DATA SHEET
LND393
Dual Differential Comparators
GENERAL DESCRIPTION
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.
PIN CONFIGURATION
OUTPUT A
INVERTING
INPUT A
NON-INVERTING
INPUT A
GROUND
1
2
3
4
AB
++--
V+
8
OUTPUT B
7
INVERTING
INPUT B
6
NON-INVERTING
INPUT B
5
FEATURES
• 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
ADVANTAGES
• High precision comparators
• Reduce V
• Power drain suitable for battery
operation
• Compatible with all forms of logic
• Allows sensing near ground
• Eliminates need for dual supplies
drift over temperature
OS
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 •
www.lineardimensions.com
•
LND393
ELECTRICAL CHARACTERISTICS
Parameter Test Conditions * Min Typ Max Unit
V
IO
Input offset voltage
I
IO
Input offset current
I
IB
Input bias current
ICR
Common-mode input
voltage range**
A
VD
Large-signal differential
voltage amplification
OH
High-level output current
=5V to 30V
V
CC
V
IC=VICR
V
O
V
O
V
O
V
CC =
V
O
R
L≥
V
OH =
V
OH =
min,
=1.4V
=1.4V
=1.4V
15V
=1.4V to 11.4 V,
15kΩ
5V, V
ID =
30V, V
ID
25°C
Full range 9
25°C
Full range 150
25°C
Full range -400
25°C
Full
Range
25°C
1V
25°C
=1V Full
0 V
0 V
50 200 V/mV
Range
V
Low-Level output
OL
voltage
IOL=4mA, VID=-1V
25°C
Full
Range
I
OL
V
OL=
1.5V,V
ID
=-1V
25°C
6 mA
Low-level output current
V
CC
Supply current
=∞
R
L
5V
CC=
=30V Full
V
CC
25°C
Range
*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 V
–1.5V, but either or both inputs can go to 30V without damage.
CC
2 5
5 50
-25 -250
-1.5V
CC
-2
CC
0.1 50 nAI
1
150 400 mV
700 mA
0.8 1 mAI
2.5 mA
mV
nA
nA
V
µA
SWITCHING CHARACTERISTICS
Parameter Test Conditions Min Typ Max Unit
100-mV input step with 5-mV
through 5.1 kΩ,
15pF*(see Note
C
L=
1)
*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.
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 •
overdrive
TTL-level input step 0.3
1.3Response time RL connected to 5V
µs
www.lineardimensions.com
•
TYPICAL APPLICATIONS
LND393
(V+ =5.0Vdc)
+V
+V
IN
REF
+
LND393A
-
BASIC COMPARATOR
+
LND393A
-
+5.0 V
DC
10 K
+5.0 V
DC
V+
100 K
3.0 K
+
LND393A
-
V
O
1
2
3
DRIVING CMOS
V+
3.0 K
1
2
1
2
3
3
+V
REF
+V
IN
10K
-
1/2 LND193
+
V
O
10M
NON INVERTING COMPARATOR
DRIVING TTL
V+
3.0 K
+V
REF
+V
IN
1M
-
1/2 LND193
+
+V
V
O
REF HI
+V
IN
1 2
1M
1M
INVERTING COMPARATOR
+V
REF LOW
WITH HYSTERESIS
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 •
WITH HYSTERESIS
+
1/2LND193
-
+
1/2LND193
-
2R
2R
R
S
S
S
LIMIT COMPARATOR
V+ (12 Vdc)
10.0 K
1
2
LAMP
www.lineardimensions.com
•
V+
LND393
D1
D2
15k
*
60 s
µ
6 s
µ
t0t1 t2
V
O
V+
1M
4.3K
100K
-
75 pF
V+
100K
1/2 LND193
+
100K
V
O
V+
0
1-100kHz
80 pF
+15 Vdc
100K
* For Large Raios of R1 /R2, D1 can be
SQUAREWAVE OSCILLATOR
omitted.
1M
R1
100k
R2
-
1/2 LND193
+
1M
1M
PULSE GENERATOR
V+
5.1k
100k 100k
V
IN
5.1k5.1k
-
1/2 LND193
+
20M
10k
V
O
ZERO DETECTOR CROSSING
(SINGLE POWER SUPPLY)
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 •
www.lineardimensions.com
•
Loading...