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ADG738:  CMOS, Low Voltage, 3-Wire, Serially Controlled, Matrix Switch

Product Details


The ADG738 is a CMOS analog matrix switch with a serially-controlled 3-wire interface. The ADG738 is an 8-channel matrix switch. On resistance is closely matched between switches and very flat over the full signal range.

The ADG738 utilize a 3-wire serial interface that is compatible with SPI™, QSPI™, MICROWIRE®, and some DSP interface standards. The output of the input shift register, DOUT, enables a number of these parts to be daisy-chained. On power-up, the internal input shift register contains all zeros and all switches are in the off state.

Each switch conducts equally well in both directions when on, making these parts suitable for both multiplexing and demulti-plexing applications. As each switch is turned on or off by a separate bit, these parts can also be configured as a type of switch array, where any, all, or none of the eight switches may be closed at any time. The input signal range extends to the supply rails.

All channels exhibit break-before-make switching action, preventing momentary shorting when switching channels.

The ADG738 is available in 16-lead TSSOP packages.

Product Highlights
  1. 3-Wire Serial Interface.
  2. Single Supply Operation. The ADG738 is fully specified and guaranteed with 3 V and 5 V supply rails.
  3. Low On Resistance, 2.5 Ω typical.
  4. Any configuration of switches may be on or off at any one time.
  5. Guaranteed Break-Before-Make Switching Action.
  6. Small 16-lead TSSOP Package.

Applications

  • Data Acquisition Systems
  • Communication Systems
  • Relay Replacement
  • Audio and Video Switching

FEATURES and BENEFITS

  • 3-wire serial interface
  • 2.7 V to 5.5 V single supply
  • 2.5 Ω on resistance
  • 0.75 Ω on-resistance flatness
  • 100 pA leakage currents
  • Single 8-to-1 multiplexer ADG738
  • Power-on reset
  • TTL/CMOS-compatible
  • Qualified for automotive applications

Functional Block Diagram for ADG738

Documentation

Title Content Type File Type
ADG738/ADG739: CMOS, Low Voltage, 3-Wire Serially-Controlled, Matrix Switches Data Sheet (Rev A, 11/2012) (pdf, 157 kB) Data Sheets PDF
AN-1024: How to Calculate the Settling Time and Sampling Rate of a Multiplexer  (pdf, 210 kB) Application Notes PDF
CN-0287: Fully Isolated 4-Channel, Temperature Measurement Circuit Optimized for Performance, Robustness, and Low Cost  (pdf, 696 kB) Circuit Note 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

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Price, packaging, availability

ADG738 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADG738BRU Status: Production 16 ld TSSOP 16 Ind Tube, 96 $2.29 $1.87 N  Material Info PCN Purchase
ADG738BRUZ Status: Production 16 ld TSSOP 16 Ind Tube, 96 $1.97 $1.62 Y  Material Info PCN Purchase Sample
ADG738BRUZ-REEL Status: Production 16 ld TSSOP 16 Ind Reel, 2500 - $1.62 Y  Material Info PCN Purchase
ADG738BRUZ-REEL7 Status: Production 16 ld TSSOP 16 Ind Reel, 1000 - $1.62 Y  Material Info PCN Purchase
ADG738WBRUZ-REEL Status: Production 16 ld TSSOP 16 Ind Reel, 2500 - $1.86 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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