NORDTEK DANMARK - HPT Series-HDSL Transformer - nordtek.com

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HPT Series-HDSL Transformer

Features

complies with ANSI and ETSI requirements
matched to all leading chip sets
very lowTHD permits maximum loop lengths
1,500V minimum isolation
excellent quality at competitive price due to high volume production
manufactured in ISO-9001 approved facility

HPT Series - HDSL Transformer

Transformer Selection Guide

Typical Performance Data

Manufacturer	IC Type	Application	Transformer
Rockwell (Brooktree)	BT8921/BT8970 BT8921/BT8970	784Kbps 1.168Kbps	HPT-100A HPT-110A
	BT8952 BT8952	784Kbps 1.168Kbps	HPT-120A HPT-130A
	BT8960 BT8960 BT8960	416Kbps 288Kbps 160Kbps	HPT-140A HPT-150A HPT-160A
Level One	SK70704/SK70706 SK70704/SK70721	784Kbps 1.168Kbps	HPT-170B HPT-180C

THD	-70dB max. 100kHz, 5Vpp
Longitudinal Balance	50dB min 40-300kHz
Return Loss	16.5dB min 40-300kHz
Matched to 135 Ohm Line Impedance

Electrical Specifications @ 25°C
Operating Temperature: -40°C to +85°C

Part Number	Turns Ratio ±2% IC : Line	OCL (mH)	L_L (µH) Max.	DCR (Ohms) IC / Line	I_DC (mA)	Isolation Voltage (Vrms Min.)	Schematic
HPT-100A HPT-110A	1ct:1:1 1ct:1:1	3,0±6% 2,0±6%	20 20	2,3 / 2,3 2,3 / 2,3	70 70	1.500 1.500	A A
HPT-120A HPT-130A	2ct:1 :1 2ct:1 :1	3,0±6% 2,0±6%	20 20	4,6 / 2,3 4,6 / 2,3	160 160	1.500 1.500	A A
HPT-140A HPT-150A HPT-160A	1ct:1:1 1ct:1:1 1ct:1:1	3,5±10% 5,0±10% 8,0±10%	40 40 40	2,3 / 2,3 2,6 / 2,6 2,6 / 2,6	70 70 70	1.500 1.500 1.500	A A A
HPT-170B HPT-180C	1ct:1,8ct 1ct:0,9:0,9	2,75±6% 2,03±6%	20 20	3,2 / 3,0 2,0 / 2,0	75 75	2.000 2.500	B C

Dimensions & Schematic - Pins

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