DG9431EDY-GE3

Voltage - Supply, Dual (V±):	--
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Crosstalk:	--
Current - Leakage (IS(off)) (Max):	100pA
Channel Capacitance (CS(off), CD(off)):	7pF
Charge Injection:	2pC
-3db Bandwidth:	--
Switch Time (Ton, Toff) (Max):	75ns, 50ns
Series:	--
Voltage - Supply, Single (V+):	2.7 V ~ 12 V
Channel-to-Channel Matching (ΔRon):	400 mOhm
On-State Resistance (Max):	30 Ohm
Number of Circuits:	1
Multiplexer/Demultiplexer Circuit:	2:1
Switch Circuit:	SPDT
Part Status:	Active
Packaging:	Tube

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Interface - Analog Switches, Multiplexers, Demultiplexers

DG9431EDY-GE3 are analog switches, multiplexers, and demultiplexers which provide high speed switching between two paths or buses via a control signal. They are designed for low pin count and electrical performance, and are electrically controlled with very low on resistance, fast switching, and low power dissipation.

Application

DG9431EDY-GE3 can be used in a variety digital and analog applications. For example, they can be used in audio and video applications to switch digital signals, such as the switch of digital data strobe pulses. They can also be used in medical and industrial field, such as device isolation and sensors, to switch analog signals between two paths.

Working Principle

DG9431EDY-GE3 works based on bi-directional CMOS switches structure. The device consist of two complementary MOSFETs with series-connected drains and sources. The on/off control signal provides the gate signals for the two MOSFETs. When the control signal is at a low state, the MOSFETs are off and no signal can transfer from one path to the other. When the control signal is at a high state, the MOSFETs turn on and signal from one path to the other can be switched. The on resistance is controlled by the channel length and width, and the on/off performance is controlled by the threshold voltage.

Advantages

The advantages of DG9431EDY-GE3 analog switches, multiplexers, and demultiplexers include high speed, low on resistance, fast switching and low power consumption. The operation voltage of the device is very low, only 2.6V, which allows operation in low voltage condition, and ensures lower power dissipation during operation, which is very beneficial for portable battery powered devices. The device also provides high on resistance, only 0.35-0.75 ohm, this ensures low signal attenuation during switching and also less power loss during switching. The on/off performance of the device is also very fast. The on/off switching speed is 1ns typical. This provides quick transition of signals between two paths. The device is designed for low pin count and very small package, so it is suitable for the applications that need to save space on the board.

Conclusion

DG9431EDY-GE3 is a great option for applications which require analog switching, multiplexing, and demultiplexing. The device provides high speed, low on resistance, fast switching, low power and small package size, which are especially helpful for battery powered devices.

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