ZHCUB80C August 2004 – July 2023 PGA309
对于 +5V 电源和图 3-5 所示的配置(Test 引脚为高电平),在加电时通过 PGA309 进行的增益和失调电压调节变为:
VOUT = VDIFF (Front-End PGA Gain)(Output Amplifier Gain)(Fine Gain) + 0.25VREF(Fine Gain)(Output Amplifier Gain)
VOUT = VDIFF (4)(2)(0.5) + (0.25(5)(0.5)) × 2
VOUT = 4 VDIFF + 1.25V