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AT2 Series
1GHz Attenuator

* CE Approved, Class A RFI Shielding

* Mini Size (13x40.5mm)

* SMD Parts

* Excellent Return Loss

* DC Block

* Waterproof (alternative)

* Patented Housing

* Suitable for CATV, DVB-C, DVB-T, ATSC
  and 75ohm communication systems

    Also Recommended

    AT2P : Power Passing Series

    AT3 : Mini Series

    More ... : 2GHz Series

Most TV, CATV and Set-top box tuners are designed to operate with input signal levels between
-80dBm and -20dBm per channel. If feed signal levels to TVs, CATV or Set-top box tuners are too high, picture distortions will occur.

It is recommended that by inserting an attenuator into the distribution system, the signal is reduced to less than -20dBm at the TV, Set-top box RF connector.

The AT2 series is able to meet the needs of general-purpose attenuation applications in the LF / VHF / UHF frequency range.

The specification, from 5MHz to 1000MHz at 100mW average, 200mW peak, excellent return loss(>20dB) and good accuracy (1dB at 1000MHz). (see the figure)

Our mini-size attenuators are also available with Power Passing (AT2P) and in an even smaller housing (AT3).

* Specify dB value when ordering.

Model Attenuation Model Attenuation
AT2 - 103W   3dB AT2 - 105W 5dB
AT2 - 106W   6dB AT2 - 110W 10dB
AT2 - 109W   9dB AT2 - 115W 15dB
AT2 - 112W 12dB AT2 - 120W 20dB
AT2 - 116W 16dB AT2 - 130W 30dB
AT2 - 118W 18dB AT2 - 140W 40dB
  Electrical Curve ( AT2-105 )

Insertion Loss  |  Return Loss
SPAN 1000MHz
Fig 1

Insertion Loss  |  Return Loss
Fig 2
  General Specifications
  Item AT2 - 105W AT2 - 105
  Power Passing NO NO
  Waterproof YES NO
  Impedance 75 ohm
  Frequency Range 5 - 1000MHz
  Insertion Loss 5dB (typ)
  Flatness +/-0.4dB (max)
  Return Loss 20dB (typ)
  Power 100mW (average)
  DC Withstand DC 100V (max)
  Dimensions 13(¢) x 40.5 mm
  Net Weight 18g
   * Specifications are subject to change without notice.



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TEL: 886-6-2016969   FAX: 886-6-2013939   E-mail: soontai@soontai.com