link to page 16 AD628AD628ARAD628ARMParameterConditionsMinTypMaxMinTypMaxUnit OUTPUT AMPLIFIER Gain Equation G = (1 + REXT1/REXT2) V/V Nonlinearity G = +1, VOUT = ±10 V 0.5 0.5 ppm Offset Voltage RTI of output amp −0.15 +0.15 −0.15 +0.15 mV vs. Temperature 0.6 0.6 μV/°C Output Voltage Swing RL = 10 kΩ −14.2 +14.1 −14.2 +14.1 V RL = 2 kΩ −13.8 +13.6 −13.8 +13.6 V Bias Current 1.5 3 1.5 3 nA Offset Current 0.2 0.5 0.2 0.5 nA CMRR VCM = ±13 V 130 130 dB Open-Loop Gain VOUT = ±13 V 130 130 dB POWER SUPPLY Operating Range ±2.25 ±18 ±2.25 ±18 V Quiescent Current 1.6 1.6 mA TEMPERATURE RANGE −40 +85 −40 +85 °C 1 To use a lower gain, see the Gain Adjustmen sect t ion. 2 The addition of the difference amplifier and output amplifier offset voltage does not exceed this specification. ⎡ ⎤ ⎢(0.1)(V ) ⎥ 3 Error due to common mode as seen at the output: CM V = ×[Output Amplifier ] Gain OUT ⎢ . 75 ⎥ ⎢ ⎥ ⎣ 10 20 ⎦ ⎡ ⎤ ⎢(0.1)(V ) CM ⎥ 4 Error due to common mode as seen at the output of A1: V A1 = OUT ⎢ . 75 ⎥ ⎢ ⎥ ⎣ 20 10 ⎦ Rev. G | Page 4 of 20 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS THEORY OF OPERATION APPLICATIONS INFORMATION GAIN ADJUSTMENT INPUT VOLTAGE RANGE VOLTAGE LEVEL CONVERSION CURRENT LOOP RECEIVER MONITORING BATTERY VOLTAGES FILTER CAPACITOR VALUES KELVIN CONNECTION OUTLINE DIMENSIONS ORDERING GUIDE
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