UNISONIC TECHNOLOGIES CO., LTD
LM321
LOW POWER SINGLE OP AMP
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
The UTC
LM321’s
quiescent current is only 430µA (5V). The
UTC
LM321
brings performance and economy to low power
systems, With a high unity gain frequency and a specified 0.4V/µs
slew rate. The input common mode range includes ground and
therefore the device is able to operate in single supply
applications as well as in dual supply applications. It is also
capable of comfortably driving large capacitive loads.
FEATURES
* Low supply current 430µA
* V
CC
=5V, T
A
=25°C. Typical values unless specified.
* Gain-Bandwidth product 1MHz
* Low input bias current 45nA
* Wide supply voltage range +3V~+32V
* Stable with high capacitive loads
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
LM321L-AE5-R
LM321G-AE5-R
Package
SOT-23-5
Packing
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2017 Unisonic Technologies Co., Ltd
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QW-R104-007.E
LM321
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
PIN NAME
+IN
V
-
-IN
OUTPUT
V
+
DESCRIPTION
Non-inverting input
Ground
inverting input
Output
Power supply
BLOCK DIAGRAM
+IN 1
+
V
-
5 V
+
2
-
4 OUTPUT
-IN 3
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QW-R104-007.E
LM321
ABSOLUTE MAXIMUM RATING
LINEAR INTEGRATED CIRCUIT
PARAMETER
SYMBOL
RATINGS
UNIT
+
−
Supply Voltage (V - V )
V
CC
32
V
Differential Input Voltage
V
I(DIFF)
±Supply Voltage
V
Input Voltage
V
IN
-0.3~+32
V
Input Current (V
IN
<−0.3V) (Note 2)
50
mA
+
Output Short Circuit to GND, V
≤15V
and
Continuous
T
A
=25°C (Note 3)
Junction Temperature
T
J
150
°C
Storage Temperature
T
STG
-65~+150
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. This input current will only exist when the voltage at any of the input leads is driven negative. It is due to
the collector base junction of the input PNP transistors becoming forward biased and thereby acting as
input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on
the IC chip. This transistor action can cause the output voltages of the op amps to go to the V
+
voltage
level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not
destructive and normal output states will re-establish when the input voltage, which was negative, again
returns to a value greater than -0.36V (at 25°C).
3. 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.
OPERATING RATINGS
SYMBOL
T
A
V
+
RATINGS
-40~85
3~30
UNIT
°C
V
PARAMETER
Temperature Range
Supply Voltage
THERMAL DATA
SYMBOL
θ
JA
RATINGS
265
UNIT
°С/W
PARAMETER
Junction to Ambient
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QW-R104-007.E
LM321
ELECTRICAL CHARACTERISTICS
LINEAR INTEGRATED CIRCUIT
(Unless otherwise specified, all limits guaranteed for T
A
=25˚C, V
+
=5V, V
−
=0V, V
O
=1.4V.)
MIN
PARAMETER
SYMBOL
TEST CONDITIONS
(Note 1)
Input Offset Voltage
V
OS
(Note 3)
Input Bias Current (Note 4)
I
B
Input Offset Current
I
OS
V
+
=30V (Note 5)
Input Common-Mode Voltage
V
CM
0
Range
For CMRR>=50dB
(V
+
=15V, R
L
=2kΩ
25
Large Signal Voltage Gain
A
V
V
O
=1.4V~11.4V)
15
+
Power Supply Rejection Ratio
PSRR
R
S
≤10kΩ,
V
≤5V~30V
65
Common Mode Rejection Ratio
CMRR R
S
≤10kΩ
65
+
V =30V, R
L
=2kΩ
26
V
OH
+
Output Swing
27
V =30V, R
L
=10kΩ
+
V
OL
V =5V, R
L
=10kΩ
V
+
=5V
Supply Current, No Load
I
S
V
+
=30V
Output Current Sourcing
I
SOURCE
V
ID
=+1V, V
+
=15V, V
O
=2V
20
+
V
ID
=-1V, V =15V, V
O
=2V
10
Output Current Sinking
I
SINK
+
12
V
ID
=-1V, V =15V, V
O
=0.2V
Output Short Circuit to Ground
I
O
V
+
=15V
(Note 6)
V
+
=15V, R
L
=2kΩ, V
IN
=0.5~3V,
Slew Rate
SR
C
L
=100pF, Unity Gain
V
+
=30V, f=100kHz, V
IN
=10mV,
Gain Bandwidth Product
GBW
R
L
=2kΩ, C
L
=100pF
Phase Margin
φm
f=1kHz, A
V
=20dB, R
L
=2kΩ,
Total Harmonic Distortion
THD
V
O
=2V
PP
, C
L
=100pF, V
+
=30V
Equivalent Input Noise Voltage
e
n
f=1kHz, R
S
=100Ω, V
+
=30V
TYP
MAX
(Note 2) (Note 1)
2
7
45
250
5
50
V
+
-1.5
100
100
85
28
5
0.430
0.660
40
20
100
40
0.4
1
60
0.015
40
UNIT
mV
nA
nA
V
V/mV
V/mV
dB
dB
V
V
mV
mA
mA
mA
mA
µA
mA
V/µs
MHz
deg
%
nV Hz
20
1.15
2.85
85
Notes: 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~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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 7
QW-R104-007.E
LM321
SIMPLIFIED SCHEMATIC
LINEAR INTEGRATED CIRCUIT
V
+
6µA
4µA
100µA
Q5
Q6
C
C
Q2
INPUTS-
Q1
Q3
Q4
Q7
R
SC
OUTPUT
Q13
Q11
INPUTS+
Q10
Q8
V
-
Q9
Q12
50µA
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R104-007.E
FPGA/CPLD
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