EVAL-AD7400AEDZ Analog Devices Inc, EVAL-AD7400AEDZ Datasheet
EVAL-AD7400AEDZ
Specifications of EVAL-AD7400AEDZ
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EVAL-AD7400AEDZ Summary of contents
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FEATURES 10 MHz clock rate Second-order modulator 16 bits, no missing codes ±2 LSB INL typical at 16 bits 1.5 μV/°C typical offset drift On-board digital isolator On-board reference ±250 mV analog input range Low power operation: 15.5 mA typical ...
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... Changes to Ordering Guide .......................................................... 18 5/08—Revision 0: Initial Version Terminology .................................................................................... 12 Theory of Operation ...................................................................... 13 Circuit Information .................................................................... 13 Analog Input ............................................................................... 13 Differential Inputs ...................................................................... 14 Current Sensing Applications ................................................... 14 Voltage Sensing Applications .................................................... 14 Digital Filter ................................................................................ 15 Applications Information .............................................................. 17 Grounding and Layout .............................................................. 17 Evaluating the AD7400A Performance ................................... 17 Insulation Lifetime ..................................................................... 17 Outline Dimensions ....................................................................... 18 Ordering Guide .......................................................................... 18 Rev Page ...
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SPECIFICATIONS DD1 DD2 T = −40°C to +125°C, except where specified unless otherwise noted. Table 1. Parameter STATIC PERFORMANCE Resolution Integral Nonlinearity 2 ...
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AD7400A TIMING SPECIFICATIONS DD1 DD2 Table 2. Parameter Limit MIN MAX MCLKOUT 9/ ...
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INSULATION AND SAFETY-RELATED SPECIFICATIONS Table 3. Parameter Input-to-Output Momentary Withstand Voltage Minimum External Air Gap (Clearance) Minimum External Tracking (Creepage) Minimum Internal Gap (Internal Clearance) Tracking Resistance (Comparative Tracking Index) Isolation Group REGULATORY INFORMATION Table CSA Recognized ...
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AD7400A DIN V VDE V 0884-10 (VDE V 0884-10) INSULATION CHARACTERISTICS This isolator is suitable for reinforced electrical isolation only within the safety limit data. Maintenance of the safety data is ensured by means of protective circuits. Table 5. Parameter ...
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ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. All voltages are relative to A their respective ground. Table 6. Parameter V to GND DD1 GND DD2 2 Analog Input Voltage to GND 1 Output Voltage to ...
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AD7400A PIN CONFIGURATION AND FUNCTION DESCRIPTIONS DD1 AD7400A V + MCLKOUT TOP VIEW V – MDAT (Not to Scale) GND 4 GND 5 1 Figure 5. 8-Lead PDIP Pin Configuration ...
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TYPICAL PERFORMANCE CHARACTERISTICS T = 25°C, using 20 kHz brickwall filter, unless otherwise noted. A 110 100 DD1 DD2 NO DECOUPLING CAPACITOR 200mV SINE ...
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AD7400A 500 450 400 350 300 250 200 150 100 DD1 DD2 T = 25° –60 –40 – TEMPERATURE (°C) Figure 13. Offset Drift vs. Temperature 0.20 0.15 0.10 ...
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4.5V DD1 DD2 10.2 10.0 9 5.25V 9.6 DD1 DD2 9 DD1 DD2 9.2 9.0 TEMPERATURE (°C) Figure 19. MCLKOUT vs. Temperature for ...
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AD7400A TERMINOLOGY Differential Nonlinearity Differential nonlinearity is the difference between the measured and the ideal 1 LSB change between any two adjacent codes in the ADC. Integral Nonlinearity Integral nonlinearity is the maximum deviation from a straight line passing through ...
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THEORY OF OPERATION CIRCUIT INFORMATION The AD7400A isolated Σ -Δ modulator converts an analog input signal into a high speed (10 MHz typical), single-bit data stream; the time average of the single-bit data from the modulator is directly proportional to ...
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AD7400A DIFFERENTIAL INPUTS The analog input to the modulator is a switched capacitor design. The analog signal is converted into charge by highly linear sampling capacitors. A simplified equivalent circuit diagram of the analog input is shown in Figure 23. ...
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DIGITAL FILTER The overall system resolution and throughput rate is deter- mined by the filter selected and the decimation rate used. The higher the decimation rate, the greater the system accuracy, as illustrated in Figure 25. However, there is a ...
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AD7400A /*DIFFERENTIATOR (including decimation stage) Perform the differentiation stage (FIR lower speed. DIFF1 + + ACC3 – – – –1 – WORD_CLK Figure 27. Differentiator Z = one sample delay WORD_CLK = output word rate */ ...
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... The software allows the user to perform ac (fast Fourier transform) and dc (histogram of codes) tests on the AD7400A. The software and documentation are that ships with the evaluation board. INSULATION LIFETIME All insulation structures subjected to sufficient time and/or voltage are vulnerable to breakdown ...
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... COPLANARITY 0.10 ORDERING GUIDE Model 1 Temperature Range AD7400AYNSZ −40°C to +125°C AD7400AYRWZ −40°C to +125°C AD7400AYRWZ-RL −40°C to +125°C EVAL-AD7400AEDZ EVAL-CED1Z RoHS Compliant Part. 0.379 (9.63) 0.375 (9.53) 0.371 (9.43) 0.388 (9.86) 5 0.380 (9.65) 0.372 (9.45) 4 0.300 (7.62) REF 0 ...
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NOTES Rev Page AD7400A ...
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AD7400A NOTES ©2008–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07077-0-1/11(B) Rev Page ...