LT1719 - 4.5ns Single/Dual Supply 3V/5V Comparator with ...

1 LT171911719fa TYPICAL APPLICATION FEATURES DESCRIPTION APPLICATIONSL, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective (mV)0 DELAY (ns)30501719 TA0210204087654321025 CVSTEP = 100mVV+= 5 VCLOAD = 10pFRISING EDGE(tPDLH)FALLING EDGE(tPDHL)n UltraFast: at 20mV Overdrive 7ns at 5mV Overdriven Low Power: at 3Vn Separate Input and Output Power Supplies(SO-8 Only)n Output Optimized for 3V and 5V Suppliesn TTL/CMOS Compatible Rail-to-Rail Outputn Low Power Shutdown Mode: An Low Profi le (1mm) SOT-23 (ThinSOT ) PackageThe LT 1719 is an UltraFast Comparator optimized for low voltage operation. The input voltage range extends from 100mV below VEE to below VCC.

2 Internal hysteresis makes the LT1719 easy to use even with slow moving input signals. The rail-to-rail outputs directly interface to TTL and CMOS. Alternatively the symmetric output drive can be harnessed for analog applications or for easy translation to other single Supply logic levels. A shutdown control allows for reduced power consumption and extended battery life in portable LT1719 is available in the SO-8 and 6-lead SOT-23 package. The SO-8 package has separate supplies which allow fl exible operation, accomodating separate analog input ranges and output logic levels. For a dual/quad Comparator with similar performance, see the LT1720 High Speed Differential Line Receivern Crystal Oscillator Circuitsn Level Translatorsn Threshold Detectors/Discriminatorsn Zero-Crossing Detectorsn High Speed Sampling Circuitsn Delay to 6V Crystal Oscillator with TTL/CMOS OutputPropagation Delay vs Overdrive + TO 6V2k620 220 1 MHz TO 10 MHzCRYSTAL (AT-CUT)2k1719 Single/Dual Supply3V/5V Comparator withRail-to-Rail OutputLT171921719fa PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(Note 1)

3 ORDER INFORMATIONLEAD FREE FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGELT1719CS8#PBFLT1719CS8#TRPBF17198-L ead Plastic SO0 C to 70 CLT1719IS8#PBFLT1719IS8#TRPBF1719I8-Lead Plastic SO 40 C to 85 CLT1719CS6#PBFLT1719CS6#TRPBFLTHW6-Lead Plastic TSOT-230 C to 70 CLT1719IS6#PBFLT1719IS6#TRPBFLTJF6-Lead Plastic TSOT-23 40 C to 85 CConsult LTC Marketing for parts specifi ed with wider operating temperature LTC Marketing for information on non-standard lead based fi nish more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: Voltage +VS to GND (LT1719S8) .. 7V VCC to VEE (LT1719S8) .. 12V +VS to VEE (LT1719S8) .. 12V VEE to GND (LT1719S8) .. 12V to V+ to V (LT1719S6) ..7 VInput Current (+IN, IN or SHDN) .. 10mAOutput Current (Continuous).

4 20mAOperating Temperature Range C-Grade .. 0 C to 70 C I-Grade .. 40 C to 85 CJunction Temperature .. 150 CStorage Temperature Range .. 65 C to 150 CLead Temperature (Soldering, 10 sec) .. 300 CTOP VIEW+VSOUTSHDNGNDVCC+IN INVEES8 PACKAGE8-LEAD PLASTIC SO12348765+ IN 1 V 2+IN 36 SHDN5 OUT4 V+TOP VIEWS6 PACKAGE6-LEAD PLASTIC TSOT-23 TJMAX = 150 C, JA = 110 C/WTJMAX = 150 C, JA = 230 C/WLT171931719fa ELECTRICAL CHARACTERISTICSSYMBOLPARAMETERCONDITIONS MINTYPMAXUNITSVCC VEEI nput Supply Voltage (LT1719S8 Only) +VSOutput Supply Voltage (LT1719S8 Only) + V Supply Voltage ( lt1719cs6 Only) Voltage Range(Note 2) (LT1719S8) (LT1719S6)llVEE + +VTRIP Input Trip Points(Note 3)ll Offset Voltage(Note 3) Hysteresis Voltage(Note 3) VOS/ TInput Offset Voltage Driftl10 V/ CIBI nput Bias Currentl 6 AIOSI nput Offset ACMRRC ommon Mode Rejection Ratio(Note 4) (LT1719S8)(Note 5) (LT1719S6)ll55557065dBdBPSRRP ower Supply Rejection Ratio(Note 6) (LT1719S8)(Note 7) (LT1719S6)

5 65658080dBdBAVV oltage Gain(Note 8) VOHO utput High VoltageISOURCE = 4mA, VIN = VTRIP+ + 10mV (LT1719S8) (LT1719S6)ll+VS + Low VoltageISINK = 10mA, VIN = VTRIP DelayVOVERDRIVE = 20mV (Note 9) VEE = 0V(LT1719S8) V = 0V(LT1719S6) = 20mV, VEE = 5V (LT1719S8 Only) DelayVOVERDRIVE = 5mV (Notes 9, 10) VEE = 0V(LT1719S8) V = 0V(LT1719S6)l71013nsnstSKEWP ropagation Delay Skew(Note 11) Rise Time10% to 90% Fall Time90% to 10% Timing JitterVIN = (6dBm), ZIN = 50 tPD+ f = 20 MHz tPD 1511psRMSpsRMSfMAXM aximum Toggle FrequencyVOVERDRIVE = 50mV, +VS or V+ = 3 VVOVERDRIVE = 50mV, +VS or V+ = DelayTime to ZOUT 10k 75nstONWake-Up DelayTime to VOH or VOL, ILOAD = 1mA350nsICCP ositive Input Stage Supply Current+ VS = VCC = 5V, VEE = (LT1719S8 Only) + VS = VCC = 3V, VEE = Input Stage Supply Current+ VS = VCC = 5V, VEE = 5Vl (LT1719S8 Only) + VS = VCC = 3V, VEE = 0Vl The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25 C.

6 VCM = 1V, VSHDN = , VOVERDRIVE = 20mV, COUT = 10pF and for the LT1719S8 VCC = +VS = 5V and VEE = 5V, for the LT1719S6 V+ = 5V, V = 0V, unless otherwise specifi Output Stage Supply Current+ VS = VCC = 5V, VEE = (LT1719S8 Only) VS = VCC = 3V, VEE = + Supply Current (LT1719S6) V+ = V+ = Pin Current+VS or V+ = 5Vl 300 110 30 AISHDN3 Shutdown Pin Current+VS or V+ = 3Vl 200 80 20 AICCSISSIEESI+SICCSOISSOIEEOI+ODisabled Supply Currents (LT1719S8) (LT1719S8) (LT1719S8) (LT1719S6) (LT1719S8) (LT1719S8) (LT1719S8) (LT1719S6)+VS = 6V, VCC = 5V, VEE = 5 VVSHDN = +VS A A AV+ = 6V, VSHDN = +VS A+VS = 6V, VCC = 5V, VEE = 5 VShutdown Pin Openlll A A AV+ = 6V, Shutdown Pin A ELECTRICAL CHARACTERISTICS The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25 C.

7 VCM = 1V, VSHDN = , VOVERDRIVE = 20mV, COUT = 10pF and for the LT1719S8 VCC = +VS = 5V and VEE = 5V, for the LT1719S6 V+ = 5V, V = 0V, unless otherwise specifi 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and 2: If one input is within these common mode limits, the other input can go outside the common mode limits and the output will be 3: The LT1719 Comparator includes internal hysteresis. The trip points are the input voltage needed to change the output state in each direction. The offset voltage is defi ned as the average of VTRIP+ and VTRIP , while the hysteresis voltage is the difference of these 4: The LT1719S8 common mode rejection ratio is measured with VCC = 5V, VEE = 5V and is defi ned as the change in offset voltage measured from VCM = to VCM = , divided by 5: The LT1719S6 common mode rejection ratio is measured with V+ = 5V and is defi ned as the change in offset voltage measured from VCM = to VCM = , divided by 6: The LT1719S8 power Supply rejection ratio is measured with VCM = 1V and is defi ned as the worst of: the change in offset voltage from VEE = to VEE = 0V divided by , or the change in offset voltage from VCC = +VS = to VCC = +VS = 6V (with VEE = 0V) divided by 7.

8 The LT1719S6 power Supply rejection ratio is measured with VCM = 1V and is defi ned as the change in offset voltage measured from V+ = to V+ = 6V, divided by Note 8: Because of internal hysteresis, there is no small-signal region in which to measure gain. Proper operation of internal circuity is ensured by measuring VOH and VOL with only 10mV of 9: Propagation delay measurements made with 100mV steps. Overdrive is measured relative to VTRIP .Note 10: tPD cannot be measured in automatic handling equipment with low values of overdrive. The LT1719 is 100% tested with a 100mV step and 20mV overdrive. Correlation tests have shown that tPD limits can be guaranteed with this test, if additional DC tests are performed to guarantee that all internal bias conditions are 11: Propagation Delay Skew is defi ned as: tSKEW = |tPDLH tPDHL|LT171951719fa TYPICAL PERFORMANCE CHARACTERISTICSQ uiescent Supply Currentvs Supply VoltageSUPPLY VOLTAGE, VCC = +VS OR V+ (V) AND TRIP POINT VOLTAGE (mV)3210 1 2 +VOSVTRIP 25 CVCM = 1 VVEE OR V = GNDTEMPERATURE ( C) 3 VOSAND TRIP POINT VOLTAGE (mV) 113 202 2020601001719 G02140 40 6004080120 VTRIP+VOSVTRIP +VS = VCC or V+ = 5 VVCM = 1 VVEE OR V = GNDTEMPERATURE ( C) G03 25050100125 MODE INPUT VOLTAGE (V)+VS = VCC OR V+ = 5 VVEE = 5V (LT1719S8)V = GND (LT1719S6)DIFFERENTIAL INPUT VOLTAGE (V) 5 7 INPUT BIAS ( A) 6 4 3 2123421719 G04 5 4 3 2 105 10125 CTEMPERATURE ( C) 50 Supply CURRENT (mA)1001339 G050501086420 2 4 6 252575125 VCC = +VSOR V+ = 5 VVEE = GNDI+ (LT1719S6)+IS (LT1719S8)ICC (LT1719S8)IEE (LT1719S8) Supply VOLTAGE, VCC = +VS OR V+ (V)0 Supply CURRENTS (mA)

9 26543210 1 2 31719 G06173456TA = 25 CVEE = GNDI+ (LT1719S6)IS (LT1719S8)ICC (LT1719S8)IEE (LT1719S8)TEMPERATURE ( C) 50 PROPAGATION DELAY (ns) = 5mVOVERDRIVE = 20mV 3V5 VtPDLHVCM = 1 VVSTEP = 100mVCLOAD = 10pFVEE OR V = GND+VS = VCC = V+3V5 VSUPPLY VOLTAGE, +VS = VCC OR V+(V) DELAY (ns) CVSTEP = 100mVOVERDRIVE = 20mVCLOAD = 10pFVEE/V = GNDVEE = 5V(VCC, +VS = )(LT1719S8 ONLY)OUTPUT LOAD CAPACITANCE (pF)0 PROPAGATION DELAY (ns)30501719 G07102040987654321025 CVSTEP = 100mVOVERDRIVE = 20mV+VS = VCC OR V+= 5 VVEE OR V = 0 VRISING EDGE(tPDLH)FALLING EDGE(tPDHL)Propagation Delayvs Supply VoltagePropagation Delay vs TemperaturePropagation Delayvs Load CapacitanceQuiescent Supply Currentvs TemperatureInput Current vs Differential Input VoltageInput Offset and Trip Voltages vs Supply VoltageInput Offset and Trip Voltages vs TemperatureInput Common Mode Limitsvs TemperatureLT171961719faTYPICAL PERFORMANCE CHARACTERISTICSFREQUENCY (MHz)06830NO LOAD1719 G12431020402579+VS Supply CURRENT (mA)25 C+VS = 5 VCLOAD = 20pFCLOAD = 10pFOUTPUT SINK CURRENT (mA)0 OUTPUT VOLTAGE (V) C25 C125 CVCC = +VS OR V+= 5 VVIN = 10mV 55 COUTPUT SOURCE CURRENT (mA)0 OUTPUT VOLTAGE RELATIVE TO +VS (V) G11 C 55 C25 C25 CVCC = +VS OR V+= 5 VVIN = 10mVSHDN PIN VOLTAGE (V)VS 4 SHDN PIN CURRENT ( A)SUPPLYCURRENTS (mA)

10 43210 50 100VS 3VS 2VS 1VS1719 G13aTA = 25 CVEE = GND+VS = VCC = 5 VLT1719S8 ISICCSHDN PIN VOLTAGE (V)V+ 4 SHDN PIN CURRENT ( A) Supply I+CURRENT (mA)543210 50 100V+ 3V+ 2V+ 1V+1719 G13bTA = 25 CV+ = 5 VLT1719S6 Supply Current vs FrequencyOutput High Voltagevs Load CurrentOutput Low Voltage vs Load CurrentShutdown Currentsvs Shutdown VoltageShutdown Currentsvs Shutdown VoltageTEMPERATURE ( C) 50 WAKE-UP DELAY (ns)50060070025751719 G15400300 25050100125200100 Wake-Up Delayvs TemperatureTEMPERATURE ( C)SHUTDOWN CURRENTS ( A) 50255075100 125 2501501719 G14 SHUTDOWN PIN OPENSHUTDOWN = +VS +IS+ISSHUTDOWNPINCURRENTVCC = +VS = 5 VVEE = 5 VShutdown Currentsvs TemperatureLT171971719fa PIN FUNCTIONSLT1719S8 VCC (Pin 1): Positive Supply Voltage for Input Stage.+ IN (Pin 2): Noninverting Input of Comparator . IN (Pin 3): Inverting Input of (Pin 4): Negative Supply Voltage for Input Stage and Chip (Pin 5): (Pin 6): Shutdown.