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| 型号： | EVAL-AD7699EDZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/28页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7699 |
| 标准包装： | 1 |
| 系列： | PulSAR® |
| ADC 的数量： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 500k |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 输入范围： | 0 ~ Vdd |
| 在以下条件下的电源（标准）： | 28mW @ 500kSPS |
| 工作温度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD7699 |
| 已供物品： | 板 |
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AD7699
Data Sheet
Rev.
| Page 26 of 28
APPLICATION HINTS
LAYOUT
The printed circuit board that houses the AD7699 should be
designed so that the analog and digital sections are separated
and confined to certain areas of the board. The pinout of the
AD7699, with all its analog signals on the left side and all its
digital signals on the right side, eases this task.
Avoid running digital lines under the device because these couple
noise onto the die unless a ground plane under the AD7699 is
used as a shield. Fast switching signals, such as CNV or clocks,
should not run near analog signal paths. Crossover of digital
and analog signals should be avoided.
At least one ground plane should be used. It can be common or
split between the digital and analog sections. In the latter case,
the planes should be joined underneath the AD7699.
The AD7699 voltage reference input, REF, has a dynamic input
impedance and should be decoupled with minimal parasitic
inductances. This is done by placing the reference decoupling
ceramic capacitor close to, ideally right up against, the REF and
GND pins and connecting them with wide, low impedance traces.
Finally, the power supplies, VDD and VIO, of the AD7699
should be decoupled with ceramic capacitors, typically 100 nF,
placed close to the AD7699 and connected using short, wide
traces to provide low impedance paths and to reduce the effect
of glitches on the power supply lines.
EVALUATING AD7699 PERFORMANCE
Other recommended layouts for the AD7699 are outlined in the
AD76MUXCBZ). The evaluation board package includes a fully
assembled and tested evaluation board, documentation, and
software for controlling the board from a PC via the evaluation
controller board, EVAL-CONTROL BRD3.
B
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