Datasheet

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LMC6772

www.ti.com

SNOS749F –SEPTEMBER 1995–REVISED MARCH 2013

Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output

Check for Samples: LMC6772

FEATURES

DESCRIPTION

The LMC6772 is an ultra low power dual comparator

(Typical Unless Otherwise Noted)

with a maximum 10 μA/comparator power supply

• Low Power Consumption (Max): I

= 10

current. It is designed to operate over a wide range of

μA/comp

supply voltages, with a minimum supply voltage of

• Wide Range of Supply Voltages: 2.7V to 15V

2.7V.

• Rail-to-Rail Input Common Mode Voltage

The common mode voltage range of the LMC6772

Range

exceeds both the positive and negative supply rails, a

significant advantage in single supply applications.

• Open Drain Output

The open drain output of the LMC6772 allows for

• Short Circuit Protection: 40 mA

wired-OR configurations. The open drain output also

• Propagation Delay (@V

= 5V, 100 mV

offers the advantage of allowing the output to be

Overdrive): 5 μs

pulled to any voltage rail up to 15V, regardless of the

supply voltage of the LMC6772.

• LMC6772Q is AEC-Q Qualified

• LMC6772Q has −40°C to 125°C Temperature

The LMC6772 is targeted for systems where low

Range power consumption is the critical parameter. Ensured

operation at supply voltages of 2.7V and rail-to-rail

performance makes this comparator ideal for battery-

APPLICATIONS

powered applications.

• Laptop Computers

Refer to the LMC6762 datasheet for a push-pull

• Mobile Phones

output stage version of this device.

• Metering Systems

• Hand-Held Electronics

• RC Timers

• Alarm and Monitoring Circuits

• Window Comparators, Multivibrators

Connection Diagram

8-Pin PDIP/SOIC/VSSOP - Top View

See Package Number P0008E/D0008A/DGK0008A

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (26 pages)

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LMC6772 www.ti.com SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output Check for Samples: LMC6772 FEATURES DESCRIPTION 1 (Typical Unless Otherwise Noted) 2 • • • • • • • • Low Power Consumption (Max): IS = 10 μA/comp Wide Range of Supply Voltages: 2.
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LMC6772 SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) Value ESD Tolerance (2) Unit 1.5 kV Differential Input Voltage (V+)+0.3V to (V−)−0.3 V Voltage at Input/Output Pin (V+)+0.3V to (V−)−0.
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LMC6772 www.ti.com SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 2.7V Electrical Characteristics Unless otherwise specified, all limits ensured for TJ = 25°C, V+ = 2.7V, V− = 0V, VCM = V+/2. Boldface limits apply at the temperature extremes. Symbol Parameter VOS Input Offset Voltage TCVOS Input Offset Voltage Temperature Drift Input Offset Voltage Average Drift Conditions Typ (1) 3 See (3) LMC6772AI LMC6772BI Limit (2) Limit (2) 5 8 15 18 LMC6772Q Limit (2) Units 10 13 mV max 2.
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LMC6772 SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 www.ti.com 5.0V and 15.0V Electrical Characteristics Unless otherwise specified, all limits ensured 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 VOS Input Offset Voltage TCVOS Input Offset Voltage Temperature V+ = 5V Drift V+ = 15V IB Typ (1) 3 LMC6772AI LMC6772BI Limit (2) Limit (2) 5 8 15 18 LMC6772Q Limit (2) Units 10 13 mV max μV/°C 2.0 4.
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LMC6772 www.ti.com SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 AC Electrical Characteristics Unless otherwise specified, all limits ensured for TJ = 25°C, V+ = 5V, V− = 0V, VCM = VO = V+/2. Boldface limits apply at the temperature extreme. Symbol Parameter Typ (1) Conditions LMC6772AI Limit (2) LMC6772BI Limit (2) Units tRISE Rise Time f = 10 kHz, CL = 50 pF, Overdrive = 10 mV (3) 0.3 μs tFALL Fall Time f = 10 kHz, CL = 50 pF, Overdrive = 10 mV (3) 0.
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LMC6772 SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics + V = 5V, Single Supply, TA = 25°C unless otherwise specified 6 Supply Current vs. Supply Voltage (Output High) Supply Current vs. Supply Voltage (Output Low) Figure 1. Figure 2. Input Current vs. Common-Mode Voltage Input Current vs. Common-Mode Voltage Figure 3. Figure 4. Input Current vs. Common-Mode Voltage Input Current vs. Temperature Figure 5. Figure 6.
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LMC6772 www.ti.com SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 Typical Performance Characteristics (continued) + V = 5V, Single Supply, TA = 25°C unless otherwise specified ΔVOS vs ΔVCM, VS = 2.7V ΔVOS vs ΔVCM, VS = 5V Figure 7. Figure 8. ΔVOS vs ΔVCM, VS = 15V Output Voltage vs. Output Current (Sinking) Figure 9. Figure 10. Output Voltage vs. Output Current (Sinking) Output Voltage vs. Output Current (Sinking) Figure 11. Figure 12.
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LMC6772 SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) + V = 5V, Single Supply, TA = 25°C unless otherwise specified 8 Output Short Circuit Current (Sinking) vs. Supply Voltage Leakage Current vs. Output Voltage Figure 13. Figure 14. Response Time for Overdrive (tPLH) Response Time for Overdrive (tPHL) Figure 15. Figure 16. Response Time for Overdrive (tPLH) Response Time for Overdrive (tPHL) Figure 17. Figure 18.
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LMC6772 www.ti.com SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 Typical Performance Characteristics (continued) + V = 5V, Single Supply, TA = 25°C unless otherwise specified Response Time for Overdrive (tPLH) Response Time for Overdrive (tPHL) Figure 19. Figure 20. Response Time vs. Capacitive Load Figure 21.
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LMC6772 SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 www.ti.com LMC6772Q Supply Current vs. Supply Voltage (Output High) Supply Current vs. Supply Voltage (Output Low) 20 20 85°C 18 125°C 16 14 SUPPLY CURRENT (PA) (Both Comparators) SUPPLY CURRENT (PA) (Both Comparators) 18 25°C -40°C 12 10 8 6 4 -40°C 10 8 6 Pos Input = 0.0V Neg Input = 0.1V 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 2 3 4 5 6 7 8 9 10 11 12 13 14 15 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) 600 Figure 22. Figure 23.
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LMC6772 www.ti.com SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 LMC6772Q (continued) Output Leakage vs. Output Voltage 100 125°C OUTPUT LEAKAGE (nA) 10 85°C 0 0.1 25°C 0.01 0.001 -40°C (estimated) VS = 2.7V 0.0001 2 3 4 5 6 7 8 9 10 11 12 13 14 15 OUTPUT VOLTAGE (V) Figure 28.
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LMC6772 SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 www.ti.com APPLICATION INFORMATION INPUT COMMON-MODE VOLTAGE RANGE At supply voltages of 2.7V, 5V and 15V, the LMC6772 has an input common-mode voltage range which exceeds both supplies. As in the case of operational amplifiers, CMVR is defined by the VOS shift of the comparator over the common-mode range of the device. A CMRR (ΔVOS/ΔVCM) of 75 dB (typical) implies a shift of < 1 mV over the entire common-mode range of the device.
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LMC6772 www.ti.com SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 OUTPUT SHORT CIRCUIT CURRENT The LMC6772 has short circuit protection of 40 mA. However, it is not designed to withstand continuous short circuits, transient voltage or current spikes, or shorts to any voltage beyond the supplies. A resistor is series with the output should reduce the effect of shorts. For outputs which send signals off PC boards additional protection devices, such as diodes to the supply rails, and varistors may be used.
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LMC6772 SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 www.ti.com TYPICAL APPLICATIONS UNIVERSAL LOGIC LEVEL SHIFTER The output of the LMC6772 is the uncommitted drain of the output NMOS transistor. Many drains can be tied together to provide an output OR'ing function. An output pullup resistor can be connected to any available power supply voltage within the permitted power supply range. Figure 32. Universal Logic Level Shifter The two 1 kΩ resistors bias the input to half of the power supply voltage.
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LMC6772 www.ti.com SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 A bi-stable multivibrator has two stable states. The reference voltage is set up by the voltage divider of R2 and R3. A pulse applied to the SET terminal will switch the output of the comparator high. The resistor divider of R1, R4, and R5 now clamps the non-inverting input to a voltage greater than the reference voltage. A pulse applied to RESET will now toggle the output low. ZERO CROSSING DETECTOR Figure 35.
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LMC6772 SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 www.ti.com Figure 37. Time Delay Generator The circuit shown above provides output signals at a prescribed time interval from a time reference and automatically resets the output when the input returns to ground. Consider the case of VIN = 0. The output of comparator 4 is also at ground. This implies that the outputs of comparators 1, 2, and 3 are also at ground.
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LMC6772 www.ti.com SNOS749F – SEPTEMBER 1995 – REVISED MARCH 2013 REVISION HISTORY Changes from Revision E (March 2013) to Revision F • Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LMC6772AIMM VSSOP DGK 8 1000 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 LMC6772AIMM/NOPB VSSOP DGK 8 1000 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 LMC6772AIMMX/NOPB VSSOP DGK 8 3500 330.0 12.4 5.3 3.4 1.4 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMC6772AIMM VSSOP DGK 8 1000 210.0 185.0 35.0 LMC6772AIMM/NOPB VSSOP DGK 8 1000 210.0 185.0 35.0 LMC6772AIMMX/NOPB VSSOP DGK 8 3500 367.0 367.0 35.0 LMC6772AIMX SOIC D 8 2500 367.0 367.0 35.0 LMC6772AIMX/NOPB SOIC D 8 2500 367.0 367.0 35.0 LMC6772BIMX SOIC D 8 2500 367.0 367.0 35.
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