AD8225SPECIFICATIONS (TA = 25C, VS =5 V, RL = 2 k,unless otherwise noted.) ParameterConditionsMinTypMaxUnit GAIN Gain 5 V/V Gain Error –0.1 +0.05 +0.1 % Nonlinearity 2 10 ±ppm vs. Temperature 1 5 ±ppm/°C VOLTAGE OFFSET (RTI) Offset Voltage 125 325 ±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 Operating Voltage Range –VS + 1.6 +VS – 1.0 V vs. Temperature –VS + 2.1 +VS – 1.5 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 –VS + 0.9 +VS – 1.0 V vs. Temperature –VS + 1.0 +VS – 1.2 V Operating Voltage Range RL = 10 kΩ –VS + 0.8 +VS – 1.0 V vs. Temperature –VS + 0.9 +VS – 1.0 V Short Circuit Current 18 mA DYNAMIC RESPONSE Small Signal –3 dB Bandwidth 900 kHz Full Power Bandwidth VOUT = 7.8 V p-p 170 kHz Settling Time (0.01%) 7 V Step 3 µs Settling Time (0.001%) 7 V Step 4.3 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 VINT, VREF = 0 60 µA Voltage Range –VS + 0.9 +VS – 1.0 V Gain to Output 0.999 1 1.001 POWER SUPPLY Operating Range 1.7 18 ±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. REV. A –3– 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
