Document
LMC6762 Dual MicroPower Rail-To-Rail Input CMOS Comparator with Push-Pull Output
July 1997
LMC6762 Dual MicroPower Rail-To-Rail Input CMOS Comparator with Push-Pull Output
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.
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 Rail-to-rail output swing (Within 100 mV of the supplies, @ V+ = 2.7V, and ILOAD = 2.5 mA) n Short circuit protection: 40 mA n Propagation delay (@ V+ = 5V, 100 mV overdrive): 4 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
DS012320-1
Top View
Ordering Information
Package 8-Pin Molded DIP 8-Pin Small Outline Temperature Range −40˚C to +85˚C LMC6762AIN, LMC6762BIN LMC6762AIM, LMC6762BIM LMC6762AIMX, LMC6762BIMX N08E M08A M08A NSC Drawing Transport Media Rails Rails Tape and Reel
© 1999 National Semiconductor Corporation
DS012320
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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) Differential Input Voltage Voltage at Input/Output Pin Supply Voltage (V+–V−) Current at Input Pin Current at Output Pin (Notes 7, 3) Current at Power Supply Pin, LMC6762 2 KV (V+)+0.3V to (V−)−0.3V (V+)+0.3V to (V−)−0.3V 16V ± 5 mA
Lead Temperature (Soldering, 10 seconds) Storage Temperature Range Junction Temperature (Note 4)
260˚C −65˚C to +150˚C 150˚C
Operating Ratings (Note 1)
Supply Voltage Junction Temperature Range LMC6762AI, LMC6762BI Thermal Resistance (θJA) 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
± 30 mA
40 mA
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. LMC6762AI Symbol VOS TCVOS Parameter 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 VOH VOL IS Output Voltage High Output Voltage Low Supply Current ILOAD = 2.5 mA ILOAD = 2.5 mA For Both Comparators (Output Low) 2.5 0.2 12 0.02 0.01 75 pA pA dB dB dB 2.9 2.7 −0.2 0.0 2.4 2.3 0.3 0.4 20 25 2.9 2.7 −0.2 0.0 2.4 2.3 0.3 0.4 20 25 V min V max V min V max µA max (Note 8) 3.3 µV/Month Conditions Typ (Note 5) 3 2.0 Limit (Note 6) 5 8 LMC6762BI Limit (Note 6) 15 18 mV max µV/˚C Units
± 1.35V < VS < ± 7.5V
(By Design) CMRR > 55 dB
80 100 3.0
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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. LMC6762AI Symbol VOS TCVOS Parameter 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 V+ = 5V V+ = 15V V+ = 5V (Note 8) V+ = 15V (Note 8) V = 5V V+ = 5V V+ = 5V V+ = 15V Conditions Typ (Note 5) 3 2.0 4.0 3.3 4.0 0.04 0.02 75 82 80 100 5.3 −0.3 V+ = 15.0V CMRR > 55 dB −0.3 VOH Output Voltage High V+ = 5V ILOAD = 5mA V+ = 15V ILOAD = 5 mA V+ = 5V ILOAD = 5 mA V+ = 15V ILOAD = 5 mA IS ISC Supply Current Short Circuit Current For Both Comparators (Output Low) Sourcing Sinking, VO = 12V (Note 7) 30 45 12 4.8 14.8 0.2 0.2 15.3 5.2 5.0 −0.2 0.0 15.2 15.0 −0.2 0.0 4.6 4.45 14.6 14.45 0.4 0.55 0.4 0.55 20 25 5.2 5.0 −0.2 0.0 15.2 15.0 −0.2 0.0 4.6 4.45 14.6 14.45 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 min V min V max V max µA max mA µV/Month Limi.