TLV2464CPWRG4 datasheet(25/54 Pages) TI

25 / 54 page

TLV2460, TLV2461, TLV2462, TLV2463, TLV2464, TLV2465, TLV246xA

FAMILY OF LOW POWER RAILTORAIL INPUT/OUTPUT

OPERATIONAL AMPLIFIERS WITH SHUTDOWN

SLOS220J − JULY 1998 − REVISED FEBRUARY 2004

WWW.TI.COM

PARAMETER MEASUREMENT INFORMATION

Rnull

Figure 48

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

Input

Output

RNULL

Figure 49. 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:

OO +

)

" I

)

" I

IB–

−

IIB−

IIB+

Figure 50. Output Offset Voltage Model

TLV2464CPWRG4 数据表(PDF) 25 Page - Texas Instruments