LM7131BCM5X National Semiconductor, LM7131BCM5X Datasheet - Page 20

• Manufacturer Part Number: LM7131BCM5X
• Description: Tiny High Speed Single Supply Operational Amplifier
• Manufacturer: National Semiconductor

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Using the LM7131
D/A Output Amplifier
The LM7131 can be used as an output amplifier for fast
digital-to-analog converters. When using the LM7131 with
converters with an output voltage range which may exceed
the differential input voltage limit of
to add protection diodes to the inputs. See Figure 15 . For
high speed applications, it may be useful to consider low ca-
pacitance schottky diodes. Additional feedback capacitance
(Continued)
±
2V, it may be necessary
FIGURE 15. D/A Ouput Amplifier
20
may be needed to control ringing due to the additional input
capacitance from the D/A and protection diodes. When used
with current output D/As, the input bias currents may pro-
duce a DC offset in the output. This offset may be canceled
by a resistor between the positive input and ground.
Spice Macromodel
A SPICE macromodel of the LM7131 and many other Na-
tional Semiconductor op amps is available at no charge from
your National Semiconductor representative.
DS012313-24