Audio Hybrid Transformer 7390 is designed to be used in a 2-coil hybrid transformer configuration with the following features: • Low Insertion Loss • High Return Loss • DC capability • High Transhybrid Loss 7390 Applications: Hybrid interface between the 2-wire loop and the 4-wire circuit, and where DC handling capability is required on the 2-wire side. MECHANICAL AND SCHEMATIC (All dimensions in inches) ELECTRICAL SPECIFICATION @ 25˚C ISSUE: P1 03/05/02 7390 7390 has the following electrical performance in a 2-coil hybrid configuration, as per diagram, when terminated with specified impedances and with up to 70 mA loop current at the 2-wire port. Insertion Loss Frequency Response Return Loss, 2-wire port Longitudinal Balance Transhybrid Loss Dielectric Strength @ 1000 Hz 300 – 4000 Hz 1000 – 2000 Hz 300 – 3500 Hz 200 – 3000 Hz 300 – 3000 Hz Pri. to Sec. Winding to core < 1.0 dB < 0.25 dB > 27 dB > 20 dB > 76 dB > 46 dB 1500 Vrms 1500 Vrms 229 Colonnade Road, Ottawa, Ontario, Canada K2E 7K3 Tel: (613) 226-1626 Fax: (613) 226-7124 www.filtran.com An ISO 9001 Registered Company