Datasheet

±
5V DC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for T
J
=
25˚C, V
+
=
5V, V
−
=
−5V, V
CM
=
V
O
=
0V and R
L
>
1MΩ.Bold-
face limits apply at the temperature extremes.
Symbol Parameter Conditions Typ
(Note 5)
LM7121I Units
Limit
(Note 6)
C
IN
Input Capacitance Common Mode 2.3 pF
CMRR Common Mode −2V ≤ V
CM
≤ 2V 75 65 dB
Rejection Ratio 60 min
+PSRR Positive Power Supply 3V ≤ V
+
≤ 5V 89 65 dB
Rejection Ratio 60 min
−PSRR Negative Power Supply −5V ≤ V
−
≤ −3V 78 65 dB
Rejection Ratio 60 min
V
CM
Input Common Mode CMRR ≥ 60 dB 3 2.5 V
Voltage Range min
−3 −2.5 V
max
A
V
Large Signal R
L
=
2kΩ,V
O
=
3V
PP
66 60 dB
Voltage Gain 58 min
V
O
Output Swing R
L
=
2kΩ 3.62 3.0 V
2.75 min
−3.62 −3.0 V
−2.70 max
R
L
=
150Ω 3.1 2.5 V
2.3 min
−2.8 −2.15 V
−2.00 max
I
SC
Output Short Circuit Sourcing 53 38 mA
Current 33 min
Sinking 29 21 mA
19 min
I
S
Supply Current 5.1 6.4 mA
7.2 max
±
5V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
=
25˚C, V
+
=
5V, V
−
=
−5V, V
CM
=
V
O
=
0V and R
L
>
1MΩ.Bold-
face limits apply at the temperature extremes.
Symbol Parameter Conditions Typ
(Note 5)
LM7121I Units
Limit
(Note 6)
SR Slew Rate A
V
=
+2, R
L
=
1kΩ, 520 V/µs
(Note 8) V
O
=
6V
PP
GBW Unity Gain-Bandwidth R
L
=
1kΩ 105 MHz
φ
m
Phase Margin R
L
=
1kΩ 74 Deg
f (−3 dB) Bandwidth R
L
=
100Ω,A
V
=
+1 160 MHz
(Notes 9, 10) R
L
=
100Ω,A
V
=
+2 50
t
s
Settling Time 5 V
PP
Step, to 0.1
%
,65 ns
R
L
=
500Ω
t
r
,t
f
Rise and Fall Time A
V
=
+2, R
L
=
100Ω, 5.8 ns
(Note 10) V
O
=
0.4 V
PP
A
D
Differential Gain A
V
=
+2, R
L
=
150Ω 0.3
%
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