Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Comparator Multi-purpose Push pull, Rail-to-rail SOT 23 5

LMV7235, LMV7239

www.ti.com

SNOS532M –SEPTEMBER 2000–REVISED FEBRUARY 2013

LMV7235/LMV7239/LMV7239Q 75 nsec, Ultra Low Power, Low Voltage, Rail-to-Rail Input

Comparator with Open-Drain/Push-Pull Output

Check for Samples: LMV7235, LMV7239

FEATURES

DESCRIPTION

The LMV7235/LMV7239/LMV7239Q are ultra low

• (V

= 5V, T

= 25°C

power, low voltage, 75 nsec comparators. They are

• Typical values unless otherwise specified)

guaranteed to operate over the full supply voltage

• Propagation delay 75 nsec

range of 2.7V to 5.5V. These devices achieve a 75

nsec propagation delay while consuming only 65µA

• Low supply current 65µA

of supply current at 5V.

• Rail-to-Rail input

The LMV7235/LMV7239/LMV7239Q have a greater

• Open drain and push-pull output

than rail-to-rail common mode voltage range. The

• Ideal for 2.7V and 5V single supply

input common mode voltage range extends 200mV

applications

below ground and 200mV above supply, allowing

• Available in space saving packages

both ground and supply sensing.

– 5-pin SOT-23

The LMV7235 features an open drain output. By

connecting an external resistor, the output of the

– 5-pin SC70

comparator can be used as a level shifter.

• LMV7239Q is an automotive grade product

that is AECQ grade 1 qualified and is

The LMV7239/LMV7239Q features a push-pull output

manufactured on an automotive grade flow.

stage. This feature allows operation without the need

of an external pull-up resistor.

APPLICATIONS

The LMV7235/LMV7239/LMV7239Q are available in

the 5-Pin SC70 and 5-Pin SOT-23 packages, which

• Portable and battery powered systems

are ideal for systems where small size and low power

• Scanners

is critical.

• Set top boxes

• High speed differential line receiver

• Window comparators

• Zero-crossing detectors

• High speed sampling circuits

• Automotive

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 (22 pages)

PAGE 1
LMV7235, LMV7239 www.ti.com SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 LMV7235/LMV7239/LMV7239Q 75 nsec, Ultra Low Power, Low Voltage, Rail-to-Rail Input Comparator with Open-Drain/Push-Pull Output Check for Samples: LMV7235, LMV7239 FEATURES DESCRIPTION • • • • • • • The LMV7235/LMV7239/LMV7239Q are ultra low power, low voltage, 75 nsec comparators. They are guaranteed to operate over the full supply voltage range of 2.7V to 5.5V.
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LMV7235, LMV7239 SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 www.ti.com Typical Application VCC 100K Crystal 100K VOUT 0.1uF 100K Figure 1. Crystal Oscillator Connection Diagram 1 5 VOUT V- Non-Inverting Input 2 3 V+ SC70 SOT-23 4 Inverting Input Figure 2.
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LMV7235, LMV7239 www.ti.com SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 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.
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LMV7235, LMV7239 SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 www.ti.com 2.7V Electrical Characteristics (continued) Unless otherwise specified, all limits guaranteed for TA = 25°C, VCM = V+/2, V+ = 2.7V, V− = 0V−. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min (1) Typ (2) Max (1) Units CMRR Common Mode Rejection Ratio 0V < VCM < 2.7V PSRR Power Supply Rejection Ratio V+ = 2.7V to 5V 65 85 VCM Input Common-Mode Voltage Range CMRR > 50dB V− −0.
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LMV7235, LMV7239 www.ti.com SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 5V Electrical Characteristics Unless otherwise specified, all limits guaranteed for TA = 25°C, VCM = V+/2, V+ = 5V, V− = 0V. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min (1) Typ 30 400 600 nA 5 200 400 nA Input Bias Current IOS Input Offset Current CMRR Common Mode Rejection Ratio 0V < VCM < 5V 52 67 PSRR Power Supply Rejection Ratio V+ = 2.
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LMV7235, LMV7239 SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (Unless otherwise specified, VS = 5V, CL = 10pF, TA = 25°C). Supply Current vs. Supply Voltage Sourcing Current vs. Output Voltage 100 -40°C 25°C 85°C 125°C 100 VS = 5V 80 10 ISOURCE (mA) SUPPLY CURRENT ( A) 120 60 40 1 20 0 0 1 2 3 4 SUPPLY VOLTAGE (V) .1 .01 5 .1 + OUTPUT VOLTAGE REFERENCED TO V (V) Figure 3. Figure 4. Sourcing Current vs.
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LMV7235, LMV7239 www.ti.com SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) (Unless otherwise specified, VS = 5V, CL = 10pF, TA = 25°C). Sinking Current vs. Output Voltage Input Bias Current vs. Input Voltage 50 100 40 INPUT BIAS CURRENT (nA) VS = 2.7V ISINK (mA) 10 1 VS = 5V 30 IBIAS+ 20 10 0 -10 IBIAS- -20 -30 -40 .1 .01 .1 1 -50 -0.2 10 2 1 OUTPUT VOLTAGE REFERENCED TO GND (V) Figure 7. Input Bias Current vs.
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LMV7235, LMV7239 SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) (Unless otherwise specified, VS = 5V, CL = 10pF, TA = 25°C). Propagation Delay vs. Capacitive Load Propagation Delay vs. Input Overdrive 100 VS= 5V VOD=20mV PROPAGATION DELAY (ns) PROPAGATION DELAY (ns) 96 94 Falling Edge 92 90 VS= 2.7V CLOAD=15pF 95 Rising Edge 90 85 Rising Edge Falling Edge 88 80 0 20 40 60 80 CAPACITANCE (pF) 100 20 Figure 13. Figure 14.
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LMV7235, LMV7239 www.ti.com SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 APPLICATION INFORMATION The LMV7235/LMV7239/LMV7239Q are single supply comparators with 75ns of propagation delay and only 65µA of supply current. The LMV7235/LMV7239/LMV7239Q are rail-to-rail input and output. The typical input common mode voltage range of −0.2V below the ground to 0.2V above the supply.
PAGE 10
LMV7235, LMV7239 SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 www.ti.com When VIN is greater than VA (VIN > VA), the output voltage is low, very close to ground. In this case the three network resistors can be presented as R2 || R3 in series with R1.
PAGE 11
LMV7235, LMV7239 www.ti.com SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 Figure 19. Non-Inverting Comparator with Hysteresis ZERO-CROSSING DETECTOR The inverting input is connected to ground and the non-inverting input is connected to 100mVp-p signal. As the signal at the non-inverting input crosses 0V, the comparator's output changes state. + OUT - Figure 20.
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LMV7235, LMV7239 SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 www.ti.com CRYSTAL OSCILLATOR A simple crystal oscillator using the LMV7239 is shown below. Resistors R1 and R2 set the bias point at the comparator's non-inverting input. Resistors R3, R4 and C1 sets the inverting input node at an appropriate DC average level based on the output. The crystal's path provides resonant positive feedback and stable oscillation occurs.
PAGE 13
LMV7235, LMV7239 www.ti.com SNOS532M – SEPTEMBER 2000 – REVISED FEBRUARY 2013 REVISION HISTORY Changes from Revision L (February 2013) to Revision M • 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 14-Mar-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) LMV7235M5 SOT-23 DBV 5 1000 178.0 8.4 LMV7235M5/NOPB SOT-23 DBV 5 1000 178.0 LMV7235M5X SOT-23 DBV 5 3000 178.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Mar-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMV7235M5 SOT-23 DBV 5 1000 210.0 185.0 35.0 LMV7235M5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LMV7235M5X SOT-23 DBV 5 3000 210.0 185.0 35.0 LMV7235M5X/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LMV7235M7 SC70 DCK 5 1000 210.0 185.0 35.0 LMV7235M7/NOPB SC70 DCK 5 1000 210.0 185.0 35.
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