High Speed, Triple Differential Receiver with Comparators
The AD8145 is a triple, low cost, differential-to-single-ended receiver specifically designed for receiving red-green-blue (RGB) video signals over twisted pair cable or differential printed circuit board (PCB) traces. It can also be used to receive any type of analog signal or high speed data transmission. Two auxiliary comparators with hysteresis are provided that can be used to decode video sync signals, which are encoded on the received common-mode voltages, to receive digital signals or as general-purpose comparators. The AD8145 can be used in conjunction with the AD8133 or AD8134 triple differential drivers to provide a complete low cost solution for RGB over Category 5 UTP cable applications, including KVM.
The excellent common-mode rejection (69 dB @ 10 MHz) of the AD8145 allows for the use of low cost, unshielded twisted pair cables in noisy environments.
The AD8145 can be configured for a differential-to-single-ended gain of 1 or 2 by connecting the GAIN_x pin of each channel to its respective output (G = 1) or connecting it to a reference voltage (G = 2), which is normally grounded.
A REF_x input is provided on each channel that allows designers to level shift the output signals.
The AD8145W is the automotive grade version that is qualified per the AEC-Q100 for use in automotive applications. See the Automotive Products section for more details.
The AD8145 is available in a 5 mm × 5 mm, 32-lead LFCSP and is rated to work over the extended industrial temperature range of −40°C to +105°C.
- RGB video receivers
- YPbPr video receivers
- Keyboard, video, mouse (KVM)
- Unshielded twisted pair (UTP) receivers
- Automotive driver assistance (AD8145W)
- Automotive Infotainment (AD8145W)
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
The AD8143 and AD8145 can be used in conjunction with the AD8133 and AD8134 triple differential drivers to provide a complete, low cost solution for RGB signals over Category-5 (Cat-5) UTP cable applications, including keyboards, videos, and mouses (KVM). The excellent common-mode rejection of both the AD8143 and AD8145 allows the use of low cost, unshielded, twisted pair cables in noisy environments.
The AD8143 has a wide power supply range from single +5 V supply to ±12 V, which allows a wide common-mode range. The wide common-mode input range of the AD8143 maintains signal integrity in systems where the ground potential is a few volts different between the driver and receiver ends without using isolation transformers. The AD8143 is stable at a gain of 1. Closed-loop gain is easily set using external resistors.
The AD8145 can be configured for a differential to single-ended gain of 1 or 2 by connecting the GAIN_x pin of each channel to the respective output (gain = 1), or by connecting it to a reference voltage (gain = 2), which is normally grounded. On the AD8145, a REF_x input is provided on each channel that allows designers to level shift the output signals.
Both the AD8143 and AD8145 are available in a 5 mm × 5 mm, 32-lead LFCSP. The AD8143 is rated to work over the extended industrial temperature range of −40°C to +85°C, while the AD8145 can work over the extended industrial temperature range of −40°C to +105°C. Only the AD8145 has an automotive grade version that is qualified for use in automotive applications.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.