TLV2760, TLV2761, TLV2762, TLV2763, TLV2764, TLV2765

FAMILY OF 1.8 V MICROPOWER RAIL-TO-RAIL INPUT/OUTPUT

OPERATIONAL AMPLIFIERS WITH SHUT DOWN

SLOS326D – JUNE 2000 – REVISED FEBRUARY 2001

14

POST OFFICE BOX 655303

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

shown in Figure 31. A minimum value of 20

Ω should work well for most applications.

CLOAD

RF

Input

Output

RG

RNULL

+

–

VDD/2

Figure 31. Driving a Capacitive Load

offset voltage

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 32. Output Offset Voltage Model

general configurations

When receiving low-level signals, limiting the bandwidth of the incoming signals into the system is often

required. The simplest way to accomplish this is to place an RC filter at the noninverting terminal of the amplifier

(see Figure 33).