Datasheet

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LMV7219

www.ti.com

SNOS458F –APRIL 2000–REVISED MARCH 2013

LMV7219 7 nsec, 2.7V to 5V Comparator with Rail-to-Rail Output

Check for Samples: LMV7219

FEATURES

• High Speed Differential Line Receiver

• Window Comparators

• (V

= 5V, T

= 25°C, Typical Values Unless

Specified)

• Zero-crossing Detectors

• Propagation Delay 7ns

• High-speed Sampling Circuits

• Low Supply Current 1.1mA

DESCRIPTION

• Input Common Mode Voltage Range Extends

The LMV7219 is a low-power, high-speed comparator

200mv Below Ground

with internal hysteresis. The LMV7219 operating

• Ideal for 2.7V and 5V Single Supply

voltage ranges from 2.7V to 5V with push/pull rail-to-

Applications

rail output. This device achieves a 7ns propagation

• Internal Hysteresis Ensures Clean Switching

delay while consuming only 1.1mA of supply current

at 5V.

• Fast Rise and Fall Time 1.3ns

The LMV7219 inputs have a common mode voltage

• Available in Space-saving Packages: SC70 and

range that extends 200mV below ground, allowing

SOT-23

ground sensing. The internal hysteresis ensures

clean output transitions even with slow-moving inputs

APPLICATIONS

signals.

• Portable and Battery-powered Systems

The LMV7219 is available in the SC70 and SOT-23

• Scanners

packages, which are ideal for systems where small

• Set Top Boxes

size and low power are critical.

Figure 1. Typical Application

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)

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LMV7219 www.ti.com SNOS458F – APRIL 2000 – REVISED MARCH 2013 LMV7219 7 nsec, 2.7V to 5V Comparator with Rail-to-Rail Output Check for Samples: LMV7219 FEATURES 1 • 2 • • • • • • • (VS = 5V, TA = 25°C, Typical Values Unless Specified) Propagation Delay 7ns Low Supply Current 1.1mA Input Common Mode Voltage Range Extends 200mv Below Ground Ideal for 2.7V and 5V Single Supply Applications Internal Hysteresis Ensures Clean Switching Fast Rise and Fall Time 1.
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LMV7219 SNOS458F – APRIL 2000 – REVISED MARCH 2013 www.ti.com Top View Figure 2. Connection Diagram SC70 and SOT-23 Packages See Package Numbers DCK0005A and DBV0005A Figure 3. Simplified Schematic 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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LMV7219 www.ti.com SNOS458F – APRIL 2000 – REVISED MARCH 2013 Absolute Maximum Ratings (1) (2) ESD Tolerance (3) Machine Body 150V Human Model Body 2000V Differential Input Voltage ± Supply Voltage See (4) Output Short Circuit Duration + − Supply Voltage (V - V ) 5.5V Soldering Information Infrared or Convection (20 sec) 235°C Wave Soldering (10 sec) 260°C (lead temp) (V+) + 0.4V (V−) − 0.
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LMV7219 SNOS458F – APRIL 2000 – REVISED MARCH 2013 www.ti.com 2.7V Electrical Characteristics (continued) Unless otherwise specified, all limits ensured for TJ = 25°C, VCM = V+/2, V+ = 2.7V, V− = 0V, CL = 10 pF and RL > 1 MΩ to V−. Boldface limits apply at the temperature extremes. Typ (1) Limit (2) IL = 4 mA, VID = 500 mV VCC −0.22 VCC −0.3 VCC −0.4 IL = 0.4 mA, VID = 500 mV VCC −0.02 VCC −0.05 VCC −0.15 IL = −4 mA, VID = −500 mV 130 200 300 IL = −0.
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LMV7219 www.ti.com SNOS458F – APRIL 2000 – REVISED MARCH 2013 5V Electrical Characteristics (continued) Unless otherwise specified, all limits ensured for TJ = 25°C, VCM = V+/2, V+ = 5V, V− = 0V, CL = 10 pF and RL > 1 MΩ to V−. Boldface limits apply at the temperature extremes. Typ (1) Limit (2) Units VCC −1 VCC −1.2 VCC −1.3 V min −0.2 −0.1 0 V max IL = 4 mA, VID = 500 mV VCC −0.13 VCC −0.2 VCC −0.3 IL = 0.4 mA, VID = 500 mV VCC −0.02 VCC −0.05 VCC −0.
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LMV7219 SNOS458F – APRIL 2000 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics Unless otherwise specified, VS = 5V, CL = 10 pF, TA = 25°C 6 Supply Current vs. Supply Voltage VOS vs. Supply Voltage Figure 4. Figure 5. Input Offset and Trip Voltage vs. Supply Voltage Sourcing Current vs. Output Voltage Figure 6. Figure 7. Sourcing Current vs. Output Voltage Sinking Current vs. Output Voltage Figure 8. Figure 9.
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LMV7219 www.ti.com SNOS458F – APRIL 2000 – REVISED MARCH 2013 Typical Performance Characteristics (continued) Unless otherwise specified, VS = 5V, CL = 10 pF, TA = 25°C Sinking Current vs. Output Voltage Propagation Delay vs. Temperature (VS = 2.7V, VOD = 15 mV) Figure 10. Figure 11. Propagation Delay vs. Temperature (VS = 5V, VOD = 15 mV) Propagation Delay vs. Capacitive Load (VS = 5V, VOD = 15 mV) Figure 12. Figure 13. Propagation Delay vs. Input Overdrive Propagation Delay (tPD−) Figure 14.
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LMV7219 SNOS458F – APRIL 2000 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Unless otherwise specified, VS = 5V, CL = 10 pF, TA = 25°C Propagation Delay (tPD+) Figure 16.
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LMV7219 www.ti.com SNOS458F – APRIL 2000 – REVISED MARCH 2013 APPLICATION SECTION LMV7219 is a single supply comparator with internal hysteresis, 7ns of propagation delay and only 1.1mA of supply current. The LMV7219 has a typical input common mode voltage range of −0.2V below the ground to 1V below Vcc. The differential input stage is a pair of PNP transistors, therefore, the input bias current flows out of the device.
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LMV7219 SNOS458F – APRIL 2000 – REVISED MARCH 2013 www.ti.com 3) Calculate R1, where R1 = R3 X(VHB/VCC) 4) Choose the trip point for VIN rising. This is the threshold voltage (VTHR) at which the comparator switches from low to high as VIN rises about the trip point. 5) Calculate R2 as follows: (3) 6) Verify the trip voltage and hysteresis as follows: (4) This method is recommended for additional hysteresis of up to a few hundred millivolts.
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LMV7219 www.ti.com SNOS458F – APRIL 2000 – REVISED MARCH 2013 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. Figure 19. Zero-Crossing Detector Threshold Detector Instead of tying the inverting input to 0V, the inverting input can be tied to a reference voltage. The non-inverting input is connected to the input.
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LMV7219 SNOS458F – APRIL 2000 – REVISED MARCH 2013 www.ti.com IR Receiver The LMV7219 is an ideal candidate to be used as an infrared receiver. The infrared photo diode creates a current relative to the amount of infrared light present. The current creates a voltage across RD. When this voltage level cross the voltage applied by the voltage divider to the inverting input, the output transitions. Figure 22.
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LMV7219 www.ti.com SNOS458F – APRIL 2000 – 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 (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. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line.
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PACKAGE MATERIALS INFORMATION www.ti.com 21-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) LMV7219M5 SOT-23 DBV 5 1000 178.0 8.4 LMV7219M5/NOPB SOT-23 DBV 5 1000 178.0 LMV7219M5X SOT-23 DBV 5 3000 178.0 LMV7219M5X/NOPB SOT-23 DBV 5 3000 LMV7219M7 SC70 DCK 5 LMV7219M7/NOPB SC70 DCK LMV7219M7X SC70 DCK LMV7219M7X/NOPB SC70 DCK 3.
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PACKAGE MATERIALS INFORMATION www.ti.com 21-Mar-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMV7219M5 SOT-23 DBV 5 1000 210.0 185.0 35.0 LMV7219M5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LMV7219M5X SOT-23 DBV 5 3000 210.0 185.0 35.0 LMV7219M5X/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LMV7219M7 SC70 DCK 5 1000 210.0 185.0 35.0 LMV7219M7/NOPB SC70 DCK 5 1000 210.0 185.0 35.
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