National Semiconductor LMC6762 Technical data
查询LMC6762供应商
LMC6762
Dual MicroPower Rail-To-Rail Input CMOS Comparator
with Push-Pull Output
LMC6762 Dual MicroPower Rail-To-Rail Input CMOS Comparator with Push-Pull Output
July 1997
General Description
The LMC6762 is an ultra low power dual comparator with a
maximum supply current of 10 µA/comparator. It is designed
to operate over a wide range of supply voltages, from 2.7V to
15V. The LMC6762 has guaranteed specs at 2.7V to meet
the demands of 3V digital systems.
The LMC6762 has an input common-mode voltage range
which exceeds both supplies. This is a significant advantage
in low-voltage applications. The LMC6762 also features a
push-pull output that allows direct connections to logic devices without a pull-up resistor.
A quiescent power consumption of 50 µW/amplifier
+
=
@
(
V
5V) makes the LMC6762 ideal for applications in
portable phones and hand-held electronics. The ultra-low
supply current is also independent of power supply voltage.
Guaranteed operation at 2.7V and a rail-to-rail performance
makes this device ideal for battery-powered applications.
Refer to the LMC6772 datasheet for an open-drain version
of this device.
Connection Diagram
8-Pin DIP/SO
Features
(Typical unless otherwise noted)
n Low power consumption (max): I
n Wide range of supply voltages: 2.7V to 15V
n Rail-to-rail input common mode voltage range
n Rail-to-rail output swing (Within 100 mV of the supplies,
+
=
@
V
n Short circuit protection: 40 mA
n Propagation delay (
2.7V, and I
overdrive): 4 µs
LOAD
=
2.5 mA)
+
=
@
V
=
S
5V, 100 mV
10 µA/comp
Applications
n Laptop computers
n Mobile phones
n Metering systems
n Hand-held electronics
n RC timers
n Alarm and monitoring circuits
n Window comparators, multivibrators
DS012320-1
Top View
Ordering Information
Package Temperature Range NSC Drawing Transport
−40˚C to +85˚C Media
8-Pin Molded DIP LMC6762AIN, LMC6762BIN N08E Rails
8-Pin Small Outline LMC6762AIM, LMC6762BIM M08A Rails
LMC6762AIMX, LMC6762BIMX M08A Tape and Reel
© 1999 National Semiconductor Corporation DS012320 www.national.com
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) 2 KV
Differential Input Voltage (V
Voltage at Input/Output Pin (V
Supply Voltage (V
+–V−
) 16V
Current at Input Pin
Current at Output Pin
(Notes 7, 3)
Current at Power Supply Pin,
LMC6762 40 mA
+
)+0.3V to (V−)−0.3V
+
)+0.3V to (V−)−0.3V
±
5mA
±
30 mA
Lead Temperature
(Soldering, 10 seconds) 260˚C
Storage Temperature Range −65˚C to +150˚C
Junction Temperature (Note 4) 150˚C
Operating Ratings (Note 1)
Supply Voltage 2.7 ≤ V
Junction Temperature Range
LMC6762AI, LMC6762BI −40˚C ≤ T
Thermal Resistance (θ
)
JA
N Package, 8-Pin Molded DIP 100˚C/W
M Package, 8-Pin Surface Mount 172˚C/W
≤ 15V
S
≤ +85˚C
J
2.7V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
temperature extremes.
Symbol Parameter Conditions
V
Input Offset Voltage 3 5 15 mV
OS
=
J
25˚C, V
+
=
2.7V, V
−
=
Typ
(Note 5)
+
=
0V, V
/2. Boldface limits apply at the
V
CM
LMC6762AI LMC6762BI Units
Limit Limit
(Note 6) (Note 6)
818max
TCV
Input Offset Voltage 2.0 µV/˚C
OS
Temperature Drift
Input Offset Voltage (Note 8) 3.3 µV/Month
Average Drift
I
I
Input Current 0.02 pA
B
Input Offset Current 0.01 pA
OS
CMRR Common Mode Rejection Ratio 75 dB
PSRR Power Supply Rejection Ratio
A
V
Voltage Gain (By Design) 100 dB
V
Input Common-Mode CMRR>55 dB 3.0 2.9 2.9 V
CM
±
1.35V<V
<
±
7.5V 80 dB
S
Voltage Range 2.7 2.7 min
−0.3 −0.2 −0.2 V
0.0 0.0 max
V
Output Voltage High I
OH
=
2.5 mA 2.5 2.4 2.4 V
LOAD
2.3 2.3 min
V
Output Voltage Low I
OL
=
2.5 mA 0.2 0.3 0.3 V
LOAD
0.4 0.4 max
I
Supply Current For Both Comparators 12 20 20 µA
S
(Output Low) 25 25 max
www.national.com 2
5.0V and 15.0V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
apply at the temperature extremes.
Symbol Parameter Conditions
V
OS
TCV
Input Offset Voltage 3 5 15 mV
Input Offset Voltage V
OS
Temperature Drift V
Input Offset Voltage V
Average Drift V
I
B
I
OS
Input Current V=5V 0.04 pA
Input Offset Current V
CMRR Common Mode V
Rejection Ratio V
PSRR Power Supply Rejection Ratio
A
V
V
CM
Voltage Gain (By Design) 100 dB
Input Common-Mode V
Voltage Range CMRR
V
OH
V
OL
I
S
I
SC
Output Voltage High V
Output Voltage Low V
Supply Current For Both Comparators 12 20 20 µA
Short Circuit Current Sourcing 30 mA
=
25˚C, V
J
+
=
5V 2.0 µV/˚C
+
=
15V 4.0
+
=
5V (Note 8) 3.3 µV/Month
+
=
15V (Note 8) 4.0
+
=
5V 0.02 pA
+
=
5V 75 dB
+
=
15V 82 dB
±
2.5V<V
+
=
+
=
V
CMRR
+
=
I
LOAD
+
=
V
I
LOAD
+
=
I
LOAD
+
=
V
I
LOAD
<
±
S
5.0V 5.3 5.2 5.2 V
>
55 dB 5.0 5.0 min
15.0V 15.3 15.2 15.2 V
>
55 dB 15.0 15.0 min
5V 4.8 4.6 4.6 V
=
5mA 4.45 4.45 min
15V 14.8 14.6 14.6 V
=
5mA 14.45 14.45 min
5V 0.2 0.4 0.4 V
=
5mA 0.55 0.55 max
15V 0.2 0.4 0.4 V
=
5mA 0.55 0.55 max
(Output Low) 25 25 max
Sinking, V
=
12V 45
O
(Note 7)
+
=
5.0V and 15.0V, V
Typ
(Note 5)
−
=
0V, V
+
=
V
CM
/2. Boldface limits
LMC6762AI LMC6762BI
(Note 6) (Note 6)
UnitsLimit Limit
818max
5V 80 dB
−0.3 −0.2 −0.2 V
0.0 0.0 max
−0.3 −0.2 −0.2 V
0.0 0.0 max
www.national.com3
AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
the temperature extreme.
Symbol Parameter Conditions Typ
=
J
25˚C, V
+
=
5V, V
−
=
0V, V
CM
(Note 5)
+
=
=
/2. Boldface limits apply at
V
V
O
LMC6762AI LMC6762BI Units
Limit Limit
(Note 6) (Note 6)
t
RISE
Rise Time f=10 kHz, C
=
50 pF, 0.3 µs
L
Overdrive=10 mV (Notes 9, 10)
t
FALL
Fall Time f=10 kHz, C
=
50 pF, 0.3 µs
L
Overdrive=10 mV (Notes 9, 10)
t
PHL
Propagation Delay f=10 kHz, Overdrive = 10 mV 10 µs
(High to Low) C
=
50 pF Overdrive = 100 mV 4 µs
L
(Notes 9, 10)
+
=
V
2.7V, Overdrive = 10 mV 10 µs
f=10 kHz,
=
C
50 pF Overdrive = 100 mV 4 µs
L
(Notes 9, 10)
t
PLH
Propagation Delay f=10 kHz, Overdrive = 10 mV 6 µs
(Low to High) C
=
50 pF Overdrive = 100 mV 4 µs
L
(Notes 9, 10)
+
=
V
2.7V, Overdrive = 10 mV 7 µs
f=10 kHz,
=
C
50 pF Overdrive = 100 mV 4 µs
L
(Notes 9, 10)
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, 1.5 kΩ in series with 100 pF.
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150˚C. Output currents in excess of
Note 4: The maximum power dissipation is a function of T
=
(T
P
D
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Do not short circuit output to V
Note 8: Input Offset Voltage Average Drift is calculated by dividing the accelerated operating life drift average by the equivalent operational time. The Input Offset
Voltage Average Drift represents the input offset voltage change at worst-case input conditions.
Note 9: C
Note 10: The rise and fall times are measured with a 2V input step. The propagation delays are also measured with a 2V input step.
)/θJA.All numbers apply for packages soldered directly into a PC board.
J(max)–TA
+
, when V+is greater than 12V or reliability will be adversely affected.
includes the probe and jig capacitance.
L
J(max)
±
, θJA, and TA. The maximum allowable power dissipation at any ambient temperature is
30 mA over long term may adversely affect reliability.
Typical Performance Characteristics V
Supply Current vs Supply
Voltage (Output High)
DS012320-20
www.national.com 4
Supply Current vs Supply
Voltage (Output Low)
+
=
5V, Single Supply, T
DS012320-21
=
25˚C unless otherwise specified
A
Input Current vs
Common-Mode Voltage
DS012320-22
Loading...