The analog input is truly differential with an absolute/ common mode range for the CHO+/CHO- or CHl+/CHl- input pins extending from GND - 0.3V to Vcc + 0.3V. Outside these limits, the ESD protection devices begin to turn on and the errors due to input leakage current increase rapidly. Within these limits, the LTC2436-1 con- ve rts the bipolar diffe rential in p ut signal, VIN = IN+ - IN-, from -FS = -0.5 , VREF to +FS = 0.5 'VREF where VREF = REF+- REF-, with the selected channel referred as IN+and IN-. Outside this range, the converter indicates the overrange or the underrange condition using distinct output codes.
| Input offset voltage RG = 50 C2 | o | -10 | | 10 | -15 | 15 | mV |
| Input offset current Input current | Il0 | -5 | 5 | 5 15 | -10 | 10 25 | nA nA |
| Open-Ioop voltage gain f-l kHz | Gvo | 75 | | | 70 | | dB |
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