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Kitchen Scale

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Kitchen Scale

Introduction of the scheme

Electronic kitchen scale is becoming more popular in the kitchen. Unlike previous spring scale, the graduation and accuracy of electronic kitchen scale have been greatly improved with the coordination from pressure sensor and peripheral control circuit. Performance of the peripheral control circuit has to be enhanced too because of these improvements. One also has to consider the cost factor.

SD8000S can be used in 20,000:1 maximum dynamic range scales. SD8006 can be used in 30,000:1 maximum dynamic range scales. They both have timing and temperature measurement functions. SD8000S has 4X14 LCD drivers. SD8006 LCD drivers can be 4X28 or 8X24. The kitchen scale designs using SD8000S or SD8006 do not need any external EEPROM. They use 3V button or regular battery as power source. Periphery circuit of the LCD display solution comprises only six or seven capacitors and one backlight current-limiting resistor. Capacity and increment are chosen during calibration. Capacity options are 7kg, 5kg, 3kg, 2kg, and 1kg. Increment options are 1g, 0.5g, 0.2g, and 0.1g.

Application Characteristic

Application block diagram

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