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LT1016
LT1016 UltraFast Precision 10ns Comparator U FEATURES ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO UltraFastTM (10ns typ) Operates Off Single 5V Supply or ±5V Complementary Output to TTL Low Offset Voltage No Minimum Input Slew Rate Requirement No Power Supply Current Spiking Output Latch Capability U APPLICATIO S ■ ■ ■ ■ ■ ■ ■ ■ ■ 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 Oscillators , LTC and LT are registered trademarks of Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporation. The 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 comparator. A unique output stage provides active drive in both directions 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 level. The LT1016 has a LATCH pin which will retain input data at the outputs, when held high. 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. Linear Technology offers a wide range of comparators in addition to the LT1016 that address different applications. See the Related Parts section on the back page of the data sheet. U TYPICAL APPLICATION Response Time 10MHz to 25MHz Crystal Oscillator 5V 22Ω THRESHOLD VIN 100mV STEP 5mV OVERDRIVE 10MHz TO 25MHz (AT CUT) 2k THRESHOLD 5V 820pF V+ + 2k Q LT1016 – Q V– 200pF OUTPUT VOUT 1V/DIV GND LATCH 0 2k 1016 TA1a 0 20 TIME (ns) 20 1016 TA2b 1
IDT
Integrated Device Technology, Inc.
U.S.A
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