REF6145

Product Folder Order Now Technical Documents Tools & Software Support & Community REF6125, REF6130, REF6133, REF6141, REF6145, REF6150 SBOS747B – MAY 2016 – REVISED AUGUST 2016 REF61xx High-Precision Voltage Reference With Integrated ADC Drive Buffer 1 Features 1 Excellent Temperature Drift Performance – 8 ppm/°C (max) from –40°C to +125°C Extremely Low Noise – Total Noise: 5 µVRMS With 47-µF Capacitor – 1/f Noise (0.1 Hz to 10 Hz): 3 µVPP/V Integrated ADC Drive Buffer – Low Output Impedance: < 50 mΩ (0-200 kHz) – First Sample Precise to 18 Bits With ADS8881 – Enables Burst-Mode DAQ Systems Low Supply Current: 820 μA Low Shutdown Current: 1 µA High Initial Accuracy: ±0.05% Very-Low Noise and Distortion – SNR: 100.5 dB, THD: –125 dB (ADS8881) – SNR: 106 dB, THD: –120 dB (ADS127L01) Output Current Drive: ±4 mA Programmable Short-Circuit Current Verified to Drive REF Pin of ADS88xx family of SAR ADCs and ADS127xx family of Wideband ΔΣ ADCs 2 Applications ATE Testers and Oscilloscopes Test and Measurement Equipment Analog Input Modules for PLCs Medical Equipment Precision Data Acquisition Systems 3 Description The REF6000 family of voltage references have an integrated low output impedance buffer that enable the user to directly drive the REF pin of precision data converters, while preserving linearity, distortion, and noise performance. Most precision SAR and Delta-Sigma ADCs, switch binary-weighted capacitors onto the REF pin during the conve...