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Found 1 result

  1. maelli01
    Weekend-project: Autoranging microvoltmeter based on the MSP430FR4133 launchpad. ADC used: MIcrochip MCP3422, an 18bit, 3.75 sample/second Sigma Delta with 2 differential inputs. I2C interface This nice little chip contains a programmable amplifier (x2,x4,x8) and a not-too-bad internal reference of 2.048V. Max input range is +/-2.048V, resolution (8x amplified) is 2uV. Hand-etched a single layer PCB which goes on top of Launchpad. Type K cable in hot water: 2.93mV, 73Kelvin temp difference to ambient compare with my Fluke 289, 0.06% (datasheet says 0.05% typical, 0.35
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