ADN4696E/ADN4697E Transceivers

By Analog Devices Inc 172

ADN4696E/ADN4697E Transceivers

Analog Devices' ADN4696E and ADN4697E are multipoint low-voltage differential signaling (M-LVDS) transceivers (driver and receiver pairs) which can operate at up to 200 Mbps (100 MHz). The receivers detect the bus state with a differential input of as little as 50 mV over a common-mode voltage range of -1 V to 3.4 V. ESD protection of up to ±15 kV is implemented on the bus pins.

The parts adhere to the TIA/EIA-899 standard for M-LVDS and are similar to counterpart LVDS devices that comply with the TIA/EIA-644 standard for LVDS, but designed with features for multipoint applications. These features include a driver output that supports multipoint bus loads as low as 30 Ω, with controlled transition times to permit stubs from the backbone transmission line. Up to 32 nodes can be connected to the bus.

The ADN4696E and ADN4697E are Type 2 receivers exhibiting an offset threshold, guaranteeing the output state when the bus is idle (bus-idle failsafe) or the inputs are open (open-circuit fail safe). The ADN4696E and ADN4697E are available in half-duplex configurations with an 8-lead SOIC package (ADN4696E) or in full-duplex configurations in a 14-lead SOIC package (ADN4697E).

Features
  • Multipoint LVDS transceivers (low-voltage differential signaling driver and receiver pairs)
  • 200 Mbps (100 MHz) switching rates
  • Supporting bus loads of 30 Ω to 55 Ω
  • Receiver type: Type 2 (ADN4696E/ADN4697E): Threshold offset of 100 mV for open-circuit and bus-idle failsafe
  • Conforms to TIA/EIA-899 standard for M-LVDS
  • Glitch-free power-up/power-down on M-LVDS bus
  • Controlled transition times on driver output
  • Common-mode range: –1 V to +3.4 V, allowing communication with 2 V of ground noise
  • Enhanced PSRR (for system jitter performance)
  • Enhanced differential noise rejection on receiver input
  • Temperature range: –40°C to 85°C
Applications
  • Backplane and cable multipoint data transmission
  • Low power, high speed alternative to shorter RS-485 links
  • Multipoint clock distribution
  • Wireless base station infrastructure
  • Networking routers and switches

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