AD7643BSTZ

AD7643BSTZ is a 18bit, charge redistribution SAR, fully differential, PulSAR® analogue-to-digital converter (ADC) that operates from a single 2.5V power supply. The part contains a high speed, 18-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. The part has no latency and can be used in asynchronous rate applications. The AD7643 is hardware factory calibrated and tested to ensure ac parameters, such as signal-to-noise ratio (SNR), in addition to the more traditional dc parameters of gain, offset, and linearity. It is used in applications such as medical instruments, high speed data acquisition/high dynamic data acquisition, digital signal processing, spectrum analysis, instrumentation, communications, ATE.

• Throughput rate is 1.25MSPS maximum at (AVDD = DVDD = 2.5V; OVDD = 2.3V to 3.6V)
• Integral linearity error is ±1.5LSB typical at (AVDD = DVDD = 2.5V; OVDD = 2.3V to 3.6V)
• Dynamic range is 95dB typical at (AVDD = DVDD = 2.5V; OVDD = 2.3V to 3.6V)
• Total harmonic distortion is -114dB typical at (fIN = 1KHz, VREF = 2.5V)
• Output voltage is 2.048V typical at (AVDD = DVDD = 2.5V; OVDD = 2.3V to 3.6V)
• Differential input range: ±VREF (VREF upto 2.5V), no pipeline delay (SAR architecture)
• SPI®/QSPI™/MICROWIRE™/DSP compatible, single 2.5V supply operation
• Transition noise is 1.7LSB typical at (AVDD = DVDD = 2.5V; OVDD = 2.3V to 3.6V)
• Complete cycle is 800ns maximum at (AVDD = DVDD = 2.5V; OVDD = 2.3V to 3.6V)
• Operating temperature range from -40°C to +85°C, 48-lead LQFP package

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ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party