Alternative Parts

  • ADG5248F
    ADG5248F

    Fault Detection and Protection Feature Set, Inside Rail Clamping

  • ADG5208F
    ADG5208F

    Fault Detection and Protection Feature Set

Overview

Features and Benefits

  • All switches off with power supply off
  • Analog output of on channel clamped within power supplies if an overvoltage occurs
  • Latch-up proof construction
  • Low On Resistance (270 Ω typical)
  • Fast Switching Times
    ton 230 ns maximum
    toff 130 ns maximum
  • Low power dissipation (3.3 mW maximum)
  • Fault and overvoltage protection (−40 V to +55 V)
  • Break-before-make construction
  • TTL and CMOS compatible inputs

Product Details

The ADG508F and ADG509F are CMOS analog multiplexers, with the ADG508F comprising eight single channels and the ADG509F comprising four differential channels. These multiplexer provides fault protection. Using a series n-channel, p-channel, n-channel MOSFET structure, both device and signal source protection is provided in the event of an overvoltage or power loss. The multiplexer can withstand continuous overvoltage inputs from -40 V to +55 V. During fault conditions with power suppplies off, the multiplexer input (or output) appears as an open circuit and only a few nanoamperes of leakage current will flow. This protects not only the multiplexer and the circuitry driven by the multiplexer, but also protects the sensors or signal sources that drive the multiplexer.

The ADG508F switches one of eight inputs to a common output as determined by the 3-bit binary address lines A0, A1 and A2. The ADG509F switches one of four differential inputs to a common differential output as determined by the 2-bit binary address lines A0 and A1. An EN input on each device is used to enable or disable the device. When disabled, all channels are switched OFF.

Product Highlights

  1. Fault protection. The ADG508F/ADG509F can withstand continuous voltage inputs from −40 V to +55 V. When a fault occurs due to the power supplies being turned off, all the channels are turned off and only a leakage current of a few nanoamperes flows.
  2. On channel saturates while fault exists.
  3. Low RON.
  4. Fast switching times.
  5. Break-before-make switching. Switches are guaranteed break-before-make so that input signals are protected against momentary shorting.
  6. Trench isolation eliminates latch-up. A dielectric trench separates the p and n-channel MOSFETs thereby preventing latch-up.

Applications

  • Existing multiplexer applications (both fault-protected and nonfault-protected)
  • New designs requiring multiplexer functions

Product Lifecycle icon-recommended Production

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.

Evaluation Kits (1)

Tools & Simulations

Design Tools

ADIsimPE Linear and Mixed-Signal Circuit Simulator – Personal Edition

ADIsimPE, which is powered by SIMetrix/SIMPLIS, is a circuit simulation suite optimized for the design and development of analog and mixed signal circuits. SIMetrix mode is ideal for the simulation of general non-switching circuits. It provides full Pspice compatibility for use with industry-standard SPICE models. SIMPLIS (SIMulation Piecewise-Linear System) mode simulates the operation of switching circuits with vastly improved robustness, speed, and accuracy compared to standard SPICE. It is particularly useful for switching power supply, PLLs, and ADC/DAC applications.

Design Resources

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.

PCN-PDN Information

Discussions

ADG508F Discussions

Re: ADG508F ESD rating
17 week(s) ago in Switches/Multiplexers
ADG508F ESD rating
18 week(s) ago in Switches/Multiplexers
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Evaluation Boards Pricing displayed is based on 1-piece.
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.