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ADA4830-1:  High Speed Difference Amplifier with Input Short to Battery Protection

Product Details

Product Status:Recommended for New Designs

The ADA4830-1 (single) and ADA4830-2 (dual) are monolithic, high speed difference amplifiers that integrate input overvoltage (short-to-battery) protection of up to 18 V with a wide input common-mode voltage range and excellent ESD robustness. They are intended for use as receivers for differential or pseudo differential CVBS and other high speed video signals in harsh, noisy environments such as automotive infotainment and vision systems. The ADA4830-1 and ADA4830-2 combine high speed and precision, which allows for accurate reproduction of CVBS video signals, yet rejects unwanted common-mode error voltages.

The short to battery protection that is integrated into the ADA4830-1 employs fast switching circuitry to clamp and hold internal voltage nodes at a safe level when an input overvoltage condition is detected. This protection allows the inputs of the ADA4830-1 to be directly connected to a remote video source, such as a rearview camera, without the need for large expensive series capacitors. The ADA4830-1 can withstand direct short to battery voltages as high as 18 V on its input pins.

The ADA4830-1 is designed to operate at supply voltages as low as 2.9 V and as high as 5.5 V, using only 6.8 mA of supply current per channel. The device provides true single-supply capability, allowing the input signal to extend 8.5 V below the negative rail and to 8.5 V above ground on a single 5 V supply. At the output, the amplifier can swing to within 250 mV of either supply rail into a 150 Ω load.

The ADA4830-1 presents a gain of 0.5 V/V at its output. This is designed to keep the video signal within the allowed range of the video decoder, which is typically 1 V p-p or less.

The ADA4830-1 is available in a 3 mm × 3 mm, 8-lead LFCSP package and is specified for operation over the automotive temperature range of −40°C to +125°C.

APPLICATIONS

  • Automotive vision systems
  • Automotive infotainment
  • Surveillance systems

FEATURES and BENEFITS

  • Input overvoltage (short to battery) protection of up to 18 V
  • Short to battery output flag for wire diagnostics
  • Wide input common mode range with single 5 V supply
  • High-performance video amplifier with 0.5 V/V gain
    -- −3 dB bandwidth of 84 MHz
    -- 220 V/µs slew rate (2 V step)
  • Excellent video specifications
  • 0.1 dB flatness to 20 MHz
  • SNR of 73 dB to 15 MHz
  • Differential gain of 0.1%
  • Differential phase of 0.1°
  • Power-down mode
  • Space saving 3 mm × 3 mm LFCSP package
  • Wide operating temperature range: −40°C to +125°C

Functional Block Diagram for ADA4830-1

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ADA4830-1 Model Options
Price Table Help

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.

ADA4830-1 Evalution Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADA4830-1BCP-EBZ Status: Production 8-Lead LFCSP Evaluation Board $51.71 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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