Datasheet

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

PD L-H

PD H-L

1 10 100 1000

PROPAGATION DELAY (Ps)

= 1.8V

= 25°C

OVERDRIVE (mV)

0 1 2 3 4 5 6

100

200

300

400

500

600

700

800

900

SUPPLY CURRENT (nA)

SUPPLY VOLTAGE (V)

25°C

-40°C

85°C

= 0.8V

LPV7215

www.ti.com

SNOSAI6I –SEPTEMBER 2005–REVISED APRIL 2013

LPV7215Q Micropower, CMOS Input, RRIO, 1.8V, Push-Pull Output Comparator

Check for Samples: LPV7215

FEATURES

DESCRIPTION

The LPV7215Q is an ultra low-power comparator with

• (For V

= 1.8V, Typical Unless Otherwise

a typical power supply current of 580 nA. It has the

Noted)

best-in-class power supply current versus

• Ultra Low Power Consumption 580 nA

propagation delay performance available among TI's

• Wide Supply Voltage Range 1.8V to 5.5V

low-power comparators. The propagation delay is as

low as 4.5 microseconds with 100 mV overdrive at

• Propagation Delay 4.5 µs

1.8V supply.

• Push-Pull Output Current Drive @ 5V 19 mA

Designed to operate over a wide range of supply

• Temperature Range −40°C to 125°C

voltages, from 1.8V to 5.5V, with ensured operation

• Rail-to-Rail Input

at 1.8V, 2.7V and 5.0V, the LPV7215Q is ideal for

• Tiny 5-Pin SOT23 and SC70 Packages

use in a variety of battery-powered applications. With

rail-to-rail common mode voltage range, the

LPV7215Q is well suited for single-supply operation.

APPLICATIONS

Featuring a push-pull output stage, the LPV7215Q

• RC Timers

allows for operation with absolute minimum power

• Window Detectors

consumption when driving any capacitive or resistive

• IR Receiver

load.

• Multivibrators

Available in a choice of space-saving packages, the

• Alarm and Monitoring Circuits

LPV7215Q is ideal for use in handheld electronics

and mobile phone applications. The LPV7215Q is

manufactured with TI's advanced VIP50 process.

TYPICAL APPLICATION

Figure 1. Supply Current vs. Supply Voltage Figure 2. Propagation Delay vs. Overdrive

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 (27 pages)

PAGE 1
LPV7215 www.ti.com SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 LPV7215Q Micropower, CMOS Input, RRIO, 1.8V, Push-Pull Output Comparator Check for Samples: LPV7215 FEATURES DESCRIPTION 1 • 2 • • • • • • • + (For V = 1.8V, Typical Unless Otherwise Noted) Ultra Low Power Consumption 580 nA Wide Supply Voltage Range 1.8V to 5.5V Propagation Delay 4.
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LPV7215 SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 ABSOLUTE MAXIMUM RATINGS ESD Tolerance (3) www.ti.com (1) (2) Human Body Model 2000V Machine Model 200V VIN Differential ±2.5V Supply Voltage (V+ - V−) 6V V +0.3V, V −0.3V Voltage at Input/Output pins −65°C to +150°C Storage Temperature Range Junction Temperature (4) +150°C Soldering Information (1) (2) (3) (4) − + Infrared or Convection (20 sec) 235°C Wave Soldering Lead Temp.
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LPV7215 www.ti.com SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 1.8V ELECTRICAL CHARACTERISTICS (1) (continued) Unless otherwise specified, all limits are specified for TA = 25°C, V+ = 1.8V, V− = 0V, and VCM = V+/2, VO= V−. Boldface limits apply at the temperature extremes. Symbol CMRR Parameter Common Mode Rejection Ratio Conditions Min (2) Typ VCM Stepped from 0V to 0.7V 66 62 88 VCM Stepped from 1.2V to 1.8V 68 62 87 VCM Stepped from 0V to 1.
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LPV7215 SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 www.ti.com 2.7V ELECTRICAL CHARACTERISTICS (1) Unless otherwise specified, all limits are specified for TA = 25°C, V+ = 2.7V, V− = 0V, and VCM = V+/2, VO= V−. Boldface limits apply at the temperature extremes. Symbol IS Parameter Supply Current VOS Input Offset Voltage TCVOS Input Offset Average Drift (5) IB Input Bias Current IOS Input Offset Current CMRR Common Mode Rejection Ratio Conditions VCM = 0V ±0.3 ±6 ±8 VCM = 2.7V ±0.
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LPV7215 www.ti.com SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 2.7V ELECTRICAL CHARACTERISTICS (1) (continued) Unless otherwise specified, all limits are specified for TA = 25°C, V+ = 2.7V, V− = 0V, and VCM = V+/2, VO= V−. Boldface limits apply at the temperature extremes.
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LPV7215 SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 www.ti.com 5V ELECTRICAL CHARACTERISTICS (1) (continued) Unless otherwise specified, all limits are specified for TA = 25°C, V+ = 5V, V− = 0V, and VCM = V+/2, VO= V−. Boldface limits apply at the temperature extremes. Symbol trise tfall Parameter Conditions Min (2) (3) Typ Propagation Delay (High to Low) Overdrive = 10 mV 18 Overdrive = 100 mV 7.
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LPV7215 www.ti.com SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS At TJ = 25°C unless otherwise specified. 900 Supply Current vs. Supply Voltage Supply Current vs. Common Mode Input 900 VCM = 0.8V + V = 1.8V 850 85°C 700 600 SUPPLY CURRENT (nA) SUPPLY CURRENT (nA) 800 25°C 500 -40°C 400 300 200 800 85°C 750 25°C 700 650 -40°C 600 550 100 500 0 0 1 2 3 4 5 450 6 0 0.5 SUPPLY VOLTAGE (V) 1.5 2 COMMON MODE INPUT (V) Figure 4. Figure 5.
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LPV7215 SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) At TJ = 25°C unless otherwise specified. Output Voltage Low vs. Sink Current 0.6 VCC = 1.8V 0.5 VCC = 2.7V 0.4 0.3 VCC = 5V 0.2 0.1 0 0 1 2 3 4 5 6 OUTPUT VOLTAGE REFERENCED TO GND (V) OUTPUT VOLTAGE REFERENCED TO GND (V) Output Voltage Low vs. Sink Current 0.6 0.5 85°C 0.4 25°C 0.3 -40°C 0.2 0.1 0 0 1 2 Figure 10. VCC = 2.7V 0.5 0.4 VCC = 5V 0.2 0.
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LPV7215 www.ti.com SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) At TJ = 25°C unless otherwise specified. Propagation Delay vs. Overdrive Propagation Delay vs. Overdrive 15 18 13 tPD L-H 8 1 10 12 11 85°C 10 9 25°C 8 -40°C 7 6 5 100 VCM = 0.5V 13 tPD H-L 3 + V = 1.8V 14 PROPAGATION DELAY L-H (Ps) PROPAGATION DELAY (Ps) + V = 1.8V TA = 25°C 1000 0 100 200 OVERDRIVE (mV) Figure 16. Propagation Delay vs. Overdrive V = 2.
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LPV7215 SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) At TJ = 25°C unless otherwise specified. Propagation Delay vs. Overdrive Propagation Delay vs. Resistive Load 12 + 32 V = 5V 30 VCM = 0.5V PROPAGATION DELAY (Ps) PROPAGATION DELAY L-H (Ps) 34 28 26 24 85°C 22 20 25°C 18 -40°C -40°C 16 14 tPDL-H 10 + V = 5V 8 tPDH-L tPDL-H 6 + tPDH-L V = 1.
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LPV7215 www.ti.com SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) At TJ = 25°C unless otherwise specified. Propagation Delay vs. Common Mode Input Propagation Delay vs. Common Mode Input 13 VOD = 20 mV 14.5 + V = 2.7V 85°C 14 13.5 13 25°C 12.5 12 -40°C 11.5 VOD = 20 mV + PROPAGATION DELAY H-L (Ps) PROPAGATION DELAY L-H (Ps) 15 11 V = 5V 12 85°C 11 25°C 10 -40°C 10.5 9 10 0 0.5 1 1.5 2 2.5 0 3 1 2 COMMON MODE VOLTAGE (V) Figure 28.
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LPV7215 SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 www.ti.com APPLICATION INFORMATION Low supply current and fast propagation delay distinguish the LPV7215Q from other low power comparators. INPUT STAGE The LPV7215Q has rail-to-rail input common mode voltage range. It can operate at any differential input voltage within this limit as long as the differential voltage is greater than zero. A differential input of zero volts may result in oscillation.
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LPV7215 www.ti.com SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 5 4 VOUT (V) 3 2 1 0 TIME (2 Ps/DIV) Figure 32. Output Signal without Capacitive Load The plot in Figure 33 shows the output signal when a 20 pF capacitor is added as a load. The step is at about 2.5V. 5 4 VOUT (V) 3 2 1 0 TIME (2 Ps/DIV) Figure 33. Output Signal with 20 pF Load CAPACITIVE AND RESISTIVE LOADS The propagation delay is not affected by capacitive loads at the output of the LPV7215Q.
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LPV7215 SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 www.ti.com INVERTING COMPARATOR WITH HYSTERESIS The inverting comparator with hysteresis requires a three resistor network that is referenced to the supply voltage V+ of the comparator as shown in Figure 34. When VIN at the inverting input is less than VA, the voltage at the non-inverting node of the comparator (VIN < VA), the output voltage is high (for simplicity assume VO switches as high as V+).
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LPV7215 www.ti.com VA = VIN + SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 (VCC-VIN1) R1 R1 + R 2 To make the comparator switch back to it’s low state, VIN must equal VREF before VA will again equal VREF. VIN2 can be calculated by VREF (R1 + R2) ± VCC R1 VIN2 = R2 The hysteresis of this circuit is the difference between VIN1 and VIN2. ΔVIN = VCCR1/R2 VCC - VREF VA VIN VO + R1 RL R2 Figure 35.
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LPV7215 SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 www.ti.com VCC R3 R1 R4 R2 - VIN V2 D1 VO V1 + R6 R5 Figure 37. Zero Crossing Detector with Positive Feedback THRESHOLD DETECTOR Instead of tying the inverting input to 0V, the inverting input can be tied to a reference voltage. As the input on the non-inverting input passes the VREF threshold, the comparator’s output changes state. It is important to use a stable reference voltage to ensure a consistent switching point. Figure 38.
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LPV7215 www.ti.com SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 Figure 40. IR Receiver SQUARE WAVE GENERATOR A typical application for a comparator is as a square wave oscillator. The circuit in Figure 41 generates a square wave whose period is set by the RC time constant of the capacitor C1 and resistor R4. The maximum frequency is limited by the large signal propagation delay of the comparator and by the capacitive loading at the output, which limits the output slew rate.
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LPV7215 SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 www.ti.com The capacitor C1 now discharges through R4, and the voltage VC decreases until it is equal to VA2, at which point the comparator switches again, bringing it back to the initial stage. The time period is equal to twice the time it takes to discharge C1 from 2VCC/3 to VCC/3, which is given by R4C1·ln2.
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LPV7215 www.ti.com SNOSAI6I – SEPTEMBER 2005 – REVISED APRIL 2013 REVISION HISTORY Changes from Revision H (April 2013) to Revision I • 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 7-Oct-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ LPV7215MF/NOPB SOT-23 LPV7215MFX/NOPB LPV7215MG/NOPB LPV7215MGX/NOPB Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.2 1.4 4.0 8.0 Q3 DBV 5 1000 178.0 8.4 SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 SC70 DCK 5 1000 178.0 8.4 2.25 2.45 1.2 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LPV7215MF/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LPV7215MFX/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LPV7215MG/NOPB SC70 DCK 5 1000 210.0 185.0 35.0 LPV7215MGX/NOPB SC70 DCK 5 3000 210.0 185.0 35.
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