Overview: Analog Reinvented ES9311Q Dual, Ultra-Low Noise Linear Regulator
Datasheet The ES9311Q Dual, Ultra-Low Noise Linear Regulator is the industry’s highest-performance, ultra-low noise regulator optimized to supply the reference voltages for ESS’ 32-Bit SABRE DACs and ADCs. Audio DACs require a very low-noise reference voltage to achieve high dynamic range (DNR). The ES9311’s output noise is typically under 1µVrms from 100Hz to 100kHz, and less than 1.3µVrms from 10Hz to 100kHz. The temperature coefficient of each voltage output is typically 50ppm/°C. The dual regulator replaces three active devices and several discrete components used previously to produce a high-performance, low-noise regulator. The ES9311Q enables ESS’ Flagship 8-Channel DAC, the ES9038PRO, to achieve its full 140dB DNR and is an ideal low-noise regulator for use with all ESS’ 32-Bit SABRE® DACs.