Product Folder Sample & Buy Support & Community Tools & Software Technical Documents LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 LMV7219 7-ns 2.7-V to 5-V Comparator with Rail-to-Rail Output 1 Features 3 Description • The LMV7219 is a low-power, high-speed comparator with internal hysteresis. The LMV7219 operating voltage ranges from 2.7 V to 5 V with push-pull railto-rail output. This device achieves a 7-ns propagation delay while consuming only 1.1 mA of supply current at 5 V. 1 • • • • • • • • (VS = 5 V, TA = 25°C, Typical Values Unless Specified) Propagation Delay 7 ns Low Supply Current 1.1 mA Input Common Mode Voltage Range Extends 200 mv Below Ground Ideal for 2.7-V and 5-V Single Supply Applications Internal Hysteresis Ensures Clean Switching Fast Rise and Fall Time 1.3 ns Available in Space-saving Packages: SC-70 and SOT-23 Supports 105°C PCB Temperature The LMV7219 inputs have a common mode voltage range that extends 200 mV below ground, allowing ground sensing. The internal hysteresis ensures clean output transitions even with slow-moving inputs signals. The LMV7219 is available in the SC-70 and SOT-23 packages, which are ideal for systems where small size and low power are critical. Device Information(1) 2 Applications • • • • • • • Portable and Battery-powered Systems Scanners Set Top Boxes High Speed Differential Line Receiver Window Comparators Zero-crossing Detectors High-speed Sampling Circuits PART NUMBER LMV7219 PACKAGE BODY SIZE (NOM) SC-70 (5) 2.00 mm × 1.25 mm SOT-23 (5) 2.88 mm × 1.60 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Typical Application 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 6.7 4 4 4 4 5 6 8 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information ................................................. Electrical Characteristics 2.7 V ................................ Electrical Characteristics 5 V ................................... Typical Performance Characteristics ........................ Detailed Description ............................................ 11 7.1 Overview ................................................................. 11 7.2 Functional Block Diagram ....................................... 11 7.3 Feature Description................................................. 11 7.4 Device Functional Modes........................................ 11 8 Application and Implementation ........................ 12 8.1 Application Information............................................ 12 8.2 Typical Application ................................................. 12 9 Power Supply Recommendations...................... 16 10 Layout................................................................... 16 10.1 Layout Guidelines ................................................. 16 10.2 Layout Example .................................................... 17 11 Device and Documentation Support ................. 18 11.1 11.2 11.3 11.4 11.5 Documentation Support ........................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ 18 18 18 18 18 12 Mechanical, Packaging, and Orderable Information ........................................................... 18 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision H (April 2016) to Revision I Page • Added Supports 105°C PCB Temperature to Features List................................................................................................... 1 • Changed Operating Temperature to Ambient Temperature .................................................................................................. 4 • Added Junction Temperature of 125 °C ................................................................................................................................. 4 • Added PCB Temperature of 105 °C ...................................................................................................................................... 4 • Added TPCB ≤ 105°C throughout Electrical Tables ................................................................................................................ 5 Changes from Revision G (January 2015) to Revision H Page • Changed "Infrared or Convection (20 sec)" from 235 °C ....................................................................................................... 4 • Added thermal data for SOT23 and SC70 packages ............................................................................................................ 4 Changes from Revision F (April 2013) to Revision G Page • Added, updated, or renamed the following sections: Device Information Table, Pin Configurations and Functions; Specifications; Application and Implementation; Power Supply Recommendations; Layout; Device and Documentation Support; Mechanical, Packaging, and Ordering Information ........................................................................ 1 • Changed from "transient response" to "eliminate possible output chatter" in Circuit Layout and Bypassing ..................... 16 Changes from Revision E (March 2013) to Revision F • 2 Page Changed layout of National Data Sheet to TI format ............................................................................................................. 1 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 LMV7219 www.ti.com SNOS458I – APRIL 2000 – REVISED JUNE 2016 5 Pin Configuration and Functions 5-Pin SC-70 and SOT-23 Packages DCK and DBV (Top View) Pin Functions PIN I/O DESCRIPTION NUMBER NAME 1 OUT O Output 2 V- I Negative Supply 3 +IN I Non-inverting input 4 -IN I Inverting input 5 V+ I Positive Supply Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 3 LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) (2) MIN MAX Differential input voltage See (3) Output short circuit duration − + UNIT ± Supply Voltage Supply voltage (V - V ) 5.5 V 260 °C 260 (lead temp) °C (V+) + 0.4 (V−) − 0.4 V Current at input pin (4) ±10 mA Maximum junction temperature 150 °C 150 °C Infrared or Convection (20 sec) Soldering information Wave Soldering (10 sec) Voltage at input/output pins −65 Storage temperature (1) (2) (3) (4) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not ensured. For ensured specifications and the test conditions, see the Electrical characteristics. If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150°C. Output currents in excess of ±30mA over long term may adversely affect reliability. Limiting input pin current is only necessary for input voltages that exceed absolute maximum input voltage ratings. 6.2 ESD Ratings VALUE (1) (2) Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 Electrostatic discharge V(ESD) (1) UNIT ±2000 Charged-device model (CDM), per JEDEC specification JESD22-C101 (2) V ±150 JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 500-V HBM is possible with the necessary precautions. Pins listed as ±2000 V may actually have higher performance. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 250-V CDM is possible with the necessary precautions. Pins listed as ±150 V may actually have higher performance. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT − Supply voltages (V - V ) 2.7 5 V Ambient Temperature (1) −40 +85 °C Junction Temperature 125 °C PCB Temperature 105 °C + (1) The maximum power dissipation is a function of TJ(MAX), RθJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) - TA)/RθJA. All numbers apply for packages soldered directly into a PC board. 6.4 Thermal Information THERMAL METRIC (1) LMV7219 LMV7219 DBV (SOT23) DCK (SC70) UNIT 5 PINS 5 PINS RθJA Junction-to-ambient thermal resistance 209 296 °C/W RθJC(top) Junction-to-case (top) thermal resistance 170 132 °C/W RθJB Junction-to-board thermal resistance 68 76 °C/W ψJT Junction-to-top characterization parameter 52 8.6 °C/W (1) 4 For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 LMV7219 www.ti.com SNOS458I – APRIL 2000 – REVISED JUNE 2016 Thermal Information (continued) THERMAL METRIC (1) LMV7219 LMV7219 DBV (SOT23) DCK (SC70) 5 PINS 5 PINS UNIT ψJB Junction-to-board characterization parameter 68 75 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance N/A N/A °C/W 6.5 Electrical Characteristics 2.7 V Unless otherwise specified, all limits ensured for TJ = 25°C, VCM = V+/2, V+ = 2.7 V, V− = 0 V, CL = 10 pF and RL > 1MΩ to V−. PARAMETER TEST CONDITIONS VOS Input offset voltage IB Input bias current IOS Input offset current CMRR Common mode rejection ratio 0 V < VCM < 1.50 V PSRR Power supply rejection ratio V+ = 2.7 V to 5 V MIN 1 6 8 450 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C 50 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C VO dB VCC −1 VCC −0.4 VCC −0.15 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C Sourcing, VO = 0 V (3) 20 (3) 20 IS Supply current No Load VHYST Input hysteresis voltage See (4) 7 VTRIP Input referred positive trip point (see Figure 19) 3 0.9 (1) (2) (3) (4) 50 mV 150 Output short circuit current + 200 300 ISC Sinking, VO = 2.7 V V VCC −0.02 15 IL = −0.4 mA, VID = −500 mV V VCC −0.22 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C Output swing low −0.1 0 130 IL = −4 mA, VID = −500 mV nA VCC −1.3 VCC −0.05 IL = 0.4 mA, VID = 500 mV nA 85 55 VCC −0.3 Output swing high mV dB 55 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C UNIT 85 −0.2 IL = 4 mA, VID = 500 mV 200 400 VCC −1.2 CMRR > 50 dB 950 2000 65 Input common-voltage range MAX (2) −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C 62 VCM TYP (1) −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C mA 1.6 2.2 mA mV 8 mV Typical Values represent the most likely parametric norm. All limits are specified by testing or statistical analysis. Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150°C. Output currents in excess of ±30mA over long term may adversely affect reliability. The LMV7219 comparator has internal hysteresis. The trip points are the input voltage needed to change the output state in each direction. The offset voltage is defined as the average of Vtrip+ and Vtrip−, while the hysteresis voltage is the difference of these two. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 5 LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 www.ti.com Electrical Characteristics 2.7 V (continued) Unless otherwise specified, all limits ensured for TJ = 25°C, VCM = V+/2, V+ = 2.7 V, V− = 0 V, CL = 10 pF and RL > 1MΩ to V−. PARAMETER VTRIP − tPD TEST CONDITIONS Input referred negative trip point (see Figure 19) Propagation delay TYP (1) −8 −4 Overdrive = 5 mV, VCM = 0V (5) 12 Overdrive = 15 mV, VCM = 0 V (5) 11 (5) 10 Overdrive = 50 mV, VCM = 0 V tSKEW Propagation delay skew See (6) tr Output rise time tf Output fall time (5) (6) MIN MAX (2) UNIT mV ns 20 1 ns 10% to 90% 2.5 ns 90% to 10% 2 ns Propagation delay measurements made with 100 mV steps. Overdrive is measured relative to VTrip. Propagation Delay Skew is defined as absolute value of the difference between tPDLH and tPDHL. 6.6 Electrical Characteristics 5 V Unless otherwise specified, all limits ensured for TJ = 25°C, VCM = V+/2, V+ = 5 V, V− = 0 V, CL = 10 pF and RL > 1 MΩ to V−. PARAMETER TEST CONDITIONS VOS Input offset voltage IB Input bias current IOS Input offset current CMRR Common mode rejection ratio 0 V < VCM < 3.8 V PSRR Power supply rejection ratio V+ = 2.7 V to 5 V MIN 1 6 8 500 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C 50 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C CMRR > 50 dB Output swing high IL = 0.4 mA, VID = 500 mV VO IL = −4 mA, VID = −500 mV Output swing low IL = −0.4 mA, VID = −500 mV VCC −1 V (1) (2) 6 −0.1 0 V VCC −0.13 VCC −0.3 V VCC −0.02 VCC −0.15 80 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C 180 280 10 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C nA dB VCC −1.3 VCC −0.05 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C nA 85 55 VCC −0.2 mV dB 55 −0.2 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C UNIT 85 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C IL = 4 mA, VID = 500 mV 200 400 VCC −1.2 −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C 950 2000 65 VCM MAX (2) −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C 65 Input common-mode voltage range TYP (1) 50 mV 150 Typical Values represent the most likely parametric norm. All limits are specified by testing or statistical analysis. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 LMV7219 www.ti.com SNOS458I – APRIL 2000 – REVISED JUNE 2016 Electrical Characteristics 5 V (continued) Unless otherwise specified, all limits ensured for TJ = 25°C, VCM = V+/2, V+ = 5 V, V− = 0 V, CL = 10 pF and RL > 1 MΩ to V−. PARAMETER TEST CONDITIONS Sourcing, VO = 0 V (3) ISC Output short circuit current −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C MIN TYP (1) 30 68 Sinking, VO = 5 V −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C 20 1.1 Supply current No Load VHYST Input hysteresis voltage See (4) 7.5 VTrip+ Input referred positive trip point (See Figure 19) 3.5 VTrip− Input referred negative trip point (See Figure 19) tPD Propagation delay −40°C ≤ TJ ≤ +85°C and TPCB ≤ 105°C −8 −4 9 20 19 Output rise time tf Output fall time mV mV 7 tr mA mV 8 8 See (6) (5) (6) 2.4 Overdrive = 50 mV, VCM = 0 V (5) Overdrive = 15 mV, VCM = 0 V Propagation delay skew (4) 1.8 (5) tSKEW (3) mA 65 IS Overdrive = 5 mV, VCM = 0 V (5) UNIT 20 30 (3) MAX (2) ns 0.4 ns 10% to 90% 1.3 ns 90% to 10% 1.25 ns Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150°C. Output currents in excess of ±30mA over long term may adversely affect reliability. The LMV7219 comparator has internal hysteresis. The trip points are the input voltage needed to change the output state in each direction. The offset voltage is defined as the average of Vtrip+ and Vtrip−, while the hysteresis voltage is the difference of these two. Propagation delay measurements made with 100 mV steps. Overdrive is measured relative to VTrip. Propagation Delay Skew is defined as absolute value of the difference between tPDLH and tPDHL. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 7 LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 www.ti.com 6.7 Typical Performance Characteristics Unless otherwise specified, VS = 5 V, CL = 10 pF, TA = 25°C Figure 1. Supply Current vs. Supply Voltage Figure 2. VOS vs. Supply Voltage VS = 2.7 V Figure 3. Input Offset and Trip Voltage vs. Supply Voltage VS = 5 V VS = 2.7 V Figure 5. Sourcing Current vs. Output Voltage 8 Figure 4. Sourcing Current vs. Output Voltage Figure 6. Sinking Current vs. Output Voltage Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 LMV7219 www.ti.com SNOS458I – APRIL 2000 – REVISED JUNE 2016 Typical Performance Characteristics (continued) Unless otherwise specified, VS = 5 V, CL = 10 pF, TA = 25°C VS = 2.7 V VOD = 15 mV VS = 5 V Figure 7. Sinking Current vs. Output Voltage VS = 5V VOD = 15 mV Figure 8. Propagation Delay vs. Temperature VS = 5 V VOD = 15 mV Figure 9. Propagation Delay vs. Temperature Figure 10. Propagation Delay vs. Capacitive Load VS = 2.7 V CL = 10 pF VOD = 15 mV Figure 11. Propagation Delay vs. Input Overdrive Figure 12. Propagation Delay (tPD−) Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 9 LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 www.ti.com Typical Performance Characteristics (continued) Unless otherwise specified, VS = 5 V, CL = 10 pF, TA = 25°C VS = 2.7 V CL = 10 pF VOD = 15 mV Figure 13. Propagation Delay (tPD+) 10 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 LMV7219 www.ti.com SNOS458I – APRIL 2000 – REVISED JUNE 2016 7 Detailed Description 7.1 Overview LMV7219 is a single supply comparator with internal hysteresis, 7 ns of propagation delay and only 1.1 mA of supply current. The LMV7219 has a typical input common mode voltage range of −0.2 V below the ground to 1 V below Vcc. The differential input stage is a pair of PNP transistors, therefore, the input bias current flows out of the device. If either of the input signals falls below the negative common mode limit, the parasitic PN junction formed by the substrate and the base of the PNP will turn on, resulting in an increase of input bias current. 7.2 Functional Block Diagram 7.3 Feature Description If one of the inputs goes above the positive common mode limit, the output will still maintain the correct logic level as long as the other input stays within the common mode range. However, the propagation delay will increase. When both inputs are outside the common mode voltage range, current saturation occurs in the input stage, and the output becomes unpredictable. 7.4 Device Functional Modes The propagation delay does not increase significantly with large differential input voltages. However, large differential voltages greater than the supply voltage should be avoided to prevent damages to the input stage. The LMV7219 has a push-pull output. When the output switches, there is a direct path between VCC and ground, causing high output sinking or sourcing current during the transition. After the transition, the output current decreases and the supply current settles back to about 1.1 mA at 5 V, thus conserving power consumption. Most high-speed comparators oscillate when the voltage of one of the inputs is close to or equal to the voltage on the other input due to noise or undesirable feedback. The LMV7219 has 7 mV of internal hysteresis to counter parasitic effects and noise. The hysteresis does not change significantly with the supply voltages and the common mode input voltages as reflected in the specification table. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 11 LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 www.ti.com 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information The following section explains in detail how to manipulate the hysteresis voltage of the LMV7219. Detailed expressions are provided along with practical considerations for designing hysteresis. 8.2 Typical Application Figure 14 shows the typical method of adding external hysteresis to a comparator. The positive feedback is responsible for shifting the comparator trip point depending on the state of the output. Figure 14. Additional Hysteresis 8.2.1 Design Requirements The internal hysteresis creates two trip points, one for the rising input voltage and one for the falling input voltage, as shown in Figure 19. The difference between the trip points is the hysteresis. With internal hysteresis, when the comparator's input voltages are equal, the hysteresis effectively causes one comparator-input voltage to move quickly past the other, thus taking the input out of the region where oscillation occurs. Standard comparators require hysteresis to be added with external resistors. The fixed internal hysteresis eliminates these resistors. 8.2.2 Detailed Design Procedure 8.2.2.1 Additional Hysteresis If additional hysteresis is desired, this can be done with the addition of three resistors using positive feedback, as shown in Figure 14. The positive feedback method slows the comparator response time. Calculate the resistor values as follows: 1. Select R3. The current through R3 should be greater than the input bias current to minimize errors. The current through R3 (IF) at the trip point is (VREF - VOUT) /R3. Consider the two possible output states when solving for R3, and use the smaller of the two resulting resistor values. The two formulas are: R3 = VREF/IF (1) When VOUT = 0: 12 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 LMV7219 www.ti.com SNOS458I – APRIL 2000 – REVISED JUNE 2016 Typical Application (continued) R3 = VCC - VREF /IF (2) When VOUT = VCC: 2. Choose a hysteresis band required (VHB). 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. Beyond that, the impedance of R3 is low enough to affect the bias string and adjustment of R1 may be also required. 8.2.2.2 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 0 V, the comparator's output Changes State. Figure 15. Zero-Crossing Detector 8.2.2.3 Threshold Detector Instead of tying the inverting input to 0 V, the inverting input can be tied to a reference voltage. The non-inverting input is connected to the input. As the input passes the VREF threshold, the comparator's output changes state. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 13 LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 www.ti.com Typical Application (continued) Figure 16. Threshold Detector 8.2.2.4 Crystal Oscillator A simple crystal oscillator using the LMV7219 is shown in Figure 17. 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. The output duty cycle for this circuit is roughly 50%, but it is affected by resistor tolerances and to a lesser extent by the comparator offset. Figure 17. Crystal Oscillator 8.2.2.5 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. 14 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 LMV7219 www.ti.com SNOS458I – APRIL 2000 – REVISED JUNE 2016 Typical Application (continued) Figure 18. IR Receiver 8.2.3 Application Curve Figure 19. Input and Output Waveforms, Non-Inverting Input Varied Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 15 LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 www.ti.com 9 Power Supply Recommendations The LMV7219 can operate off a single supply or with dual supplies as long as the input CM voltage range (VCM) has the required headroom to the positive rail V+. The input range extends to slightly below V- voltage. Supplies should be decoupled with low inductance, often ceramic, capacitors to ground less than 0.5 inches from the device pins. The use of ground plane is recommended, and as in most high speed devices, it is advisable to remove ground plane close to device sensitive pins such as the inputs. 10 Layout 10.1 Layout Guidelines 10.1.1 Circuit Layout and Bypassing The LMV7219 requires high-speed layout. Follow these layout guidelines: 1. Power supply bypassing is critical, and will improve stability and eliminate possible output chatter. A decoupling capacitor such as 0.1-µF ceramic should be placed as close as possible to V+ pin (and to V- pin if used with dual supplies) as shown in Figure 20. An additional 2.2-µF tantalum capacitor may be required for extra noise reduction. 2. Keep all leads short to reduce stray capacitance and lead inductance. It will also minimize unwanted parasitic feedback around the comparator. 3. The device should be soldered directly to the PC board instead of using a socket. 4. Use a PC board with a good, unbroken low inductance ground plane as shown in Figure 20. Make sure ground paths are low-impedance, especially were heavier currents are flowing. 5. Input traces should be kept away from output traces. This can be achieved by running a topside ground plane between the output and inputs. 6. Run the ground trace under the device up to the bypass capacitor to shield the inputs from the outputs. 7. To prevent parasitic feedback when input signals are slow-moving, a small capacitor of 1000 pF or less can be placed between the inputs. It can also help eliminate oscillations in the transition region. However, this capacitor can cause some degradation to tpd when the source impedance is low. 16 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 LMV7219 www.ti.com SNOS458I – APRIL 2000 – REVISED JUNE 2016 10.2 Layout Example Figure 20. SOT-23 Board Layout Example Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 17 LMV7219 SNOS458I – APRIL 2000 – REVISED JUNE 2016 www.ti.com 11 Device and Documentation Support 11.1 Documentation Support 11.1.1 Related Documentation For related documentation, see the following: • Absolute Maximum Ratings for Soldering (SNOA549) • Semiconductor and IC Package Thermal Metrics (SPRA953) 11.2 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 11.3 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 11.4 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 11.5 Electrostatic Discharge Caution 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. 12 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 18 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LMV7219 PACKAGE OPTION ADDENDUM www.ti.com 27-May-2016 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) LMV7219M5 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 85 C14A LMV7219M5/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 C14A LMV7219M5X NRND SOT-23 DBV 5 3000 TBD Call TI Call TI -40 to 85 C14A LMV7219M5X/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 C14A LMV7219M7 NRND SC70 DCK 5 1000 TBD Call TI Call TI -40 to 85 C15 LMV7219M7/NOPB ACTIVE SC70 DCK 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 C15 LMV7219M7X NRND SC70 DCK 5 3000 TBD Call TI Call TI -40 to 85 C15 LMV7219M7X/NOPB ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 C15 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. 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. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com 27-May-2016 (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. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. 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Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 27-May-2016 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 3.2 3.2 1.4 4.0 8.0 Q3 8.4 3.2 3.2 1.4 4.0 8.0 Q3 8.4 3.2 3.2 1.4 4.0 8.0 Q3 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 1000 178.0 8.4 2.25 2.45 1.2 4.0 8.0 Q3 5 1000 178.0 8.4 2.25 2.45 1.2 4.0 8.0 Q3 5 3000 178.0 8.4 2.25 2.45 1.2 4.0 8.0 Q3 5 3000 178.0 8.4 2.25 2.45 1.2 4.0 8.0 Q3 Pack Materials-Page 1 W Pin1 (mm) Quadrant PACKAGE MATERIALS INFORMATION www.ti.com 27-May-2016 *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 35.0 LMV7219M7X SC70 DCK 5 3000 210.0 185.0 35.0 LMV7219M7X/NOPB SC70 DCK 5 3000 210.0 185.0 35.0 Pack Materials-Page 2 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. 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