Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Comparator Multi-purpose Open drain VSSOP 8

SM72375

www.ti.com

SNIS155D –NOVEMBER 2010–REVISED APRIL 2013

SM72375 SolarMagic Dual Micropower Rail-To-Rail Input CMOS Comparator with Open

Drain Output

Check for Samples: SM72375

FEATURES

DESCRIPTION

The SM72375 is an ultra low power dual comparator

• Renewable Energy Grade

with a maximum 10 μA/comparator power supply

(Typical Unless Otherwise Noted)

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

• Low Power Consumption (Max): I

= 10

supply voltages, with a minimum supply voltage of

μA/comp

2.7V.

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

The common mode voltage range of the SM72375

exceeds both the positive and negative supply rails, a

• Rail-to-Rail Input Common Mode Voltage

significant advantage in single supply applications.

Range

The open drain output of the SM72375 allows for

• Open Drain Output

wired-OR configurations. The open drain output also

• Short Circuit Protection: 40 mA

offers the advantage of allowing the output to be

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

• Propagation Delay (@V

= 5V, 100 mV

supply voltage of the SM72375.

Overdrive): 5 μs

• −40°C to 125°C Temperature Range

The SM72375 is targeted for systems where low

power consumption is the critical parameter. ensured

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

APPLICATIONS

performance makes this comparator ideal for battery-

• Metering Systems

powered applications.

• RC Timers

• Alarm and Monitoring Circuits

• Window Comparators, Multivibrators

Connection Diagram

Figure 1. 8-Pin VSSOP - Top View

Package Number DGK

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 (19 pages)

PAGE 1
SM72375 www.ti.com SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 SM72375 SolarMagic Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output Check for Samples: SM72375 FEATURES DESCRIPTION • The SM72375 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.
PAGE 2
SM72375 SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com Absolute Maximum Ratings (1) (2) ESD Tolerance (3) 1.5 kV Differential Input Voltage (V+)+0.3V to (V−)−0.3V Voltage at Input/Output Pin (V+)+0.3V to (V−)−0.
PAGE 3
SM72375 www.ti.com SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 2.7V Electrical Characteristics (continued) Unless otherwise specified, all limits ensured for TA = 25°C, V+ = 2.7V, V− = 0V, VCM = V+/2. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min (1) Typ (2) Max (1) Units VOL Output Voltage Low ILOAD = 2.5 mA 0.2 0.3 0.45 V IS Supply Current For Both Comparators 12 20 25 μA ILeakage Output Leakage Current VIN(+) = 0.
PAGE 4
SM72375 SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com AC Electrical Characteristics Unless otherwise specified, all limits ensured for TA = 25°C, V+ = 5V, V− = 0V, VCM = VO = V+/2. Boldface limits apply at the temperature extreme. Symbol Parameter 0.3 μs f = 10 kHz, CL = 50 pF (3) 10 mV 10 100 mV 4 tFALL Fall Time tPHL Propagation Delay (High to Low) V+ = 2.7V, f = 10 kHz, CL = 50 pF (3) f = 10 kHz, CL = 50 pF (3) V+ = 2.
PAGE 5
SM72375 www.ti.com SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 Typical Performance Characteristics + V = 5V, Single Supply, TA = 25°C unless otherwise specified Input Current vs. Common-Mode Voltage Input Current vs. Common-Mode Voltage Figure 2. Figure 3. Input Current vs. Common-Mode Voltage Input Current vs. Temperature Figure 4. Figure 5. ΔVOS vs ΔVCM, VS = 2.7V ΔVOS vs ΔVCM, VS = 5V Figure 6. Figure 7.
PAGE 6
SM72375 SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics (continued) + V = 5V, Single Supply, TA = 25°C unless otherwise specified 6 ΔVOS vs ΔVCM, VS = 15V Response Time for Overdrive (tPLH) Figure 8. Figure 9. Response Time for Overdrive (tPHL) Response Time for Overdrive (tPLH) Figure 10. Figure 11. Response Time for Overdrive (tPHL) Response Time for Overdrive (tPLH) Figure 12. Figure 13.
PAGE 7
SM72375 www.ti.com SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 Typical Performance Characteristics (continued) + V = 5V, Single Supply, TA = 25°C unless otherwise specified Response Time for Overdrive (tPHL) Response Time vs. Capacitive Load Figure 14. Figure 15. Supply Current vs. Supply Voltage (Output High) Supply Current vs.
PAGE 8
SM72375 SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics (continued) + V = 5V, Single Supply, TA = 25°C unless otherwise specified Output Voltage vs. Output Current (Sinking) Output Short Circuit Current vs.
PAGE 9
SM72375 www.ti.com SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 APPLICATION INFORMATION 1.0 INPUT COMMON-MODE VOLTAGE RANGE At supply voltages of 2.7V, 5V and 15V, the SM72375 has an input common-mode voltage range (CMVR) 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.
PAGE 10
SM72375 SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com 3.0 OUTPUT SHORT CIRCUIT CURRENT The SM72375 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.
PAGE 11
SM72375 www.ti.com SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 ONE-SHOT MULTIVIBRATOR Figure 27. 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 12
SM72375 SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com 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 30.
PAGE 13
SM72375 www.ti.com SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 Figure 31. Time Delay Generator Figure 32. 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 14
SM72375 SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision C (April 2013) to Revision D • 14 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
PAGE 15
PACKAGE OPTION ADDENDUM www.ti.
PAGE 16
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SM72375MM/NOPB VSSOP DGK 8 SM72375MME/NOPB VSSOP DGK SM72375MMX/NOPB VSSOP DGK SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 1000 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 8 250 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 8 3500 330.0 12.4 5.3 3.4 1.4 8.0 12.
PAGE 17
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) SM72375MM/NOPB VSSOP DGK 8 1000 210.0 185.0 35.0 SM72375MME/NOPB VSSOP DGK 8 250 210.0 185.0 35.0 SM72375MMX/NOPB VSSOP DGK 8 3500 367.0 367.0 35.
PAGE 18
PAGE 19
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.