Datasheet

TLV271-Q1, TLV272-Q1, TLV274-Q1
FAMILY OF 550-µA/Ch 3-MHz RAIL-TO-RAIL OUTPUT
OPERATIONAL AMPLIFIERS
SGLS275A − OCTOBER 2004 − REVISED JUNE 2008
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 23
0.00
0.05
0.10
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
0.00
0.05
0.10
INVERTING SMALL-SIGNAL RESPONSE
V
DD
= 5 V
A
V
= V
I
= −1
R
L
= 2 kΩ
C
L
= 10 pF
V
I
= 100 mV
pp
T
A
= 25°C
V
O
− Output Voltage − VV
O
V
I
− Input Voltage − VV
I
t − Time − µs
Figure 24
−140
−120
−100
−80
−60
−40
−20
0
10 100 1 k 10 k 100 k
CROSSTALK
vs
FREQUENCY
f − Frequency − Hz
V
DD
= 2.7, 5, & 15 V
V
I
= 1 V
DD
/2
A
V
= 1
R
L
= 2 kΩ
T
A
= 25°C
Crosstalk − dB
Crosstalk
APPLICATION INFORMATION
driving a capacitive load
When the amplifier is configured in this manner, capacitive loading directly on the output decreases 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 (R
NULL
) with the output of the amplifier, as shown
in Figure 25. A minimum value of 20 Ω should work well for most applications.
C
LOAD
R
F
Input
Output
R
G
R
NULL
+
−
V
DD
/2
Figure 25. Driving a Capacitive Load