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ADG528F:  4-Channel/8-Channel Fault-Protected Analog Multiplexers

Product Details


The ADG528F is a CMOS analog multiplexer, with the comprising eight single channels. The 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, 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 which drive the multiplexer.

The ADG528F switch one of eight inputs to a common output as determined by the 3-bit binary address lines A0, A1 and A2. The ADG528F has on-chip address and control latches that facilitate microprocessor interfacing. 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 ADG528F 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 turns off 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-channel and n-channel MOSFETs thereby preventing latch-up.

Applications

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

FEATURES and BENEFITS

  • Low on resistance (300 Ω typical)
  • Fast Switching Times
    ton 250 ns max
    toff 250 ns max
  • Low Power Dissipation (3.3 mW Max)
  • Fault and overvoltage protection (- 40 V to + 55 V)
  • All Switches off with power supply off
  • Analog output of on channel clamped within power supplies if an overvoltage occurs
  • Latch-up proof construction
  • Break-before-make switching action
  • TTL and CMOS compatible inputs

Functional Block Diagram for ADG528F

Documentation

Title Content Type File Type
ADG528F: 8-Channel Fault-Protected Analog Multiplexer Data Sheet (Rev F, 07/2011) (pdf, 280 kB) Data Sheets PDF
AN-1024: How to Calculate the Settling Time and Sampling Rate of a Multiplexer  (pdf, 210 kB) Application Notes PDF
AN-32: Single Supply Operation of JFET Multiplexers  (pdf, 87 kB) Application Notes PDF
Data-acquisition system uses fault protection
By Catherine Redmond, Analog Devices, Inc. (EDN, 4/15/2004)
Technical Articles HTML
CMOS Switches Offer High Performance in Low Power, Wideband Applications  (pdf, 320 kB)
by Theresa Corrigan and Ray Goggin, Analog Devices, Inc. (High Frequency Electronics, February 2004)
Technical Articles PDF
Temperature monitor measures three thermal zones
by Susan Pratt, Analog Devices, Inc. (EDN, 12/11/03)
Technical Articles HTML
Enhanced Multiplexing for MEMS Optical Cross Connects
by James Caffrey (Fiberoptic Product News, 8/2003)
Technical Articles HTML
Switches and Multiplexers Product Selection Guide  (pdf, 1462 kB) Product Selection Guide PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADG528F SPICE Macro-Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADG528F Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADG528FBP Status: Production 20 ld PLCC 20 Ind Tube, 49 $5.30 $4.52 N  Material Info PCN Purchase
ADG528FBPZ Status: Production 20 ld PLCC 20 Ind Tube, 49 $4.59 $3.91 Y  Material Info Notify Me Purchase
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.


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