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參數(shù)資料
| 型號： | AD7492CB |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | ADC |
| 英文描述： | Evaluation Board for 12-bit high speed, low power, successive-approximation ADC |
| 中文描述： | 評估板12位高速，低功耗，逐次逼近型ADC |
| 文件頁數(shù)： | 5/14頁 |
| 文件大?。?/td> | 722K |
| 代理商： | AD7492CB |
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
SK1
Function
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.
Sub-Miniature BNC Socket for external
input.
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.
SK2
SK3
CONNECTORS
There are three connectors on the AD7492 evaluation board
as outlined in Table IV.
Table IV. Connector Functions
Connector
J1
Function
96-Way Connector for EVAL-CONTROL
BRD2 interface connections.
External VDD, VSS & AGND power connec-
tor.
External VDRIVE & DGND power connec-
tor.
J2
J3
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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