Date: 15/06/2012

Video amplifiers with short-to-battery protection from ADI for automotive applications

Analog Devices, Inc. (ADI) has introduced a series of high-speed video amplifiers that integrate short-to-battery protection and fault detection for analog video systems in automotive safety and infotainment applications. The new integrated video amplifiers reduce board space and are suitable for space-constrained applications such as rear-view cameras.

The ADA4830-1 (single-channel) and ADA4830-2 (dual-channel) video difference amplifiers, and ADA4432-1 (single-ended output) and ADA4433-1 (differential output) analog video filter amplifiers, provide a complete chipset for transporting analog video signals over shielded and unshielded twisted pair cables. The video amplifiers can be used independently to provide receiver (ADA4830-1/2) and transmitter (ADA4432-1/33-1) functions as part of a video signal chain.

These amplifiers feature integrated short-to-battery protection up to 18 V, short-to-ground protection, fault detection, wide common-mode voltage ranges and robust ESD (electro-static discharge) performance.

The ADA4830-1 and ADA4830-2 video difference amplifiers are designed for use as receivers of CVBS (Composite Video Blanking and Synchronous) signals in standard-definition PAL/NTSC video applications.

Features of ADA4830-1/2:
1. Qualified for automotive applications
2. Short-to-battery and short-to-ground protection (input)
3. Short-to-battery flag
4. Input: single-ended or differential
5. Input common-mode voltage range: ±8.5 V
6. CMRR @ 7 MHz: 55 dB
7. Supply voltage: 2.9 V to 5 V
8. Temperature range: -40°C to 125°C
9. ESD tolerance to up +8-kV human body model (HBM)

The ADA4432-1 and the ADA4433-1 analog video filter amplifiers are designed as transmitters for automotive analog video filtering applications. They feature the same 18-V short-to-battery protection s(output), fault flags and +8-kV HBM tolerance as the ADA4830. The devices include a high-order video filter with a -3dB cutoff frequency at 10 MHz.

Features of ADA4432-1/ADA4433-1:

1. Qualified for automotive applications
2. Short-to-battery and short-to-ground protection (output)
3. Short-to-battery flag
4. Output: single-ended (ADA4432-1) and differential (ADA4433-1)
5. Fifth order video filter with cutoff at 10 MHz
6. 45 dB of out-of-band rejection @ 27 MHz
7. Supply voltage: 2.6 V to 3.6 V
8. Temperature range: -40°C to 125°C

Product Sample and full production availability Price each per 1K units Packaging
ADA4830-1 Now $0.69 8-lead LFCSP 3 x 3 mm
ADA4830-2 Now $0.89 16-lead LFCSP 3 x 3 mm
ADA4432-1 Now $0.53 8-lead LFCSP 3 x 3 mm
ADA4432-1 Now $0.47 6-lead SOT 23 3 x 3 mm
ADA4433-1 Now $0.89 8-lead LFCSP 3 x 3 mm