AD7682BCPZ

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The AD7682BCPZ is a low power, 14-bit, 0.5MSPS (Mega Samples Per Second) Analog-to-Digital Converter (ADC) with a patented split supply rail architecture. The split supply provides the convenience of operation from a single 2.6 V supply and the accuracy of operation from 0 V to +2.3 V over a wide range of temperatures. The AD7682BCPZ utilizes pipeline architecture with a rail-to-rail, 2-stage sample and hold amplifier. This combination provides high speed, great accuracy and low power (170 mW).

The AD7682BCPZ has wide dynamic range, high sampling rate and very low power consumption, making it well suited for data acquisition and sensor interface applications. This device is designed to convert analog input signals into a 14-bit digital output and operate from a single power supply of 2.6V over the industrial temperature range while providing excellent static and dynamic performance.

One key feature of the AD7682BCPZ is its patented split supply rail architecture. This architecture divides the device into two halves and provides separate core power, I/Os and clocking power. Each half has its own separate supply voltage and each half can be independently powered down, to minimize power consumption when not in use. This allows the device to remain powered on while simultaneously sharing the same analog and digital I/O and the same clocking resources.

The AD7682BCPZ is designed to deliver accurate and reliable performance over a wide temperature range (-40 C to +85 C). The high sampling rate allows it to capture rapidly changing noise and signal variations without requiring additional clock distributions or external processors. The on-chip track-and-hold circuit eliminates the need for external tracking ADCs, resulting in reduced component count and improved system performance.

The AD7682BCPZ features two differential analog inputs and uses a multiplexer architecture to support single-ended and differential input modes. A safety register feature allows the user to code data from a wide range of various source configurations. The AD7682BCPZ can accommodate both unipolar and bipolar signal ranges on its inputs, and also supports power-on reset, power-down, and conversion start/hold functions. The on-chip op amp, track-and-hold amplifier, multiplexer and sample-and-hold amplifier provide filtering, signal amplification and gain control, minimizing system component count and cost. The overall low power consumption makes it suitable for battery-powered applications.

In summary, the AD7682BCPZ has been designed to meet the demands of challenging data acquisition and sensor interface applications. Its low power operation, high speed, wide dynamic range and robust design make it ideal for sensor and signal conditioning applications, including medical, automotive and industrial instrumentation. This device is specifically suited for applications requiring low power, high accuracy and fast sampling rates.

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