Datasheet AD628 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | High Common-Mode Voltage, Programmable Gain Difference Amplifier |
| Pages / Page | 20 / 5 — AD628. Table 2. AD628AR. AD628ARM. Parameter. Conditions. Min Typ Max Min … |
| Revision | G |
| File Format / Size | PDF / 361 Kb |
| Document Language | English |
AD628. Table 2. AD628AR. AD628ARM. Parameter. Conditions. Min Typ Max Min Typ Max Unit
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AD628
TA = 25°C, VS = 5 V, RL = 2 kΩ, REXT1 = 10 kΩ, REXT2 = ∞, VREF = 2.5 V, unless otherwise noted.
Table 2. AD628AR AD628ARM Parameter Conditions Min Typ Max Min Typ Max Unit
DIFFERENTIAL AND OUTPUT AMPLIFIER Gain Equation G = +0.1(1+ REXT1/REXT2) V/V Gain Range See Figure 29 0.11 100 0.11 100 V/V Offset Voltage VCM = 2.25 V; RTI of input pins2; −3.0 +3.0 −3.0 +3.0 mV output amplifier G = +1 vs. Temperature 6 15 6 15 μV/°C CMRR3 RTI of input pins; G = +0.1 to +100 75 75 dB 500 Hz 75 75 dB Minimum CMRR Over Temperature −40°C to +85°C 70 70 dB vs. Temperature 1 4 1 4 (μV/V)/°C PSRR (RTI) VS = 4.5 V to 10 V 77 94 77 94 dB Input Voltage Range Common Mode4 −12 +17 −12 +17 V Differential −15 +15 −15 +15 V Dynamic Response Small Signal Bandwidth – 3 dB G = +0.1 440 440 kHz Full Power Bandwidth 30 30 kHz Settling Time G = +0.1; to 0.01%, 30 V step 15 15 μs Slew Rate 0.3 0.3 V/μs Noise (RTI) Spectral Density 1 kHz 350 350 nV/√Hz 0.1 Hz to 10 Hz 15 15 μV p-p DIFFERENTIAL AMPLIFIER Gain 0.1 0.1 V/V Error –0.1 +0.01 +0.1 –0.1 +0.01 +0.1 % Nonlinearity 3 3 ppm vs. Temperature 3 10 3 10 ppm Offset Voltage RTI of input pins −2.5 +2.5 −2.5 +2.5 mV vs. Temperature 10 10 μV/°C Input Impedance Differential 220 220 kΩ Common Mode 55 55 kΩ CMRR5 RTI of input pins; G = +0.1 to +100 75 75 dB 500 Hz 75 75 dB Minimum CMRR Over Temperature −40°C to +85°C 70 70 dB vs. Temperature 1 4 1 4 (μV/V)/°C Output Resistance 10 10 kΩ Error −0.1 +0.1 −0.1 +0.1 % OUTPUT AMPLIFIER Gain Equation G = (1 + REXT1/REXT2) V/V Nonlinearity G = +1, VOUT = 1 V to 4 V 0.5 0.5 ppm Output Offset Voltage RTI of output amplifier −0.15 +0.15 −0.15 +0.15 mV vs. Temperature 0.6 0.6 μV/°C Output Voltage Swing RL = 10 kΩ 0.9 4.1 0.9 4.1 V RL = 2 kΩ 1 4 1 4 V Bias Current 1.5 3 1.5 3 nA Offset Current 0.2 0.5 0.2 0.5 nA CMRR VCM = 1 V to 4 V 130 130 dB Open-Loop Gain VOUT = 1 V to 4 V 130 130 dB Rev. G | Page 5 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
AD628
TA = 25°C, VS = 5 V, RL = 2 kΩ, REXT1 = 10 kΩ, REXT2 = ∞, VREF = 2.5 V, unless otherwise noted.
Table 2. AD628AR AD628ARM Parameter Conditions Min Typ Max Min Typ Max Unit
DIFFERENTIAL AND OUTPUT AMPLIFIER Gain Equation G = +0.1(1+ REXT1/REXT2) V/V Gain Range See Figure 29 0.11 100 0.11 100 V/V Offset Voltage VCM = 2.25 V; RTI of input pins2; −3.0 +3.0 −3.0 +3.0 mV output amplifier G = +1 vs. Temperature 6 15 6 15 μV/°C CMRR3 RTI of input pins; G = +0.1 to +100 75 75 dB 500 Hz 75 75 dB Minimum CMRR Over Temperature −40°C to +85°C 70 70 dB vs. Temperature 1 4 1 4 (μV/V)/°C PSRR (RTI) VS = 4.5 V to 10 V 77 94 77 94 dB Input Voltage Range Common Mode4 −12 +17 −12 +17 V Differential −15 +15 −15 +15 V Dynamic Response Small Signal Bandwidth – 3 dB G = +0.1 440 440 kHz Full Power Bandwidth 30 30 kHz Settling Time G = +0.1; to 0.01%, 30 V step 15 15 μs Slew Rate 0.3 0.3 V/μs Noise (RTI) Spectral Density 1 kHz 350 350 nV/√Hz 0.1 Hz to 10 Hz 15 15 μV p-p DIFFERENTIAL AMPLIFIER Gain 0.1 0.1 V/V Error –0.1 +0.01 +0.1 –0.1 +0.01 +0.1 % Nonlinearity 3 3 ppm vs. Temperature 3 10 3 10 ppm Offset Voltage RTI of input pins −2.5 +2.5 −2.5 +2.5 mV vs. Temperature 10 10 μV/°C Input Impedance Differential 220 220 kΩ Common Mode 55 55 kΩ CMRR5 RTI of input pins; G = +0.1 to +100 75 75 dB 500 Hz 75 75 dB Minimum CMRR Over Temperature −40°C to +85°C 70 70 dB vs. Temperature 1 4 1 4 (μV/V)/°C Output Resistance 10 10 kΩ Error −0.1 +0.1 −0.1 +0.1 % OUTPUT AMPLIFIER Gain Equation G = (1 + REXT1/REXT2) V/V Nonlinearity G = +1, VOUT = 1 V to 4 V 0.5 0.5 ppm Output Offset Voltage RTI of output amplifier −0.15 +0.15 −0.15 +0.15 mV vs. Temperature 0.6 0.6 μV/°C Output Voltage Swing RL = 10 kΩ 0.9 4.1 0.9 4.1 V RL = 2 kΩ 1 4 1 4 V Bias Current 1.5 3 1.5 3 nA Offset Current 0.2 0.5 0.2 0.5 nA CMRR VCM = 1 V to 4 V 130 130 dB Open-Loop Gain VOUT = 1 V to 4 V 130 130 dB Rev. G | Page 5 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
