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National Semiconductor Electronic Components Datasheet

LMV7271 Datasheet

Single & Dual / 1.8V Low Power Comparators with Rail-to-Rail Input

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September 2003
LMV7271/LMV7275/LMV7272
Single & Dual, 1.8V Low Power Comparators with
Rail-to-Rail Input
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 consump-
tion 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 ad-
vance submicron silicon-gate BiCMOS process. They all
have bipolar inputs for improved noise performance and
CMOS outputs for rail-to-rail output swing.
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 VOS
n Propagation delay
4mV
880ns (20mV overdrive)
n Input common mode voltage range 0.1V beyond rails
n LMV7272 is available in micro SMD package
Applications
n Mobile communications
n Laptops and PDA’s
n Battery powered electronics
n General purpose low voltage applications
Typical Circuit
Part Number Single/Dual Package Output
LMV7271
Single
SC70,
SOT23
Push/Pull
LMV7272
Dual micro SMD Push/Pull
LMV7275
Single
SC70, Open Drain
SOT23
20064024
FIGURE 1. Threshold Detector
© 2003 National Semiconductor Corporation DS200640
www.national.com


National Semiconductor Electronic Components Datasheet

LMV7271 Datasheet

Single & Dual / 1.8V Low Power Comparators with Rail-to-Rail Input

No Preview Available !

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance
VIN Differential
Supply Voltage (V+ - V)
Voltage at Input/Output pins
Soldering Information
Infrared or Convection (20 sec.)
Wave Soldering (10 sec.)
2KV (Note 2)
200V (Note 6)
±Supply Voltage
5.5V
V+ +0.1V, V−0.1V
235˚C
260˚C
Storage Temperature Range
Junction Temperature (Note 4)
Operating Ratings (Note 1)
Operating Temperature Range
(Note 3)
Package Thermal Resistance (Note 3)
SOT23-5
SC-70
8-Bump Thin micro SMD
−65˚C to +150˚C
+150˚C
−40˚C to +85˚C
325˚C/W
265˚C/W
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 Typ Max
(Note 5) (Note 4) (Note 5)
Units
VOS Input Offset Voltage
0.3 4 mV
6
TC VOS
IB
IOS
IS
Input Offset Temperature Drift
Input Bias Current
Input Offset Current
Supply Current
VCM = 0.9V (Note 7)
LMV7271/LMV7275
20 uV/˚C
10 nA
200 pA
9 12
µA
14
LMV7272
18 25 µA
28
ISC
VOH
VOL
VCM
CMRR
PSRR
Output Short Circuit Current
Output Voltage High
(LMV7271/LMV7272 only)
Output Voltage Low
Input Common Mode Voltage
Range
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Sourcing, VO = 0.9V
(LMV7271/LMV7272 only)
Sinking, VO = 0.9V
IO = 0.5mA
IO = 1.5mA
IO = −0.5mA
IO = −1.5mA
CMRR > 45 dB
0 < VCM < 1.8V
V+ = 1.8V to 5V
3.5
4
1.7
1.47
−0.1
46
55
6
6
1.74
1.63
52
166
78
80
100
220
1.9
mA
V
mV
V
V
dB
dB
ILEAKAGE Output Leakage Current
VO = 1.8V (LMV7275 only)
2 pA
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 RL > 1Mto
V. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Condition
Min Typ Max
(Note 6) (Note 5) (Note 6)
Units
tPHL Propagation Delay
(High to Low)
Input Overdrive = 20mV
Load = 50pF//5k
880 ns
Input Overdrive = 50mV
Load = 50pF//5k
570 ns
tPLH Propagation Delay
(Low to High)
Input Overdrive = 20mV
Load = 50pF//5k
1100
ns
Input Overdrive = 50mV
Load = 50pF//5k
800 ns
www.national.com
2


Part Number LMV7271
Description Single & Dual / 1.8V Low Power Comparators with Rail-to-Rail Input
Maker National Semiconductor
Total Page 16 Pages
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