REF6125 - Texas Instruments

REF6125 High-Precision Voltage Reference

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 conversion process. In or.

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-Circui.