LMC6464AMWG-QML NSC [National Semiconductor], LMC6464AMWG-QML Datasheet - Page 15

• Manufacturer Part Number: LMC6464AMWG-QML
• Description: Micropower, Rail-to-Rail Input and Output CMOS Operational Amplifier
• Manufacturer: NSC [National Semiconductor]

Typical Single-Supply Applications
where t is the time the amplifier input takes to move from
1.67V to 3.33V. The calculations are shown below.
where
and
Then,
= 1 Hz
(Continued)
t
t
1
2
= 0.27 seconds.
= 0.75 seconds
= RC = 0.68 seconds
15
LOW FREQUENCY NULL
Output offset voltage is the error introduced in the output
voltage due to the inherent input offset voltage V
amplifier.
Output Offset Voltage = (Input Offset Voltage) (Gain)
In the above configuration, the resistors R
mine the nominal voltage around which the input signal, V
should be symmetrical. The high frequency component of
the input signal V
quency component will be nulled since the DC level of the
output will be the input offset voltage of the LMC6462 plus
the bias voltage. This implies that the output offset voltage
due to the top amplifier will be eliminated.
FIGURE 22. High Gain Amplifier
with Low Frequency Null
IN
will be unaffected while the low fre-
5
and R
www.national.com
DS012051-28
OS
6
, of an
deter-
IN