Datasheet

±
15V DC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for T
J
=
25˚C, V
+
=
+15V, V
−
=
−15V, V
CM
=
V
O
=
0V and R
L
>
1MΩ.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Typ
(Note 5)
LM7121I Units
Limit
(Note 6)
I
S
Supply Current 5.3 6.6 mA
7.5 max
±
15V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
=
25˚C, V
+
=
15V, V
−
=
−15V, 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, 1300 V/µs
(Note 8) V
O
=
20 V
PP
GBW Unity Gain-Bandwidth R
L
=
1kΩ 175 MHz
φ
m
Phase Margin 63 Deg
f (−3 dB) Bandwidth R
L
=
100Ω,A
V
=
+1 235 MHz
(Notes 9, 10) R
L
=
100Ω,A
V
=
+2 50
t
s
Settling Time 10 V
PP
Step, to 0.1
%
,74 ns
R
L
=
500Ω
t
r
,t
f
Rise and Fall Time A
V
=
+2, R
L
=
100Ω, 5.3 ns
(Note 10) V
O
=
0.4 V
PP
A
D
Differential Gain A
V
=
+2, R
L
=
150Ω 0.3
%
φ
D
Differential Phase A
V
=
+2, R
L
=
150Ω 0.65 Deg
e
n
Input-Referred f
=
10 kHz
17
Voltage Noise
i
n
Input-Referred f
=
10 kHz
1.9
Current Noise
T.H.D. Total Harmonic Distortion 2 V
PP
Output, R
L
=
150Ω, 0.065
%
A
V
=
+2, f
=
1 MHz
2V
PP
Output, R
L
=
150Ω, 0.52
A
V
=
+2, f
=
5 MHz
±
5V DC 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)
V
OS
Input Offset Voltage 1.6 8 mV
15 max
I
B
Input Bias Current 5.5 9.5 µA
12 max
I
OS
Input Offset Current 0.07 4.3 µA
7.0 max
R
IN
Input Resistance Common Mode 6.8 MΩ
Differential Mode 3.4 MΩ
www.national.com3