This Product Selection Guide contains information to help select products in the Analog Switches, Multiplexers, Demultiplexers category on DigiKey.com
Products in this family are used for interconnecting or routing analog signals between multiple available signal paths. Functioning similarly to a traditional electromechanical switch, their solid-state character facilitates electronic control, longer service life, and reduced switching noise compared to electromechanical switching, in trade for added constraints on the amplitude and bias of the signals being switched.
SelectionCharacteristics
Switch Circuit: Describes device function in terms of a number of poles and throws, as is typical for mechanical switches. For more information please see: Switch Basics, Examples of Pole and Throw
Multiplexer/Demultiplexer Circuit: Indicates the channel configuration of a device.
Number of Circuits: Indicates the number of circuits of similar functions that are implemented within the device.
On-State Resistance (Max): Characterizes the maximum resistance of a controlled/switched current path through a device when that path is closed, connected, or “on.” Measured under manufacturer-defined test conditions.
Channel-to-Channel Matching (ΔRon): Difference in on-state resistance between any two channels of the device.
Voltage - Supply, Single (V+): Describes permissible supply voltage span when a single supply voltage is used. Voltages outside this range may damage the device and other system components.
Voltage - Supply, Dual (V±): Describes permissible supply voltage span when dual supplies (positive and negative with respect to a common reference or “ground”) are used. Voltages outside this range may damage the device and other system components.
Switch Time (Ton, Toff) (Max): Characterizes the maximum delay between the application of a control signal and the appearance of the result at a device output.
-3db Bandwidth: Characterizes a device’s high-frequency signal limitations, indicating the frequency at which signals passed through a device would be attenuated by 3dB.
Charge Injection: The amount of electrical charge coupled into the signal path when the state of a control input is changed.
Channel Capacitance (CS(off), CD(off)): Indicates the parasitic capacitances measured at the device’s signal ports.
Current - Leakage (IS(off)) (Max): Maximum current flow from input to output when the connection is “off” or open. Temperature is dependent, though max values are often specified over the full operating temperature range.
Crosstalk: Characterizes parasitic coupling between non-connected signals on the device; may refer to coupling between switched signals, or signals and control inputs.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.
Mounting Type: Indicates how the device is attached.
Package / Case: Indicates the type of protective case used on an electronic component to allow easy handling, installation, and protection. This selection was determined to be the closest industry standard applicable to the supplier device packaging. Typically it is best to check the actual dimensions from the datasheet rather than depend on this terminology when designing your circuit.
Supplier Device Package: This is what the manufacturer calls the package of this device. They are manufacturer specific. It is typically best to use the actual dimensions from the datasheets rather than use this terminology when designing your circuit.
ProductExamples
| MFR PART # | ADG201AKNZ |
|---|---|
| DIGI-KEY PART # | 505-ADG201AKNZ-ND |
| MANUFACTURER | Analog Devices Inc. |
| DESCRIPTION | IC SWITCH SPST-NCX4 90OHM 16DIP |
| DATASHEET | Click Here |
| MFR PART # | 74LVC2G66DP,125 |
|---|---|
| DIGI-KEY PART # | 1727-5993-2-ND - Tape & Reel (TR) |
| MANUFACTURER | Nexperia USA Inc. |
| DESCRIPTION | IC SWITCH SPST-NOX2 10OHM 8TSSOP |
| DATASHEET | Click Here |
| MFR PART # | DG2525DN-T1-GE4 |
|---|---|
| DIGI-KEY PART # | DG2525DN-T1-GE4TR-ND - Tape & Reel (TR) |
| MANUFACTURER | Vishay Siliconix |
| DESCRIPTION | IC SW DPDTX2 500MOHM 16MINIQFN |
| DATASHEET | Click Here |
MediaLinks
Product Training Modules
Switch Fundamentals
iCMOS™ Switches and Multiplexers for Data Acquisition