AD7357_08 AD [Analog Devices], AD7357_08 Datasheet
AD7357_08
Related parts for AD7357_08
AD7357_08 Summary of contents
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Preliminary Technical Data FEATURES Dual 14-bit SAR ADC Simultaneous sampling Throughput rate: 4.2 MSPS per channel Specified for Power dissipation 4.2 MSPS On-chip reference: 2.048 V ± 0.25%, 6 ppm/°C Dual conversion ...
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AD7357 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications .................................................................. 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and ...
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Preliminary Technical Data SPECIFICATIONS V = 2.5 ± 3.6 V, internal reference = 2.048 DRIVE otherwise noted. Table 2. Parameter DYNAMIC PERFORMANCE Signal-to-Noise Ratio (SNR) Signal-to-Noise and Distortion (SINAD) Total ...
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AD7357 Parameter LOGIC INPUTS Input High Voltage, V INH Input Low Voltage, V INL Input Current Input Capacitance LOGIC OUTPUTS Output High Voltage Output Low Voltage Floating-State Leakage Current Floating-State Output Capacitance ...
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Preliminary Technical Data TIMING SPECIFICATIONS V = 2.5 V ± 3.6 V, internal reference = 2.048 DRIVE Table 3. Parameter Limit MIN MAX f 50 SCLK 80 ...
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AD7357 ABSOLUTE MAXIMUM RATINGS Table 4. Parameter V to AGND, DGND, REFGND AGND, DGND, REFGND DRIVE DRIVE AGND to DGND to REFGND 1 Analog Input Voltages to AGND 2 Digital Input Voltages to ...
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Preliminary Technical Data PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description Analog Inputs of ADC A. These analog inputs form a fully differential pair. INA- INA REF ...
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AD7357 TYPICAL PERFORMANCE CHARACTERISTICS 0 –20 –40 –60 –80 –100 –120 –140 0 250 500 750 1000 1250 FREQUENCY (kHz) Figure 3. Typical FFT 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 4000 8000 CODE Figure ...
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Preliminary Technical Data Figure 9. V vs. Reference Output Current Drive REF Figure 10. Linearity Error vs. SCLK Frequency Figure 11. Linearity Error vs. External V REF Rev. PrF | Page AD7357 Figure 12 Access Time vs. ...
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AD7357 TERMINOLOGY Integral Nonlinearity (INL) INL is the maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The endpoints of the transfer function are zero scale (1 LSB below the first code transition) and ...
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Preliminary Technical Data Intermodulation Distortion With inputs consisting of sine waves at two frequencies, fa and fb, any active device with nonlinearities creates distortion products at sum and difference frequencies of mfa ± nfb where ...
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AD7357 THEORY OF OPERATION CIRCUIT INFORMATION The AD7357 is a high speed, dual, 14-bit, single-supply, successive approximation analog-to-digital converter. The part operates from a 2.5 V power supply and features throughput rates up to 4.2 MSPS. The AD7357 contains two ...
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Preliminary Technical Data harmonic distortion and signal-to-noise ratio are critical, the analog input should be driven from a low impedance source. Large source impedances significantly affect the ac performance of the ADC and may necessitate the use of an input ...
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AD7357 If the analog inputs source being used has zero impedance, all four resistors ( and R 2) should be the same. If the source has a 50 Ω impedance and ...
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Preliminary Technical Data MODES OF OPERATION The mode of operation of the AD7357 is selected by controlling the logic state of the CS signal during a conversion. There are three possible modes of operation: normal mode, partial power- down mode, ...
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AD7357 FULL POWER-DOWN MODE This mode is intended for use in applications where throughput rates slower than those in the partial power-down mode are required, as power-up from a full power-down takes substantially longer than that from a partial power-down. ...
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Preliminary Technical Data POWER-UP TIMES The AD7357 has two power-down modes: partial power-down and full power-down. There are described in detail in the Partial Power-Down Mode and Full Power-Down Mode sections. This section deals with the power-up time required when ...
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AD7357 SERIAL INTERFACE Figure 30 shows the detailed timing diagram for serial interfacing to the AD7357. The serial clock provides the conversion clock and controls the transfer of information from the AD7357 during conversion. The CS signal initiates the data ...
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Preliminary Technical Data APPLICATION HINTS GROUNDING AND LAYOUT The analog and digital supplies to the AD7357 are independent and separately pinned out to minimize coupling between the analog and digital sections of the device. The printed circuit board (PCB) that ...
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AD7357 OUTLINE DIMENSIONS 4.50 4.40 4.30 PIN 1 0.15 0.05 ORDERING GUIDE Model Temperature Range 1 AD7357BRUZ −40°C to +85°C 1 AD7357BRUZ-500RL7 −40°C to +85°C 1 AD7357BRUZ-RL −40°C to +85°C 1 AD7357YRUZ −40°C to +125°C 1 AD7357YRUZ-500RL7 −40°C to +125°C ...