The ADG528F is a CMOS analog multiplexer, with the comprising eight single channels. The multiplexer provides fault protection. Using a series n-channel, p-channel, n-channel MOSFET structure, both device and signal source protection is provided in the event of an overvoltage or power loss. The multiplexer can withstand continuous overvoltage inputs from -40 V to +55 V. During fault conditions, the multiplexer input (or output) appears as an open circuit and only a few nanoamperes of leakage current will flow. This protects not only the multiplexer and the circuitry driven by the multiplexer, but also protects the sensors or signal sources which drive the multiplexer.
The ADG528F switch one of eight inputs to a common output as determined by the 3-bit binary address lines A0, A1 and A2. The ADG528F has on-chip address and control latches that facilitate microprocessor interfacing. An EN input on each device is used to enable or disable the device. When disabled, all channels are switched OFF.
- Low on resistance (300 O typical)
- Low Power Dissipation (3.3 mW Max)
- Fault and overvoltage protection (- 40 V to + 55 V)
- All Switches off with power supply off
- Analog output of on channel clamped within power supplies if an overvoltage occurs
- Latch-up proof construction
- Break-before-make switching action
- TTL and CMOS compatible inputs
