Analog Devices, Inc. (ADI) has introduced a new generation of high-precision successive approximation (SAR) analog-to-digital converters (ADCs), the AD4003 and AD4000, to combine high performance, low power, small size, and ease of use in a unique manner. In one. These integrated circuit chips not only ensure that mobile test and measurement instruments continue to work longer in the field, but also improve measurement accuracy and repeatability. The two new devices help to develop smaller instruments that can be placed close to the sensor under test or accommodate more data acquisition channels. Instruments with these characteristics can increase the efficiency of field testing and reduce time-related costs associated with characterizing new products.
2 MSPS Sample Rate SAR ADCs The AD4003 (18-bit) and AD4000 (16-bit) are high-performance and easy-to-use, which greatly reduces the system designer's workload and enables optimal data acquisition designs in shorter design cycles. Performance, and without the need for difficult and entangled technical trade-offs. This series of products have high input impedance mode and span compression mode, which can reduce the ADC driver stage design problems and improve the flexibility of the amplifier selection. The high input impedance mode allows the use of low-power precision amplifiers to directly drive the ADC, reducing the power requirements of the signal chain. In addition, built-in overvoltage protection is provided so that no external protection device is required. The span compression allows the ADC driver stage to operate on the same power rail of the ADC, simplifying power management. This combination can increase channel density while reducing system-level power requirements without affecting performance.
The AD400x family includes 20-bit, 18-bit and 16-bit SAR ADCs with 500 KSPS to 2 MSPS rate options.
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