Datasheet AD8225 (Analog Devices) - 4

AD8225 SPECIFICATIONS (TA = 25 C, VS = 5 V, RL = 2 k , unless otherwise noted.) Parameter Conditions Min Typ Max Unit
GAIN Gain 5 V/V Gain Error –0.1 +0.05 +0.1 % Nonlinearity 2 10 ±ppm vs. Temperature 1 5 ±ppm/°C OFFSET VOLTAGE (RTI) Offset Voltage 150 375 ±µV vs. Temperature 2 ±µV/°C vs. Supply 90 100 dB INPUT Input Operating Impedance Differential 10储2 GΩ储pF Common Mode 10储2 GΩ储pF Input Voltage Range 1.6 VS – 1.05 V (Common-Mode) vs. Temperature 1.7 VS – 1.0 V Input Bias Current 0.5 1.2 nA vs. Temperature 3 pA/°C Input Offset Current 0.15 0.5 nA vs. Temperature 1.5 pA/°C Common-Mode Rejection Ratio 86 94 dB TA = TMIN to TMAX 83 dB f = 10 kHz* 80 dB OUTPUT Operating Voltage Range RL = 2 kΩ 0.8 VS – 1.05 V vs. Temperature 0.9 VS – 1.2 V Operating Voltage Range RL = 10 kΩ 0.8 VS – 1.0 V vs. Temperature 0.9 VS – 1.0 V Short Circuit Current 18 mA DYNAMIC RESPONSE Small Signal –3 dB Bandwidth 900 kHz Full Power Bandwidth VOUT = 3.2 V p-p 420 kHz Settling Time (0.01%) 2 V Step 3.3 µs Settling Time (0.001%) 2 V Step 5.1 µs Slew Rate 5 V/µs NOISE (RTI) Voltage 0.1 Hz to 10 Hz 1.5 µV p-p Spectral Density, 1 kHz 45 nV/√Hz Current 0.1 Hz to 10 Hz 4 pA p-p Spectral Density, 1 kHz 50 fA/√Hz REFERENCE INPUT RIN 18 kΩ IIN 60 µA Voltage Range 0.4 VS – 0.9 V Gain to Output 0.999 1 1.001 POWER SUPPLY Operating Range 3.4 36 V Quiescent Current 1.05 1.2 mA TEMPERATURE RANGE For Specified Performance –40 +85 °C *Pin 1 connected to Pin 4. See Applications section. Specifications subject to change without notice. –4– REV. A Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS PIN FUNCTION DESCRIPTIONS ORDERING GUIDE Typical Performance Characteristics Test Circuits THEORY OF OPERATION 47pF 2 5 200mV APPLICATIONS Precision V-to-I Converter Driving a High Resolution ADC Using the Reference Input AD8225 Used as an EKG Front End Benefits of Fast Slew Rates Evaluation Board OUTLINE DIMENSIONS Revision History