AD7819YRZ-REEL7

AD7819YRZ-REEL7 is an 8bit sampling ADC. It is a high speed, microprocessor-compatible, 8bit analogue-to-digital converter with a maximum throughput of 200kSPS. The converter operates off a single 2.7V to 5.5V supply and contains a 4.5µs successive approximation A/D converter, track/hold circuitry, on-chip clock oscillator and 8-bit wide parallel interface. The parallel interface is designed to allow easy interfacing to microprocessors and DSPs. Using only address decoding logic the AD7819 is easily mapped into the microprocessor address space. When used in its power-down mode, this device automatically powers down at the end of a conversion and powers up at the start of a new conversion. This feature significantly reduces the power consumption of the part at lower throughput rates. It can also operate in a high speed mode where the part is not powered down between conversions. In this mode of operation the part is capable of providing 200kSPS throughput.

• Supply voltage range from 2.7V to 5.5V
• 8-bit parallel interface, 8-bit read, specifications at 2.7V to 3.6V and 5V 10%
• Analog input range from 0V to VREF, reference input range from 1.2V to VDD
• Signal to (noise + distortion) ratio is 48dB minimum at (-40°C to +125°C)
• Total harmonic distortion is -70dB typical at (-40°C to +125°C)
• Relative accuracy is ±0.5LSB maximum at (-40°C to +125°C)
• Differential nonlinearity is ±0.5LSB maximum at (-40°C to +125°C)
• Input leakage current is ±1µA maximum at (-40°C to +125°C)
• Automatic power-down is 57.75μW typical at (1kSPS, VDD = 3V)
• 16-lead small outline package, 150°C junction temperature

附註

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