LND393
Dual Differential Comparators
DATA
SHEET
GENERAL DESCRIPTION
• Wide supply (Voltage range single
and dual supplies 5V to 30V, ±2.5V to
±15V)
• Very Low supply current drain(0.8mA)
• Low input biasing current(25nA)
• Low input offset voltage(±5nA)
• Maximum offset voltage(±5mV)
• Input common-mode voltage range
includes ground
• Differential input voltage range equal
to the power supply voltage
• Output voltage compatible with TTL,
DTL,ECL ,MOS and CMOS logic
systems
FEATURES
The LND393 consists of two independent
precision voltage comparators with an offset
voltage specification as low as 2.0 mV max for
two comparators. They are specifically
designed to operate from a single power supply
over a wide range of voltages. In addition, the
comparators have the unique ability in that the
input common-mode voltage range includes
ground, while operated from a single power
supply 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.
Application areas include limit comparators,
simple analog to digital converters, pulse,
squarewave and time delay generators: wide
range VCO, MOS clock timers, multi-vibrators
and high voltage digital logic gates. The
LND393 was designed to directly interface with
TTL and CMOS. When the LND393 is operated
from both plus and minus power supplies, it will
directly interface with MOS logic where their low
power drain is a distinct advantage over
standard comparators.
ADVANTAGES
• High precision comparators
• Reduce VOS drift over temperature
• Power drain suitable for battery
operation
• Compatible with all forms of logic
• Allows sensing near ground
• Eliminates need for dual supplies
PIN CONFIGURATION
AB
18
2
3
45
6
7
OUTPUT A
INVERTING
INPUT A
NON-INVERTING
INPUT A
GROUND
V+
OUTPUT B
INVERTING
INPUT B
NON-INVERTING
INPUT B
++--
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •
Parameter Test Conditions * Min Typ Max Unit
25°C 2 5
VIO
Input offset voltage
VCC=5V to 30V
VIC=VICR min,
VO=1.4V Full range 9
mV
25°C 5 50
IIO
Input offset current
VO=1.4V
Full range 150
nA
25°C -25 -250
IIB
Input bias current
VO =1.4V
Full range -400
nA
25°C 0 VCC -1.5VICR
Common-mode input
voltage range** Full
Range
0 VCC -2
V
AVD
Large-signal differential
voltage amplification
VCC =15V
VO=1.4V to 11.4 V,
RL≥15kΩ
25°C 50 200 V/mV
VOH =5V, VID =1V 25°C 0.1 50 nAIOH
High-level output current VOH =30V, VID =1V Full
Range
1 µA
25°C 150 400 mV
VOL Low-Level output
voltage
IOL=4mA, VID=-1V
Full
Range
700 mA
IOL
Low-level output current
VOL=1.5V,VID =-1V 25°C 6 mA
VCC=5V 25°C 0.8 1 mAICC
Supply current
RL=∞
VCC=30V Full
Range
2.5 mA
*Full range (MIN to Max), for the LND393 is 0°C to 70°C. All characteristics are measured with zero common-mode
input voltage unless otherwise specified.
**The voltage at either input or common-mode should not be allowed to go negative by more than 0.3V. The upper
end of the common-mode voltage range is VCC –1.5V, but either or both inputs can go to 30V without damage.
Parameter Test Conditions Min Typ Max Unit
100-mV input step with 5-mV
overdrive
1.3Response time RL connected to 5V
through 5.1 kΩ,
CL=15pF*(see Note
1)
TTL-level input step 0.3
µs
*CL includes probe and jig capacitance.
Note 1: The response time specified is the interval between the input step function and the instant when the output
crosses 1.4V.
LND393
SWITCHING CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •
LND393
TYPICAL APPLICATIONS
(V+ =5.0Vdc)
LND393A
+5.0 V
+
-
DC
DRIVING CMOS
100 K
1
2
3
LND393A
V
O
V+
+V
+V
IN
REF
+
-
BASIC COMPARATOR
3.0 K
+5.0 V
-
LND393A
+
DC
DRIVING TTL
10 K
1
2
3
1
2
3
V
O
V+
+V
+V
IN
REF
+
-
NON INVERTING COMPARATOR
WITH HYSTERESIS
1/2 LND193
3.0 K
10K
10M
V+
REF -
+V
V
+V
INVERTING COMPARATOR
WITH HYSTERESIS
O
IN +
1/2 LND193
3.0 K
1M
1M
1M
1/2LND193
V+ (12 Vdc)
+
-
LIMIT COMPARATOR
-
+
IN
+V
1/2LND193
REF LOW
+V
+V
REF HI
S
2R
S
2R
RS
10.0 K
1 2
LAMP
1
2
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •
LND393
1/2 LND193
V+
+
-
+15 Vdc
V
O
D1
D2
R1
R2
*
* For Large Raios of R1/R2, D1 can be
omitted.
t0t1 t2
6 s
µ
60 s
µ
PULSE GENERATOR
15k
1M
1M
1M
1M
80 pF
100k
-
V+
+
1/2 LND193
ZERO DETECTOR CROSSING
(SINGLE POWER SUPPLY)
V
IN
V
O
5.1k
10k
20M
5.1k5.1k
100k 100k
1/2 LND193
V
O
V+
+
-
V+
SQUAREWAVE OSCILLATOR
0
V+
1-100kHz
4.3K
100K
100K
100K
100K
75 pF
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •
