Datasheet

±
5V AC 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)
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
2
Current Noise
T.H.D. Total Harmonic Distortion 2 V
PP
Output, R
L
=
150Ω, 0.1
%
A
V
=
+2, f
=
1 MHz
2V
PP
Output, R
L
=
150Ω, 0.6
A
V
=
+2, f
=
5 MHz
+5V DC 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)
V
OS
Input Offset Voltage 2.4 mV
I
B
Input Bias Current 4 µA
I
OS
Input Offset Current 0.04 µA
R
IN
Input Resistance Common Mode 2.6 MΩ
Differential Mode 3.4 MΩ
C
IN
Input Capacitance Common Mode 2.3 pF
CMRR Common Mode 2V ≤ V
CM
≤ 3V 65 dB
Rejection Ratio
+PSRR Positive Power Supply 4.6V ≤ V
+
≤ 5V 85 dB
Rejection Ratio
−PSRR Negative Power Supply 0V ≤ V
−
≤ 0.4V 61 dB
Rejection Ratio
V
CM
Input Common-Mode CMRR ≥ 45 dB 3.5 V
Voltage Range min
1.5 V
max
A
V
Large Signal R
L
=
2kΩto V
+
/2 64 dB
Voltage Gain
V
O
Output Swing R
L
=
2kΩto V
+
/2, High 3.7 V
R
L
=
2kΩto V
+
/2, Low 1.3
R
L
=
150Ω to V
+
/2, High 3.48
R
L
=
150Ω to V
+
/2, Low 1.59
I
SC
Output Short Circuit Sourcing 33 mA
Current Sinking 20 mA
I
S
Supply Current 4.8 mA
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