National Semiconductor LP265, LP365 Technical data

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LP265/LP365 Micropower Programmable Quad Comparator
LP265/LP365 Micropower Programmable Quad Comparator
December 1994
General Description
The LP365 consists of four independent voltage compara­tors. The comparators can be programmed, four at the same time, for various supply currents, input currents, re­sponse times and output current drives. This is accom­plished by connecting a single resistor between the V and I
pins.
SET
CC
These comparators can be operated from split power sup­plies or from a single power supply over a wide range of voltages. The input can sense signals at ground level even with single supply operation. The unique output NPN tran­sistor stages are uncommitted to either power supply. They can be connected directly to various logic system supplies so that they are highly flexible to interface with various logic families.
Application areas include battery power circuits, threshold detectors, zero crossing detectors, simple serial A/D con­verters, VCO, multivibrators, voltage converters, power se­quencers, and high performance V/F converters, and RTD linearization.
Typical Connection
Features
Y
Single programming resistor to tailor power consump­tion, input current, speed and output current drive capability
Y
Wide single supply voltage range or dual supplies (4 V
to 36 VDCorg2.0 VDCtog18 VDC)
DC
Y
Low supply current drain (10 mA) and low power consumption (10 mW/comparator)
e
V
5
CC
Y
Y
VDC
Uncommitted output stageÐselectable output levels Output directly compatible with DTL, TTL, CMOS, MOS
@
e
I
SET
or other special logic families
Y
Input common-mode range includes ground
Y
Differential input voltage equal to the power supply voltage
Connection Diagram
Dual-In-Line Package
0.5 mA
TL/H/5023– 1
Programming Equation
(Va)b(Vb)b1.3V
e
I
SET
I
SUPPLY
C
1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.
&
22
TL/H/5023
R
SET
c
I
SET
Order Number LP365M, LP365AN or LP365N
See NS Package Numbers M16A or N16A
TL/H/5023– 2
Absolute Maximum Ratings
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications.
Supply Voltage 36 V
Differential Input Voltage
Input Voltage (Note 1)
Output Short Circuit to VE(Note 2) Continuous
V
with Respect to V
OUT
E
b
V
E
ESD Tolerance (Note 10) 2000V
DC
b
0.3V toa36 V
7VsV
OUT
org18 V
g
36 V
s
a
V
E
DC
DC
DC
36V
Power Dissipation (Note 3) 500 mW 500 mW
M Package N Package
T
Max 115§C 115§C
j
i
jA
Lead Temp.
(SolderingÐ10 sec.) 260 (Vapor PhaseÐ60 sec.) 215
(InfraredÐ15 sec.) 220 Operating Temp. Range LP365: 0 Storage Temp. Range
115§C/W 90§C/W
C
§
s
a
70§C
A
s
a
150§C
A
b
40§CsT
C
§
C
§
CsT
§
Electrical Characteristics (Note 4) Low power V
Symbol Parameter Conditions
V
OS
I
OS
I
B
A
VOL
V
CM
Input Offset V Voltage R
Input Offset V Current LP265
Input Bias V Current LP265
Large Signal R Voltage Gain (Min)
Input Common­Mode Voltage (Max)
e
OV,
CM
e
100 (Max)
S
e
0V 2 20 50 425 75
CM
e
0V 10 50 125 15 75 200
CM
e
100k
L
Range
CMRR Common-Mode 0sV
Rejection Ratio (Min)
PSRR Supply Voltage
Rejection Ratio
I
S
V
OH
V
OL
I
SINK
I
LEAK
t
R
Supply Current All Inputse0V,
Output Voltage V High V
Output Voltage V Low (Max)
Output Sink V Current V
Output Leakage V Current V
Response Time V
s
CM
g
2.5VsV
s
g
3.5V (Min)
e %
R
L
e
5V,
C
e
0V, 4.9 4.5 4.9 4.5
E
e
R
100k
L
e
0V
E
e
0V,
E
e
0.4V (Min)
O
e
5V,
C
e
0V (Max)
E
e
5V,
CC
e
V
0V,
E
e
R
5k, 4 4 ms
L
e
C
10 pF
L
(Note 7)
Typ Limit Limit Typ Limit Limit (Limit)
(Note 5) (Note 6) (Note 5) (Note 6)
13 636 9
500 50 50 300 25 25
3V
S
85 75 70 80 75 70
75 65 65 70 65
215 250 300 225 275 300
2.4 1.2 0.6 2.0 0.8 0.4
2505000 2 100 5000
e
S
5V, I
SET
e
10 mA
LP365A LP365
Tested Design Tested Design Units
mV
nA
425 150
(Max)
nA
15 75 300
(Max)
V/mV
0 0 0 0
3 3 3 3
V
V
(Min)
dB
65 dB
mA
(Max)
V
(Min)
0.4
0.4
0.4 0.4
V
mA
nA
2
Electrical Characteristics (Continued) (Note 8) High power V
e
g
S
15V, I
SET
e
100 mA
LP365A LP365
Symbol Parameter Conditions
Tested Design Tested Design
Typ Limit Limit Typ Limit Limit
Units
(Limit)
(Note 5) (Note 6) (Note 5) (Note 6)
V
OS
I
OS
I
B
A
VOL
V
CM
Input Offset V Voltage R
Input Offset V Current LP265
Input Bias V Current LP265
Large Signal R Voltage Gain (Min)
Input Common­Mode Voltage (Max)
e
0V,
CM
e
100 (Max)
S
e
0V 5 50 100 10 90 200
CM
13 636 9
10 90 500
e
0V 60 200 500 80 300 500
CM
80 300 800
e
15k
L
500 100 100 500 100 100
b
15
b
15
b
15
b
15
mV
(Max)
(Max)
V/mV
Range
13 13 13 13
CMRR Common-Mode
Rejection Ratio
PSRR Supply Voltage
Rejection Ratio
I
S
V
OH
V
OL
I
SINK
I
LEAK
t
R
Note 1: The input voltage is not allowed to go 0.3V above Vaorb0.3V below Vbas this will turn on a parasitic transistor causing large currents to flow through the device.
Note 2: Short circuits from the output to V allowed to exceed 30 mA. The output should not be shorted to V
Note 3: For operating at elevated temperatures, these devices must be derated based on a thermal resistance of i
Note 4: Boldface numbers apply at temperature extremes. All other numbers apply at T
V
C
Note 5: Guaranteed and 100% production tested.
Note 6: Guaranteed (but not 100% production tested) over the operating temperature and supply voltage ranges. These limits are not used to calculate out-going
quality levels.
Note 7: The response time specified is for a 100 mV input step with 5 mV overdrive.
Note 8: Boldface numbers apply at temperature extremes. All other numbers apply at T
V
C
Note 9: See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ for other methods of soldering surface mount devices.
Note 10: Human body model, 1.5 kX in series with 100 pF.
Supply Current All Inputse0V, 2.6 3 3.3 2.8 3.5 3.7
Output Voltage V High V
Output Voltage V Low (Max)
Output Sink V Current V
Output Leakage V Current V
Response Time V
e
5V as shown in the Typical Connection diagram.
e
5V as shown in the Typical Connection diagram.
b
15VsV
s
g s
R
R
V R C (Note 7)
CM
13V (Min)
10VsV
S
g
15V (Min)
e %
, LP265
L
e
5V,
C
e
0V, 4.9 4.5 4.9 4.5
E
e
100k
L
e
0V
E
e
0V,
E
e
0.4V (Min)
O
e
15V,
C
eb
15V (Max)
E
e
5V,
CC
e
0V,
E
e
5k, 1.0 1.0 ms
L
e
10 pF
L
a
may cause excessive heating and eventual destruction. The current in the output leads and the VElead should not be
85 75 70 80 75 70
80 70 70 75 70 70
2.8 3.5 4.3
0.4 0.4 0.4 0.4
10 8 5.5 7.5 6 4
5505000 5505000
b
s
if V
(Vb)a7V.
E
e
e
T
25§C. V
A
j
e
A
a
e
T
25§C. V
j
ea
a
15V, V
jA
e
and Tjmax. T
5V, V
b
eb
b
e
0V, I
15V, I
SET
j
SET
e
a
T
A
e
10 mA, R
e
100 mA, R
ijAPD.
e
L
e
L
(Min)
mA
(Max)
(Min)
mA
100k, and
100k, and
nA
nA
V
V
dB
dB
V
V
nA
3
Typical Performance Characteristics
Supply Current vs Supply
Supply Current vs I
SET
Voltage
Supply Current vs Temperature
Input Bias Current vs I
Response Time Negative Transition
Response Time Negative Transition
SET
Output Saturation Voltage Voltage Gain vs I
Response Time Positive Transition
Response Time Positive Transition
SET
TL/H/5023– 3
4
Typical Applications
Gated 4-Phase Oscillator
‘‘Voting’’ Comparator
TL/H/5023– 4
fe20 kHz
1
e
f
1.6#R
C
#
t
t
All four phases run when X is low. When X is high, oscillation stops and power drain is zero.
5
e
If V
E
Choice of V
e
low; V
E
0.25V, then V
e
0.50V causes V
E
0.75V will cause V
will be low if 1 of the 3 other outputs are low.
OUT
to be low if 2 of the 3 other outputs are
OUT
to be low if all 3 other outputs are low.
OUT
TL/H/5023– 5
Typical Applications (Continued)
Ordinary Hysteresis
It is a good practice to add a few millivolts of positive feedback to prevent oscillation when the input voltage is near the threshold.
TL/H/5023– 6
Bar-Graph Display
Hysteresis from Emitter
Positive feedback from the emitter can also prevent oscillations when VINis near the threshold.
TL/H/5023– 7
Level-Sensitive Strobe
The positive feedback from pin 16 provides hysteresis.
TL/H/5023– 8
Comparators B, C, and D do not respond until activated by the signal applied to comparator A.
6
TL/H/5023– 9
Typical Applications (Continued)
Slow Op Amp (Inverter)
Slow Op Amp (Unity-Gain Follower)
e
R
Va/20 mA
B
Unlike most comparators, the LP365 can be used as an op amp, if suitable R-C damping networks are used.
TL/H/5023– 10
Chopping Outputs
e
R
Va/20 mA
B
The LP365 can also be used as a high-input-impedance follower-amplifier with the damping components shown.
TL/H/5023– 11
Low Battery Detector
Chopping the outputs by modulating the I mitted via opto-couplers, transformers, etc.
TL/H/5023– 12
current allows data to be trans-
SET
@
I
6Ve45 mA
S
@
I
3.8Ve1 mA
S
e
f
3 kHz
Comparator A detects when the supply voltage drops to 4V and enables comparator B to drive a piezoelectric alarm.
7
TL/H/5023– 13
Simplified Schematic
Current sources are programmed by I
VEis common to all 4 comparators
TL/H/5023– 14
SET
8
Physical Dimensions inches (millimeters)
Plastic Surface-Mount Package (M)
Order Number LP365M
NS Package Number M16A
9
Physical Dimensions inches (millimeters) (Continued)
Molded Dual-In-Line Package (N)
Order Number LP365AN or LP365N
NS Package Number N16A
LP265/LP365 Micropower Programmable Quad Comparator
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user.
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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