AD7357BRUZ Analog Devices Inc, AD7357BRUZ Datasheet
AD7357BRUZ
Specifications of AD7357BRUZ
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AD7357BRUZ Summary of contents
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FEATURES Dual 14-bit SAR ADC Simultaneous sampling Throughput rate: 4.2 MSPS per channel Specified for 2 Power dissipation 4.2 MSPS On-chip reference: 2.048 V ± 0.25%, 6 ppm/°C Dual conversion with read ...
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AD7357 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 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 ...
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SPECIFICATIONS V = 2.5 ± 3.6 V, internal reference = 2.048 DRIVE otherwise noted. Table 2. Parameter Min DYNAMIC PERFORMANCE Signal-to-Noise Ratio (SNR) 74.5 2 Signal-to-Noise and Distortion (SINAD) 74 ...
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AD7357 Parameter Min REFERENCE INPUT/OUTPUT V Input Voltage Range 2.048 + 0.1 REF V Input Current REF V Output Voltage 2.038 REF 2.043 V Temperature Coefficient REF V Long Term Stability REF V Thermal Hysteresis REF V Noise REF V ...
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TIMING SPECIFICATIONS V = 2.5 V ± 3.6 V, internal reference = 2.048 DRIVE Table 3. Parameter Limit MIN MAX f 500 SCLK ...
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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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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 , REF Reference ...
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AD7357 TYPICAL PERFORMANCE CHARACTERISTICS 0 –20 –40 –60 –80 –100 –120 –140 0 250 500 750 1000 1250 1500 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 ...
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CURRENT LOAD (µA) Figure 9. V vs. Reference Output Current Drive REF 2.0 1.5 INL MAX 1.0 0.5 DNL MAX 0 DNL MIN ...
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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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Intermodulation Distortion (IMD) 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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For ac applications recommended to remove high frequency components from the analog input signal by the use low-pass filter on the analog input pins. In applications where harmonic distortion and signal-to-noise ratio are critical, the ...
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AD7357 Differential Amplifier An ideal method of applying differential drive to the AD7357 is to use a differential amplifier such as the AD8138. This part can be used as a single-ended-to-differential amplifier differential-to-differential amplifier. The AD8138 also ...
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MODES OF OPERATION The AD7357 mode of operation 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, and full power-down mode. After a ...
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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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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 coming out ...
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AD7357 SERIAL INTERFACE Figure 30 shows the detailed timing diagram for serial inter- facing to the AD7357. The serial clock provides the conversion clock and controls the transfer of information from the AD7357 during conversion. There is a single sample ...
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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 houses the AD7357 ...
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... ORDERING GUIDE Model Temperature Range AD7357BRUZ −40°C to +85°C AD7357BRUZ-500RL7 −40°C to +85°C AD7357BRUZ-RL −40°C to +85°C AD7357YRUZ −40°C to +125°C AD7357YRUZ-500RL7 −40°C to +125°C AD7357YRUZ-RL −40°C to +125°C AD7357WYRUZ −40°C to +125°C AD7357WYRUZ-RL − ...