DS25BR400

ACTIVE

Quad 2.5-Gbps CML transceiver with transmit de-emphasis and receive equalization

Product details

Function Buffer, Equalizer, Transmitter Protocols CML Number of transmitters 4 Number of receivers 4 Supply voltage (V) 3.3 Signaling rate (Mbps) 2500 Input signal CML Output signal CML Rating Catalog Operating temperature range (°C) -40 to 85
Function Buffer, Equalizer, Transmitter Protocols CML Number of transmitters 4 Number of receivers 4 Supply voltage (V) 3.3 Signaling rate (Mbps) 2500 Input signal CML Output signal CML Rating Catalog Operating temperature range (°C) -40 to 85
WQFN (NKA) 60 81 mm² 9 x 9
  • 250 Mbps – 2.5 Gbps Low Jitter Operation
  • Optional Fixed Input Equalization
  • Selectable Output De-Emphasis
  • Individual Loopback Controls
  • On-Chip Termination
  • +3.3V Supply
  • Lead-Less WQFN-60 Pin Package
    • (9 mm x9 mm x0.8 mm, 0.5 mm Pitch)
  • −40°C to +85°C Industrial Temperature Range
  • 6 kV ESD Rating, HBM
  • 250 Mbps – 2.5 Gbps Low Jitter Operation
  • Optional Fixed Input Equalization
  • Selectable Output De-Emphasis
  • Individual Loopback Controls
  • On-Chip Termination
  • +3.3V Supply
  • Lead-Less WQFN-60 Pin Package
    • (9 mm x9 mm x0.8 mm, 0.5 mm Pitch)
  • −40°C to +85°C Industrial Temperature Range
  • 6 kV ESD Rating, HBM

The DS25BR400 is a quad 250 Mbps – 2.5 Gbps CML transceiver, or 8-channel buffer, for use in backplane and cable applications. With operation down to 250 Mbps, the DS25BR400 can be used in applications requiring both low and high frequency data rates. Each input stage has a fixed equalizer to reduce ISI distortion from board traces. The equalizers are enabled through two control pins. These control pins provide flexibility in applications where ISI distortion may vary from one direction to another. All output drivers have four selectable steps of de-emphasis to compensate for transmission loss. The de-emphasis blocks are also grouped in fours. In addition, the DS25BR400 also has loopback control capability on four channels. All the CML drivers have 50Ω termination to VCC. All receivers are internally terminated with differential 100Ω.

The DS25BR400 is a quad 250 Mbps – 2.5 Gbps CML transceiver, or 8-channel buffer, for use in backplane and cable applications. With operation down to 250 Mbps, the DS25BR400 can be used in applications requiring both low and high frequency data rates. Each input stage has a fixed equalizer to reduce ISI distortion from board traces. The equalizers are enabled through two control pins. These control pins provide flexibility in applications where ISI distortion may vary from one direction to another. All output drivers have four selectable steps of de-emphasis to compensate for transmission loss. The de-emphasis blocks are also grouped in fours. In addition, the DS25BR400 also has loopback control capability on four channels. All the CML drivers have 50Ω termination to VCC. All receivers are internally terminated with differential 100Ω.

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* Data sheet DS25BR400 Quad 2.5Gbps CML Transceiver w/Transmit De-Emphas & Receive Equal datasheet (Rev. I) 19 Feb 2013

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