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| 型号： | AD7492 |
| 厂商： | Analog Devices, Inc. |
| 元件分类： | ADC |
| 英文描述： | Evaluation Board for 12-bit high speed, low power, successive-approximation ADC |
| 中文描述： | 评估板12位高速，低功耗，逐次逼近型ADC |
| 文件页数： | 1/14页 |
| 文件大小： | 722K |
| 代理商： | AD7492 |
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
REV. A
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
Evaluation Board for 12-bit high speed,
low power, successive-approximation ADC
EVAL-AD7492CB
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Full-Featured Evaluation Board for the AD7492
EVAL-CONTROL BRD2 Compatible
Stand Alone Capability
On-Board Analog Buffering and Reference
Optional On-Board Analog Bias-Up Circuit
Various Linking Options
PC Software for Control and Data Analysis when used
with EVAL-CONTROL BRD2
INTRODUCTION
This Technical Note describes the evaluation board for the
AD7492 12-bit, high speed, low power, internal reference
and clock, successive approximation A/D converter that
operates from a single 2.7 V to 5.25 V supply. Full data on
the AD7492 is available in the AD7492 data sheet available
from Analog Devices and should be consulted in conjunction
with this Technical Note when using the Evaluation Board.
On-board components include an AD780 which is a pin
programmable +2.5 V or +3 V ultra high precision bandgap
reference, two AD797 op-amps used to buffer the analog
input, and an OP07 op-amp used to buffer the DC bias
voltage applied to the optional analog input bias-up circuit.
There are various link options which are explained in detail
on page 2.
Interfacing to this board is through a 96-way connector. This
96-way connector is compatible with the EVAL-CONTROL
BRD2 which is also available from Analog Devices. External
sockets are provided for the
inputs.
input and the VIN
OPERATING THE AD7492 EVALUATION BOARD
Power Supplies
When using this evaluation board with the EVAL-CON-
TROL BRD2, all supplies are provided from the EVAL-
CONTROL BRD2 through the 96 way connector.
When using the board as a stand alone unit, external supplies
must be provided. This evaluation board has five power
supply inputs: V
DD
, A
GND
, V
SS
, V
DRIVE
and D
GND
. +5 V must
be connected to the V
DD
input to supply the AV
DD
and DV
DD
pins on the AD7492, the AD780 voltage reference, the
positive supply pin of all three op-amps and the digital
control logic. 0 V is connected to the A
GND
input. -5 V must
be connected to the V
SS
input to supply the negative supply
pins on all three op-amps. The V
DRIVE
input can be used to
provide an external voltage for the output drivers on the
AD7492. If an external V
DRIVE
is supplied, it is referenced to
the D
GND
input which should be tied to 0 V. The supplies are
decoupled to the relevant ground plane with 47μF tantalum
and 0.1μF multilayer ceramic capacitors at the point where
they enter the board. The supply pins of the op-amps and
!
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7492_01 | 制造商:AD 制造商全称:Analog Devices 功能描述:1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC |
| AD7492AR | 功能描述:IC ADC 12BIT W/REF W/CLK 24-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7492AR-5 | 制造商:Analog Devices 功能描述:ADC Single SAR 1.25Msps 12-bit Parallel 24-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:1.5MSPS 12-BIT ADC, INTERNAL REF + CLOCK - Bulk 制造商:Analog Devices 功能描述:12BIT ADC 1MSPS SMD 7492 SOIC24 |
| AD7492AR-5-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 1.25Msps 12-bit Parallel 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 1.25MSPS 12-BIT PARALLEL 24SOIC W - Tape and Reel |
| AD7492AR-5-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 1.25Msps 12-bit Parallel 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 1.25MSPS 12-BIT PARALLEL 24SOIC W - Tape and Reel |
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