9.2.1.2.12.1 Cell ADC Post-Assembly Calibration

Use of post-assembly calibration adjustment can improve device accuracy further after exposure to soldering and/or bake cycles in the manufacturing process. ADC gain and offset-correction factors are programmable for each cell in the BQ79606A-Q1 to allow for post-assembly calibration. The total range of adjustment limitation for the gain factor is -19.4mV to 19.4mV and the offset factor is -24.2mV to 24.2mV. Application of the corrections is to the raw ADC values after application of the factory stored offset and gain corrections. Perform the correction procedures at room temperature (RT) using a stable, high-accuracy DC source and / or voltmeter. The registers contain signed 2's complement values. A zero value in either register indicates no correction. Measurement of two voltage points, VIN1 and VIN2, occurs for each correction. The expected minimum and maximum values for the cell can be used.