Datasheet

LM321
www.ti.com SNOS935B –FEBRUARY 2001–REVISED MARCH 2013
Electrical Characteristics
Unless otherwise specified, all limits specified for at T
A
= 25°C; V
+
= 5V, V
−
= 0V, V
O
= 1.4V. Boldface limits apply at
temperature extremes.
Symbol Parameter Conditions Min Typ Max Units
(1) (2) (1)
V
OS
Input Offset Voltage
(3)
2 7 mV
9
I
OS
Input Offset Current 5 50 nA
150
I
B
Input Bias Current
(4)
45 250 nA
500
V
CM
Input Common-Mode Voltage Range V
+
= 30V
(5)
0 V
+
- 1.5 V
For CMRR > = 50dB V
+
-2
A
V
Large Signal Voltage Gain (V
+
= 15V, R
L
= 2kΩ 25 100 V/mV
V
O
= 1.4V to 11.4V) 15
PSRR Power Supply Rejection Ratio R
S
≤ 10kΩ, 65 100 dB
V
+
≤ 5V to 30V
CMRR Common Mode Rejection Ratio R
S
≤ 10kΩ 65 85 dB
V
O
Output Swing V
OH
V
+
= 30V, R
L
= 2kΩ 26
V
V
+
= 30V, R
L
= 10kΩ 27 28
V
OL
V
+
= 5V, R
L
= 10kΩ 5 20 mV
I
S
Supply Current, No Load V
+
= 5V 0.430 1.15 mA
0.7 1.2
V
+
= 30V 0.660 2.85
1.5 3
I
SOURCE
Output Current Sourcing V
ID
= +1V, V
+
= 15V, 20 40 mA
V
O
= 2V 10 20
I
SINK
Output Current Sinking V
ID
= −1V 10 20
V
+
= 15V, V
O
= 2V 5 8 mA
V
ID
= −1V
V
+
= 15V, V
O
= 0.2V 12 100 µA
I
O
Output Short Circuit to Ground V
+
= 15V 40 85 mA
(6)
SR Slew Rate V
+
= 15V, R
L
= 2kΩ,
V
IN
= 0.5 to 3V 0.4 V/µs
C
L
= 100pF, Unity Gain
GBW Gain Bandwidth Product V
+
= 30V, f = 100kHz,
V
IN
= 10mV, R
L
=2kΩ, 1 MHz
C
L
= 100pF
φm Phase Margin 60 deg
THD Total Harmonic Distortion f = 1kHz, A
V
= 20dB
R
L
= 2kΩ, V
O
= 2V
PP
, 0.015 %
C
L
= 100pF, V
+
= 30V
e
n
Equivalent Input Noise Voltage f = 1kHz, R
S
= 100Ω 40
nV/
V
+
= 30V
(1) All limits are specified by testing or statistical analysis.
(2) Typical values represent the most likely parametric norm.
(3) V
O
≅ 1.4V, R
S
= 0Ω with V
+
from 5V to 30V; and over the full input common-mode range (0V to V
+
- 1.5V) at 25°C.
(4) The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the
state of the output so no loading change exists on the input lines.
(5) The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V (at 25°C). The
upper end of the common-mode voltage range is V
+
- 1.5V at 25°C, but either or both inputs can go to +32V without damage,
independent of the magnitude of V
+
.
(6) Short circuits from the output V
+
can cause excessive heating and eventual destruction. When considering short circuits to ground the
maximum output current is approximately 40mA independent of the magnitude of V
+
. At values of supply voltage in excess of +15V,
continuous short circuits can exceed the power dissipation ratings and cause eventual destruction.
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