ADAQ4003

Data Sheet 18-Bit, 2 MSPS, µModule Data Acquisition Solution ADAQ4003 FEATURES Improved design journey Fully differential ADC driver with selectable input range Input ranges with 5 V VREF: ±10 V, ±5 V, or ±2.5 V Essential passive components included ±0.005% iPassives matched resistor array Wide input common-mode voltage range High common-mode rejection ratio Single-ended to differential conversion Increased signal chain density Small, 7 mm × 7 mm, 0.80 mm pitch, 49-ball CSP_BGA 4× footprint reduction vs. discrete solution On-board reference buffer with VCM generation High performance Throughput: 2 MSPS, no pipeline delay Guaranteed 18-bit no missing codes INL: ±3 ppm typical, ±8 ppm guaranteed SINAD: 99 dB typical (G = 0.454) Offset error drift: 0.7 ppm/°C typical (G = 0.454) Gain error drift: ±0.5 ppm/°C typical Low total power dissipation: 51.6 mW typical at 2 MSPS Serial interface SPI-/QSPI™-/MICROWIRE™-/DSP-compatible Versatile logic interface supply with 1.8 V, 2.5 V, 3 V, or 5 V APPLICATIONS Automatic test equipment Machine automation Process controls Medical instrumentation Digital control loops FUNCTIONAL BLOCK DIAGRAM VS+ REF REF_OUT VDD PD_REF 0.1µF OUT+ R1K– R1K1– IN– IN+ R1K1+ R1K+ 1kΩ 1kΩ 1.1kΩ VCMO 1.1kΩ 1kΩ 1kΩ OUT– FDA VCMO 10kΩ 10kΩ 33Ω 1nF 33Ω 1nF 10µF ADC 2.2µF 0.1µF 0.1µF ADAQ4003 VIO SDI SCK SDO CNV 21657-001 VCMO PD_AMP VS– MODE GND Figure 1. ADCIN+ ADCIN– GENERAL DESCRIPTION The ADAQ4003 is a µModule® precision data acquisiti...