HMC974LC3C

Data Sheet High Speed, 10 GHz Window Comparator HMC974LC3C FEATURES Propagation delay: 88 ps Propagation delay at 50 mV overdrive: 20 ps Minimum detectable pulse width: 60 ps Differential latch control Power dissipation: 240 mW 16-terminal 2.9 mm × 2.9 mm LCC package APPLICATIONS Automatic test equipment (ATE) High speed instrumentation Clock and data restoration Semiconductor test systems Threshold detection in electronic warfare systems GENERAL DESCRIPTION The HMC974LC3C is a silicon germanium (SiGe) monolithic, ultra fast window comparator that features reduced swing positive emitter-coupled logic (RSPECL) output drivers that are level latched. Three output ports detect whether an analog input signal is above, below, or between two reference levels supplied at the input (see Figure 2). FUNCTIONAL BLOCK DIAGRAM HMC974LC3C 16 VCCI 15 RTN 14 VEE 13 VCCO RT 1 WIN 2 WIT 3 RB 4 12 ORB 11 WOUTB 10 URB 9 VCCO VCCI 5 LE 6 LE 7 VEE 8 14863-001 Figure 1. PACKAGE BASE VEE The outputs are single-ended negative logic. Incorporating two proven comparators at the input provides good dc and dynamic matching and reduces the input capacitance. The reduced swing output stages are designed to directly drive 400 mV into 50 Ω terminated to a voltage (VTERM = VCCO − 2 V). The HMC974LC3C features high speed latches that can either be enabled to latch the output data or left in the track mode to implement a tracking window comparator. Rev. E Document Feedback Information furnished by A...