AD7865ASZ-2

AD7865ASZ-2 is a fast, low power, four-channel simultaneous sampling 14-bit A/D converter that operates from a single 5V supply. The part contains a 2.4µs successive approximation ADC, four track/hold amplifiers, 2.5V reference, on-chip clock oscillator, signal conditioning circuitry and a high speed parallel interface. The input signals on four channels are sampled simultaneously thus preserving the relative phase information of the signals on the four analogue inputs. The part allows any subset of the four channels to be converted in order to maximize the throughput rate on the selected sequence. The channels to be converted can be selected either via hardware (channel select input pins) or via software (programming the channel select register). It is used in applications such as AC motor control, uninterruptible power supplies, industrial power meters/monitors, data acquisition systems, communications.

• Four simultaneously sampled inputs, four track/hold amplifiers
• Track/hold acquisition time is 0.35μs maximum at (VDD = 5V, ±5%)
• HW/SW select of channel sequence for conversion
• High speed parallel interface which also allows interfacing to 3V processors
• Overvoltage protection on analogue inputs
• 3MHz maximum -3dB full power bandwidth at (VDD = 5V, ±5%)
• Unipolar offset error is ±10LSB maximum at (VDD = 5V, ±5%)
• Total harmonic distortion is 86dB maximum at (VDD = 5V, ±5%)
• VREF OUT temperature coefficient is 25ppm/°C typical at (VDD = 5V, ±5%)
• Operating temperature range from -40°C to +85°C, 44-lead plastic quad flatpack package

Uwagi

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