DocID024568 Rev 4

21/31

TSX9291, TSX9292

Application information

31

Equation 5

as a function of the maximum operating voltage and the absolute maximum rating (as

recommended by JEDEC rules).

different measurement conditions (see Equation 6).

Equation 6

calculated number of months (Equation 7).

Equation 7

duration.

4.7

Capacitive load

Driving a large capacitive load can cause stability issues. Increasing the load capacitance

produces gain peaking in the frequency response, with overshooting and ringing in the step

response. It is usually considered that with a gain peaking higher than 2.3 dB the op-amp

might become unstable. Generally, the unity gain configuration is the worst configuration for

stability and the ability to drive large capacitive loads. Figure 39 shows the serial resistor

(Riso) that must be added to the output, to make the system stable. Figure 40 shows the

test configuration for Riso.

Months

×

12 months

24 h

365.25 days

×

()

⁄

×

=

⁄

==

months

()

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=