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Volume 9, Issue 2 | YOUR SEMICONDUCTOR SOLUTIONS RESOURCE |
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C o n t e n t s 16-Bit ADCs Deliver Ease of Use >> Benefits of Continuous Time Σ-Δ ADCs >> 24-Bit Σ-Δ ADC for Faster Precision Measurement >> High Speed ADCs Use 50% Less PCB Surface >> Receivers Optimize Image Quality and Power >> Pin-Programmable, Low Power Σ-Δ ADC Is Easy to Implement >> ADC Simulation, Software, and Behavioral Tools >> New Family of PulSAR ADCs Delivers High Resolution >> Dual Channel, SAR ADCs with Highest Performance at Lowest Power >> Top Considerations for Avoiding Differential ADC Driver Accidents >> ADC Drivers Designed to Get Peak Performance Out of Your ADC >> VGAs for Driving High Speed ADCs >> Fully Differential IF Amplifiers >> Current Feedback Differential ADC Drivers for High Gain >> 16-Bit ADC Driver Simplifies Signal Conditioning >> ADC Driver Supports Converter Performance >> All prices in this bulletin are in USD in quantities greater than 1000 (unless otherwise noted), recommended lowest grade resale, FOB U.S.A.
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New Low Power PulSAR ADCs Delivers High Resolution to Portable Designs
Housed inside a 4 mm × 4 mm, 20-lead LFCSP package, the AD7986 is an 18-bit successive approximation ADC achieving 2 MSPS of conversion speed, ideal for high end data acquisition systems. Power dissipation is only 15 mW, and the input range is fully differential. The AD7986 operates from a single, 2.5 V supply with a separate logic pin for 1.8 V, 2.5 V, 3 V, and 5 V digital logic. The AD7986 achieves ±1.5 LSB INL typical with a maximum specification of ±2 LSBs. Differential nonlinearity guarantees 18-bit resolution with no missing codes and is specified at +2 LSB/–1 LSB. Dynamic range is 99 dB, SFDR is 119 dB, and THD is –116 dB; all typical specifications. Performance is specified from –40°C to +85°C. For higher sampling rates, the 16-bit, 2.5 MSPS AD7985 is available. Both devices utilize a 4-wire SPI bus that allows extra features like daisy-chaining and setting the sampling rate using the TURBO option (high for full throughput or low for lower power dissipation). These PulSAR ADCs were designed for batterypowered equipment, medical instruments, and seismic data acquisition but can be used in any application where speed, accuracy, and low power are required.
Features
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