Datasheet AD7863 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | Simultaneous Sampling Dual 175 kSPS 14-Bit A/D Converter |
| Seiten / Seite | 25 / 4 — AD7863. SPECIFICATIONS. Table 1. Parameter. A Version. Version. Unit. … |
| Revision | B |
| Dateiformat / Größe | PDF / 458 Kb |
| Dokumentensprache | Englisch |
AD7863. SPECIFICATIONS. Table 1. Parameter. A Version. Version. Unit. Test Conditions/Comments
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AD7863 SPECIFICATIONS
VDD = 5 V ± 5%, AGND = DGND = 0 V, REF = Internal. All specifications TMIN to TMAX, unless otherwise noted.
Table 1. Parameter A Version
1
B Version
1
Unit Test Conditions/Comments
SAMPLE AND HOLD −3 dB Small Signal Bandwidth 7 7 MHz typ Aperture Delay2 35 35 ns max Aperture Jitter2 50 50 ps typ Aperture Delay Matching2 350 350 ps max DYNAMIC PERFORMANCE3 fIN = 80.0 kHz, fS = 175 kSPS Signal-to-(Noise + Distortion) Ratio4 @ 25°C 78 78 dB min TMIN to TMAX 77 77 dB min Total Harmonic Distortion4 −82 −82 dB max −87 dB typ Peak Harmonic or Spurious Noise4 −82 −82 dB max −90 dB typ Intermodulation Distortion4 fa = 49 kHz, fb = 50 kHz Second Order Terms −93 −93 dB typ Third Order Terms −89 −89 dB typ Channel-to-Channel Isolation4 −86 −86 dB typ fIN = 50 kHz sine wave DC ACCURACY Any channel Resolution 14 14 Bits Minimum Resolution for Which No Missing Codes are Guaranteed 14 14 Bits Relative Accuracy4 ±2.5 ±2 LSB max Differential Nonlinearity4 +2 to −1 +2 to −1 LSB max AD7863-10, AD7863-3 Positive Gain Error4 ±10 ±8 LSB max Positive Gain Error Match4 10 10 LSB max Negative Gain Error4 ±10 ±8 LSB max Negative Gain Error Match4 10 10 LSB max Bipolar Zero Error ±10 ±8 LSB max Bipolar Zero Error Match 8 6 LSB max AD7863-2 Positive Gain Error4 ±14 LSB max Positive Gain Error Match4 16 LSB max Unipolar Offset Error ±14 LSB max Unipolar Offset Error Match 10 LSB max ANALOG INPUTS AD7863-10 Input Voltage Range ±10 ±10 V Input Resistance 9 9 kΩ typ AD7863-3 Input Voltage Range ±2.5 ±2.5 V Input Resistance 3 3 kΩ typ AD7863-2 Input Voltage Range 2.5 2.5 V Input Current 100 100 nA max Rev. B | Page 3 of 24 Document Outline FEATURES GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY CONVERTER DETAILS TRACK-AND-HOLD SECTION REFERENCE SECTION CIRCUIT DESCRIPTION ANALOG INPUT SECTION OFFSET AND FULL-SCALE ADJUSTMENT Positive Full-Scale Adjust (−10 Version) Negative Full-Scale Adjust (−10 Version) TIMING AND CONTROL Read Options OPERATING MODES MODE 1 OPERATION Normal Power, High Sampling Performance MODE 2 OPERATION Power-Down, Auto-Sleep After Conversion AD7863 DYNAMIC SPECIFICATIONS SIGNAL-TO-NOISE RATIO (SNR) EFFECTIVE NUMBER OF BITS TOTAL HARMONIC DISTORTION (THD) INTERMODULATION DISTORTION PEAK HARMONIC OR SPURIOUS NOISE DC LINEARITY PLOT POWER CONSIDERATIONS MICROPROCESSOR INTERFACING AD7863 TO ADSP-2100 INTERFACE AD7863 TO ADSP-2101/ADSP-2102 INTERFACE AD7863 TO TMS32010 INTERFACE AD7863 TO TMS320C25 INTERFACE AD7863 TO MC68000 INTERFACE AD7863 TO 80C196 INTERFACE VECTOR MOTOR CONTROL MULTIPLE AD7863S APPLICATIONS HINTS PC BOARD LAYOUT CONSIDERATIONS GROUND PLANES POWER PLANES SUPPLY DECOUPLING OUTLINE DIMENSIONS ORDERING GUIDE
AD7863 SPECIFICATIONS
VDD = 5 V ± 5%, AGND = DGND = 0 V, REF = Internal. All specifications TMIN to TMAX, unless otherwise noted.
Table 1. Parameter A Version
1
B Version
1
Unit Test Conditions/Comments
SAMPLE AND HOLD −3 dB Small Signal Bandwidth 7 7 MHz typ Aperture Delay2 35 35 ns max Aperture Jitter2 50 50 ps typ Aperture Delay Matching2 350 350 ps max DYNAMIC PERFORMANCE3 fIN = 80.0 kHz, fS = 175 kSPS Signal-to-(Noise + Distortion) Ratio4 @ 25°C 78 78 dB min TMIN to TMAX 77 77 dB min Total Harmonic Distortion4 −82 −82 dB max −87 dB typ Peak Harmonic or Spurious Noise4 −82 −82 dB max −90 dB typ Intermodulation Distortion4 fa = 49 kHz, fb = 50 kHz Second Order Terms −93 −93 dB typ Third Order Terms −89 −89 dB typ Channel-to-Channel Isolation4 −86 −86 dB typ fIN = 50 kHz sine wave DC ACCURACY Any channel Resolution 14 14 Bits Minimum Resolution for Which No Missing Codes are Guaranteed 14 14 Bits Relative Accuracy4 ±2.5 ±2 LSB max Differential Nonlinearity4 +2 to −1 +2 to −1 LSB max AD7863-10, AD7863-3 Positive Gain Error4 ±10 ±8 LSB max Positive Gain Error Match4 10 10 LSB max Negative Gain Error4 ±10 ±8 LSB max Negative Gain Error Match4 10 10 LSB max Bipolar Zero Error ±10 ±8 LSB max Bipolar Zero Error Match 8 6 LSB max AD7863-2 Positive Gain Error4 ±14 LSB max Positive Gain Error Match4 16 LSB max Unipolar Offset Error ±14 LSB max Unipolar Offset Error Match 10 LSB max ANALOG INPUTS AD7863-10 Input Voltage Range ±10 ±10 V Input Resistance 9 9 kΩ typ AD7863-3 Input Voltage Range ±2.5 ±2.5 V Input Resistance 3 3 kΩ typ AD7863-2 Input Voltage Range 2.5 2.5 V Input Current 100 100 nA max Rev. B | Page 3 of 24 Document Outline FEATURES GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY CONVERTER DETAILS TRACK-AND-HOLD SECTION REFERENCE SECTION CIRCUIT DESCRIPTION ANALOG INPUT SECTION OFFSET AND FULL-SCALE ADJUSTMENT Positive Full-Scale Adjust (−10 Version) Negative Full-Scale Adjust (−10 Version) TIMING AND CONTROL Read Options OPERATING MODES MODE 1 OPERATION Normal Power, High Sampling Performance MODE 2 OPERATION Power-Down, Auto-Sleep After Conversion AD7863 DYNAMIC SPECIFICATIONS SIGNAL-TO-NOISE RATIO (SNR) EFFECTIVE NUMBER OF BITS TOTAL HARMONIC DISTORTION (THD) INTERMODULATION DISTORTION PEAK HARMONIC OR SPURIOUS NOISE DC LINEARITY PLOT POWER CONSIDERATIONS MICROPROCESSOR INTERFACING AD7863 TO ADSP-2100 INTERFACE AD7863 TO ADSP-2101/ADSP-2102 INTERFACE AD7863 TO TMS32010 INTERFACE AD7863 TO TMS320C25 INTERFACE AD7863 TO MC68000 INTERFACE AD7863 TO 80C196 INTERFACE VECTOR MOTOR CONTROL MULTIPLE AD7863S APPLICATIONS HINTS PC BOARD LAYOUT CONSIDERATIONS GROUND PLANES POWER PLANES SUPPLY DECOUPLING OUTLINE DIMENSIONS ORDERING GUIDE