AD7876BNZ

AD7876BNZ is a fast, complete, 12bit analogue-to-digital converter (ADC). This converter consists of a track-and-hold amplifier, an 8μs successive approximation ADC, a 3V buried Zener reference and versatile interface logic. The ADCs feature a self-contained internal clock which is laser-trimmed to guarantee accurate control of conversion time. No external clock timing components are required; the on-chip clock may be overridden by an external clock if required. The parts offer a choice of three data output formats: a single, parallel, 12bit word; two 8bit bytes or serial data. Fast bus access times and standard control inputs ensure easy interfacing to modern microprocessors and digital signal processors. It features DC accuracy specifications, such as linearity, full-scale and offset error.

• On-chip reference, laser-trimmed clock, parallel, byte, and serial digital interface
• Signal-to-noise ratio is 70dB typical at (VIN = 10KHz sine wave, fSAMPLE = 100KHz)
• Total harmonic distortion is -80dB typical at (VIN = 10KHz, fSAMPLE = 100KHz)
• Integral nonlinearity is ±1/2LSB typical at (VDD = +5V ±5%, VSS = -5V ±5%)
• Differential Nonlinearity ±1LSB maximum at (VDD = +5V ±5%, VSS = -5V ±5%)
• Power dissipation is 95mW maximum at (VDD = +5V ±5%, VSS = -5V ±5%)
• REF OUT tempco is ±60ppm/°C maximum at (VDD = +5V ±5%, VSS = -5V ±5%)
• Logic input capacitance is 4V min at (ISOURCE = 40μA, VDD = +5V ±5%, VSS = -5V ±5%)
• Analog input current is ±500μA maximum at (VDD = +5V ±5%, VSS = -5V ±5%)
• Operating temperature range from -40°C to +85°C, 24-lead PDIP package

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