AD7986BCPZ-RL7 Datasheet PDF - ADI

●GENERAL DESCRIPTION

●The AD7986 is an 18-bit, 2 MSPS successive approximation, analog-to-digital converter (ADC). It contains a low power, high speed, 18-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and a versatile serial interface port. On the rising edge of CNV, the AD7986 samples the voltage difference between the IN+ and IN− pins. The voltages on these pins usually swing in opposite phases between 0 V and VREF. It features a very high sampling rate turbo mode (TURBO = high) and a reduced power normal mode (TURBO = low) for low power applications where the power is scaled with the throughput.

●FEATURES

●18-bit resolution with no missing codes

●Throughput: 2 MSPS (TURBO = high), 1.5 MSPS (TURBO = low)

●Low power dissipation

●  15 mW at 2 MSPS, with external reference

●  26 mW at 2 MSPS with internal reference

●INL: ±1 LSB typical, ±2.5 LSB maximum

●SNR

●  95.5 dB, with on-chip reference

●  97.0 dB, with external reference

●4.096 V internal reference: typical drift of 10 ppm/°C

●True differential analog input voltage range: ±VREF

●  0 V to VREFwith VREFup to 5.0 V

●  Allows use of any input range

●No pipeline delay

●Logic interface: 1.8 V/2.5 V/2.7 V

●Serial interface: SPI/QSPI™/MICROWIRE™/DSP compatible

●Ability to daisy-chain multiple ADCs with busy indicator

●20-lead 4 mm × 4 mm LFCSP (QFN)

●APPLICATIONS

●Battery-powered equipment

●Data acquisition systems

●Medical instruments

●Seismic data acquisition systems