Datasheet AD7988-1, AD7988-5 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | 16-Bit, 500ksps, Ultra Lower Power 16 bit SAR ADC |
| Seiten / Seite | 23 / 3 — Data Sheet. AD7988-1/AD7988-5. SPECIFICATIONS. Table 2. Parameter. Test … |
| Revision | G |
| Dateiformat / Größe | PDF / 591 Kb |
| Dokumentensprache | Englisch |
Data Sheet. AD7988-1/AD7988-5. SPECIFICATIONS. Table 2. Parameter. Test Conditions/Comments. Min. Typ. Max. Unit
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Data Sheet AD7988-1/AD7988-5 SPECIFICATIONS
VDD = 2.5 V, VIO = 1.71 V to 5.5 V, VREF = 5 V, TA = –40°C to +125°C, unless otherwise noted.
Table 2. Parameter Test Conditions/Comments Min Typ Max Unit
RESOLUTION 16 Bits ANALOG INPUT Voltage Range IN+ − IN− 0 VREF V Absolute Input Voltage IN+ −0.1 VREF + 0.1 V IN− −0.1 +0.1 V Analog Input CMRR fIN = 1 kHz 60 dB Leakage Current at 25°C Acquisition phase 1 nA Input Impedance See the Analog Inputs section ACCURACY No Missing Codes 16 Bits Differential Linearity Error VREF = 5 V −0.9 ±0.4 +0.9 LSB1 VREF = 2.5 V ±0.55 LSB1 Integral Linearity Error VREF = 5 V −1.25 ±0.6 +1.25 LSB1 VREF = 2.5 V ±0.65 LSB1 Transition Noise VREF = 5 V 0.6 LSB1 VREF = 2.5 V 1.0 LSB1 Gain Error, T 2 MIN to TMAX ±2 LSB1 Gain Error Temperature Drift ±0.35 ppm/°C Zero Error, T 2 MIN to TMAX −0.5 ±0.08 +0.5 mV Zero Temperature Drift 0.54 ppm/°C Power Supply Sensitivity VDD = 2.5 V ± 5% ±0.1 LSB1 THROUGHPUT AD7988-1 Conversion Rate 0 100 kSPS Transient Response Full-scale step 500 ns AD7988-5 Conversion Rate 0 500 kSPS Transient Response Full-scale step 400 ns AC ACCURACY Dynamic Range VREF = 5 V 92 dB3 VREF = 2.5 V 87 dB3 Oversampled Dynamic Range fO = 10 kSPS 111 dB3 Signal-to-Noise Ratio, SNR fIN = 10 kHz, VREF = 5 V 90 91.5 dB3 fIN = 10 kHz, VREF = 2.5 V 87 dB3 Spurious-Free Dynamic Range, SFDR fIN = 10 kHz −110 dB3 Total Harmonic Distortion, THD fIN = 10 kHz −114 dB3 Signal-to-(Noise + Distortion), SINAD fIN = 10 kHz, VREF = 5 V 91 dB3 fIN = 10 kHz, VREF = 2.5 V 86.5 dB3 1 LSB means least significant bit. With the 5 V input range, 1 LSB is 76.3 µV. 2 See the Terminology section. These specifications include full temperature range variation, but not the error contribution from the external reference. 3 All specifications in dB are referred to a full-scale input FSR. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified. Rev. F | Page 3 of 23 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE MODE, 3-WIRE MODE 4-WIRE CHAIN MODE APPLICATIONS INFORMATION INTERFACING TO BLACKFIN® DSP LAYOUT EVALUATING THE PERFORMANCE OF THE AD7988-1/AD7988-5 OUTLINE DIMENSIONS ORDERING GUIDE
Data Sheet AD7988-1/AD7988-5 SPECIFICATIONS
VDD = 2.5 V, VIO = 1.71 V to 5.5 V, VREF = 5 V, TA = –40°C to +125°C, unless otherwise noted.
Table 2. Parameter Test Conditions/Comments Min Typ Max Unit
RESOLUTION 16 Bits ANALOG INPUT Voltage Range IN+ − IN− 0 VREF V Absolute Input Voltage IN+ −0.1 VREF + 0.1 V IN− −0.1 +0.1 V Analog Input CMRR fIN = 1 kHz 60 dB Leakage Current at 25°C Acquisition phase 1 nA Input Impedance See the Analog Inputs section ACCURACY No Missing Codes 16 Bits Differential Linearity Error VREF = 5 V −0.9 ±0.4 +0.9 LSB1 VREF = 2.5 V ±0.55 LSB1 Integral Linearity Error VREF = 5 V −1.25 ±0.6 +1.25 LSB1 VREF = 2.5 V ±0.65 LSB1 Transition Noise VREF = 5 V 0.6 LSB1 VREF = 2.5 V 1.0 LSB1 Gain Error, T 2 MIN to TMAX ±2 LSB1 Gain Error Temperature Drift ±0.35 ppm/°C Zero Error, T 2 MIN to TMAX −0.5 ±0.08 +0.5 mV Zero Temperature Drift 0.54 ppm/°C Power Supply Sensitivity VDD = 2.5 V ± 5% ±0.1 LSB1 THROUGHPUT AD7988-1 Conversion Rate 0 100 kSPS Transient Response Full-scale step 500 ns AD7988-5 Conversion Rate 0 500 kSPS Transient Response Full-scale step 400 ns AC ACCURACY Dynamic Range VREF = 5 V 92 dB3 VREF = 2.5 V 87 dB3 Oversampled Dynamic Range fO = 10 kSPS 111 dB3 Signal-to-Noise Ratio, SNR fIN = 10 kHz, VREF = 5 V 90 91.5 dB3 fIN = 10 kHz, VREF = 2.5 V 87 dB3 Spurious-Free Dynamic Range, SFDR fIN = 10 kHz −110 dB3 Total Harmonic Distortion, THD fIN = 10 kHz −114 dB3 Signal-to-(Noise + Distortion), SINAD fIN = 10 kHz, VREF = 5 V 91 dB3 fIN = 10 kHz, VREF = 2.5 V 86.5 dB3 1 LSB means least significant bit. With the 5 V input range, 1 LSB is 76.3 µV. 2 See the Terminology section. These specifications include full temperature range variation, but not the error contribution from the external reference. 3 All specifications in dB are referred to a full-scale input FSR. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified. Rev. F | Page 3 of 23 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE MODE, 3-WIRE MODE 4-WIRE CHAIN MODE APPLICATIONS INFORMATION INTERFACING TO BLACKFIN® DSP LAYOUT EVALUATING THE PERFORMANCE OF THE AD7988-1/AD7988-5 OUTLINE DIMENSIONS ORDERING GUIDE