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AD8420ARMZ Datasheet(PDF) 6 Page - Analog Devices |
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AD8420ARMZ Datasheet(HTML) 6 Page - Analog Devices |
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6 / 27 page  Data Sheet AD8420 Rev. A | Page 5 of 26 +VS = +15 V, −VS = −15 V, VREF = 0 V, TA = 25°C, G = 1 to 1000, RL = 20 kΩ, specifications referred to input, unless otherwise noted. Table 3. Parameter Test Conditions/Comments Min Typ Max Unit COMMON-MODE REJECTION RATIO (CMRR) VCM = −10 V to +10 V CMRR DC to 60 Hz 92 dB CMRR at 1 kHz 92 dB NOISE Voltage Noise Spectral Density f = 1 kHz, VDIFF ≤ 100 mV 55 nV/√Hz Peak to Peak f = 0.1 Hz to 10 Hz, VDIFF ≤ 100 mV 1.5 μV p-p Current Noise Spectral Density f = 1 kHz 80 fA/√Hz Peak to Peak f = 0.1 Hz to 10 Hz 3 pA p-p VOLTAGE OFFSET Offset VS = ±15 V1 250 μV Average Temperature Coefficient TA = −40°C to +85°C 1 μV/°C Offset RTI vs. Supply (PSR) VS = ±15 V 100 dB INPUTS Valid for REF and FB pair, as well as +IN and −IN Input Bias Current2 TA = +25°C 20 27 nA TA = +85°C 24 nA TA = −40°C 30 nA Average Temperature Coefficient TA = −40°C to +85°C 30 pA/°C Input Offset Current TA = +25°C 1 nA TA = +85°C 1 nA TA = −40°C 1 nA Average Temperature Coefficient TA = −40°C to +85°C 0.5 pA/°C Input Impedance Differential 130||3 MΩ||pF Common Mode 1000||3 MΩ||pF Differential Input Operating Voltage TA = −40°C to +85°C −1 1 V Input Operating Voltage (+IN, −IN, REF, or FB) TA = +25°C −VS − 0.15 +VS − 2.2 V TA = +85°C −VS − 0.05 +VS − 1.8 V TA = −40°C −VS − 0.2 +VS − 2.7 V DYNAMIC RESPONSE Small Signal −3 dB Bandwidth G = 1 250 kHz G = 10 25 kHz G = 100 2.5 kHz G =1000 0.25 kHz Settling Time 0.01% G = 1 −1 V to +1 V output step 3 μs G = 10 −5 V to +5 V output step 130 μs G = 100 −5 V to +5 V output step 1 ms Slew Rate 1 V/μs GAIN3 G = 1 + (R2/R1) Gain Range 1 1000 V/V Gain Error G = 1 VOUT = ±1 V 0.02 % G = 10 to 1000 VOUT = ±10 V 0.05 0.1 % Gain vs. Temperature TA = −40°C to +85°C 10 ppm/°C |
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