Fast op. amp. [Renesas EL5104, Analog Devices AD9631-2] Fast opamp - - PowerPoint PPT Presentation

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Jan 06, 2024 234 likes •296 views

Fast op. amp. [Renesas EL5104, Analog Devices AD9631-2] Fast opamp The EL5104, EL5105, EL5204, EL5205, and EL5304 are high-speed voltage feedback amplifiers based on the current feedback amplifier architecture. This gives the typical

SLIDE 1

Fast op. amp.

[Renesas EL5104, Analog Devices AD9631-2]

SLIDE 2

Fast opamp

 The EL5104, EL5105, EL5204, EL5205, and EL5304 are

high-speed voltage feedback amplifiers based on the current feedback amplifier architecture.

 This gives the typical high slew rate benefits of a CFA

family along with the stability and ease of use associated with the VFA type architecture.

SLIDE 3

EL5104

Specified for 5 V or ±5 V applications
-3dB bandwidth = 700 MHz
±0.1dB bandwidth = 45 MHz
low supply current = 9.5 mA
slew rate = 7000 V/µs

SLIDE 4

AD9631 and AD9632

 The AD9631 and AD9632 are very high speed and wide

bandwidth amplifiers.

 settling 16 ns to 0.01%, 2 V step  unlike a traditional voltage feedback amplifier, where the

slew speed is dictated by its front end dc quiescent current and gain bandwidth product, they provide “on- demand” current that increases proportionally to the input “step” signal amplitude ->

 slew rates (1300 V/us) comparable to wideband current

feedback designs.

 AD9631: G = +1, AD9632: G = +2  “The value of the feedback resistor is critical for optimum

performance on the AD9631 (gain of +1) and less critical as the gain increases”

SLIDE 5

 “The AD9631 and AD9632 have been designed to offer

utstanding performance as video line drivers”

Note the bypass capacitors on the power supply!