AD7656A

Data Sheet 250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-Bit ADC AD7656A FEATURES 6 independent analog-to-digital converters (ADCs) True bipolar analog inputs Pin-/software-selectable ranges: ±10 V or ±5 V Fast throughput rate: 250 kSPS iCMOS® process technology Low power: 140 mW at 250 kSPS with 5 V supplies Wide input bandwidth 86.5 dB SNR at 50 kHz input frequency On-chip reference and reference buffers Parallel, serial, and daisy-chain interface modes High speed serial interface Serial peripheral interface (SPI)/QSPI™/MICROWIRE®/DSP compatible Power-down mode: 100 mW maximum 64-lead LQFP Improved power supply sequencing (PSS) robustness APPLICATIONS Power line monitoring systems Instrumentation and control systems Multi-axis positioning systems FUNCTIONAL BLOCK DIAGRAM VDD CONVST A CONVST B CONVST C AVCC DVCC REF V1 T/H BUF CLK OSC CONTROL LOGIC 16-BIT SAR OUTPUT DRIVERS V2 T/H V3 T/H BUF 16-BIT SAR 16-BIT SAR V4 T/H V5 T/H BUF 16-BIT SAR 16-BIT SAR ...