LOAD CELL AMPLIFIER

INSTRUMENTATION AMPLIFIER INA 122 LOW OFFSET VOLTAGE: 250µV max SUPPLY RANGE  –Single Supply: 2.2V to 36V, Dual Supply: –0.9/+1.3V to ±18V  FIGURE 1- PINOUT   FIGURE 2- GAIN EQUATION & GAIN TABLE  FIGURE 3- BASIC CIRCUIT SAMPLE APPLICATION  -INA122 AS LOAD CELL CZL601 AMPLIFIER FIGURE 5 – LOAD CELL AMPLIFIER USING SINGLE SUPPLY GAIN RESISTOR DESIGN Since input signal is in the range of uV range we need maximum gain.there is problem of non linearity at higher gain . I recommends two amplifiers for this purpose .The gain is selected above 40000. ie i have set the pot nearer to minimum position .ie near to 5 ohms.   LOAD CELL CZL601 EQUIVALENT CIRCUIT OF LOAD CELL