LRC LR393

LESHAN RADIO COMPANY, LTD.
Dual Differential
Comparators
LR393
DESCRIPTION:
The LR393 consists of two independent voltage
comparators with an offset voltage specification as low as
2.0mV max. for two comparators which were designed
specifically to operation from a single power supply over a
wide range of voltages. Operate from split power supplies
is also possible,and the low power supply current drain is
independent of the magnitude of the power supply voltage.
These comparators also have a unique characteristic in
that the input common-mode voltage range includes ground,
even though operated from a single power supply voltage.
DIP-8
SOP-8
FEATURE::
z Wide supply voltage range: single supply operation: 2V to 36V, dual supply operation: f1V to f18V
z Very low supply current drain (0.8mA) independent of supply voltage(2.0mW/comparator at 5.0 VDC)
z Low input biasing current: 25nA
z Low input offset current: 5.0nA; Low input offset voltage: 5.0mV
z Input common-mode voltage range includes ground
z Differential input voltage range equal to the power supply voltage
z Output voltage compatible with TTL,DTL,ECL,MOS and CMOS logic systems.
ORDERING INFORMATION
BLOCK DIAGRAM
VCC
+ Input
− Input
Output
Package
LR393
DIP-8
LR393D
R2
2.1 k
Q3
Device
SOP-8
Q4
R4
Q5
Q6
Q14
2.0 k
PIN CONFIGURATION
F1
Output 1 1
8
Vcc
-Input 1 2
7
Output 2
Q10
Q1
Q8
Q9
Q16
Q12
Q2
R1
4.6 k
Q15
−
+
+Input 1 3
Q11
GND 4
NOTE: Diagram shown is for 1 comparator
6 -Input 2
−
+ 5
+Input 2
(Top View)
1/6
LESHAN RADIO COMPANY, LTD.
LR393
PIN DESCRIPTIONS
No
1
2
3
4
Description
Output 1
-Input1
+Input1
Ground
Symbol
OUT1
IN1˄-˅
IN1˄+˅
GND
No
5
6
7
8
Description
+Input2
-Input2
Output 2
Supply Voltage
Symbol
IN2˄+˅
IN2˄-˅
OUT2
Vcc
ABSOLUTE MAXIMUM RATINGS
Characteristics
Symbol
Single supply voltage
Dual supplies voltage
Differential Input Voltage
Input common-mode voltage
Output short-circuit to ground
Input Current
Maximum junction temperature
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Supply Voltage
Value
Max
r18
36
36
36
20
50
125
570
70
150
Min
Vcc
VIDR
VICR
IOG
IIN
TJ
PD
Tamb
Tstg
-0.3
0
-65
Unit
V
V
V
mA
mA
ć
mW
ć
ć
ELECTRICAL CHARACTERISTICS˄Un less otherwise specified :Vcc=5VˈTamb=25ć˅
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
Test conditions
0ć d Ta d 70ć
0ć d Ta d 70ć
0ć d Ta d 70ć
0ć d Ta d 70ć
RL=f dual comparator
RL=fˈdual comparator Vcc=30V
RL t 15K:ˈVcc=15V
VIN=TTL Logic SwingˈVREF=1.4Vˈ
VRL=5.0Vˈ RL=5.1K:
VRL=5.0Vˈ RL=5.1K:
Symbo
Mi
VIO
IIO
IIB
VICR
0
0
Icc
Gv
50
Typ.
r1.0
Max
r5.0
r9.0
r5.0
r50
r150
25
250
400
Vcc-1.5
Vcc-2.0
0.4
1.0
2.5
200
tRES
300
tRES
VID
ISINK
1.3
VIN˄-˅t 1.0VˈVIN˄+˅=0VˈVo d 1.5V
VIN˄-˅t 1.0VˈVIN˄+˅=0VˈISINK d 4.0mA
VIN˄-˅t 1.0VˈVIN˄+˅=0VˈISINK d 4.0mA VSAT
0ć d Ta d 70ć
VIN˄+˅t 1.0VˈVIN˄-˅=0VˈVo=5.0V
IOL
VIN˄+˅t 1.0VˈVIN˄-˅=0VˈVo=30V
0ć d Ta d 70ć
16
150
mV
nA
nA
V
mA
V/mV
ns
Vcc
6.0
Unit
ns
V
mA
400
700
mV
0.1
1000
nA
2/6
LESHAN RADIO COMPANY, LTD.
LR393
APPLICATION CIRCUIT
+15 V
Vin
R1
8.2 k
R4
220 k
R1
D1
6.8 k
R2
R5
220 k
*
LR393
+VCC
)
10 k
*
15 k
R3
10 M
LR393
Vin
VCC
)
D1 prevents input from going negative by more than 0.6 V.
Vin(min) [ 0.4 V peak for 1% phase distortion ().
Figure 2. Zero Crossing Detector
(Split Supply)
VCC
51 k
VCC
R
LR393
+
LR393
VC
C
+
VO
VO
+ Vref
+
51 k
RL
−
−
RL
10 k
0.001 F LR393
51 k
t
VCC
−
− VEE
Figure 1. Zero Crossing Detector
(Single Supply)
1.0 M
VO
−VEE
R1 + R2 = R3
R5
for small error in zero crossing.
R3 ≤
10
VCC
Vin(min)
Vin
10 k
‘‘ON’’ for t ­ tO + t
where:
Vref
)
t = RC ȏ n (
VCC
VCC
VO
0
t
Figure 3. Free−Running Square−Wave Oscillator
Vin
Vref
0
VO
0
VC
0
tO
Vref
ȏ
t
Figure 4. Time Delay Generator
3/6
LESHAN RADIO COMPANY, LTD.
LR393
TYPICAL CHARACTERISTICS CURVES
Figure 1. Supply Current vs Supply Voltage
Figure 2. Input Current vs Supply Voltage
Figure 3. Output Saturation Voltage vs Sink Current
Figure 4. Response Time for Various Input
Overdrive-Negative Transition
Figure 5. Response Time for Various Input
Overdrive-Positive Transition
4/6
LESHAN RADIO COMPANY, LTD.
LR393
Mechanical Dimensions
DIP-8
Unit: mm
f
e
f
e
e
e
f
f
e
¶hf
f
0$;
5
f
0,1
5/6
LESHAN RADIO COMPANY, LTD.
LR393
Mechanical Dimensions (Continued)
f
e
f
f
e
Unit: mm
f
f
SOP-8
e
e
'
f
f
¶
'
e
fe
5
5
f
e
fe
6/6