LT1116 12ns, Single Supply Ground-Sensing Comparator FeaTuresDescripTion n Ultra Fast (12ns Typ) The LT®1116 is an ultra fast (12ns) comparator designed n Operates off Single 5V Supply or ±5V for sensing signals near the negative supply. The input n Input Common Mode Extends to Negative Supply common mode range extends from 2.5V below the n No Minimum Input Slew Rate Requirement posi tive supply down to the negative supply rail. Like n Complementary TTL Output the LT1016, this comparator is specifically designed to n Inputs Can Exceed the Positive Supply Up to 15V inter face directly to TTL logic with complementary without Damaging the Comparator outputs. The comparator may operate from either a single n Low Offset Voltage 5V supply or dual ±5V supplies. Tight offset voltage n Pin-Compatible with LT1016 specifi cations and high gain allow the LT1116 to be used n in precision applications. Output Latch Capability Available in 8-Lead PDIP and SO Packages The LT1116 is designed for improved speed and stability for a wide range of operating conditions. The output stage applicaTions provides active drive in both directions for maximum speed n into TTL logic or passive loads, yet it has minimal cross- High Speed A/D Converters conduction current. Unlike other fast comparators, the n Zero Crossing Detectors LT1116 remains stable even for slow transitions through n Current Sense for Switching Regulators the active region, which eliminates the need to specify a n Extended Range V to F Converters minimum input slew rate. n Fast Pulse Height/Width Discriminators n High Speed Triggers The LT1116 has an internal, TTL compatible latch for n Line Receivers retaining data at the outputs. The latch holds data as n long as the latch pin is held high. Device parameters High Speed Sampling Circuits such as gain, offset, and negative power supply current L, LTC, LT, and LTM are registered trademarks of Linear Technology Corporation. are not significantly affected by variations in negative All other trademarks are the property of their respective owners. supply voltage. Typical applicaTionComparator Response TimeFast Current Comparator forCurrent Mode Switching Regulator THRESHOLD V IN LOGIC DRIVER M1 100mV STEP 5mV OVERDRIVE 5V 12ns Q + OUT LT1116 C1 RSENSE Q – OUTPUT 1V/DIV VOLTAGE V 12ns R1 BLANKING CONTROL INPUT 0 20 0 20 TIME (ns) LT1116 • TA01 LT1116 • TA02 1116fc For more information www.linear.com/LT1116 1
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