Power Off Protection ±5 V, +12V, Quad SPST Switches with 5Ω On Resistance
The ADG4612 & ADG4613 contain four independent singlepole/ single-throw (SPST) switches. The ADG4612 switches are turned on with Logic 1 on the appropriate control input. The ADG4613 has two switches with digital control logic similar to that of the ADG4612; the logic is inverted on the other two switches. Each switch conducts equally well in both directions when on and has an input signal range that extends to the supplies. The ADG4613 exhibits break-before-make switching action for use in multiplexer applications.
When no power supplies are present the switch remains in the OFF condition and the switch inputs are high impedance inputs. This ensures that no current flows that may damage the switch. This is very useful in application where analog signals may be present at the switch inputs before power or where the user has no control over the Power Supply Sequence.
In the off condition, signal levels up to 16V are blocked. Also, if the analog input signal levels exceed VDD by VT then the switch will turn off.
The ultralow on resistance of these switches make them ideal solutions for data acquisition and gain switching applications where low on resistance and distortion is critical. The on resistance profile is very flat over the full analog input range ensuring excellent linearity and low distortion when switching audio signals.
- Hot swap applications
- Data acquisition systems
- Battery-powered systems
- Automatic test equipment
- Communication systems
- Relay Replacement
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This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
This user guide describes the evaluation board for the ADG4612 quad SPST switches.
Figure 1 shows the EVAL-ADG4612EBZ. The 16-lead TSSOP ADG4612 is soldered onto the center of the evaluation board and is designated as U2.
The evaluation kit contains a fully fitted printed circuit board (PCB). Full details about the part are available in the ADG4612 data sheet, which should be consulted when using the EVALADG4612EBZ.
When power supplies are not present, the switch remains off, and the switch inputs are high impedance, which ensures that current does not damage the switch. This is useful in applications where analog signals can be present at the switch inputs before power, or where the user has no control over the power supply sequence.
When off, signal levels up to 16 V are blocked. In addition, if the analog input signal levels exceed VDD by VT, the switch turns off.
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.
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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.