10 Aug 2012
Analog Devices multiplexers offer high robustness, low charge injection and low leakage
US-based Analog Devices has introduced two multiplexers that promise to guarantee latch-up prevention in high-voltage industrial applications operating up to ±22 V.
The high current latch-up state can persist until the power supply is turned off, leading to device failure.
According to Ananlog, the ultra-low (0.35 pC) charge injection of the new multiplexers makes them suitable for data acquisition and sample-and-hold applications, where low glitch and fast settling time are required.
A low leakage (20 pA) feature ensures high accuracy and resolution, which is an advantage in audio and video signal routing.
The ADG5206 and ADG5207 multiplexers are the latest additions to ADI’s switch and multiplexer protection products portfolio, which also includes the ADG5212 and ADG5213—the industry lowest charge injection and low leakage latch-up proof quad switches.
ADG5206 and ADG5207 features - Trench isolation between the N-channel and P-channel transistors of each CMOS switch provides guaranteed latch-up protection
Operate from ±9 V to ±22 V in applications where the analogue signal is bipolar and from +9 V to +40 V in applications where the analogue signal is unipolar
Features 3.5-pF off-source capacitance, 60-MHz -3dB bandwidth, ultra-low charge injection (0.35 pC @ 0 V) and source off leakage (400 pA @ 125°C) performance.
Operate equally well in both directions when ON and have an input signal range that extends to the power supplies. In the OFF condition, signal levels up to the supplies are blocked. The switches exhibit break-before-make switching action for use in multiplexer applications.
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