TLV2460AEP TLV2461AEP TLV2462AEP TLV2463AEP TLV2464AEP

FAMILY OF LOW POWER RAILTORAIL INPUT/OUTPUT

OPERATIONAL AMPLIFIERS WITH SHUTDOWN

SGLS132C − AUGUST 2002 − REVISED OCTOBER 2005

23

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

PARAMETER MEASUREMENT INFORMATION

_

+

Rnull

RL

CL

Figure 49

APPLICATION INFORMATION

driving a capacitive load

When the amplifier is configured in this manner, capacitive loading directly on the output will decrease the

device’s phase margin leading to high frequency ringing or oscillations. Therefore, for capacitive loads of greater

than 10 pF, it is recommended that a resistor be placed in series (RNULL) with the output of the amplifier, as

shown in Figure 49. A minimum value of 20

Ω should work well for most applications.

CLOAD

RF

Input

Output

RG

RNULL

_

+

Figure 50. Driving a Capacitive Load

offset voltage

The output offset voltage, (VOO) is the sum of the input offset voltage (VIO) and both input bias currents (IIB) times

the corresponding gains. The following schematic and formula can be used to calculate the output offset

voltage:

V

OO +

V

IO

1

)

R

F

R

G

" I

IB

)

R

S

1

)

R

F

R

G

" I

IB–

R

F

+

−

VI

+

RG

RS

RF

IIB−

VO

IIB+

Figure 51. Output Offset Voltage Model