Audio TPA3858 is a 1 : 1 line matching transformer with the following features. • • • • • TPA3858 Line Coupling / Bridging Transformer Low profile. Small volume. Conforming to FCC part 68 and Canadian CS 03 regulations. Low cost. High insulation voltage. Applications: Interfacing equipment to telephone line, requiring small size and high insulation voltage. TPA3858-2 is designed for high impedance bridging applications. MECHANICAL 0.50 MAX 4 5 DIMENSIONS ARE IN INCHES 0.50 MAX 1 0.12 MIN 8 4 3 5 6 2 1 7 8 TPA3858 TPA3858-1 DIA 0.025 8 5 DRILL 0.040 8 PLACES 0.45 MAX 1 4 GRID 0.10 x 0.10 WHITE DOT 4 2 5 7 3 1 6 8 TPA3858-2 ELECTRICAL ISSUE:E 95/04/05 TPA3858.CHP Impedance TPA3858 & -1 TPA3858-2 600 : 600 Ω 10 K : 10 K Insertion Loss @ 1000 Hz < 1.0 dB < 0.5 dB Frequency Response 300 -5000 Hz < 1.0 dB < 0.5dB Longitudinal Balance 300 - 3500 Hz > 65 dB > 65 dB Winding Resistance (1 - 4) (5 - 8) 57 Ω nom. 57 Ω nom. Return loss 300 - 3500 Hz > 15 dB Bridging Loss on 600 Ω line and when teminated 10 KΩ at the output Dielectric Strength Filtran Limited 250 Ω nom. 250 Ω nom. < 0.25 dB 2500 Vrms 229 Colonnade Road, Nepean, Ontario, K2E 7K3, Canada, Tel:(613) 226-1626, Fax:(613) 226-7124. 2500 Vrms 7-6