Datasheet
+5V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
=
25˚C, V
+
=
+5V, V
−
=
0V, V
CM
=
V
O
=
V
+
/2 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
=
1kΩto 145 V/µs
(Note 8) V
+
/2, V
O
=
1.8 V
PP
GBW Unity Gain-Bandwidth R
L
=
1k, to V
+
/2 80 MHz
φ
m
Phase Margin R
L
=
1k to V
+
/2 70 Deg
f (−3 dB) Bandwidth R
L
=
100Ω to V
+
/2, A
V
=
+1 200 MHz
(Notes 9, 10) R
L
=
100Ω to V
+
/2, A
V
=
+2 45
t
r
,t
f
Rise and Fall Time A
V
=
+2, R
L
=
100Ω,8 ns
(Note 10) V
O
=
0.2 V
PP
T.H.D. Total Harmonic Distortion 0.6 V
PP
Output, R
L
=
150Ω, 0.067
%
A
V
=
+2, f
=
1 MHz
0.6 V
PP
Output, R
L
=
150Ω, 0.33
A
V
=
+2, f
=
5 MHz
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5 kΩ in series with 100 pF.
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150˚C.
Note 4: The maximum power dissipation is a function of T
J(max)
, θ
JA
, and T
A
. The maximum allowable power dissipation at any ambient temperature is P
D
=
(T
J(max)
–T
A
)/θ
JA
. All numbers apply for packages soldered directly into a PC board.
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Differential input voltage is measured at V
S
=
±
15V.
Note 8: Slew rate is the average of the rising and fallng slew rates.
Note 9: Unity gain operation for
±
5V and
±
15V supplies is with a feedback network of 510Ω and 3 pF in parallel (see the Application Information section). For +5V
single supply operation, feedback is a direct short from the output to the inverting input.
Note 10: A
V
=
+2 operation with 2 kΩ resistors and 2 pF capacitor from summing node to ground.
Typical Performance Characteristics T
A
=
25˚C, R
L
=
1MΩ. unless otherwise specified
Supply Current vs
Supply Voltage
DS012348-66
Supply Current vs
Temperature
DS012348-67
Input Offset Voltage
vs Temperature
DS012348-68
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