AD363

The AD363 and AD364 are complete 16-channel data acquisition systems which condition and subsequently convert an analog voltage into digital form. Each system consists of two devices, an analog input stage (AIS) and an analog-to-digital converter (ADC). The AIS includes a two 8-channel mulitplexers, a channel address register, a unity gain instrumentation amplifier, and a sample-hold amplifier.The multiplexers may be connected to the instrumentation amplifier in either an 8-channel differential or 16-channel single ended configuration. A unique feature of these products is an internal user controlled switch which connects the multiplexers in either single-ended or differential mode.This allows a single device to perform in either mode with hard-wire programming and permits interfacing a mixture of single-ended and differential signals by dynamically switching the input mode control.

The AD363 and AD364 differ in ADC performance. Each ADC is a complete 12-bit successive approximation converter including an internal clock and precision reference. Active laser trimming results in maximum linearity errors of ±0.012% with conversion times of 25 µs (AD363) or 32 µS (AD364). The hybrid AD364-ADC has five user selectable input ranges (±2.5, ±5.0, ±10.0, 0 to +5, and 0 to +10 volts) and includes a high impedance buffer amplifier. The AD364-ADC is a monolithic converter with 3-state output buffer circuitry for direct interfac to an 8-, 12-, or 16-bit processor bus and three user selected input ranges (±5, ±10, and 0 to +10 volts).

Both products are specified for operation over both the commercial (0°C to +70°C) and military (-55°C to +125°C) temperature ranges. The AD363 and AD364 are available with environmental screening. Please contact the factory or nearest sales office for details.