Datasheet AD7298-1 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 8-Channel, 1 MSPS, 10-Bit SAR ADC |
| Pages / Page | 25 / 4 — AD7298-1. SPECIFICATIONS. Table 1. Parameter Min. Typ. Max. Unit. Test. … |
| Revision | A |
| File Format / Size | PDF / 776 Kb |
| Document Language | English |
AD7298-1. SPECIFICATIONS. Table 1. Parameter Min. Typ. Max. Unit. Test. Conditions/Comments
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AD7298-1 SPECIFICATIONS
VDD = 2.8 V to 3.6 V, VDRIVE = 1.65 V to 3.6 V, fSAMPLE = 1 MSPS, fSCLK = 20 MHz, VREF = 2.5 V internal, TA = −40°C to +125°C, unless otherwise noted.
Table 1. Parameter Min Typ Max Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 50 kHz sine wave Signal-to-Noise Ratio (SNR)1 61 61.5 dB Signal-to-Noise-(and-Distortion) Ratio (SINAD)2 61 61.5 dB Total Harmonic Distortion (THD)2 −82 −75 dB Spurious-Free Dynamic Range (SFDR) −83 −76 dB Intermodulation Distortion (IMD) fA = 40.1 kHz, fB = 41.5 kHz Second-Order Terms −86 dB Third-Order Terms −86 dB Channel-to-Channel Isolation −90 dB fIN = 50 kHz, fNOISE = 60 kHz SAMPLE AND HOLD Aperture Delay3 12 ns Aperture Jitter3 40 ps Full Power Bandwidth 30 MHz At 3 dB 10 MHz At 0.1 dB DC ACCURACY Resolution 10 Bits Integral Nonlinearity (INL)2 ±0.25 ±0.5 LSB Differential Nonlinearity (DNL)2 ±0.3 ±0.5 LSB Guaranteed no missed codes to 10 bits Offset Error2 ±0.5 ±1.125 LSB Offset Error Matching2 ±0.625 ±1.125 LSB Offset Temperature Drift 4 ppm/°C Gain Error2 ±0.25 ±1 LSB Gain Error Matching2 ±0.16 ±0.625 LSB Gain Temperature Drift 0.5 ppm/°C ANALOG INPUT Input Voltage Ranges 0 VREF V DC Leakage Current ±0.01 ±1 μA Input Capacitance 32 pF When in track mode 8 pF When in hold mode REFERENCE INPUT/OUTPUT Reference Output Voltage4 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 Range 1 2.5 V DC Leakage Current ±0.01 ±1 μA External reference applied to the VREF pin VREF Output Impedance 1 Ω VREF Temperature Coefficient 12 35 ppm/°C VREF Noise 60 μV rms Bandwidth = 10 MHz LOGIC INPUTS 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 3 IN 3 pF Rev. A | Page 3 of 24 Document Outline Features Functional Block Diagram General Description Product Highlights Revision History Specifications Timing Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Description Typical Performance Characteristics Terminology Circuit Information Converter Operation Analog Input ADC Transfer Function VDRIVE The Internal or External Reference Control Register Modes of Operation Traditional Multichannel Mode of Operation Repeat Operation Power-Down Modes Normal Mode Partial Power-Down Mode Full Power-Down Mode Powering Up the AD7298-1 Reset Serial Interface Layout and Configuration Outline Dimensions Ordering Guide
AD7298-1 SPECIFICATIONS
VDD = 2.8 V to 3.6 V, VDRIVE = 1.65 V to 3.6 V, fSAMPLE = 1 MSPS, fSCLK = 20 MHz, VREF = 2.5 V internal, TA = −40°C to +125°C, unless otherwise noted.
Table 1. Parameter Min Typ Max Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 50 kHz sine wave Signal-to-Noise Ratio (SNR)1 61 61.5 dB Signal-to-Noise-(and-Distortion) Ratio (SINAD)2 61 61.5 dB Total Harmonic Distortion (THD)2 −82 −75 dB Spurious-Free Dynamic Range (SFDR) −83 −76 dB Intermodulation Distortion (IMD) fA = 40.1 kHz, fB = 41.5 kHz Second-Order Terms −86 dB Third-Order Terms −86 dB Channel-to-Channel Isolation −90 dB fIN = 50 kHz, fNOISE = 60 kHz SAMPLE AND HOLD Aperture Delay3 12 ns Aperture Jitter3 40 ps Full Power Bandwidth 30 MHz At 3 dB 10 MHz At 0.1 dB DC ACCURACY Resolution 10 Bits Integral Nonlinearity (INL)2 ±0.25 ±0.5 LSB Differential Nonlinearity (DNL)2 ±0.3 ±0.5 LSB Guaranteed no missed codes to 10 bits Offset Error2 ±0.5 ±1.125 LSB Offset Error Matching2 ±0.625 ±1.125 LSB Offset Temperature Drift 4 ppm/°C Gain Error2 ±0.25 ±1 LSB Gain Error Matching2 ±0.16 ±0.625 LSB Gain Temperature Drift 0.5 ppm/°C ANALOG INPUT Input Voltage Ranges 0 VREF V DC Leakage Current ±0.01 ±1 μA Input Capacitance 32 pF When in track mode 8 pF When in hold mode REFERENCE INPUT/OUTPUT Reference Output Voltage4 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 Range 1 2.5 V DC Leakage Current ±0.01 ±1 μA External reference applied to the VREF pin VREF Output Impedance 1 Ω VREF Temperature Coefficient 12 35 ppm/°C VREF Noise 60 μV rms Bandwidth = 10 MHz LOGIC INPUTS 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 3 IN 3 pF Rev. A | Page 3 of 24 Document Outline Features Functional Block Diagram General Description Product Highlights Revision History Specifications Timing Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Description Typical Performance Characteristics Terminology Circuit Information Converter Operation Analog Input ADC Transfer Function VDRIVE The Internal or External Reference Control Register Modes of Operation Traditional Multichannel Mode of Operation Repeat Operation Power-Down Modes Normal Mode Partial Power-Down Mode Full Power-Down Mode Powering Up the AD7298-1 Reset Serial Interface Layout and Configuration Outline Dimensions Ordering Guide
