AD7891ASZ-1REEL

AD7891ASZ-1REEL is an LC²MOS 8-channel, 12bit, high-speed data acquisition system. The part contains an input multiplexer, an on-chip track/hold amplifier, a high-speed 12bit ADC, a 2.5V reference, and a high-speed interface. It provides the option of either a parallel or serial interface structure determined by the MODE pin. The part has standard control inputs and fast data access times for both the serial and parallel interfaces, ensuring easy interfacing with modern microprocessors, microcontrollers, and digital signal processors. In addition to the traditional DC accuracy specifications, such as linearity, full-scale, and offset errors, the part is also specified for dynamic performance parameters, including harmonic distortion and signal-to-noise ratio. It is used in applications such as data acquisition systems, motor control, mobile communication base stations, and instrumentation.

• 8 single-ended analogue input channels, overvoltage protection on each channel
• Parallel and serial interface, on-chip track/hold amplifier, on-chip reference
• Signal-to-(noise + distortion) ratio is 70dB minimum at (VDD = 5V ±5%, AGND = DGND = 0V)
• Total harmonic distortion is -78dB maximum at (VDD = 5V ±5%, AGND = DGND = 0V)
• Relative accuracy is ±1LSB maximum at (VDD = 5V ±5%, AGND = DGND = 0V)
• Differential nonlinearity is ±1LSB maximum at (VDD = 5V ±5%, AGND = DGND = 0V)
• Conversion time is 1.6ms maximum at (VDD = 5V ±5%, AGND = DGND = 0V)
• Track/hold acquisition time is 0.6ms maximum at (hardware conversion)
• Power dissipation (normal mode) is 82mW typical at (VDD = 5V)
• Operating temperature range from -40°C to +85°C, 44-lead MQFP package

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