CLC412 datasheet(11/20 Pages) TI1

11 / 20 page

OBSOLETE

CLC412

www.ti.com

SNOS833D – AUGUST 2000 – REVISED APRIL 2013

Figure 34. Frequency Response vs. Rf

The plot above (Figure 34), labeled “Frequency Response vs. Rf” shows the CLC412's frequency and phase

response as Rf is varied while the gain remains constant at +2V/V (RL = 100Ω). This plot shows that one

particular value of Rf will optimize the frequency and phase response at the specified gain setting, i.e. 634Ω at a

gain of +2V/V. Current-feedback op amps, unlike voltage-feedback op amps, have a direct relationship between

their frequency and phase response to the value of the feedback resistor, Rf. For more information see

Application Note OA-13 which describes the relationship between Rf and closed-loop frequency response.

When configuring the CLC412 for other inverting or non-inverting gains, it is necessary to adjust the value of the

feedback resistor in order to optimize the device's frequency and phase response. The two plots below provide

the means of selecting the recommended feedback resistor value for both inverting and non-inverting gain

selections.

Figure 35. Rf vs. Non-Inverting Gain (AJE & AJP)

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