Transceivers bring high-definition video via cable infrastructure

6th November 2018
Posted By : Alex Lynn
Transceivers bring high-definition video via cable infrastructure

A transceiver series that enables high-definition (HD) video over existing Unshielded Twisted Pair cables and unshielded connectors has been introduced by Analog Devices. This allows OEMs to upgrade easily from standard-definition cameras to HD cameras and provide the superior resolution and image quality required for today’s automotive camera applications. 

The new ADV7990 and ADV7991 transmitters and ADV7380 and ADV7381 receivers use ADI’s Car Camera Bus (C2B) technology to enable significant savings in weight, bulk, cost, and reduce cable-routing constraints when compared to other automotive link solutions. 

The C2B transceivers are defined and designed specifically for automotive applications, which means that along with supporting excellent visual quality over the unshielded infrastructure, significant care was also taken with on-chip EMC/EMI mitigation techniques enabling full compliance to the rigorous industry mandates for EMC, EMI, and ESD robustness. The performance of the innovative cable-compensation design supports 30m cable runs with multiple in-line connections for resolutions up to two megapixels at 30Hz or one megapixel at 60Hz. 

“C2B has proven to be a very cost-effective solution and provides seamless transition from mainstream low-resolution NTSC to high-definition cameras, and offers significant value to car manufacturers in reducing cable harness cost and weight,” said Motoki Kanamori, General Manager, Advanced Hardware Development Dept, Cockpit Systems Business Unit, Denso Corp. “Denso is excited to work with Analog Devices and use its C2B technology to enable our scalable camera and video-connectivity solutions across vehicle lineups.” 

The ADV7990/91 and ADV7380/81 transceivers feature negligible latency along with uncompressed transmission; the bidirectional control channel uses the same cable and thus incurs no additional costs. These devices support a 75MHz pixel rate (75MHz Y, 75MHz C) ‘frozen frame’ detection while the bidirectional control function supports I2C, interrupt/status and general-purpose I/O (GPIO).

The C2B solution will be showcased at the ADI booth, Hall C4, Booth # 111 at Electronica 2018, 13th to 16th November in Munich, Germany.


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