ECL/PECL Terminators

ECL/PECL Terminators Signals from ECL and PECL logic ICs are specified to be terminated into 50 Ω returned to VTT = -2.0V and VTT=+1.3V respectively. Most test instrumentation, including sampling oscilloscopes, have input impedances of 50 Ω returned to ground. This has caused problems for measuring ECL or PECL signals. Our 5620-Series of ECL/PECL Terminators solves this problem. They are DC biased 50 Ω attenuators that provide the proper 50 Ω termination impedance returned to VTT, while at the same time delivering an attenuated and level shifted output signal to 50 Ω ground based instrumentation. The output levels are safe to apply directly to sampling oscilloscopes and they are ideal for testing up to 4 Gb/s ECL/PECL logic. 5620 ECL Terminator

SPECIFICATIONS

Model Logic Type VTT Bandwidth Attenuation RF Connectors Spec Sheet 5620 ECL -2.0 V DC to 10 GHz 12 dB (4x) SMA 5622 PECL +1.3 V DC to 8 GHz 14 dB (5x) SMA 5623 ECL or PECL 0.82*VDC DC to 8 GHz 20 dB (10x) SMA