
      Answered
      Operational Amplifiers
      04 November, 2022
      Hi I did a simulation in LTSpice using the ADA4807-4 OpAmp. I want to use it to generate a triangular waveform. But my calculations do not match the simulation. I changed the OpAmp. And it works with all other OpAmps I tried with similar specifications. Is the spice model …
      Operational Amplifiers (Op Amps)Datasheet/Specsamplifiersada4807triangularLTspiceHigh Speed Op Amps (Bandwidth = 50MHz)ada4807-4

    4. ADA4807 Disable Thresholds

      Forum Thread
      Answered
      Operational Amplifiers
      22 July, 2022
      Table 10 of the datasheet for this part specifies the disable thresholds for +/-5V operation as: Enabled when > 1.6V Disabled when < 1.3V It also provides a graph (Figure 64) for determining the thresholds for any operating voltage. The thresholds provided by this graph are graph are higher (3 …
      Datasheet/Specsada4807

    5. ADA4807-1 had output oscillation on Non-inverting Topology

      Forum Thread
      Answered
      Operational Amplifiers
      15 January, 2021
      … of ADA4807-1 is 13.26MHz Oscillation waveform. My schematic of PCB is the same as LTspice. I use 100nF X7R & 6.8uF X5R on ADA4807-1 bypass capacitor. Following is the Oscilloscope waveform. CH1 is ADA4807-1 output, CH2 is ADA4807-1 input. Why dose the ADA4807-1 oscillation …
      Operational Amplifiers (Op Amps)ADA4807-1non_inverting_amplifieramplifiersada4807opampamplifierHigh Speed Op Amps (Bandwidth = 50MHz)

    6. Not able to understand ADA4807-2ACP's behavior

      Forum Thread
      Answered
      Differential Amplifiers and ADC Drivers
      19 December, 2020
      Hi I have set up the ADA4807 in simulation as shown in the picture below and I do not seem to get the gain unlike mentioned in the article A Low Power, Low Cost, Differential Input to a Single-Ended Output Amplifier | Analog Devices What am I doing wrong here …
      ada4807LTspice

    7. ADA4807 Spice Model Slew Rate Modeled Correctly?

      Forum Thread
      Answered
      Operational Amplifiers
      19 December, 2018
      Hello, I am using the ADA4807 model to model the ADA4807-2 in an active filter application where the output is a 10 MHz sinewave. The output has a peak voltage of 1.79 V. Theoretical calculation shows: Min Req Slew Rate = 2 * pi * 10 * f * Vpeak/(10^6) V …
      Operational Amplifiers (Op Amps)amplifiersspice modelspiceada4807slew rateopampHigh Speed Op Amps (Bandwidth = 50MHz)ada4807-2

    8. ADA4807

      Forum Thread
      Answered
      Other Products (EN)
      01 December, 2015
      Dear Analog Devices I am having challenge in understanding the datasheet on the ADA4807 (alternative AD8027), in respect of the output swing. My challenge is that I have an input from a potmeter, providing a voltage input to a “buffer”, using an opamp (ADA4841-1YRJZ) with gain +1. The …
      ada4807ada8027ada4841

    9. ADA4807: FAQ

      Docs & FAQs
      Amplifiers
      FAQ
      ada4807

    10. The spec table states the capacitive load drive of the ADA4807-2 is 15pF. Can the ADA4807-2 drive larger capacitor loads? Will this heavy capacitive load make the amplifier unstable?

      Docs & FAQs
      Amplifiers
      Q The spec table states the capacitive load drive of the ADA4807-2 is 15pF. Can the ADA4807-2 drive larger capacitor loads? Will this heavy capacitive load make the amplifier unstable? A Yes, the ADA4807-2 can drive larger capacitor loads. A capacitive load adds an extra pole to …
      ada4807