NORDTEK DANMARK - TEXQ - 4 Port Auto MDI/MDIX Module - nordtek.com

TEXQ - 4 Port Auto MDI/MDIX Module

Features

  • Designed for Broadcom BCM5226/5228, Level One LXT9784/9785 and Kendin KS8995/8995E chipsets
  • Low profile (5.8mm) and light weight (4.5 g) 10/100Base-T Quad Port isolation transformer modules designed for Auto MDI/MDIX applications
  • SMD packages facilitate pick and place compatibility and speed of placement while providing consistent and reliable co-planarity
  • Modules meet requirements of IEEE 802.3u and ANSI X3.263
  • Manufactured in ISO-9001 approved facility
  

Electrical Specifications @ 25°C

Inductance: 350µH minimum @ 100kHz, 100mV, 8mA bias
Leakage Inductance: 0.4µH @ 1MHz
Minimum Isolation Voltage: 1,500 Vrms		   Operating Temperature: 0° to +70°C
Storage Temperature: -25°C to +105°C
Standard packing: Tape and reel


Quality and consistency is guaranteed through 100% testing of the specified parameters for primary inductance, leakage inductance, turns ratio, DC resistance and Interwinding capacitance. This ensures that the return loss and pulse wave shape requirements can be fully maintained. Additionally, all parts are tested for 1,500V minimum isolation.

Applications

10/100BaseT Quad transformer modules contain transmit and receive isolation transformers to maintain consistent wave shape and suppression of common mode noise while providing equipment isolation per IEEE 802.3. High impedance common mode quad chokes for additional EMI suppression have been added on some models as required for FCC and CISPR 22 Class B certification.


TEXQ Series - Quad Port MDI/MDIX 10/100Base-T Isolation Transformer Modules

Part
Number		 Turns Ratio
±2%		 Insertion
Loss
(dB Typ.)		 Return Loss
(dB Min.)		 Crosstalk
(dB Typ.)		 Differential to
Common Mode
Rejection (dB Typ.)		 Schematic
Tx Rx 0.1-100MHz 0.5-30MHz 40MHz 50MHz 60-80MHz 1MHz 30MHz 60MHz 100MHz 1-60MHz 60-200MHz
 TEXQ-400M-J
 TEXQ-400N-J
 TEXQ-405N-J		 1:1
1ct:1ct
1.89ct:1ct		 1:1
1ct:1ct
1ct:1ct		 -1.0
-1.0
-1.0		 -18
-18
-18		 -14.6
-14.6
-16		 -13.1
-13.1
-14		 -10
-10
-12		 -65
-55
-32		 -50
-45
-32		 -40
-40
-32		 -35
-33
-32		 -40
-36
-40		 -36
-24
-40		 M
N
N


Dimensions

Schematics