LM2901 MWA [TI]
低功耗低失调电压四路比较器 | YS | 0 | -40 to 85;
| 型号： | LM2901 MWA |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 低功耗低失调电压四路比较器 | YS | 0 | -40 to 85 比较器 |
| 文件： | 总23页 (文件大小：770K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
OBSOLETE
LM2901EP
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SNOSAF6B –JANUARY 2005–REVISED APRIL 2013
LM2901EP Low Power Low Offset Voltage Quad Comparators
Check for Samples: LM2901EP
1
FEATURES
DESCRIPTION
The LM2901EP consists of four independent
2
•
•
•
Wide Supply Voltage Range
precision voltage comparators with an offset voltage
specification as low as 2 mV max for all four
comparators. These were designed specifically to
operate from a single power supply over a wide range
of voltages. Operation from split power supplies is
also possible and the low power supply current drain
is independent of the magnitude of the power supply
LM2901: 2 to 36 VDCor ±1 to ±18 VDC
Very Low Supply Current Drain (0.8 mA) —
Independent of Supply Voltage
•
•
•
•
Low Input Biasing Current: 25 nA
Low Input Offset Current: ±5 nA
Offset Voltage: ±3 mV
voltage. This comparator also has
a
unique
characteristic in that the input common-mode voltage
range includes ground, even though operated from a
single power supply voltage.
Input Common-Mode Voltage Range Includes
GND
•
Differential Input Voltage Range Equal to 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; multivibrators and high voltage digital logic
gates. The LM2901EP was designed to directly
interface with TTL and CMOS. When operated from
both plus and minus power supplies, it will directly
interface with MOS logic— where the low power drain
of the LM2901EP is a distinct advantage over
standard comparators.
•
•
Low output saturation voltage: 250 mV at 4 mA
Output Voltage Compatible with TTL, DTL,
ECL, MOS and CMOS Logic Systems
ADVANTAGES
•
•
•
•
•
•
High Precision Comparator
Reduced VOS Drift Over Temperature
Eliminates Need for Dual Supplies
Allows Sensing Near GND
ENHANCED PLASTIC
•
Extended Temperature Performance of −40°C to
+85°C
Compatible with all Forms of Logic
Power Drain Suitable for Battery Operation
•
•
•
•
•
Baseline Control - Single Fab & Assembly Site
Process Change Notification (PCN)
Qualification & Reliability Data
Solder (PbSn) Lead Finish is standard
Enhanced Diminishing Manufacturing Sources
(DMS) Support
APPLICATIONS
•
•
Selected Military Applications
Selected Avionics Applications
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2013, Texas Instruments Incorporated
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One-Shot Multivibrator with Input Lock Out
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
2
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ABSOLUTE MAXIMUM RATINGS(1)(2)
Supply Voltage, V+
Differential Input Voltage(3)
36 VDC or ±18 VDC
36 VDC
Input Voltage
Input Current (VIN<−0.3 VDC),(4)
−0.3 VDC to +36 VDC
50 mA
Power Dissipation(5)
Molded PDIP
Small Outline Package (SOIC)
1050 mW
760 mW
Output Short-Circuit to GND,(6)
Storage Temperature Range
Continuous
−65°C to +150°C
260°C
Lead Temperature (Soldering, 10 seconds)
Operating Temperature Range
Soldering Information
LM2901
−40°C to +85°C
Dual-In-Line Package
Small Outline Package
Soldering (10 seconds)
260°C
215°C
220°C
600V
Vapor Phase (60 seconds)
Infrared (15 seconds)
ESD rating (1.5 kΩ in series with 100 pF)
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
(3) Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode
range, the comparator will provide a proper output state. The low input voltage state must not be less than −0.3 VDC (or 0.3 VDCbelow
the magnitude of the negative power supply, if used) (at 25°C).
(4) This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of
the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is
also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the comparators to go
to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive
and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than −0.3 VDC (at
25°)C.
(5) For operating at high temperatures, the LM2901EP must be derated based on a 125°C maximum junction temperature and a thermal
resistance of 95°C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The low bias
dissipation and the “ON-OFF” characteristic of the outputs keeps the chip dissipation very small (PD≤100 mW), provided the output
transistors are allowed to saturate.
(6) Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground,
the maximum output current is approximately 20 mA independent of the magnitude of V+.
ELECTRICAL CHARACTERISTICS(1)
(V+ = 5 VDC, TA = 25°C, unless otherwise stated)
Parameter
Conditions
LM2901
Typ
Units
Min
Max
7.0
Input Offset Voltage
See(2)
2.0
mVDC
nADC
Input Bias Current
IIN(+) or IIN(−) with Output in
Linear Range,(3), VCM=0V
25
250
Input Offset Current
I
IN(+)−IIN(−), VCM = 0V
5
50
V+−1.5
nADC
VDC
(4)
Input Common-Mode Voltage Range
Supply Current
V+ = 30 VDC
0
RL = ∞ on all Comparators,
RL = ∞, V+ = 36V,
0.8
1.0
2.0
2.5
mADC
mADC
25
Voltage Gain
R
L ≥ 15 kΩ, V+ = 15 VDC
VO = 1 VDC to 11 VDC
100
V/mV
(1) "Testing and other quality control techniques are used to the extent deemed necessary to ensure product performance over the
specified temperature range. Product may not necessarily be tested across the full temperature range and all parameters may not
necessarily be tested. In the absence of specific PARAMETRIC testing, product performance is assured by characterization and/or
design."
(2) At output switch point, VO≃1.4 VDC, RS = 0Ω with V+ from 5 VDC to 30 VDC; and over the full input common-mode range (0 VDC to V+
−1.5 VDC), at 25°C.
(3) The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the
state of the output so no loading change exists on the reference or input lines.
(4) The input common-mode voltage or either input signal voltage 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 at 25°C, but either or both inputs can go to +30 VDC without damage independent of the
magnitude of V+.
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ELECTRICAL CHARACTERISTICS(1) (continued)
(V+ = 5 VDC, TA = 25°C, unless otherwise stated)
Parameter
Conditions
LM2901
Typ
Units
Min
Max
Large Signal
VIN = TTL Logic Swing, VREF
=
300
ns
Response Time
1.4 VDC, VRL = 5 VDC,
RL = 5.1 kΩ,
Response Time
VRL = 5 VDC, RL = 5.1 kΩ,(5)
1.3
16
μs
Output Sink Current
VIN(−)= 1 VDC, VIN(+) = 0,
6.0
mADC
V
O ≤ 1.5 VDC
VIN(−) = 1 VDC, VIN(+) = 0,
SINK ≤ 4 mA
Saturation Voltage
250
0.1
400
mVDC
nADC
I
Output Leakage
Current
VIN(+) = 1 VDC,VIN(−) = 0,
VO = 5 VDC
(5) The response time specified is a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be obtained, see
TYPICAL PERFORMANCE CHARACTERISTICS section.
ELECTRICAL CHARACTERISTICS(1)
(2)
(V+ = 5.0 VDC
)
Parameter
Conditions
LM2901
Typ
9
Units
Min
Max
15
Input Offset Voltage
Input Offset Current
Input Bias Current
See(3)
IN(+)−IIN(−), VCM = 0V
mVDC
nADC
nADC
I
50
200
500
IIN(+) or IIN(−) with Output in
Linear Range, VCM = 0V(4)
200
(5)
Input Common-Mode
Voltage Range
V+ = 30 VDC
0
V+−2.0
700
1.0
VDC
mVDC
μADC
VDC
Saturation Voltage
VIN(−) = 1 VDC, VIN(+) = 0,
400
ISINK ≤ 4 mA
Output Leakage Current
Differential Input Voltage
VIN(+) = 1 VDC, VIN(−) = 0,
VO = 30 VDC
Keep all VIN's ≥ 0 VDC (or V−, if used),(6)
36
(1) "Testing and other quality control techniques are used to the extent deemed necessary to ensure product performance over the
specified temperature range. Product may not necessarily be tested across the full temperature range and all parameters may not
necessarily be tested. In the absence of specific PARAMETRIC testing, product performance is assured by characterization and/or
design."
(2) These specifications are limited to −40°C ≤ TA ≤ +85°C, for the LM2901EP.
(3) At output switch point, VO≃1.4 VDC, RS = 0Ω with V+ from 5 VDC to 30 VDC; and over the full input common-mode range (0 VDC to V+
−1.5 VDC), at 25°C.
(4) The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the
state of the output so no loading change exists on the reference or input lines.
(5) The input common-mode voltage or either input signal voltage 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 at 25°C, but either or both inputs can go to +30 VDC without damage independent of the
magnitude of V+.
(6) Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode
range, the comparator will provide a proper output state. The low input voltage state must not be less than −0.3 VDC (or 0.3 VDCbelow
the magnitude of the negative power supply, if used) (at 25°C).
4
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TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current
Input Current
Figure 1.
Figure 2.
Response Time for Various Input Overdrives
—Negative Transition
Output Saturation Voltage
Figure 3.
Figure 4.
Response Time for Various Input Overdrives
—Positive Transition
Figure 5.
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APPLICATION HINTS
The LM2901EP is a high gain, wide bandwidth device which, like most comparators, can easily oscillate if the
output lead is inadvertently allowed to capacitively couple to the inputs via stray capacitance. This shows up only
during the output voltage transition intervals as the comparator changes states. Power supply bypassing is not
required to solve this problem. Standard PC board layout is helpful as it reduces stray input-output coupling.
Reducing this input resistors to < 10 kΩ reduces the feedback signal levels and finally, adding even a small
amount (1 to 10 mV) of positive feedback (hysteresis) causes such a rapid transition that oscillations due to stray
feedback are not possible. Simply socketing the IC and attaching resistors to the pins will cause input-output
oscillations during the small transition intervals unless hysteresis is used. If the input signal is a pulse waveform,
with relatively fast rise and fall times, hysteresis is not required.
All pins of any unused comparators should be tied to the negative supply.
The bias network of the LM2901EP series establishes a drain current which is independent of the magnitude of
the power supply voltage over the range of from 2 VDC to 30 VDC
.
It is usually unnecessary to use a bypass capacitor across the power supply line.
The differential input voltage may be larger than V+ without damaging the device. Protection should be provided
to prevent the input voltages from going negative more than −0.3 VDC (at 25°C). An input clamp diode can be
used as shown in the Typical Applications section.
The output of the LM2901EP is the uncommitted collector of a grounded-emitter NPN output transistor. Many
collectors can be tied together to provide an output OR'ing function. An output pull-up resistor can be connected
to any available power supply voltage within the permitted supply voltage range and there is no restriction on this
voltage due to the magnitude of the voltage which is applied to the V+ terminal of the LM2901EP package. The
output can also be used as a simple SPST switch to ground (when a pull-up resistor is not used). The amount of
current which the output device can sink is limited by the drive available (which is independent of V+) and the β
of this device. When the maximum current limit is reached (approximately 16 mA), the output transistor will come
out of saturation and the output voltage will rise very rapidly. The output saturation voltage is limited by the
approximately 60Ω RSAT of the output transistor. The low offset voltage of the output transistor (1 mV) allows the
output to clamp essentially to ground level for small load currents.
Typical Applications
(V+ = 5.0 VDC
)
The LM139 within this data sheet's graphics is referenced because of it's a similarity to the LM2901, however is
not offered in this data sheet.
Figure 6. Basic Comparator
Figure 7. Driving CMOS
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Figure 8. Driving TTL
Figure 9. AND Gate
Figure 10. OR Gate
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Typical Applications
(V+= 15 VDC
)
The LM139 within this data sheet's graphics is referenced because of it's a similarity to the LM2901, however is
not offered in this data sheet.
Figure 11. One-Shot Multivibrator
Figure 12. Bi-Stable Multivibrator
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Figure 13. One-Shot Multivibrator with Input Lock Out
Figure 14. Pulse Generator
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Figure 15. Large Fan-In AND Gate
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Figure 16. ORing the Outputs
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Figure 17. Time Delay Generator
Figure 18. Non-Inverting Comparator with Hysteresis
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Figure 19. Inverting Comparator with Hysteresis
Figure 20. Squarewave Oscillator
Figure 21. Basic Comparator
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Figure 22. Limit Comparator
Figure 23. Comparing Input Voltages of Opposite Polarity
* Or open-collector logic gate without pull-up resistor
Figure 24. Output Strobing
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Figure 25. Crystal Controlled Oscillator
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V+ = +30 VDC
250 mVDC ≤ VC ≤ +50 VDC
700 Hz ≤ fO ≤ 100 kHz
Figure 26. Two-Decade High-Frequency VCO
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Figure 27. Transducer Amplifier
Figure 28. Zero Crossing Detector (Single Power Supply)
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Split-Supply Applications
(V+ = +15 VDC and V− = −15 VDC
)
Figure 29. MOS Clock Driver
Figure 30. Zero Crossing Detector
18
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Figure 31. Comparator With a Negative Reference
Schematic Diagram
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Connection Diagrams
Dual-In-Line Package - SOIC/PDIP
See Package Number D and NFF
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REVISION HISTORY
Changes from Revision A (April 2013) to Revision B
Page
•
Changed layout of National Data Sheet to TI format .......................................................................................................... 20
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PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status Package Type Package Pins Package
Eco Plan
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
Samples
Drawing
Qty
(1)
(2)
(3)
(4/5)
(6)
LM2901 MWA
ACTIVE WAFERSALE
YS
0
1
RoHS & Green
Call TI
Level-1-NA-UNLIM
-40 to 85
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
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In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
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