AD1317

a FEATURES Full Window Comparator 2.0 pF max Input Capacitance 9 V max Differential Input Voltage 2.5 ns Propagation Delays Low Dispersion Low Input Bias Current Independent Latch Function Input Inhibit Mode 80 dB CMRR APPLICATIONS High Speed Pin Electronic Receiver High Speed Triggers Threshold Detectors Peak Detectors Ultrahigh Speed Window Comparator with Latch AD1317 FUNCTIONAL BLOCK DIAGRAM PRODUCT DESCRIPTION The AD1317 is an ultrahigh speed window comparator with a latch. It uses a high speed monolithic process to provide high dc accuracy without sacrificing input voltage range. The AD1317 guarantees a 2.8 ns maximum propagation delay. On-chip connection of the common input eliminates the contributions of a second bonding pad and package pin to the input capacitance, resulting in a maximum input capacitance of 2 pF. The dispersion, or variation in propagation delay with input overdrive levels and slew rates, is typically 350 ps for 5 V signals and 200 ps for 1 V inputs. The AD1317 employs a high precision differential input stage with a common-mode range of 9 V. Its complementary digital outputs are ECL compatible. The output stage is capable of driving a 50 Ω line terminated to –2 V. The AD1317 also provides a latch function, allowing operation in a sample-hold mode. The latch inputs can also be used to generate hysteresis. The comparator input can be switched into a high impedance state through the inhibit mode feature, electrically removing the comparator from t...