EVAL-AD7490SDZ Analog Devices, EVAL-AD7490SDZ Datasheet
EVAL-AD7490SDZ
Specifications of EVAL-AD7490SDZ
Related parts for EVAL-AD7490SDZ
EVAL-AD7490SDZ Summary of contents
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... Rev. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. ...
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AD7490 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 ...
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Data Sheet SPECIFICATIONS 2 5.25 V, REF = 2 DRIVE IN −40°C to +85°C. Table 1. Parameter DYNAMIC PERFORMANCE Signal-to-(Noise + Distortion) (SINAD) 2 Signal-to-Noise Ratio (SNR) 2 Total Harmonic Distortion ...
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AD7490 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 ...
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Data Sheet TIMING SPECIFICATIONS ≤ REF DD DRIVE DD Table 2. Timing Specifications 1 Limit MIN MAX Parameter ...
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AD7490 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter V to GND GND DRIVE Analog Input Voltage to GND Digital Input Voltage to GND Digital Output Voltage to GND REF to GND ...
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Data Sheet PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS AD7490 TOP VIEW V 6 ...
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AD7490 TYPICAL PERFORMANCE CHARACTERISTICS Figure 5 shows a typical FFT plot for the AD7490 at 1 MSPS sample rate and 50 kHz input frequency. Figure 7 shows the power supply rejection ratio vs. supply ripple frequency for the AD7490. The ...
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Data Sheet – 1MSPS 25°C A – 5.25V DD RANGE = 0V TO REF IN –60 –65 – –75 = 5Ω –80 = 10Ω –85 10 100 ...
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AD7490 TERMINOLOGY Integral Nonlinearity This is the maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The end- points of the transfer function are zero scale, a point 1 LSB below the first code ...
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Data Sheet Peak Harmonic or Spurious Noise Peak harmonic or spurious noise is defined as the ratio of the rms value of the next largest component in the ADC output spectrum ( and excluding dc) to the ...
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AD7490 INTERNAL REGISTER STRUCTURE CONTROL REGISTER The control register on the AD7490 is a 12-bit, write-only register. Data is loaded from the DIN pin of the AD7490 on the falling edge of SCLK. The data is transferred on the DIN ...
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Data Sheet Table 7. Channel Selection ADD3 ADD2 ...
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AD7490 SHADOW REGISTER The Shadow register on the AD7490 is a 16-bit, write-only register. Data is loaded from the DIN pin of the AD7490 on the falling edge of SCLK. The data is transferred on the DIN line at the ...
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Data Sheet Figure 14 shows how a sequence of consecutive channels can be converted on without having to program the Shadow register or write to the part on each serial transfer. Again, to exit this mode of operation and revert ...
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AD7490 THEORY OF OPERATION CIRCUIT INFORMATION The AD7490 is a fast, 16-channel, 12-bit, single-supply, analog- to-digital converter. The parts can be operated from a 2 5.25 V supply. When operated from supply and provided with ...
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Data Sheet When no amplifier is used to drive the analog input, the source impedance should be limited to low values. The maximum source impedance depends on the amount of total harmonic distortion (THD) that can be tolerated. The THD ...
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AD7490 TYPICAL CONNECTION DIAGRAM Figure 21 shows a typical connection diagram for the AD7490. In this setup, the AGND pin is connected to the analog ground plane of the system. In Figure 21, REF IN decoupled 2.5 V supply from ...
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Data Sheet Reference Section An external reference source should be used to supply the 2.5 V reference to the AD7490. Errors in the reference source result in gain errors in the AD7490 transfer function and add to the specified full-scale ...
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AD7490 Auto Shutdown (PM1 = 0, PM0 = 1) In this mode, the AD7490 automatically enters shutdown at the end of each conversion when the control register is updated. When the part is in shutdown, the track-and-hold is in hold ...
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Data Sheet Powering Up the AD7490 When supplies are first applied to the AD7490, the ADC may power up in any of the operating modes of the part. To ensure that the part is placed into the required operating mode, ...
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AD7490 SERIAL INTERFACE Figure 27 shows the detailed timing diagram for serial interfacing to the AD7490. The serial clock provides the conversion clock and also controls the transfer of information to and from the AD7490 during each conversion. The CS ...
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Data Sheet If the WEAK/ TRI bit in the control register is set to 1, instead of returning to true three-state on the 16 th DOUT line is pulled weakly to the logic level corresponding to ADD3 of the next ...
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AD7490 MICROPROCESSOR INTERFACING The serial interface on the AD7490 allows the part to be directly connected to a range of many different microprocessors. This section explains how to interface the AD7490 with some of the more common microcontroller and DSP ...
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... EVAL-CONTROL BRD2. The EVAL-CONTROL BRD2 can be used in conjunction with the AD7490 evaluation board, as well as many other Analog Devices, Inc., evaluation boards ending in the CB designator, to demonstrate and evaluate the ac and dc performance of the AD7490. The software allows the user to perform ac (fast Fourier transform) and dc (histogram of codes) tests on the AD7490 ...
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AD7490 OUTLINE DIMENSIONS PIN 1 INDICATOR 0.80 0.75 0.70 SEATING PLANE 9.80 9.70 9. 4.50 4.40 4.30 6.40 BSC PIN 1 0.65 BSC 1.20 MAX 0.15 0.05 0.30 0.20 0.19 SEATING COPLANARITY 0.09 ...
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... AD7490BRUZ −40°C to +85°C AD7490BRUZ-REEL −40°C to +85°C AD7490BRUZ-REEL7 −40°C to +85°C EVAL-AD7490SDZ EVAL-SDP-CB1Z Z = RoHS Compliant Part The EVAL-AD7490CBZ can be used as a standalone evaluation board or in conjunction with the evaluation controller board for evaluation/demonstration purposes. 3 The EVAL-CONTROL BRD2 is a complete unit allowing control and communicate with all Analog Devices evaluation boards ending designator ...
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... AD7490 NOTES ©2002–2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02691-0-12/12(D) Rev Page Data Sheet ...