LESHAN RADIO COMPANY, LTD.
Low Power Low Offset Voltage
Quad Comparators
DESCRIPTION:
The LR339 consists of four independent precision
voltage comparators.These were designed specifically
to operate from a signal power supply over a wide range
of voltage.Operation from split power supplies is also
possible and the low power supply current drain is
independent of the magnitude of the power supply
voltage.The LR339 also have a unique characteristic in
that the input common-mode voltage range includes
ground,even though operated from a single power
supply voltage.
LR339
DIP-14
SOP-14
FEATURE:
Low input biasing current: 25nA(Typ.)
Low input offset current: 5.0nA(Typ.)
Low output saturation voltage: 130mV
Output voltage compatible with TTL,CMOS
ORDERING INFORMATION
Device
LR339
LR339D
Package
DIP-14
SOP-14
BLOCK DIAGRAM
V
CC
+ Input
− Input
Output
PIN CONFIGURATION
Output 2
Output 1
V
CC
− Input 1
+ Input 1
− Input 2
+ Input 2
1
2
3
4
5
6
7
14
13
12
Output 3
Output 4
GND
+ Input 4
− Input 4
+ Input 3
− Input 3
*
1
)
*
2
)
)
4
*
)
*
11
10
9
8
3
GND
NOTE: Diagram shown is for 1 comparator.
(Top View)
1/6
LESHAN RADIO COMPANY, LTD.
PIN DESCRIPTIONS
No
1
2
3
4
5
6
7
Description
Output 2
Output 1
Supply Voltage
-Input1
+Input1
-Input2
+Input2
Symbol
OUT2
OUT1
Vcc
IN1 -
IN1 +
IN2 -
IN2 +
No
8
9
10
11
12
13
14
Description
-Input3
+Input3
-Input4
+Input4
Ground
Output 4
Output 3
LR339
Symbol
IN3 -
IN3 +
IN4 -
IN4 +
GND
OUT4
OUT3
ABSOLUTE MAXIMUM RATINGS
Characteristics
Symbol
Supply Voltage
Vcc
Differential Input Voltage
V
IDR
Input Voltage
V
ICMR
Input Current
I
SC
P
D
Power Dissipation *
Operating Temperature Range
Tamb
Storage Temperature Range
Tstg
Note *
Power dissipation reduces 8 mW/°C for using above Ta=25°C
Value
36 or 18
36
-0.3~Vcc
50
1.0
0~75
-65~150
Unit
V
V
V
W
ELECTRICAL CHARACTERISTICS
Characteristics
Input Offset Voltage
Input Offset Current
Input Bias Current
Input
Common-mode
Voltage Range
Supply Current
Voltage Gain
Large Signal Response
Time
Response Time
Input Differential Voltage
Output Sink Current
output saturation voltage
Output Leakage Current
0
0
0
0
Ta
Ta
Ta
Ta
Unless otherwise specified :Vcc=5V Tamb=25
Symbol
V
IO
I
IO
I
IB
V
ICR
Icc
Gv
t
RES
t
RES
V
ID
I
SINK
V
SAT
I
OL
50
0
0
Mi
Typ.
2.0
Max
Unit
mV
nA
nA
V
mA
V/mV
ns
ns
V
mA
mV
nA
5.0
9.0
5.0
50
150
25
250
400
Vcc-1.5
Vcc-2.0
0.8
2.0
1.0
2.5
200
300
1.3
Vcc
6.0
16
130
0.1
1000
400
700
Test conditions
70
70
70
70
R
L
=
Vcc=30V
R
L
=
R
L
15K
Vcc=15V
V
IN
=TTL Logic Swing V
REF
=1.4V
R
L
=5.1K
V
RL
=5.0V
V
RL
=5.0V
R
L
=5.1K
V
IN -
1.0V V
IN +
=0V Vo 1.5V
V
IN -
1.0V V
IN +
=0V I
SINK
4.0mA
1.0V V
IN +
=0V I
SINK
V
IN -
V
IN
V
IN
0
+
1.0V V
IN
+
1.0V V
IN
Ta 70
-
-
=0V Vo=5.0V
=0V Vo=30V
2/6
LESHAN RADIO COMPANY, LTD.
APPLICATION CIRCUIT
+ V
CC
R3
10 k
V
in
+ V
CC
R
ref
−
+
R2
R1
1.0 M
V
ref
[
V
CC
R1
R
ref
+ R1
+ V
CC
LR339
10 k
V
O
R
ref
V
ref
R1
−
R2
10 k
R3
1.0 M
V
ref
=
V
CC
R1
R
ref
+ R1
+
V
O
10 k
V
ref
10k
Vi
n
R3
]
R1 / / R
ref
/ / R2
V
H
=
R2
R1 / / R
ref
R1/ / R
ref
+ R2
Rref / / R1
[V
O(max)
− V
O(min)
]
R2
[
R1 / / R
ref
Amount of Hysteresis V
H
R2
V
H
=
[(V
−V
]
R2 + R3
O(max) O(min)
Figure 1. Inverting Comparator
with Hysteresis
V
CC
Figure 2. Noninverting Comparator
with Hysteresis
V
CC
≥
4.0 V
10 k
R1
V
O
R3
330 k
R4
330 k
V
CC
T1
V
in
V
ref
R
S
R
L
+
−
+
C
R2
V
CC
100 k
−
+
R1
R
S
= Source Resistance
R1
]
R
S
Logic
CMOS
TTL
Device
1/4 MC14001
1/4 MC7400
V
CC
(V)
+15
+5.0
R
L
kW
100
10
330 k
T2
T1 = T2 = 0.69 RC
7.2
f
[
C(mF)
R2 = R3 = R4
R1
[
R2 // R3 // R4
Figure 3. Driving Logic
+15 V
R4
220 k
6.8 k
R2
R5
220 k
*
)
Figure 4. Squarewave Oscillator
R1
8.2 k
V
in
D1
10 k
V
O
V
in(min)
≈
0.4 V peak for 1% phase distortion (Dq).
V
in
V
CC
V
in(min)
15 k
R3
10 M
*
10 k
V
O
q
D1 prevents input from going negative by more than 0.6 V.
R1 + R2 = R3
R5
R3
≤
for small error in zero crossing
10
V
in
+
V
EE
V
CC
V
O
V
EE
Dq
q
Figure 5. Zero Crossing Detector
(Single Supply)
Figure 6. Zero Crossing Detector
(Split Supplies)
3/6
LESHAN RADIO COMPANY, LTD.
TYPICAL
CHARACTERISTICS CURVES
(V
CC
= 15 Vdc, T
A
= +25°C (each comparator) unless otherwise noted.)
LR339
1.40
NORMALIZED OFFSET VOLTAGE
I IB, INPUT BIAS CURRENT (nA)
48
42
36
30
24
18
12
6.0
0
−50
−25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
0
4.0
8.0
12
16
20
24
V
CC
, POWER SUPPLY VOLTAGE (Vdc)
28
32
T
A
= +125°C
T
A
= −55° C
T
A
= +25° C
1.20
1.00
0.80
0.60
Figure
7.
Normalized Input Offset Voltage
8.0
IO, OUTPUT CURRENT (mA)
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0
100
200
300
T
A
= −55° C
T
A
= +125°C
T
A
= +25° C
Figure
8.
Input Bias Current
400
500
V
sat
, OUTPUT SATURATION VOLTAGE (mV)
Figure
9.
Output Sink Current versus
Output Saturation Voltage
4/6
LESHAN RADIO COMPANY, LTD.
LR339
Mechanical Dimensions
DIP-14
Unit: mm
5/6
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