AD7865ASZ-1

The AD7865ASZ-1 is a high-speed, low-power, four-channel simultaneous sampling 14-bit analog-to-digital converter (ADC) that operates from a single +5V supply. This device is designed for applications requiring fast and accurate analog-to-digital conversion, such as AC motor control, uninterruptible power supplies, industrial power meters/monitors, and data acquisition systems.

The AD7865ASZ-1 incorporates a 2.4-microsecond successive approximation ADC, four track/hold amplifiers, a 2.5V reference voltage source, an on-chip clock oscillator, signal conditioning circuitry, and a high-speed parallel interface. The four analog inputs can be sampled simultaneously, preserving the relative phase information of the signals on all four inputs. This allows for accurate and reliable conversion of analog signals to digital outputs.

The AD7865ASZ-1 accepts a wide range of analog input voltages, including ±10V, ±5V, ±2.5V, 0V to 2.5V, and 0V to 5V. Additionally, the analog inputs are protected against overvoltage, allowing input voltages up to ±20V (within certain limits) without damaging the device or affecting ongoing conversions.

The conversion time per channel is 2.4 microseconds, and the track/hold acquisition time is 0.35 microseconds. The device also offers hardware/software selection of the channel sequence for conversion, providing flexibility in configuring the conversion process.

The AD7865ASZ-1 operates in two modes: Reading Between Conversions and Reading after the Conversion Sequence. These modes allow for efficient data acquisition and processing.

The device is packaged in a 44-lead MQFP package and is designed for operation over a temperature range of -40°C to 85°C. It is compliant with RoHS3 standards and has a moisture sensitivity level of 3 (168 hours).

In summary, the AD7865ASZ-1 is a versatile and high-performance ADC that offers fast conversion speeds, low power consumption, and a wide range of analog input voltages. Its simultaneous sampling capability and overvoltage protection make it suitable for a variety of applications requiring accurate and reliable analog-to-digital conversion.