link to page 4 link to page 4 link to page 4 link to page 4 link to page 4 link to page 4 link to page 4 Enhanced ProductAD7291-EPSPECIFICATIONS VDD = 2.8 V to 3.6 V; VDRIVE = 1.65 V to 3.6 V; fSCL = 400 kHz, fast SCLK mode; VREF = 2.5 V internal/external; TA = −55°C to +125°C, unless otherwise noted. Table 1. ParameterMinTypMaxUnit1Test Conditions/Comments DYNAMIC PERFORMANCE fIN = 1 kHz sine wave Signal-to-Noise Ratio (SNR) 70 71 dB Signal-to-Noise + Distortion Ratio (SINAD) 70 71 dB Total Harmonic Distortion (THD) −84 −78 dB Spurious-Free Dynamic Range (SFDR) −85 −80 dB Intermodulation Distortion (IMD) fA = 5.4 kHz, fB = 4.6 kHz Second-Order Terms −88 dB Third-Order Terms −88 dB Channel-to-Channel Isolation −100 dB fIN = 10 kHz Full Power Bandwidth2 30 MHz At 3 dB 10 MHz At 0.1 dB DC ACCURACY Resolution 12 Bits Integral Nonlinearity (INL) ±0.5 ±1 LSB Differential Nonlinearity (DNL) ±0.5 ±0.99 LSB Guaranteed no missing codes to 12 bits Offset Error ±2 ±4.5 LSB Offset Error Matching ±2.5 ±4.5 LSB Offset Temperature Drift 4 ppm/°C Gain Error ±1 ±4 LSB Gain Error Matching ±1 ±2.5 LSB Gain Temperature Drift 0.5 ppm/°C ANALOG INPUT Input Voltage Ranges 0 VREF V DC Leakage Current ±0.01 ±1 µA Input Capacitance2 34 pF When in track 8 pF When in hold REFERENCE INPUT/OUTPUT Reference Output Voltage3 2.4925 2.5 2.5075 V ±0.3% maximum at 25°C Long-Term Stability 150 ppm For 1000 hours Output Voltage Hysteresis 50 ppm Reference Input Voltage Range4 1 2.5 V DC Leakage Current ±0.01 ±1 µA External reference applied to Pin VREF VREF Output Impedance 1 Ω Reference Temperature Coefficient 12 35 ppm/°C VREF Noise2 60 µV rms Bandwidth = 10 MHz LOGIC INPUTS (SDA, SCL) Input High Voltage, VINH 0.7 × VDRIVE V Input Low Voltage, VINL 0.3 × VDRIVE V Input Current, IIN ±0.01 ±1 µA VIN = 0 V or VDRIVE Input Capacitance, C 2 IN 6 pF Input Hysteresis, VHYST 0.1 × VDRIVE V Rev. 0 | Page 3 of 8 Document Outline FEATURES ENHANCED PRODUCT FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE
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