AD7891APZ-2

AD7891APZ-2 is a 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 to 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, instrumentation.

• 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%)
• Input range from 0V to +5V, 0V to +2.5V, ±2.5V, 500kSPS sample rate
• ±1LSB relative accuracy, differential nonlinearity is ±1LSB maximum at (VDD = 5V, ±5%)
• Track/hold acquisition time is 0.4ms maximum at (VDD = 5V, ±5%)
• Total harmonic distortion is -78dB maximum at (VDD = 5V, ±5%)
• Input current is ±50nA maximum at (VDD = 5V, ±5%)
• REF OUT temperature coefficient is 25ppm/°C typical at (VDD = 5V, ±5%)
• Operating temperature range from -40°C to +85°C, 44-lead PLCC package

บันทึก

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