[Faraday Technology]

ACTIVE GROUP DELAY CORRECTOR NETWORK

The AH1157 is an active group delay network which produces a group delay curve with a lift of +170 ns at 4.43 MHz with respect to the delay at 200 kHz. The addition of capacitance (externally) across pins 11 and 12 of the module brings the +170 ns (delay) point down in frequency - typically 110 pF across the pins produces +170 ns at 3.58 MHz wrt delay at 200 kHz. High input and low output impedance simplify interfacing the module to the rest of the system.