High-bandwidth-peak-detector

Description: The high-speed peak detector utilizes a highly accurate, fast sample-and-hold (s/h) amplifier that is controlled by a high-speed comparator. The s/h amplifier retains the peak voltage until the comparator switches the amplifier to its sample mode to capture a new, higher voltage level. This circuit accommodates all common waveform shapes and demonstrates a 5% accuracy from 50 Hz to 2 MHz. The output of the comparator decreases when the input signal exceeds the value of the currently held output. This transition activates the s/h amplifier into sample mode. Once the output matches the input value, or if the input signal drops below the output level, the comparator's output increases, returning the s/h amplifier to hold mode, thus maintaining the peak value of the input signal. The circuit can be reset by lowering the value of pin 4 of the NE522 comparator, which allows the NE5060 s/h amplifier to acquire the input. The NE522 comparator features an open-collector output.

The high-speed peak detector circuit is designed to reliably capture and hold the peak voltage of varying input signals, making it suitable for applications that require precise voltage monitoring across a wide frequency range. The core components of this circuit include the NE522 comparator and the NE5060 sample-and-hold amplifier, which work in tandem to ensure accurate peak detection.

The NE522 comparator operates at high speeds, allowing for rapid response to changes in the input signal. Its open-collector output configuration enables flexible interfacing with other circuit elements, providing versatility in system design. When the input signal exceeds the held output voltage, the comparator's output drops, triggering the sample mode of the NE5060 amplifier. This transition is crucial for capturing the peak voltage, ensuring that the circuit can respond to transient signals effectively.

Once the peak voltage is captured, the NE5060 amplifier holds this value until the input signal decreases or matches the held output. The feedback mechanism provided by the comparator ensures that the circuit remains stable and accurately reflects the peak input voltage. The circuit's reset functionality, achieved by adjusting pin 4 of the NE522, allows for quick re-acquisition of the input signal, making the system efficient in tracking rapidly changing signals.

Overall, the high-speed peak detector is an essential component in signal processing applications, offering high accuracy and responsiveness across a range of frequencies, making it ideal for use in various electronic measurement and monitoring systems.The high-speed peak detector uses a highly accurate, fast s/h amplifier controlled by a highspeed comparator. The s/h amplifier holds the peak voltage, until the comparator switches the amp to its sample mode, to capture a new, higher voltage level.

The circuit handles all common-wave shapes and exhibits 5% accuracy from 50 Hz to 2 MHz. The comparator"s output decreases when the input signal exceeds the value of the currently held output. This transition puts the s/h amplifier into sample mode. Once the output reaches the value of the input, or the input signal falls below the output"s level, the comparator"s output increases; the high output brings the s/h amplifier back to the hold mode, thereby holding the peak value of the input signal. Reset the circuit by lowering the value of pin 4 of the NE522 comparator, which in tum allows the NE5060 s/h amplifier to acquire the input.

The NE522 comparator has an open-collector output.