AH1157 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. Specification: Input impedance 2.0 MΩ (typical) Output impedance < 1Ω (op-amp driver output) Power supply + 1.5V to + 5V (absolute max + 6V) Typical current + 15 mA per rail at + 5V supply Group delay adjustment range wrt 200 kHz +170 ns at 4.43 MHz Amplitude ripple 0.2 dB to 5.0 MHz to +170 ns at 3.58 MHz (no external capacitor) 0.35 dB to 5.0 MHz (110 pF external capacitor) Package DR00062A © Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice FARA086.DOC Page 1 of 2 Jun-99(A) PACKAGE DETAIL Faraday Technology Ltd. Croft Road Industrial Estate, Newcastle, Staffordshire ST5 0QZ. England. FARA086.DOC Tel: Fax: Email: Web site: Page 2 of 2 + 44 (0)1782 661501 + 44 (0)1782 630101 [email protected] http://www.faradaytech.co.uk Jun-99(A)