Characterizing the MAX6341 Voltage Reference
The quality of the voltage reference is key to a precision multimeter so it was worth spending some time to run some simple tests on the MAX6341 to verify that it will be fit for the task of building a precision multimeter. MAX6341 Key Features · Ultra-Low, 1ppm/°C Max Tempco · Very Low, 1.5µVp-p Noise (0.1Hz to 10Hz) (MAX6325) · ±0.02% Initial Accuracy (MAX6350) · ±15mA Output Source and Sink Current · Low, 18mW Power Consumption (MAX6325) · Industry-Standard Pinout · Optional Noise Reduction and Voltage Trim · Excellent Transient Response · 8-Pin SO Package Available · Low, 30ppm/1000h Long-Term Stability · Stable for All Capacitive Loads Pictured below is the schematic that was followed for this test. There is no reason to stray from this design in the final product as the