National Semiconductor LMV7271, LMV7275, LMV7272 Technical data
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LMV7271/LMV7275/LMV7272
Single & Dual, 1.8V Low Power Comparators with
Rail-to-Rail Input
LMV7271/LMV7275/LMV7272 Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input
September 2003
General Description
The LMV727X are rail-to-rail input low power comparators,
which are characterized at supply voltage 1.8V, 2.7V and
5.0V. They consume only 9uA supply current per channel
while achieving a 800ns propagation delay.
The LMV7271/LMV7275 (single) are available in SC70 and
SOT23 packages. The LMV7272 (dual) is available in micro
SMD package. With these tiny packages, the PC board area
can be significantly reduced. They are ideal for low voltage,
low power and space critical designs.
The LMV7271/LMV7272 both feature a push-pull output
stage which allows operation with minimum power consumption when driving a load. The LMV7275 features an open
drain output stage that allows for wired-OR configurations.
The open drain output also offers the advantage of allowing
the output to be pulled to any voltage up to 5V, regardless of
the supply voltage of the LMV7275.
The LMV727X are built with National Semiconductor’s advance submicron silicon-gate BiCMOS process. They all
have bipolar inputs for improved noise performance and
CMOS outputs for rail-to-rail output swing.
Typical Circuit
Features
(VS= 1.8V, TA= 25˚C, Typical values unless specified).
n Single or Dual Supplies
n Ultra low supply current 9µA per channel
n Low input bias current 10nA
n Low input offset current 200pA
n Low guaranteed V
n Propagation delay 880ns (20mV overdrive)
n Input common mode voltage range 0.1V beyond rails
n LMV7272 is available in micro SMD package
OS
4mV
Applications
n Mobile communications
n Laptops and PDA’s
n Battery powered electronics
n General purpose low voltage applications
Part Number Single/Dual Package Output
LMV7271 Single SC70,
SOT23
LMV7272 Dual micro SMD Push/Pull
LMV7275 Single SC70,
SOT23
Push/Pull
Open Drain
20064024
FIGURE 1. Threshold Detector
© 2003 National Semiconductor Corporation DS200640 www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
Storage Temperature Range −65˚C to +150˚C
Junction Temperature (Note 4) +150˚C
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Operating Ratings (Note 1)
ESD Tolerance 2KV (Note 2)
Differential
V
IN
Supply Voltage (V
+-V−
) 5.5V
Voltage at Input/Output pins V
LMV7271/LMV7275/ LMV7272
Soldering Information
±
+
+0.1V, V−−0.1V
Infrared or Convection (20 sec.) 235˚C
Wave Soldering (10 sec.) 260˚C
200V (Note 6)
Supply Voltage
Operating Temperature Range
(Note 3) −40˚C to +85˚C
Package Thermal Resistance (Note 3)
SOT23-5 325˚C/W
SC-70 265˚C/W
8-Bump Thin micro SMD 220˚C/W
1.8V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= 1.8V, V−= 0V. Boldface limits apply at the temperature
extremes.
Symbol Parameter Condition Min
(Note 5)
V
OS
TC V
I
B
I
OS
I
S
Input Offset Voltage 0.3 4
Input Offset Temperature Drift VCM= 0.9V (Note 7) 20 uV/˚C
OS
Input Bias Current 10 nA
Input Offset Current 200 pA
Supply Current LMV7271/LMV7275 9 12
LMV7272 18 25
I
SC
Output Short Circuit Current Sourcing, VO= 0.9V
(LMV7271/LMV7272 only)
Sinking, V
V
OH
V
OL
V
CM
Output Voltage High
(LMV7271/LMV7272 only)
IO= 0.5mA 1.7 1.74
I
= 1.5mA 1.47 1.63
O
Output Voltage Low IO= −0.5mA 52 100
I
= −1.5mA 166 220
O
Input Common Mode Voltage
CMRR>45 dB 1.9 V
= 0.9V 4 6
O
Range
<
CMRR Common Mode Rejection Ratio 0
PSRR Power Supply Rejection Ratio V
I
LEAKAGE
Output Leakage Current VO= 1.8V (LMV7275 only) 2 pA
+
<
V
1.8V 46 78 dB
CM
= 1.8V to 5V 55 80 dB
3.5 6
−0.1 V
Typ
(Note 4)
Max
(Note 5)
6
14
28
Units
mV
µA
µA
mA
V
mV
1.8V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= 1.8V, V−= 0V, VCM= 0.5V, VO=V+/2 and R
−
. Boldface limits apply at the temperature extremes.
V
Symbol Parameter Condition Min
t
PHL
Propagation Delay
(High to Low)
Input Overdrive = 20mV
Load = 50pF//5kΩ
Input Overdrive = 50mV
Load = 50pF//5kΩ
t
PLH
Propagation Delay
(Low to High)
Input Overdrive = 20mV
Load = 50pF//5kΩ
Input Overdrive = 50mV
Load = 50pF//5kΩ
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(Note 6)
Typ
(Note 5)
880 ns
570 ns
1100 ns
800 ns
Max
(Note 6)
L
>
1MΩ to
Units
2.7V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= 2.7V, V−= 0V. Boldface limits apply at the temperature
extremes.
Symbol Parameter Conditions Min
(Note 6)
V
OS
TC V
I
B
I
OS
I
S
Input Offset Voltage 0.3 4
Input Offset Temperature Drift VCM= 1.35V (Note 7) 20 µV/˚C
OS
Input Bias Current 10 nA
Input offset Current 200 pA
Supply Current LMV7271/LMV7275 9 13
LMV7272 18 25
I
SC
Output Short Circuit Current Sourcing, VO= 1.35V
(LMV7271/LMV7272 only)
= 1.35V 12 15
O
<
V
2.7V 46 78 dB
CM
V
OH
Output Voltage High
(LMV7271/LMV7272 only)
V
OL
V
CM
Output Voltage Low IO= −0.5mA 50 70
Input Common Voltage Range CMRR>45dB 2.8 V
CMRR Common Mode Rejection Ratio 0
PSRR Power Supply Rejection Ratio V
I
LEAKAGE
Output Leakage Current VO= 2.7V (LMV7275 only) 2 pA
Sinking, V
IO= 0.5mA 2.63 2.66
I
= 2.0mA 2.48 2.55
O
I
= −2mA 155 220
O
<
+
= 1.8V to 5V 55 80 dB
12 15
−0.1 V
Typ
(Note 5)
Max
(Note 6)
6
15
28
LMV7271/LMV7275/ LMV7272
Units
mV
µA
µA
mA
V
mV
2.7V AC Electrical Characteristics
Max
L
>
1MΩ to
Units
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= 2.7V, V−= 0V, VCM= 0.5V, VO=V+/2 and R
−
. Boldface limits apply at the temperature extremes.
V
Symbol Parameter Condition Min
(Note 6)
t
PHL
Propagation Delay
(High to Low)
Input Overdrive = 20mV
Load = 50pF//5kΩ
Input Overdrive = 50mV
Typ
(Note 5)
(Note 6)
1200 ns
810 ns
Load = 50pF//5kΩ
t
PLH
Propagation Delay
(Low to High)
Input Overdrive = 20mV
Load = 50pF//5kΩ
Input Overdrive = 50mV
1300 ns
860 ns
Load = 50pF//5kΩ
5.0V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= 5V, V−= 0V. Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Min
(Note 6)
V
OS
TC V
I
B
I
OS
Input Offset Voltage 0.3 4
Input Offset Temperature Drift VCM= 2.5V (Note 7) 20 µV/˚C
OS
Input Bias Current 10 nA
Input Offset Current 200 pA
Typ
(Note 5)
Max
(Note 6)
6
Units
mV
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5.0V Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= 5V, V−= 0V. Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Min
(Note 6)
I
S
Supply Current LMV7271/LMV7275 10 14
Typ
(Note 5)
Max
(Note 6)
16
LMV7272 20 27
30
I
SC
LMV7271/LMV7275/ LMV7272
Output Short Circuit Current Sourcing, VO= 2.5V
(LMV7271/LMV7272 only)
28 34
Sinking, VO= 2.5V 28 34
V
OH
V
OL
V
CM
Output Voltage High
(LMV7271/LMV7272 only)
IO= 0.5mA 4.93 4.96
I
= 4.0mA 4.70 4.77
O
Output Voltage Low IO= −0.5mA 27 70
I
= −4.0mA 225 300
O
Input Common Voltage Range CMRR>45dB 5.1
−0.1
<
CMRR Common Mode Rejection Ratio 0
PRSS Power Supply Rejection Ratio V
I
LEAKAGE
Output Leakage Current VO= 5V (LMV7275 only) 2 pA
+
<
V
5.0V 46 78 dB
CM
= 1.8V to 5V 55 80 dB
5.0V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= 5.0V, V−= 0V, VCM= 0.5V, VO=V+/2 and R
−
. Boldface limits apply at the temperature extremes.
V
Symbol Parameter Condition Min
(Note 6)
t
PHL
Propagation Delay
(High to Low)
Input Overdrive = 20mV
Load = 50pF//5kΩ
Input Overdrive = 50mV
Load = 50pF//5kΩ
t
PLH
Propagation Delay
(Low to High)
Input Overdrive = 20mV
Load = 50pF//5kΩ
Input Overdrive = 50mV
Load = 50pF//5kΩ
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5kΩ in series with 100pF.
Note 3: The maximum power dissipation is a function of T
P
=(T
D
J(MAX)-TA
Note 4: Typical values represent the most likely parametric norm.
Note 5: All limits are guaranteed by testing or statistical analysis.
Note 6: Machine Model, 0Ω in series with 200pF.
Note 7: Offset Voltage average drift determined by dividing the change in V
Note 8: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of
the device such that T
Absolute Maximum Ratings indicate junction temperature limits beyond which the device may be permanently degraded, either mechanically or electrically.
)/θJA. All numbers apply for packages soldered directly into a PC board.
. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self heating where T
J=TA
, θJA, and TA. The maximum allowable power dissipation at any ambient temperature is
J(MAX)
at temperature extremes into the total temperature change.
OS
Typ
(Note 5)
Max
(Note 6)
2100 ns
1380 ns
1800 ns
1100 ns
L
>
1MΩ to
Units
µA
µA
mA
V
mV
V
Units
>
J
TA.
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Connection Diagrams
5-Pin SOT23/SC70 (LMV7271/LMV7275) 8-Bump micro SMD (LMV7272)
LMV7271/LMV7275/ LMV7272
Top View
20064023
20064041
Top View
(bump side down)
Ordering Information
Package Part Number Package Marking Transport Media NSC Drawing
5-Pin SOT23 LMV7271MF C25A 1k Units Tape and Reel MF05A
LMV7271MFX 3k Units Tape and Reel
LMV7275MF C26A 1k Units Tape and Reel
LMV7275MFX 3k Units Tape and Reel
5-Pin SC70 LMV7271MG C34 1k Units Tape and Reel MAA05A
LMV7271MGX 3k Units Tape and Reel
LMV7275MG C35 1k Units Tape and Reel
LMV7275MGX 3k Units Tape and Reel
8-Bump
micro SMD
LMV7272TL I 01 250 Units Tape and Reel TLA08AAA
LMV7272TLX 3k Units Tape and Reel
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