LM7131ACMX datasheet(15/23 Pages) NSC

15 / 23 page

Notes on Performance Curves and Datasheet Limits (Continued)

Using the LM7131

LIMITS AND PRECAUTIONS

Supply Voltage

The absolute maximum supply voltage which may be ap-

plied to the LM7131 is 12V. Designers should not design for

more than 10V nominal, and carefully check supply toler-

ances under all conditions so that the voltages do not ex-

ceed the maximum.

Differential Input Voltage

Differential input voltage is the difference in voltage between

the non-inverting (+) input and the inverting input (−) of the

op amp. The absolute maximum differential input voltage is

±2V across the inputs. This limit also applies when there is

no power supplied to the op amp. This may not be a problem

in most conventional op amp designs, however, designers

should avoid using the LM7131 as comparator or forcing the

inputs to different voltages. In some designs, diode protec-

tion may be needed between the inputs. See

Figure 12.

DS012313-18

Numbers in parentheses are measured

fixture capacitances w/o DUT and load.

FIGURE 10. Flash A/D A

V = +5 with Feedback Capacitor

DS012313-19

Numbers in parentheses are measured

fixture capacitances w/o DUT and load.

FIGURE 11. Flash A/D A

V = +10

LM7131ACMX Datasheet(PDF) 15 Page - National Semiconductor (TI)