Overview
Features and Benefits
- All switches off with power supply off
- Latch-up proof construction
- Low On Resistance (270 Ω typical)
- Fast Switching Times
ton 230 ns maximum
toff 130 ns maximum
- Analog output of on channel clamped within power supplies if an overvoltage occurs
- 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 supplies 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
- 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.
- On channel saturates while fault exists.
- Low RON.
- Fast switching times.
- Break-before-make switching. Switches are guaranteed break-before-make so that input signals are protected against momentary shorting.
- 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
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)
Documentation & Resources
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Switches and Multiplexers Product Selection Guide5/9/2008PDF614 K
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Ask The Applications Engineer—40: Switch and Multiplexer Design Considerations for Hostile Environments5/1/2011 Analog Dialogue
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Precision Signal-Processing and Data-Conversion ICs for PLCs Now Have More Performance at Less Power, Size, and Cost8/1/2006 Analog Dialogue
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Data-acquisition system uses fault protection4/15/2004
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Temperature monitor measures three thermal zones12/11/2003
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Enhanced Multiplexing for MEMS Optical Cross Connects8/1/2003
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Winning the Battle Against Latchup in CMOS Analog Switches10/1/2001 Analog Dialogue
Tools & Simulations
SPICE Models
ADG508F SPICE Macro Models
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.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADG508FBNZ | Material Declaration | Reliability Data | 16-Lead PDIP | |
| ADG508FBRNZ | Material Declaration | Reliability Data | 16-Lead SOIC | |
| ADG508FBRNZ-REEL7 | Material Declaration | Reliability Data | 16-Lead SOIC | |
| ADG508FBRUZ | Material Declaration | Reliability Data | 16-Lead TSSOP | |
| ADG508FBRUZ-REEL7 | Material Declaration | Reliability Data | 16-Lead TSSOP | |
| ADG508FBRWZ | Material Declaration | Reliability Data | 16-Lead SOIC Wide | |
| ADG508FBRWZ-REEL | Material Declaration | Reliability Data | 16 ld SOIC | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
ADG508F Discussions
Sample & Buy
Ordering FAQs
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Lead Times
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Sampling
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Evaluation Boards
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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.