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HDSL Data Transformer
For Brooktree NT8921 / BT8970
1168Kbps HDSL Applications
SPT-2001


Primary Impedance (nom.): 135 Ohms
Secondary Impedance: 32 Ohms
Turns Ratio (± 2%): 2 : 1
Max. Unbalanced D.C.: 160 mA
Insertion Loss: 0.5 dB max @ 300KHz
Minumum Return Loss: 16.5 dB 40KHz - 300KHz
T.H.D.: -70 dB min @ 40KHz @ 14dBm
Primary Resistance: 2.50 Ohms Max.
Secondary Resistance: 1.0 Ohm Max
Frequency Response: ± 0.2 dB 40KHz - 300KHz
Primary Inductance
@ 0.100V:
2.0mH ± 6% @ 10KHz
Maximum L Leakage
@ 0.100V:
11.0µH @ 100KHz (1-5)
Dielectric Strength: 1500 VAC
(primary-secondary-core)
Electrical and Dimensional Drawings
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