TLV3491AID [BB]
1.8V, Nanopower PUSH-PULL OUTPUT COMPARATOR; 1.8V ，纳安级推挽输出比较器
| 型号： | TLV3491AID |
| 厂家： | 
BURR-BROWN CORPORATION |
| 描述： | 1.8V, Nanopower PUSH-PULL OUTPUT COMPARATOR |
| 文件： | 总15页 (文件大小：493K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TLV3491
TLV3492
TLV3494
TLV3491
TLV3492
®
T
L
V
3
4
9
4
TLV3494
SBOS262C – DECEMBER 2002 – REVISED MAY 2004
1.8V, Nanopower,
PUSH-PULL OUTPUT COMPARATOR
DESCRIPTION
FEATURES
The TLV349x family of push-pull output comparators fea-
tures a fast 6µs response time and < 1.2µA (max) nanopower
capability, allowing operation from 1.8V – 5.5V. Input com-
mon-mode range beyond supply rails make the TLV349x an
ideal choice for low-voltage applications.
● VERY LOW SUPPLY CURRENT: 0.8µA (typ)
● INPUT COMMON-MODE RANGE 200mV
BEYOND SUPPLY RAILS
● SUPPLY VOLTAGE: +1.8V to +5.5V
● HIGH SPEED: 6µs
Micro-sized packages provide options for portable and space-
restricted applications. The single (TLV3491) is available
in SOT23-5 and SO-8. The dual (TLV3492) comes in
SOT23-8 and SO-8. The quad (TLV3494) is available in
TSSOP-14 and SO-14.
● PUSH-PULL CMOS OUTPUT STAGE
● SMALL PACKAGES:
SOT23-5 (Single)
SOT23-8 (Dual)
The TLV349x is excellent for power-sensitive, low-voltage
(2-cell) applications.
APPLICATIONS
● PORTABLE MEDICAL EQUIPMENT
● WIRELESS SECURITY SYSTEMS
● REMOTE CONTROL SYSTEMS
● HANDHELD INSTRUMENTS
TLV349x RELATED PRODUCTS
PRODUCT
FEATURES
TLV370x
560nA, 2.5V to 16V, Push-Pull CMOS Output Stage
Comparator
TLV340x
550nA, 2.5V to 16V, Open Drain Output Stage Comparator
● ULTRA-LOW POWER SYSTEMS
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.
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 2002-2004, Texas Instruments Incorporated
www.ti.com
ABSOLUTE MAXIMUM RATINGS(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
Supply Voltage ................................................................................. +5.5V
Signal Input Terminals, Voltage(2) .................. (V–) – 0.5V to (V+) + 0.5V
Current(2) .................................................. ±10mA
This integrated circuit can be damaged by ESD. Texas
Instruments recommends that all integrated circuits be handled
with appropriate precautions. Failure to observe proper han-
dling and installation procedures can cause damage.
Output Short-Circuit(3) .............................................................. Continuous
Operating Temperature ..................................................–40°C to +125°C
Storage Temperature .....................................................–65°C to +150°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
ESD Rating (Human Body Model) .................................................. 3000V
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.
NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may de-
grade device reliability. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those specified is
not implied. (2) Input terminals are diode-clamped to the power-supply rails.
Input signals that can swing more than 0.5V beyond the supply rails should
be current limited to 10mA or less. (3) Short-circuit to ground, one amplifier
per package.
PACKAGE/ORDERING INFORMATION(1)
SPECIFIED
PACKAGE
DESIGNATOR
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER
TRANSPORT
MEDIA, QUANTITY
PRODUCT
PACKAGE-LEAD
TLV3491
SOT23-5
DBV
–40°C to +125°C
VBNI
TLV3491AIDBVT
TLV3491AIDBVR
Tube, 250
"
"
"
"
"
Tape and Reel, 3000
TLV3491
SO-8
D
–40°C to +125°C
TLV3491
TLV3491AID
Tube, 100
"
"
"
"
"
TLV3491AIDR
Tube, 2500
TLV3492
SOT23-8
DCN
–40°C to +125°C
VBO1
TLV3492AIDCNT
TLV3492AIDCNR
Tube, 250
"
"
"
"
"
Tape and Reel, 3000
TLV3492
SO-8
D
–40°C to +125°C
TLV3492
TLV3492AID
Tube, 100
"
"
"
"
"
TLV3492AIDR
Tape and Reel, 2500
TLV3494
TSSOP-14
PW
–40°C to +125°C
TLV3494
TLV3494AIPWT
TLV3494AIPWR
Tape and Reel, 94
"
"
"
"
"
Tape and Reel, 2500
TLV3494
SO-14
D
–40°C to +125°C
TLV3494
TLV3494AID
Tape and Reel, 58
"
"
"
"
"
TLV3494AIDR
Tape and Reel, 2500
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet.
PIN CONFIGURATIONS
Top View
Out
V–
1
2
3
5
4
V+
Out A
–In A
+In A
V+
1
2
3
4
5
6
7
14 Out D
13 –In D
12 +In D
11 V–
Out A
–In A
+In A
V–
1
2
3
4
8
7
6
5
V+
+In
–In
Out B
–In B
+In B
SOT23-5
TLV3494
+In B
–In B
Out B
10 +In C
NC(1)
–In
1
2
3
4
8
7
6
5
NC(1)
V+
SOT23-8
SO-8
9
8
–In C
TLV3491
Out C
+In
Output
NC(1)
TSSOP-14
SO-14
V–
SO-8
NOTES: (1) NC means no internal connection.
TLV3491, 3492, 3494
2
www.ti.com
SBOS262C
ELECTRICAL CHARACTERISTICS: VS = +1.8V to +5.5V
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.
At TA = +25°C, and VS = +1.8V to +5.5V, unless otherwise noted.
TLV3491, TLV3492, TLV3494
PARAMETER
CONDITION
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
vs Temperature
VOS
VCM = 0V, IO = 0V
TA = –40°C to +125°C
±3
±12
350
±15
mV
µV/°C
µV/V
dVOS/dT
PSRR
vs Power Supply
V
S = 1.8V to 5.5V
1000
INPUT BIAS CURRENT
Input Bias Current
Input Offset Current
IB
IOS
VCM = VCC/2
VCM = VCC/2
±1
±1
±10
±10
pA
pA
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
VCM
CMRR
(V–) – 0.2V
(V+) + 0.2V
V
dB
dB
V
V
CM = –0.2V to (V+) – 1.5V
CM = –0.2V to (V+) + 0.2V
60
54
74
62
INPUT CAPACITANCE
Common-Mode
Differential
2
4
pF
pF
SWITCHING CHARACTERISTICS
Propagation Delay Time, Low-to-High
f = 10kHz, VSTEP = 1V
Input Overdrive = 10mV
Input Overdrive = 100mV
Input Overdrive = 10mV
Input Overdrive = 100mV
CL = 10pF
t(PLH)
t(PHL)
12
6
13.5
6.5
100
100
µs
µs
µs
µs
ns
ns
Propagation Delay Time, High-to-Low
Rise Time
Fall Time
tR
tF
CL = 10pF
OUTPUT
VS = 5V
Voltage Output High from Rail
Voltage Output Low from Rail
Short-Circuit Current
VOH
VOL
ISC
IOUT = 5mA
IOUT = 5mA
90
160
200
200
mV
mV
See Typical Characteristics
POWER SUPPLY
Specified Voltage
Operating Voltage Range
Quiescent Current(1)
VS
IQ
1.8
1.8
5.5
5.5
1.2
V
V
µA
VO = 5V, VO = High
0.85
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
–40
–40
–65
+125
+125
+150
°C
°C
°C
Thermal Resistance, θJA
SOT23-5, SOT23-8
SO-8
200
150
100
°C/W
°C/W
°C/W
SO-14, TSSOP-14
NOTE: (1) IQ per channel.
TLV3491, 3492, 3494
SBOS262C
3
www.ti.com
TYPICAL CHARACTERISTICS
At TA = +25°C, VS = +1.8V to +5.5V, and Input Overdrive = 100mV, unless otherwise noted.
QUIESCENT CURRENT
vs OUTPUT SWITCHING FREQUENCY
QUIESCENT CURRENT vs TEMPERATURE
12
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
VDD = 3V
VS = 5V
10
8
VDD = 5V
VDD = 1.8V
6
4
VS = 3V
2
VS = 1.8V
10k
0
1
10
100
1k
100k
125
12
–50
1.5
0
–25
0
25
50
75
100
125
5.5
12
Output Transition Frequency (Hz)
Temperature (°C)
SHORT-CIRCUIT CURRENT vs SUPPLY VOLTAGE
INPUT BIAS CURRENT vs TEMPERATURE
140
120
100
80
45
40
35
30
25
20
15
10
5
Sink
60
Source
40
20
0
0
–5
2
2.5
3
3.5
4
4.5
5
–50
–25
0
25
50
75
100
Supply Voltage (V)
Temperature (°C)
OUTPUT LOW vs OUTPUT CURRENT
OUTPUT HIGH vs OUTPUT CURRENT
VDD = 3V
0.25
0.2
0.15
0.1
0.05
0
0.25
0.2
0.15
0.1
0.05
0
VDD = 1.8V
VDD = 1.8V
VDD = 3V
V
DD = 5V
VDD = 5V
2
4
6
8
10
0
2
4
6
8
10
Output Current (mA)
Output Current (mA)
TLV3491, 3492, 3494
4
www.ti.com
SBOS262C
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VS = +1.8V to +5.5V, and Input Overdrive = 100mV, unless otherwise noted.
PROPAGATION DELAY (tPHL) vs CAPACITIVE LOAD
PROPAGATION DELAY (tPLH) vs CAPACITIVE LOAD
80
80
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
VDD = 3V
VDD = 5V
VDD = 5V
VDD = 3V
VDD = 1.8V
VDD = 1.8V
0.01
0.1
1
10
100
1k
0.01
0.1
1
10
100
1k
Capacitive Load (nF)
Capacitive Load (nF)
PROPAGATION DELAY (tPHL) vs INPUT OVERDRIVE
PROPAGATION DELAY (tPLH) vs INPUT OVERDRIVE
20
18
16
14
12
10
8
20
18
16
14
12
10
8
VDD = 5V
VDD = 1.8V
VDD = 3V
VDD = 3V
VDD = 1.8V
6
6
VDD = 5V
4
4
0
10
20
30
40
50 60
70
80
90 100
0
10
20
30
40
50 60
70
80
90 100
Input Overdrive (mV)
Input Overdrive (mV)
PROPAGATION DELAY (tPHL) vs TEMPERATURE
PROPAGATION DELAY (tPLH) vs TEMPERATURE
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
VDD = 1.8V
VDD = 3V
VDD = 1.8V
VDD = 3V
VDD = 5V
VDD = 5V
–50
–25
0
25
50
75
100
125
–50
–25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
TLV3491, 3492, 3494
SBOS262C
5
www.ti.com
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VS = +1.8V to +5.5V, and Input Overdrive = 100mV, unless otherwise noted.
PROPAGATION DELAY (tPLH
)
PROPAGATION DELAY (tPHL)
VDD = ±2.5V
VDD = ±2.5V
VIN+
VIN–
VIN–
VIN+
VOUT
VOUT
2µs/div
2µs/div
PROPAGATION DELAY (tPHL
)
PROPAGATION DELAY (tPLH
)
VIN+
VDD = ±0.9V
VDD = ±0.9V
VIN–
VIN–
VIN+
VOUT
VOUT
2µs/div
2µs/div
TLV3491, 3492, 3494
6
www.ti.com
SBOS262C
SETTING REFERENCE VOLTAGE
APPLICATIONS INFORMATION
It is important to use a stable reference when setting the
transition point for the TLV349. The REF1004 provides a
1.25V reference voltage with low drift and only 8µA of
quiescent current.
The TLV349x family of comparators features rail-to-rail input
and output on supply voltages as low as 1.8V. The push-pull
output stage is optimal for reduced power budget applica-
tions and features no shoot-through current. Low supply
voltages, common-mode input range beyond supply rails,
and a typical supply current of 0.8µA make the TLV349x
family an excellent candidate for battery-powered applica-
tions with single-cell operation.
EXTERNAL HYSTERESIS
Comparator inputs have no noise immunity within the range
of specified offset voltage (±15mV). For noisy input signals,
the comparator output may display multiple switching as
input signals move through the switching threshold. The
typical comparator threshold of the TLV349x is ±15mV. To
prevent multiple switching within the comparator threshold of
the TLV349x, external hysteresis may be added by connect-
ing a small amount of feedback to the positive input. Figure
2 shows a typical topology used to introduce hysteresis,
described by the equation:
BOARD LAYOUT
Figure 1 shows the typical connections for the TLV349x. To
minimize supply noise, power supplies should be capaci-
tively decoupled by a 0.01µF ceramic capacitor in parallel
with a 10µF electrolytic capacitor. Comparators are very
sensitive to input noise. Proper grounding (use of ground
plane) and guarding of high-impedance nodes will help
maintain specified performance of the TLV349x family.
V+ × R1
VHYST
=
R1 + R2
VHYST will set the value of the transition voltage required to
switch the comparator output by increasing the threshold
region, thereby reducing sensitivity to noise.
V+
0.01µF
10µF
VIN
TLV349x
VOUT
V+
VREF
VHYST = 0.38V
5.0V
VIN
TLV349x
VOUT
R2
560kΩ
FIGURE 1. Basic Connections of the TLV349x.
R1
39kΩ
VREF
FIGURE 2. Adding Hysteresis to the TLV349x.
TLV3491, 3492, 3494
SBOS262C
7
www.ti.com
a simple resistor divider. These resistor values should be
relatively high to reduce the current consumption of the
circuit. The positive input is an RC circuit that provides a
power-up delay. When power is applied, the output of the
comparator is low, holding the processor in the reset condi-
tion. Only after allowing time for the supply voltage to
stabilize does the positive input of the comparator become
higher than the negative input, resulting in a high output
state, and releasing the processor for operation. The stabili-
zation time required for the supply voltage is adjustable by
the selection of the RC component values. Use of a lower-
valued resistor in this portion of the circuit will not increase
current consumption because no current flows through the
RC circuit after the supply has stabilized. The reset delay
time needed depends on the power-up characteristics of the
system power supply. R1 and C1 are selected to allow
enough time for the power supply to stabilize. D1 provides
rapid reset if power is lost. In this example, the R1 • C1 time
constant is 10mS.
APPLICATIONS
RELAXATION OSCILLATOR
The TLV349x can be configured as a relaxation oscillator to
provide a simple and inexpensive clock output (see Figure
3.) The capacitor is charged at a rate of 0.69RC. It also
discharges at a rate of 0.69RC. Therefore, the period is
1.38RC. R1 may be a different value than R2.
VC
2/3 (V+)
1/3 (V+)
t
T1 T2
V+
V+
C
R1
1MΩ
1000pF
VOUT
V+
t
R2
1MΩ
R2
1MΩ
F = 724Hz
V+
R1
R2
1MΩ
1MΩ
MSP430
C1
10nF
RESET
TLV349x
R2
FIGURE 3. TLV349x Configured as a Relaxation Oscillator.
2MΩ
POWER-ON RESET
R3
2MΩ
The reset circuit shown in Figure 4 provides a time delayed
release of reset to the MSP430 microcontroller. Operation of
the circuit is based on a stabilization time constant of the
supply voltage, rather than on a predetermined voltage
value. The negative input is a reference voltage created by
FIGURE 4. The TLV349x Configured as a Reset Circuit for
the MSP430.
TLV3491, 3492, 3494
8
www.ti.com
SBOS262C
PACKAGE OPTION ADDENDUM
www.ti.com
9-Dec-2004
PACKAGING INFORMATION
Orderable Device
Status (1)
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
Drawing
TLV3491AID
TLV3491AIDBVR
TLV3491AIDBVT
TLV3491AIDR
TLV3492AID
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
SOIC
D
8
5
100
3000
250
None
None
None
None
None
None
None
None
None
None
None
None
CU SNPB
Level-3-235C-168 HR
SOT-23
SOT-23
SOIC
DBV
DBV
D
CU NIPDAU Level-3-250C-168 HR
CU NIPDAU Level-3-250C-168 HR
5
8
2500
100
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
Level-3-235C-168 HR
Level-3-235C-168 HR
Level-3-235C-168 HR
Level-3-235C-168 HR
Level-3-235C-168 HR
Level-3-235C-168 HR
Level-3-235C-168 HR
Level-3-235C-168 HR
Level-3-235C-168 HR
SOIC
D
8
TLV3492AIDCNR
TLV3492AIDCNT
TLV3492AIDR
TLV3494AID
SOT23
SOT23
SOIC
DCN
DCN
D
8
3000
250
8
8
2500
58
SOIC
D
14
14
14
14
TLV3494AIDR
TLV3494AIPWR
TLV3494AIPWT
SOIC
D
2500
2500
250
TSSOP
TSSOP
PW
PW
(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)
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder
temperature.
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 continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
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
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
M
0,10
0,65
14
8
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
0,25
1
7
0°–8°
A
0,75
0,50
Seating Plane
0,10
0,15
0,05
1,20 MAX
PINS **
8
14
16
20
24
28
DIM
3,10
2,90
5,10
4,90
5,10
4,90
6,60
6,40
7,90
9,80
9,60
A MAX
A MIN
7,70
4040064/F 01/97
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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相关型号：
TLV3491AIDRG4
COMPARATOR, 15000uV OFFSET-MAX, 12000ns RESPONSE TIME, PDSO8, GREEN, PLASTIC, MS-012AA, SOIC-8
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