ADC122S625

ADC122S625 www.ti.com SNAS451A – FEBRUARY 2008 – REVISED MARCH 2013 ADC122S625 Dual 12-Bit, 50 kSPS to 200 kSPS, Simultaneous Sampling A/D Converter Check for Samples: ADC122S625 FEATURES 1 23 True Simultaneous Sampling Differential Inputs Specified Performance from 50 kSPS to 200 kSPS External Reference Wide Input Common-Mode Voltage Range Single High-Speed Serial Data Output Operating Temperature Range of −40°C to +105°C SPI™/ QSPI™/MICROWIRE/DSP Compatible Serial Interface APPLICATIONS Motor Control Power Meters/Monitors Multi-Axis Positioning Systems Instrumentation and Control Systems Data Acquisition Systems Medical Instruments Direct Sensor Interface KEY SPECIFICATIONS Conversion Rate: 50 kSPS to 200 kSPS INL: ±1 LSB (max) DNL: ±0.95 LSB (max) SNR: 71 dBc (min) THD: -72 dBc (min) ENOB: 11.25 bits (min) Power Consumption at 200 kSPS – Converting, VA = 5V, VREF = 2.5V: 8.6 mW (typ) – Power-Down, VA = 5V, VREF = 2.5V: 2.6 µW (typ) DESCRIPTION The ADC122S625 is a dual 12-bit, 50 kSPS to 200 kSPS simultaneous sampling Analog-to-Digital (A/D) converter. The analog inputs on both channels are sampled simultaneously to preserve their relative phase information to each other. The converter is based on a successive-approximation register architecture where the differential nature of the analog inputs is maintained from the internal trackand-hold circuits throughout the A/D converter to provide excellent common-mode signal rejection. ...