Datasheet AD7902 (Analog Devices) - 4

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Data Sheet AD7902 SPECIFICATIONS
VDD = 2.5 V, VIO = 2.3 V to 5.5 V, VREF = 5 V, TA = −40°C to +125°C, unless otherwise noted.1
Table 2. Parameter Test Conditions/Comments Min Typ Max Unit
RESOLUTION 16 Bits ANALOG INPUT2 Voltage Range INx+ − INx− 0 V V REF Absolute Input Voltage INx+ −0.1 V + 0.1 V REF INx− −0.1 0 +0.1 V Analog Input CMRR f = 450 kHz 67 dB IN Leakage Current at 25°C Acquisition phase 200 nA ACCURACY No Missing Codes 16 Bits Differential Nonlinearity Error3 V = 5 V −1.0 ±0.5 +1.0 LSB REF V = 2.5 V ±0.8 LSB REF Integral Nonlinearity Error3 V = 5 V −2.5 ±1.0 +2.5 LSB REF V = 2.5 V ±0.9 LSB REF Transition Noise3 V = 5 V 0.75 LSB REF V = 2.5 V 1.2 LSB REF Gain Error4 T to T −0.08 ±0.012 +0.08 % FS MIN MAX Gain Error Temperature Drift 0.3 ppm/°C Gain Error Match4 T to T 0.016 0.08 % FS MIN MAX Zero Error4 T to T −1.25 ±0.25 +1.25 mV MIN MAX Zero Temperature Drift 0.19 ppm/°C Zero Error Match4 T to T 0.2 1.0 mV MIN MAX Power Supply Sensitivity3 V = 2.5 V ± 5% ±0.1 LSB DD THROUGHPUT Conversion Rate V ≥ 2.3 V up to 85°C, V ≥ 3.3 V 0 1 MSPS IO IO above 85°C, up to 125°C Transient Response Full-scale step 290 ns AC ACCURACY5 Dynamic Range V = 5 V 92 dB REF V = 2.5 V 87 dB REF Oversampled Dynamic Range f = 10 kSPS 111 dB OUT Signal-to-Noise Ratio (SNR) f = 1 kHz, V = 5 V 89.5 91.5 dB IN REF f = 1 kHz, V = 2.5 V 84.5 86.5 dB IN REF Spurious-Free Dynamic Range (SFDR) f = 1 kHz −105 dB IN Total Harmonic Distortion (THD) f = 1 kHz −105 dB IN Signal-to-Noise-and-Distortion Ratio (SINAD) f = 1 kHz, V = 5 V 89 91 dB IN REF f = 1 kHz, V = 2.5 V 84 86 dB IN REF Channel-to-Channel Isolation f = 10 kHz −112 dB IN 1 The voltages for the VDDx, VIOx, and REFx pins are indicated by VDD, VIO, and VREF, respectively. 2 For information regarding input impedance, see the Analog Inputs section. 3 For the 5 V input range, 1 LSB = 76.3 µV. For the 2.5 V input range, 1 LSB = 38.2 µV. 4 See the Terminology section. These specifications include full temperature range variation, but they do not include the error contribution from the external reference. 5 All specifications in decibels (dB) are referred to a ful -scale input FSR. Although these parameters are referred to ful scale, they are tested with an input signal at 0.5 dB below full scale, unless otherwise specified. Rev. B | Page 3 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE CS MODE /CS Mode, 3-Wire Interface Without Busy Indicator /CS Mode, 3-Wire Interface with Busy Indicator /CS Mode, 4-Wire Interface Without Busy Indicator /CS Mode, 4-Wire Interface with Busy Indicator CHAIN MODE Chain Mode Without Busy Indicator Chain Mode with Busy Indicator APPLICATIONS INFORMATION SIMULTANEOUS SAMPLING FUNCTIONAL SAFTEY CONSIDERATIONS LAYOUT EVALUATING PERFORMANCE OF THE AD7902 OUTLINE DIMENSIONS ORDERING GUIDE NOTES