Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Comparator Multi-purpose Push pull, Rail-to-rail SOIC 8

LMC6762

www.ti.com

SNOS739D –JULY 1997–REVISED MARCH 2013

LMC6762 Dual MicroPower Rail-To-Rail Input CMOS Comparator with Push-Pull Output

Check for Samples: LMC6762

FEATURES

DESCRIPTION

The LMC6762 is an ultra low power dual comparator

• (Typical Unless Otherwise Noted)

with a maximum supply current of 10 μA/comparator.

• Low Power Consumption (Max): I

= 10

It is designed to operate over a wide range of supply

μA/comp

voltages, from 2.7V to 15V. The LMC6762 has

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

ensured specifications at 2.7V to meet the demands

of 3V digital systems.

• Rail-To-Rail Input Common Mode Voltage

Range

The LMC6762 has an input common-mode voltage

range which exceeds both supplies. This is a

• Rail-To-Rail Output Swing (Within 100 mV of

significant advantage in low-voltage applications. The

the Supplies, @ V

= 2.7V, and I

LOAD

= 2.5 mA)

LMC6762 also features a push-pull output that allows

• Short Circuit Protection: 40 mA

direct connections to logic devices without a pull-up

• Propagation Delay (@ V

= 5V, 100 mV

resistor.

Overdrive): 4 μs

A quiescent power consumption of 50 μW/amplifier

(@ V

= 5V) makes the LMC6762 ideal for

APPLICATIONS

applications in portable phones and hand-held

electronics. The ultra-low supply current is also

• Laptop Computers

independent of power supply voltage. Ensured

• Mobile Phones

operation at 2.7V and a rail-to-rail performance

• Metering Systems

makes this device ideal for battery-powered

• Hand-Held Electronics

applications.

• RC Timers

Refer to the LMC6772 datasheet for an open-drain

version of this device.

• Alarm and Monitoring Circuits

• Window Comparators, Multivibrators

Connection Diagram

Typical Application

8-Pin PDIP/SOIC

Top View

Zero Crossing Detector

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.

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 (21 pages)

PAGE 1
LMC6762 www.ti.com SNOS739D – JULY 1997 – REVISED MARCH 2013 LMC6762 Dual MicroPower Rail-To-Rail Input CMOS Comparator with Push-Pull Output Check for Samples: LMC6762 FEATURES 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 ensured specifications at 2.7V to meet the demands of 3V digital systems.
PAGE 2
LMC6762 SNOS739D – JULY 1997 – REVISED MARCH 2013 www.ti.com Absolute Maximum Ratings (1) (2) ESD Tolerance (3) 2 KV Differential Input Voltage (V+)+0.3V to (V−)−0.3V Voltage at Input/Output Pin (V+)+0.3V to (V−)−0.
PAGE 3
LMC6762 www.ti.com SNOS739D – JULY 1997 – REVISED MARCH 2013 2.7V Electrical Characteristics (continued) 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 VCM Parameter Input Common-Mode Conditions CMRR > 55 dB Typ (1) LMC6762AI Limit (2) 3.0 VOH Output Voltage High ILOAD = 2.5 mA 2.9 V 2.7 2.7 min −0.2 −0.2 V 0.0 0.0 max 2.4 2.4 V 2.3 2.3 min 0.3 0.3 V 0.4 0.
PAGE 4
LMC6762 SNOS739D – JULY 1997 – REVISED MARCH 2013 www.ti.com 5.0V and 15.0V Electrical Characteristics (continued) 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 VOL Parameter Conditions V+ = 5V Output Voltage Low LMC6762AI Typ (1) 0.2 ILOAD = 5 mA V+ = 15V 0.
PAGE 5
LMC6762 www.ti.com SNOS739D – JULY 1997 – REVISED MARCH 2013 Typical Performance Characteristics + V = 5V, Single Supply, TA = 25°C unless otherwise specified 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.
PAGE 6
LMC6762 SNOS739D – JULY 1997 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) + V = 5V, Single Supply, TA = 25°C unless otherwise specified 6 ΔVOS vs ΔVCM ΔVOS vs ΔVCM Figure 7. Figure 8. ΔVOS vs ΔVCM Output Voltage vs Output Current (Sourcing) Figure 9. Figure 10. Output Voltage vs Output Current (Sourcing) Output Voltage vs Output Current (Sourcing) Figure 11. Figure 12.
PAGE 7
LMC6762 www.ti.com SNOS739D – JULY 1997 – REVISED MARCH 2013 Typical Performance Characteristics (continued) + V = 5V, Single Supply, TA = 25°C unless otherwise specified Output Voltage vs Output Current (Sinking) Output Voltage vs Output Current (Sinking) Figure 13. Figure 14. Output Voltage vs Output Current (Sinking) Output Short Circuit Current vs Supply Voltage (Sourcing) Figure 15. Figure 16.
PAGE 8
LMC6762 SNOS739D – JULY 1997 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) + V = 5V, Single Supply, TA = 25°C unless otherwise specified 8 Response Time for Overdrive (tPHL) Response Time for Overdrive (tPLH) Figure 19. Figure 20. Response Time for Overdrive (tPHL) Response Time for Overdrive (tPLH) Figure 21. Figure 22. Response Time for Overdrive (tPHL) Response Time vs Capacitive Load Figure 23. Figure 24.
PAGE 9
LMC6762 www.ti.com SNOS739D – JULY 1997 – REVISED MARCH 2013 APPLICATION HINTS Input Common-Mode Voltage Range At supply voltages of 2.7V, 5V and 15V, the LMC6762 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.
PAGE 10
LMC6762 SNOS739D – JULY 1997 – REVISED MARCH 2013 www.ti.com Shoot-Through Current The shoot-through current is defined as the current surge, above the quiescent supply current, between the positive and negative supplies of a device. The current surge occurs when the output of the device switches states. This transient switching current results in glitches in the supply voltage. Usually, glitches in the supply lines are compensated by bypass capacitors.
PAGE 11
LMC6762 www.ti.com SNOS739D – JULY 1997 – REVISED MARCH 2013 It is worth noting here that the delta shift of the power supply voltage due to the transient currents causes a threshold shift of the comparator. This threshold shift is reduced by the high PSRR of the comparator. However, the value of the PSRR applicable in this instance is the transient PSRR and not the DC PSRR. The transient PSRR is significantly lower than the DC PSRR.
PAGE 12
LMC6762 SNOS739D – JULY 1997 – REVISED MARCH 2013 www.ti.com Typical Applications One-Shot Multivibrator Figure 30. One-Shot Multivibrator A monostable multivibrator has one stable state in which it can remain indefinitely. It can be triggered externally to another quasi-stable state. A monostable multivibrator can thus be used to generate a pulse of desired width. The desired pulse width is set by adjusting the values of C2 and R4.
PAGE 13
LMC6762 www.ti.com SNOS739D – JULY 1997 – REVISED MARCH 2013 A voltage divider of R4 and R5 establishes a reference voltage V1 at the non-inverting input. By making the series resistance of R1 and R2 equal to R5, the comparator will switch when VIN = 0. Diode D1 insures that V3 never drops below −0.7V. The voltage divider of R2 and R3 then prevents V2 from going below ground. A small amount of hysteresis is setup to ensure rapid output voltage transitions. Oscillator Figure 33.
PAGE 14
LMC6762 SNOS739D – JULY 1997 – REVISED MARCH 2013 www.ti.com Figure 34. 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.
PAGE 15
LMC6762 www.ti.com SNOS739D – JULY 1997 – REVISED MARCH 2013 REVISION HISTORY Changes from Revision C (March 2013) to Revision D • Page Changed layout of National Data Sheet to TI format ..........................................................................................................
PAGE 16
PACKAGE OPTION ADDENDUM www.ti.
PAGE 17
PACKAGE OPTION ADDENDUM www.ti.com (4) 1-Nov-2013 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
PAGE 18
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-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 LMC6762AIMX SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1 LMC6762AIMX/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1 LMC6762BIMX SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.
PAGE 19
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMC6762AIMX SOIC D 8 2500 367.0 367.0 35.0 LMC6762AIMX/NOPB SOIC D 8 2500 367.0 367.0 35.0 LMC6762BIMX SOIC D 8 2500 367.0 367.0 35.0 LMC6762BIMX/NOPB SOIC D 8 2500 367.0 367.0 35.
PAGE 20
PAGE 21
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.