HMC674LP3E

The HMC674LP3E are silicon germanium(SiGe), monolithic, ultrafast comparators that feature reducedswing positive emitter-coupled logic (RSPECL) output driversand latch inputs. These comparators support 10 Gbps operationand provide 85 ps propagation delay and an input signalminimum pulse width of 60 ps with 0.2 ps rms of random jitter(RJ). Overdrive and slew rate dispersion is typically 10 ps, makingthe HMC674LP3E ideal for a wide range ofapplications from ATE to broadband communications. TheRSPECL output stages directly drive 400 mV into a 50 Ω resistorterminated to V_TT = (V_CCO − 2.0 V), where V_TT is the PECLtermination voltage (see Figure 16). The HMC674LP3E feature a high speed latch and programmablehysteresis. These devices can operate in either latch mode or asa tracking comparator.

Key Features

• Equivalent input bandwidth: 9.3 GHz typical
• Propagation delay: 85 ps typical
• Overdrive and slew rate dispersion: 10 ps typical
• Input signal minimum pulse width: 60 ps typical
• Resistor programmable hysteresis
• Differential latch control
• Power dissipation: 140 mW typical
• 16-terminal, 3 mm × 3 mm, ceramic leadless chip carrier (LCC)
• 16-lead lead frame chip scale package (LFCSP)

Application

• Automatic test equipment (ATE) applications
• High speed instrumentation
• Digital receiver systems
• Pulse spectroscopy
• High speed trigger circuits
• Clock and data restoration