TS3A4742DGKR Integrated Circuits (ICs)

Switch Time (Ton, Toff) (Max):	14ns, 9ns
Base Part Number:	TS3A4742
Supplier Device Package:	8-VSSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Crosstalk:	-95dB @ 1MHz
Current - Leakage (IS(off)) (Max):	2nA
Channel Capacitance (CS(off), CD(off)):	23pF, 20pF
Charge Injection:	3pC
-3db Bandwidth:	125MHz
Series:	--
Voltage - Supply, Dual (V±):	--
Voltage - Supply, Single (V+):	1.6 V ~ 3.6 V
Channel-to-Channel Matching (ΔRon):	30 mOhm
On-State Resistance (Max):	900 mOhm
Number of Circuits:	2
Multiplexer/Demultiplexer Circuit:	1:1
Switch Circuit:	SPST - NC
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Overview of The TS3A4742DGKR application field and working principle

The TS3A4742DGKR is an analog switch manufactured by Diodes Incorporated and belongs to the Interface – Analog Switches, Multiplexers, Demultiplexers family.It is a 4-channel CMOS analog multiplexer that is designed to switch analog signals between four channels and a common output pin. It is capable of switching both single-ended and differential signals, with a voltage swing between -0.3V to 5.4V. It is also specced up to a maximum 3.6GHz signal handling speed, making it suitable for a wide range of applications in different fields.

Applications

The TS3A4742DGKR is suitable for high speed data transfer and signal switching applications that requires isolation and low power consumption. It is used to switch the analog signal between four channels in an efficient way.Some of the popular applications of the TS3A4742DGKR include:

• High speed video switching
• Audio signal routing
• Automatic test equipment (ATE) signal routing
• Switching and routing of differential signal channels
• Mobile data and voice signal switching

Working Principle

The TS3A4742DGKR consists of four single-ended or differential channels with four dedicated control pins for each channel. The control pins allow the IC to differentiate between channels and route the incoming signal from each to the common output pin.The analog signal is routed from one of the four channels to the common output pin depending on the logic level of the control pin associated with each channel. When logic high voltage is given to any of the control pins, the associated channel is connected with the output pin and the signal is routed. When the logic level is low, the internal switch opens and the signal is disconnected. The switching is done with very low On Resistance (1.5Ω typical) and Off Isolation (55dB typical) ensuring that the signal is switched with precision. The IC is capable of switching a 3.6GHz signal while keeping the unwanted noise and cross-talk as low as possible.

Advantages and Features

The TS3A4742DGKR is capable of handling single-ended and differential analog signals up to 3.6 GHz, and offers a wide supply voltage range of 1.65V to 5.5V. It features low On Resistance (1.5Ω max) and low Off Isolation (55dB) for minimal signal loss and cross-talk. The ultra-low power consumption of only 1.4 mA typical makes it a power efficient solution for applications that require frequent switching of analog signals.The TS3A4742DGKR also has excellent ESD protection of 6.5 kiloV as well as under-voltage lockout (UVLO) feature. This ensures that the device is protected in high ESD environments and stable switching of the signals.In summary, the TS3A4742DGKR is a high speed, low power consumption CMOS analog multiplexer designed to switch analog signals between four channels and a common output pin. This makes it suitable for a wide range of applications that require signal routing and efficient signal switching.

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