ADI AD1362KD

The AD1362 is a complete, precision 16-channel data acquisition system. The device contains two 8-channel multiplexers, a differential amplifier, a sample-and-hold circuit with a high-speed output amplifier, a channel address latch, and control logic. The multiplexers can be connected to the differential amplifier, configured for either 8-channel differential or 16-channel single-ended mode. A unique feature of the AD1362 is an internal user-controllable analog switch that connects the multiplexers in either single-ended or differential mode. This allows a single device to operate in both modes without hardwired programming, and permits interfacing a mix of single-ended and differential sources through dynamic switching of input mode control. The sample-and-hold mode control is designed to connect directly to the "status" output of an ADC, so that when a convert command is issued to the ADC, the sample-and-hold is automatically placed in "hold" mode. Each AD1362 contains an internal precision hold capacitor. The AD1362's output amplifier is capable of driving the unbuffered analog inputs of most high-speed 12-bit successive approximation ADCs. As a result, the interface requires only two simple connections with no additional components.