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Details, datasheet, quote on part number:LMC6772MDA
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Datasheet text preview:
LMC6772 Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output
August 2000
LMC6772 Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output
General Description
The LMC6772 is an ultra low power dual comparator with a maximum 10 µA/comparator power supply current. It is designed to operate over a wide range of supply voltages, with a minimum supply voltage of 2.7V. The common mode voltage range of the LMC6772 exceeds both the positive and negative supply rails, a significant advantage in single supply applications. The open drain output of the LMC6772 allows for wired-OR configurations. The open drain output also offers the advantage of allowing the output to be pulled to any voltage rail up to 15V, regardless of the supply voltage of the LMC6772. The LMC6772 is targeted for systems where low power consumption is the critical parameter. Guaranteed operation at supply voltages of 2.7V and rail-to-rail performance makes this comparator ideal for battery-powered applications. Refer to the LMC6762 datasheet for a push-pull output stage version of this device.
Features
(Typical unless otherwise noted) n Low power consumption (max): IS = 10 µA/comp n Wide range of supply voltages: 2.7V to 15V n Rail-to-Rail Input Common Mode Voltage Range n Open drain output n Short circuit protection: 40 mA n Propagation delay (@VS = 5V, 100 mV overdrive): 5 µs
Applications
n n n n n n n Laptop computers Mobile phones Metering systems Hand-held electronics RC timers Alarm and monitoring circuits Window comparators, multivibrators
Connection Diagram
8-Pin DIP/SO/MSOP
DS012347-1
Top View
© 2000 National Semiconductor Corporation
DS012347
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LMC6772
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) 1.5 kV Differential Input Voltage (V+)+0.3V to (V-)-0.3V Voltage at Input/Output Pin (V+)+0.3V to (V-)-0.3V + - 16V Supply Voltage (V V ) ± 5 mA Current at Input Pin (Note 8) ± 30 mA Current at Output Pin (Notes 3, 7) Current at Power Supply Pin, LMC6772 40 mA Lead Temperature (Soldering, 10 seconds) 260°C
Storage Temperature Range Junction Temperature (Note 4)
-65°C to +150°C 150°C
Operating Ratings (Note 1)
Supply Voltage Junction Temperature Range LMC6772AI, LMC6772BI Thermal Resistance (JA) N Package, 8-Pin Molded DIP M Package, 8-Pin Surface Mount 2.7 VS 15V 40°C TJ +85°C 100°C/W 172°C/W
2.7V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 2.7V, V- = 0V, VCM = V+/2. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ (Note 5) LMC6772AI Limit (Note 6) VOS TCVOS Input Offset Voltage Input Offset Voltage Temperature Drift Input Offset Voltage Average Drift IB IOS CMRR PSRR AV VCM Input Current Input Offset Current Common Mode Rejection Ratio Power Supply Rejection Ratio Voltage Gain Input Common-Mode Voltage Range -0.3 VOL IS ILeakage Output Voltage Low Supply Current Output Leakage Current ILOAD = 2.5 mA For Both Comparators (Output Low) VIN(+) = 0.5V, VIN(-) = 0V, VO = 15V 0.1 0.2 12 0.02 0.01 75 pA pA dB dB dB 2.9 2.7 -0.2 0.0 0.3 0.4 20 25 500 2.9 2.7 -0.2 0.0 0.3 0.4 20 25 500 V min V max V max µA max nA (Note 10) 3.3 µV/Month 3 2.0 5 8 LMC6772BI Limit (Note 6) 15 18 mV max µV/°C Units
± 1.35V < VS < ± 7.5V
(By Design) CMRR > 55 dB
80 100 3.0
5.0V and 15.0V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 5.0V and 15.0V, V- = 0V, VCM = V+/2. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ (Note 5) LMC6772AI Limit (Note 6) VOS TCVOS Input Offset Voltage Input Offset Voltage Temperature Drift Input Offset Voltage Average Drift
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LMC6772BI Limit (Note 6) 15 18
Units
3 V+ = 5V V = 15V V+ = 5V (Note 10) V+ = 15V (Note 10)
2
+
5 8
mV max µV/°C µV/Month
2.0 4.0 3.3 4.0
LMC6772
5.0V and 15.0V Electrical Characteristics
Symbol Parameter Conditions
(Continued)
Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 5.0V and 15.0V, V- = 0V, VCM = V+/2. Boldface limits apply at the temperature extremes. Typ (Note 5) LMC6772AI Limit (Note 6) IB IOS CMRR PSRR AV VCM Input Current Input Offset Current Common Mode Rejection Ratio Power Supply Rejection Ratio Voltage Gain Input Common-Mode Voltage Range V = 5V V+ = 5V V+ = 5V V = 15V
+
LMC6772BI Limit (Note 6)
Units
0.04 0.02 75 82 80 100 5.3 -0.3 5.2 5.0 -0.2 0.0 15.2 15.0 -0.3 -0.2 0.0 0.4 0.55 0.2 12 45 0.4 0.55 20 25 5.2 5.0 -0.2 0.0 15.2 15.0 -0.2 0.0 0.4 0.55 0.4 0.55 20 25
pA pA dB dB dB dB V min V max V min V max V max V max µA max mA
± 2.5V < VS < ± 5V
(By Design) V+ = 5.0V CMRR > 55 dB
V+ = 15.0V CMRR > 55 dB
15.3
VOL
Output Voltage Low
V+ = 5V ILOAD = 5 mA V+ = 15V ILOAD = 5 mA
0.2
IS ISC
Supply Current Short Circuit Current
For Both Comparators (Output Low) V+ = 15V, Sinking, VO = 12V (Note 7)
AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 5V, V- = 0V, VCM = VO = V+/2. Boldface limits apply at the temperature extreme. Symbol Parameter Conditions Typ (Note 5) LMC6772AI Limit (Note 6) tRISE tFALL tPHL Rise Time Fall Time Propagation Delay (High to Low) f = 10 kHz, CL = 50 pF, Overdrive = 10 mV (Note 9) f = 10 kHz, CL = 50 pF, Overdrive = 10 mV (Note 9) f = 10 kHz, CL = 50 pF (Note 9) V+ = 2.7V, f = 10 kHz, CL = 50 pF (Note 9) 100 mV 4 µs 10 mV 10 µs 10 mV 100 mV 10 4 µs µs 0.3 µs 0.3 LMC6772BI Limit (Note 6) µs Units
3
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