Datasheet

LM8261
www.ti.com SNOS469I –APRIL 2000–REVISED MARCH 2013
2.7V ELECTRICAL CHARACTERISTICS
Unless otherwise specified, all limits guaranteed for T
A
= 25°C, V
+
= 2.7V, V
−
= 0V, V
CM
= 0.5V, V
O
= V
+
/2, and R
L
> 1MΩ to
V
−
. Boldface limits apply at the temperature extremes.
(1)
Symbol Parameter Condition Typ
(2)
Limit
(3)
Units
V
OS
Input Offset Voltage V
CM
= 0.5V & V
CM
= 2.2V +/−0.7 +/−5 mV
+/−7 max
TC V
OS
Input Offset Average Drift V
CM
= 0.5V & V
CM
= 2.2V
(4)
+/−2 – µV/C
I
B
Input Bias Current V
CM
= 0.5V
(5)
−1.20 −2.00
−2.70
µA
max
V
CM
= 2.2V
(5)
+0.49 +1.00
+1.60
I
OS
Input Offset Current V
CM
= 0.5V & V
CM
= 2.2V 20 250 nA
400 max
CMRR Common Mode Rejection Ratio V
CM
stepped from 0V to 1.0V 100 76
60
dB
V
CM
stepped from 1.7V to 2.7V 100
min
V
CM
stepped from 0V to 2.7V 70 58
50
+PSRR Positive Power Supply Rejection V
+
= 2.7V to 5V 104 78 dB
Ratio 74 min
CMVR Input Common-Mode Voltage CMRR > 50dB −0.3 −0.1 V
Range 0.0 max
3.0 2.8 V
2.7 min
A
VOL
Large Signal Voltage Gain V
O
= 0.5 to 2.2V, 78 70 dB
R
L
= 10K to V
−
67 min
V
O
= 0.5 to 2.2V, 73 67 dB
R
L
= 2K to V
−
63 min
V
O
Output Swing R
L
= 10K to V
−
2.59 2.49
High 2.46
V
min
R
L
= 2K to V
−
2.53 2.45
2.41
Output Swing R
L
= 10K to V
−
90 100 mV
Low 120 max
I
SC
Output Short Circuit Current Sourcing to V
−
48 30 mA
V
ID
= 200mV
(6)(7)
20 min
Sinking to V
+
65 50 mA
V
ID
= −200mV
(6)(7)
30 min
I
S
Supply Current No load, V
CM
= 0.5V 0.95 1.20 mA
1.50 max
SR Slew Rate
(8)
A
V
= +1,V
I
= 2V
PP
9 – V/µs
f
u
Unity Gain-Frequency V
I
= 10mV, R
L
= 2KΩ to V
+
/2 10 – MHz
GBWP Gain Bandwidth Product f = 50KHz 21 15.5 MHz
14 min
Phi
m
Phase Margin V
I
= 10mV 50 – Deg
e
n
Input-Referred Voltage Noise f = 2KHz, R
S
= 50Ω 15 – nV/ √Hz
i
n
Input-Referred Current Noise f = 2KHz 1 pA/ √Hz
(1) Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under
conditions of internal self heating where TJ > TA.
(2) Typical Values represent the most likely parametric norm.
(3) All limits are guaranteed by testing or statistical analysis.
(4) Offset voltage average drift determined by dividing the change in VOS at temperature extremes into the total temperature change.
(5) Positive current corresponds to current flowing into the device.
(6) Production Short Circuit test is a momentary test. See Note 7.
(7) Allowable Output Short Circuit duration is infinite for VS ≤ 6V at room temperature and below. For VS > 6V, allowable short circuit
duration is 1.5ms.
(8) Slew rate is the slower of the rising and falling slew rates. Connected as a Voltage Follower.
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