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AD7492CB Scheda tecnica(PDF) 5 Page - Analog Devices |
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AD7492CB Scheda tecnica(HTML) 5 Page - Analog Devices |
5 / 14 page EVAL-AD7492CB REV. A –5– SOCKETS There are three input sockets relevant to the operation of the AD7492 on this evaluation board. The function of these sockets is outlined in Table III. Table III. Socket Functions Socket Function SK1 Sub-Miniature BNC Socket for unipolar ana- log input. Analog inputs in the acceptable AD7492 analog input range (0 V to REFIN) are applied to this socket. The signal is then buffered before it is applied to the AD7492 VIN pin. SK2 Sub-Miniature BNC Socket for external CONVST input. SK3 Sub-Miniature BNC Socket for Bipolar ana- log input The AD7492 can only accept analog inputs in the range 0 V to REFIN. Bipolar analog inputs in the range -1.25 V to +1.25 V applied to this socket are biased up to the acceptable AD7492 input range by the on- board bias-up circuit before being applied to the AD7492 VIN pin. CONNECTORS There are three connectors on the AD7492 evaluation board as outlined in Table IV. Table IV. Connector Functions Connector Function J 1 96-Way Connector for EVAL-CONTROL BRD2 interface connections. J 2 External VDD, VSS & AGND power connec- tor. J 3 External VDRIVE & DGND power connec- tor. OPERATING WITH THE EVAL-CONTROL BRD2 The evaluation board can be operated in a stand-alone mode or operated in conjunction with the EVAL-CONTROL BRD2. This EVAL-CONTROL BRD2 is available from Analog Devices under the order entry "EVAL-CONTROL BRD2". When interfacing directly to this control board, all supplies and control signals to operate the AD7492 are provided by the EVAL-CONTROL BRD2 when it is run under control of the AD7492 software which is provided with the AD7492 evaluation board package. This EVAL-CON- TROL BRD2 will also operate with all Analog Devices evaluation boards which end with the letters CB in their title. The 96-way connector on the EVAL-AD7492CB plugs directly into the 96-way connector on the EVAL-CON- TROL BRD2. No power supplies are required in the system. The EVAL-CONTROL BRD2 generates all the required supplies for itself and the EVAL-AD7492CB. The EVAL- CONTROL BRD2 is powered from a 12 V AC transformer. Suitable transformers are available as an accessory from Analog Devices under the following part numbers: EVAL-110VAC-US: For use in the U.S. or Japan EVAL-220VAC-UK: For use in the U.K. EVAL-220VAC-EU: For use in Europe These transformers are also available for other suppliers including Digikey (U.S.) and Campbell Collins (U.K.). Connection between the EVAL-CONTROL BRD2 and the serial port of a PC is via a standard RS-232 cable which is provided as part the EVAL-CONTROL BRD2 package. Please refer to the manual which accompanies the EVAL- CONTROL BRD2 for more details on the EVAL-CON- TROL BRD2 package. |
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