LT1016 (Rev D) - Analog Devices

1 LT10161 Rev DFor more information FeedbackTYPICAL APPLICATION FEATURESDESCRIPTIONU ltraFast Precision 10ns ComparatorThe lt 1016 is an UltraFast 10ns comparator that interfaces directly to TTL/CMOS logic while operating off either 5V or single 5V supplies. Tight offset voltage specifications and high gain allow the LT1016 to be used in precision applications. Matched complementary outputs further extend the versatility of this unique output stage provides active drive in both direc-tions for maximum speed into TTL/CMOS logic or passive loads, yet does not exhibit the large current spikes found in conventional output stages. This allows the LT1016 to remain stable with the outputs in the active region which, greatly reduces the problem of output glitching when the input signal is slow moving or is low LT1016 has a LATCH pin which will retain input data at the outputs, when held high.

2 Quiescent negative power supply current is only 3mA. This allows the negative supply pin to be driven from virtually any supply voltage with a simple resistive divider. Device performance is not affected by variations in negative supply voltage. Analog Devices offers a wide range of comparators in addition to the LT1016 that address different applica-tions. See the Related Parts section on the back page of the data to 25 MHz Crystal OscillatorAPPLICATIONSnUltraFast (10ns typ)nOperates Off Single 5V Supply or 5 VnComplementary Output to TTLnLow Offset VoltagenNo Minimum Input Slew Rate RequirementnNo Power Supply Current Spiking nOutput Latch Capabilityn High Speed A/D Converters High Speed Sampling Circuits Line Receivers Extended Range V-to-F Converters Fast Pulse Height/Width Discriminators Zero-Crossing Detectors Current Sense for Switching Regulators High Speed Triggers Crystal OscillatorsResponse Time +LT101610 MHz TO 25 MHz(AT CUT)22 820pF200pF2k2k2k5V5VV V+LATCHGNDQQOUTPUT1016 TA1aTIME (ns)01016 TA2b20020 THRESHOLDTHRESHOLDVIN100mV STEP5mV OVERDRIVEVOUT1V/DIVAll registered trademarks and trademarks are the property of their respective owners.

3 LT10162 Rev DFor more information MAXIMUM RATINGSP ositive Supply Voltage (Note 5) ..7 VNegative Supply Voltage ..7 VDifferential Input Voltage (Note 7) .. 5V+IN, IN and L ATCH ENABLE Current (Note 7) .. 10mAOutput Current (Continuous) (Note 7) .. 20mA(Note 1)PIN CONFIGURATIONO perating Temper atur e Range LT1016 I .. 40 C to 85 C LT1016 C ..0 C to 70 CStorage Temper atur e Range .. 65 C to 150 CLead Temper atur e (Soldering, 10 sec) ..300 CORDER INFORMATIONLEAD FREE FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGELT1016CN8#PBFLT1016CN#TRPBFLT1016CN 88-Lead PDIP0 C to 70 CLT1016IN8#PBFLT1016IN#TRPBFLT1016IN88-L ead PDIP 40 C to 85 CLT1016CS8#PBFLT1016CS8#TRPBF10168-Lead Plastic SO0 C to 70 CLT1016IS8#PBFLT1016IS8#TRPBF1016I8-Lead Plastic SO 40 C to 85 CConsult ADI Marketing for parts specified with wider operating temperature more information on lead free part marking, go to: For more information on tape and reel specifications, go to.

4 Some packages are available in 500 unit reels through designated sales channels with #TRMPBF #orderinfo12348765 TOP VIEWV++IN INV Q OUTQ OUTGNDLATCHENABLEN8 PACKAGE8-LEAD PDIPTJMAX = 100 C, JA = 130 C/W (N8)+ TOP VIEWQ OUTQ OUTGNDLATCHENABLEV++IN INV S8 PACKAGE8-LEAD PLASTIC SOTJMAX = 110 C, JA = 120 C/W12348765+ LT10163 Rev DFor more information CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 C. V+ = 5V, V = 5V, VOUT (Q) = , VLATCH = 0V, unless otherwise Offset VoltageRS 100 (Note 2) 3 mV VOS/ TInput Offset Voltage Drift 4 V/ CIOSI nput Offset Current(Note 2) A AIBI nput Bias Current(Note 3) 510 13 A AInput Voltage Range(Note 6) Single 5V Supply VCMRRC ommon Mode Rejection VCM 8096dBPSRRS upply Voltage RejectionPositive Supply V+ LT1016C 6075dBPositive Supply V+ LT1016I 5475dBNegative Supply 2V V 7V 80100dBAVS mall-Signal Voltage Gain1V VOUT 2V14003000V/VVOHO utput High VoltageV+ =1mA IOUT = 10mA VVOLO utput Low VoltageISINK = 4mA ISINK = 10mA VI+Positive Supply Current 2535mAI Negative Supply Current 35mAVIHLATCH Pin Hi Input Voltage Pin Lo Input Voltage Pin CurrentVLATCH = 0V 500 AtPDPropagation Delay (Note 4)

5 VIN = 100mV, OD = 5mV 1014 16ns ns VIN = 100mV, OD = 20mV 912 15ns ns tPDDifferential Propagation Delay(Note 4) VIN = 100mV, OD = 5mV3nsLatch Setup Time2nsNote 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: Input offset voltage is defined as the average of the two voltages measured by forcing first one output, then the other to Input offset current is defined in the same 3: Input bias current (IB) is defined as the average of the two input 4: tPD and tPD cannot be measured in automatic handling equipment with low values of overdrive. The LT1016 is sample tested with a 1V step and 500mV overdrive. Correlation tests have shown that tPD and tPD limits shown can be guaranteed with this test if additional DC tests are performed to guarantee that all internal bias conditions are correct.

6 For low overdrive conditions VOS is added to overdrive. Differential propogation delay is defined as: tPD = tPDLH tPDHLNote 5: Electrical specifications apply only up to 6: Input voltage range is guaranteed in part by CMRR testing and in part by design and characterization. See text for discussion of input voltage range for supplies other than 5V or 7: This parameter is guaranteed to meet specified performance through design and characterization. It has not been DFor more information PERFORMANCE CHARACTERISTICSGain CharacteristicsPropagation Delay vs Input OverdrivePropagation Delay vs Load CapacitancePropagation Delay vs Source ResistancePropagation Delay vs Supply VoltagePropagation Delay vs TemperatureLatch Set-Up Time vs TemperatureOutput Low Voltage (VOL) vs Output Sink CurrentOutput High Voltage (VOH) vs Output Source CurrentDIFFERENTIAL INPUT VOLTAGE (mV) VOLTAGE (V)1016 G01 = 125 CTJ = 55 CTJ = 25 CVS = 5 VIOUT = 0 OVERDRIVE (mV)0 TIME (ns)2520151050401016 G0210203050VS = 5 VTJ = 25 CVSTEP = 100mVCLOAD = 10pFOUTPUT LOAD CAPACITANCE (pF)0 TIME (ns)2520151050401016 G0310203050VS = 5 VTJ = 25 CIOUT = 0 VSTEP = 100mVOVERDRIVE = 5mVtPDHLtPDLHSOURCE RESISTANCE ( )0500 TIME (ns)

7 G0480706050403020100 STEP SIZE = 800mV400mV200mV100mVVS = 5 VTJ = 25 COVERDRIVE = 20mVEQUIVALENT INPUT CAPACITANCE IS = 10pFPOSITIVE SUPPLY VOLTAGE (V) (ns) EDGE tPDHLRISING EDGE tPDLHV = 5 VTJ = 25 CVSTEP = 100mVOVERDRIVE = 5mVCLOAD = 10pFJUNCTION TEMPERATURE ( C) 50 TIME (ns)30252015105025751016 G06 25050100125 FALLING OUTPUT tPDHLRISING OUTPUT tPDLHVS = 5 VOVERDRIVE = 5mVSTEP SIZE = 100mVCLOAD = 10pFJUNCTION TEMPERATURE ( C) 50 TIME (ns)6420 2 4 625751016 G07 25050100125VS = 5 VIOUT = 0 VOUTPUT SINK CURRENT (mA)0 OUTPUT VOLTAGE (V) G0842610141881220TJ = 125 CTJ = 55 CTJ = 25 CVS = 5 VVIN = 30mVOUTPUT SOURCE CURRENT (mA)0 OUTPUT VOLTAGE (V) G0942610141881220TJ = 125 CTJ = 55 CTJ = 25 CVS = 5 VVIN = 30mVLT10165 Rev DFor more information PERFORMANCE CHARACTERISTICSN egative Supply Current vs TemperaturePositive Supply Current vs Switching FrequencyPositive Supply Current vs Positive Supply VoltageCommon Mode Rejection vs FrequencyPositive Common Mode Limit vs TemperatureNegative Common Mode Limit vs TemperatureLATCH Pin Threshold vs TemperatureLATCH Pin Current* vs TemperatureJUNCTION TEMPERATURE ( C) 50 CURRENT (mA)654321025751016 G10 25050100125VS = 5 VIOUT = 0 SUPPLY VOLTAGE (V)0 CURRENT (mA) 504540353025201510502451016 G1113678TJ = 125 CTJ = 55 CV = 0 VVIN = 60mVIOUT = 0TJ = 25 CSWITCHING FREQUENCY (MHz)1 CURRENT (mA)4035302520151050101001016 G12TJ = 55 CTJ = 25 CTJ = 125 CVS = 5 VVIN = 50mVIOUT = 0 FREQUENCY (Hz)10kREJECTION RATIO (dB)

8 120110100908070605040100k1M10M1016 G13VS = 5 VVIN = 2VP-PTJ = 25 CJUNCTION TEMPERATURE ( C) 50 INPUT VOLTAGE (V)654321025751016 G14 25050100125VS = 5V**SEE APPLICATION INFORMATION FOR COMMON MODE LIMIT WITH VARYING SUPPLY TEMPERATURE ( C) 50 INPUT VOLTAGE (V)210 1 2 3 425751016 G15 25050100125VS = 5V*VS = SINGLE 5V SUPPLY*SEE APPLICATION INFORMATION FOR COMMON MODE LIMIT WITH VARYING SUPPLY TEMPERATURE ( C) 50 VOLTAGE (V) G16 25050100125 OUTPUT UNAFFECTEDOUTPUT LATCHEDVS = 5 VJUNCTION TEMPERATURE ( C) 50 CURRENT (A)30025020015010050025751016 G17 25050100125VS = 5 VVLATCH = 0V*CURRENT COMES OUT OF LATCH PIN BELOW THRESHOLDLT10166 Rev DFor more information INFORMATIONC ommon Mode ConsiderationsThe LT1016 is specified for a common mode range of to with supply voltages of 5V. A more general consideration is that the common mode range is above the negative supply and below the positive supply, independent of the actual supply voltage.

9 The criteria for common mode limit is that the output still responds correctly to a small differential input signal. Either input may be outside the common mode limit (up to the supply voltage) as long as the remaining input is within the specified limit, and the output will still respond correctly. There is one consideration, however, for inputs that exceed the positive common mode limit. Propagation delay will be increased by up to 10ns if the signal input is more positive than the upper common mode limit and then switches back to within the common mode range. This effect is not seen for signals more negative than the lower common mode Impedance and Bias CurrentInput bias current is measured with the output held at As with any simple NPN differential input stage, the LT1016 bias current will go to zero on an input that is low and double on an input that is high. If both inputs are less than above V , both input bias currents will go to zero.

10 If either input exceeds the positive common mode limit, input bias current will increase rapidly, approaching several milliamperes at VIN = V+.Differential input resistance at zero differential input voltage is about 10k , rapidly increasing as larger DC differential input signals are applied. Common mode input resistance is about 4M with zero differential input voltage. With large differential input signals, the high input will have an input resistance of about 2M and the low input greater than 20M .Input capacitance is typically This is measured by inserting a 1k resistor in series with the input and measur-ing the resultant change in propagation Pin DynamicsThe LATCH pin is intended to retain input data (output latched) when the LATCH pin goes high. This pin will float to a high state when disconnected, so a flowthrough condition requires that the LATCH pin be grounded.