Texas Instruments has introduced a series of CMOS analog switches that stand out for their unique features, particularly their latch-up immunity, which sets them apart in the realm of analog switch technology. The TMUX8211, TMUX8212, and TMUX8213 models are designed to provide reliable performance in challenging environments where robustness is crucial.
These analog switches are equipped with four independently controllable 1:1 single-pole single-throw (SPST) switch channels, making them versatile for a wide range of applications. Whether operating with dual supplies, a single supply, or asymmetric supplies, these devices can handle a maximum supply voltage of 100 V, catering to diverse voltage requirements in different systems.
One key advantage of the TMUX821x series is their consistent analog parametric performance across the supply voltage range. This ensures reliable signal integrity and accuracy regardless of the operating conditions, enhancing the overall stability of the system. Moreover, the bidirectional support for analog and digital signals on the source and drain pins adds flexibility to the device's functionality.
The inclusion of failsafe logic circuitry in these analog switches is a notable feature that enhances the overall reliability of the devices. By allowing the logic pins to receive voltages before the supply pin, potential damage to the device is mitigated, ensuring a robust operation under various circumstances. This feature is essential for preventing malfunctions and safeguarding the longevity of the switches.
Furthermore, the latch-up immunity offered by these analog switches is a critical aspect that enhances their suitability for use in harsh environments. By preventing high-current events between parasitic structures within the device, the risk of latch-up conditions and subsequent device failure is significantly reduced. This feature ensures the long-term durability and performance of the switches in demanding applications where reliability is paramount.
In conclusion, Texas Instruments' CMOS analog switches, specifically the TMUX8211, TMUX8212, and TMUX8213 models, represent a cutting-edge solution for applications requiring robust analog switch technology. With their latch-up immunity, failsafe logic circuitry, and consistent performance characteristics, these switches excel in challenging environments, offering unparalleled reliability and functionality for diverse engineering needs.
High supply voltage ranges: ±10 V to ±50 V (dual supply), 10 V to 100 V (single supply), and asymmetric dual supply operation
Consistent parametric across supply voltages
Latch-up immune
High continuous current: 200 mA
Low crosstalk: -110 dB
Low input leakage: 10 pA
Low on-resistance flatness: 0.05 Ω
Low on-resistance: 5 Ω
Low capacitance: 12 pF
Removes the need for an additional logic rail (VL)
Logic: 1.8 V
Failsafe logic: up to 48 V independent of the supply
Integrated pull-down resistor on the logic pins
Bidirectional signal path
Wide operating temperature range (TA): -40°C to +125°C
Packages: industry-standard TSSOP and smaller WQFN
High-voltage bidirectional switching
Analog and digital signal switching
Semiconductor test equipment
LCD test equipment
Battery test equipment
Data acquisition systems (DAQ)
Digital multi-meters (DMM)
Factory automation and controls
Programmable logic controllers (PLCs)
Analog input modules
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