21ic Analog Devices, Inc. recently introduced a series of high-speed video amplifiers, the ADA4830-1/2 and ADA4432-1/33-1, which integrate battery short-circuit protection and fault detection for analog video in automotive safety and infotainment applications. system. ADI's new integrated video amplifiers are available in a 3mm x 3mm package, saving at least 80% board space compared to a fully discrete solution, making them ideal for space-constrained applications such as rear-view cameras. The ADA4830-1 (single) and ADA4830-2 (dual) video difference amplifiers as well as the ADA4432-1 (single-ended output) and ADA4433-1 (differential output) analog video filter amplifiers provide designers with shielding through Shielded twisted pair cable transmits a complete chipset of analog video signals. The above video amplifiers can also be used separately to provide the receiver (ADA4830-1/2) and transmitter (ADA4432-1/33-1) functions as part of the video signal chain. All of these new amplifiers feature up to 18 V battery short-circuit protection, ground short-circuit protection, fault detection, wide common-mode voltage range, and robust ESD (electrostatic discharge) performance.
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Curt Ventola, Marketing and Application Engineering Manager at ADI's High-Speed ​​Signal Conditioning Division, said: "Whether running video from a rear-view camera or a rear-seat display, fault-tolerant video signal chains are prone to catastrophic failures and troubleshooting. Repairs are expensive and time consuming. ADI's new video amplifiers are fully qualified for harsh and demanding automotive applications, providing the necessary protection for DC and transient overvoltages, ESD and large common-mode voltages."
More information on the ADA4830-1/-2 video difference amplifier
The ADA4830-1 and ADA4830-2 high speed video difference amplifiers are designed for use as receivers for CVBS (Composite Video Blanking and Synchronization) signals in standard definition PAL/NTSC video applications. In addition to integrating up to 18 V of battery short-circuit (input) protection on a single 3 V to 5 V supply, the new differential amplifier also has a battery short-circuit flag that indicates if there is a fault condition at the input. In addition, the ADA4830-1 and ADA4830-2 offer excellent ESD tolerance up to +8-kV Human Body Model (HBM) and a wide input common-mode voltage range that extends to -8.5 V below ground. The common mode rejection ratio at MHz is 55 dB.
More information on the ADA4432-1 and ADA4433-1 analog video filter amplifiers
The ADA4432-1 (single-ended output) and ADA4433-1 (differential output) analog video filter amplifiers are designed for use as transmitters in automotive analog video filtering applications. These devices have the same 18 V battery circuit protection (output) function, fault flag function and +8-kV HBM withstand resistance as the ADA4830. In addition, Analog Devices' new video filter amplifiers feature continuous output ground short-circuit protection and excellent video specifications. The ADA4432-1 and ADA4433-1 incorporate a high-order video filter with a −3 dB cutoff frequency of 10 MHz and 45 dB rejection at 27 MHz.
Main features of ADA4830, ADA4432-1 and ADA4433-1:
• ADA4830-1/2: Video Difference Amplifier/Receiver
o Fully qualified for automotive applications
o Battery short and ground short circuit protection (input)
o Battery short circuit sign
o Input: single-ended or differential
o Input common mode voltage range: ± 8.5 V
o CMRR at 7 MHz: 55 dB
o Power supply voltage: 2.9 V to 5 V
o Temperature range: -40 ÌŠC to 125 ÌŠC
• ADA4432-1/ADA4433-1: Analog Video Filter Amplifier/Transmitter
o Fully qualified for automotive applications
o Battery short circuit and ground short circuit protection (output)
o Battery short circuit sign
o Output: single-ended (ADA4432-1) and differential (ADA4433-1)
o Fourth-order video filter with cutoff frequency at 10 MHz
o Out-of-band rejection ratio at 27 MHz: 45 dB
o Power supply voltage: 2.6 V to 3.6 V
o Temperature range: -40 ÌŠC to 125 ÌŠC
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