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LPV7215 Micropower, CMOS Input, RRIO, 1.8V Push-Pull Output Comparator
August 16, 2011
LPV7215
Micropower, CMOS Input, RRIO, 1.8V, Push-Pull Output
Comparator
General Description
The LPV7215 is an ultra low-power comparator with a typical
power supply current of 580 nA. It has the best-in-class power
supply current versus propagation delay performance avail-
able among National's low-power comparators. The propa-
gation delay is as low as 4.5 microseconds with 100 mV
overdrive at 1.8V supply.
Designed to operate over a wide range of supply voltages,
from 1.8V to 5.5V, with guaranteed operation at 1.8V, 2.7V
and 5.0V, the LPV7215 is ideal for use in a variety of battery-
powered applications. With rail-to-rail common mode voltage
range, the LPV7215 is well suited for single-supply operation.
Featuring a push-pull output stage, the LPV7215 allows for
operation with absolute minimum power consumption when
driving any capacitive or resistive load.
Available in a choice of space-saving packages, the LPV7215
is ideal for use in handheld electronics and mobile phone ap-
plications. The LPV7215 is manufactured with National's ad-
vanced VIP50 process.
Features
(For V
+
= 1.8V, typical unless otherwise noted)
580 nA
■
Ultra low power consumption
1.8V to 5.5V
■
Wide supply voltage range
4.5 µs
■
Propagation delay
Push-Pull output current drive @ 5V
19 mA
■
−40°C to 85°C
■
Temperature range
■
Rail-to-Rail input
■
Tiny 5-Pin SOT23 and SC70 packages
Applications
■
■
■
■
■
RC timers
Window detectors
IR receiver
Multivibrators
Alarm and monitoring circuits
Typical Application
20123605
Supply Current vs. Supply Voltage
20123602
Propagation Delay vs. Overdrive
© 2011 National Semiconductor Corporation
201236
www.national.com
LPV7215
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 (Note
2)
Soldering Information
Infrared or Convection (20 sec)
Wave Soldering Lead Temp. (10 sec)
235°C
260°C
Human Body Model
Machine Model
V
IN
Differential
Supply Voltage (V
+
- V
−
)
Voltage at Input/Output pins
Storage Temperature Range
Junction Temperature (Note
3)
2000V
200V
±2.5V
6V
+
+0.3V, V
−
−0.3V
V
−65°C to +150°C
+150°C
(Note
8)
Operating Ratings
Temperature Range (Note
3)
Supply Voltage (V
+
– V
−
)
(Note
1)
−40°C to 85°C
1.8V to 5.5V
456°C/W
234°C/W
Package Thermal Resistance (θ
JA
(Note
3))
5-Pin SC70
5-Pin SOT23
1.8V Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for T
A
= 25°C, V
+
= 1.8V, V
−
= 0V, and V
CM
= V
+
/2, V
O
= V
−
.
Boldface
limits
apply at the temperature extremes.
Symbol
I
S
Supply Current
Parameter
V
CM
= 0.3V
V
CM
= 1.5V
V
OS
Input Offset Voltage
V
CM
= 0V
V
CM
= 1.8V
TCV
OS
I
B
I
OS
CMRR
Input Offset Average Drift
Input Bias Current (Note
6)
Input Offset Current
Common Mode Rejection Ratio
V
CM
Stepped from 0V to 0.7V
V
CM
Stepped from 1.2V to 1.8V
V
CM
Stepped from 0V to 1.8V
PSRR
CMVR
A
V
V
O
Power Supply Rejection Ratio
Input Common-Mode Voltage Range
Voltage Gain
Output Swing High
I
O
= 500 µA
I
O
= 1 mA
Output Swing Low
I
O
= −500 µA
I
O
= −1 mA
I
OUT
Output Current
Source
V
O
= V
+
/2
Sink
V
O
= V
+
/2
1.75
1.5
2.35
1.75
1.63
1.60
1.46
1.40
V
+
= 1.8V to 5.5V, V
CM
= 0V
CMRR
≥
40 dB
66
65
68
65
44
43
66
63
−0.1
120
1.69
1.60
88
180
2.26
3.1
mA
180
210
310
370
V
(Note
7)
V
CM
= 1.6V
Conditions
Min
(Note
5)
Typ
(Note
4)
580
790
±0.3
±0.4
±1
−40
10
88
87
77
82
1.9
dB
V
dB
Max
(Note
5)
750
825
980
1050
±6
±8
±5
±7
Units
nA
mV
μV/C
fA
fA
dB
mV
www.national.com
2
LPV7215
Symbol
Parameter
Propagation Delay
(High to Low)
Propagation Delay
(Low to High)
Conditions
Overdrive = 10 mV
Overdrive = 100 mV
Overdrive = 10 mV
Overdrive = 100 mV
Overdrive = 10 mV
C
L
= 30 pF, R
L
= 1 MΩ
Overdrive = 100 mV
C
L
= 30 pF, R
L
= 1 MΩ
Min
(Note
5)
Typ
(Note
4)
13
4.5
12.5
6.6
80
75
70
65
Max
(Note
5)
6.5
8
9
10.5
Units
μs
μs
t
rise
Rise Time
ns
t
fall
Fall Time
Overdrive = 10 mV
C
L
= 30 pF, R
L
= 1 MΩ
Overdrive = 100 mV
C
L
= 30 pF, R
L
= 1 MΩ
ns
2.7V Electrical Characteristics
(Note
8)
Unless otherwise specified, all limits are guaranteed for T
A
= 25°C, V
+
= 2.7V, V
−
= 0V, and V
CM
= V
+
/2, V
O
= V
−
.
Boldface
limits
apply at the temperature extremes.
Symbol
I
S
Supply Current
Parameter
V
CM
= 0.3V
V
CM
= 2.4V
V
OS
Input Offset Voltage
V
CM
= 0V
V
CM
= 2.7V
TCV
OS
I
B
I
OS
CMRR
Input Offset Average Drift
Input Bias Current (Note
6)
Input Offset Current
Common Mode Rejection Ratio
V
CM
Stepped from 0V to 1.6V
V
CM
Stepped from 2.1V to 2.7V
V
CM
Stepped from 0V to 2.7V
PSRR
CMVR
A
V
V
O
Power Supply Rejection Ratio
Input Common-Mode Voltage Range
Voltage Gain
Output Swing High
I
O
= 500 μA
I
O
= 1 mA
Output Swing Low
I
O
= −500 μA
I
O
= −1 mA
2.57
2.55
2.47
2.43
V
+
= 1.8V to 5.5V, V
CM
= 0V
CMRR
≥
40 dB
72
69
71
66
47
46
66
63
−0.1
120
2.62
2.53
60
120
130
160
250
300
V
(Note
7)
V
CM
= 1.8V
Conditions
Min
(Note
5)
Typ
(Note
4)
605
815
±0.3
±0.3
±1
−40
20
90
94
80
82
2.8
Max
(Note
5)
780
860
1010
1090
±6
±8
±5
±7
Units
nA
mV
μV/C
fA
fA
dB
dB
V
dB
mV
3
www.national.com
LPV7215
Symbol
I
OUT
Output Current
Parameter
Source
V
O
= V
+
/2
Sink
V
O
= V
+
/2
Propagation Delay
(High to Low)
Propagation Delay
(Low to High)
Conditions
Min
(Note
5)
4.5
3.8
5.6
4
Typ
(Note
4)
5.7
7.5
14.5
5.8
15
7.5
90
85
85
75
Max
(Note
5)
Units
mA
Overdrive = 10 mV
Overdrive = 100 mV
Overdrive = 10 mV
Overdrive = 100 mV
Overdrive = 10 mV
C
L
= 30 pF, R
L
= 1 MΩ
Overdrive = 100 mV
C
L
= 30 pF, R
L
= 1 MΩ
8.5
9.5
10
11
μs
t
rise
Rise Time
ns
t
fall
Fall Time
Overdrive = 10 mV
C
L
= 30 pF, R
L
= 1 MΩ
Overdrive = 100 mV
C
L
= 30 pF, R
L
= 1 MΩ
ns
5V Electrical Characteristics
(Note
8)
Unless otherwise specified, all limits are guaranteed for T
A
= 25°C, V
+
= 5V, V
−
= 0V, and V
CM
= V
+
/2, V
O
= V
−
.
Boldface
limits
apply at the temperature extremes.
Symbol
I
S
Supply Current
Parameter
V
CM
= 0.3V
V
CM
= 4.7V
V
OS
Input Offset Voltage
V
CM
= 0V
V
CM
= 5V
TCV
OS
I
B
I
OS
CMRR
Input Offset Average Drift
Input Bias Current (Note
6)
Input Offset Current
Common Mode Rejection Ratio
V
CM
Stepped from 0V to 3.9V
V
CM
Stepped from 4.4V to 5V
V
CM
Stepped from 0V to 5V
PSRR
CMVR
A
V
Power Supply Rejection Ratio
Input Common-Mode Voltage Range
Voltage Gain
V
+
= 1.8V to 5.5V, V
CM
= 0V
CMRR
≥
40 dB
72
69
73
70
53
52
66
63
−0.1
120
(Note
7)
V
CM
= 4.5V
±1
−400
20
98
92
82
82
5.1
Conditions
Min
(Note
5)
Typ
(Note
4)
612
825
±0.3
Max
(Note
5)
790
970
1030
1230
±6
±8
±5
±7
Units
nA
mV
μV/C
fA
fA
dB
dB
V
dB
www.national.com
4
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