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参数资料
| 型号： | AD7691BRMZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 17/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 18BIT SAR 250KSPS 10-MSOP |
| 标准包装： | 1,000 |
| 系列： | PulSAR® |
| 位数： | 18 |
| 采样率（每秒）： | 250k |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 12.5mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个差分，双极 |
| 配用： | EVAL-AD7691CBZ-ND - BOARD EVALUATION FOR AD7691CBZ |
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AD7691
Data Sheet
Rev. C | Page 24 of 28
APPLICATION HINTS
LAYOUT
The printed circuit board that houses the AD7691 should be
designed so that the analog and digital sections are separated
and confined to certain areas of the board. The pin
configuration of the AD7691, with its analog signals on the left
side and its digital signals on the right side, eases this task.
Avoid running digital lines under the device because this couples
noise onto the die unless a ground plane under the AD7691 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 AD7691.
The AD7691 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 AD7691
should be decoupled with ceramic capacitors, typically 100 nF,
placed close to the AD7691 and connected using short, wide
traces to provide low impedance paths and to reduce the effect
of glitches on the power supply lines.
An example layout following these rules is shown in Figure 47
and Figure 48.
EVALUATING THE AD7691 PERFORMANCE
Other recommended layouts for the AD7691 are outlined
in the documentation of the evaluation board for the AD7691
(EVAL-AD7691CBZ). The evaluation board package includes
a fully assembled and tested evaluation board, documentation,
and software for controlling the board from a PC via the
EVAL-CONTROL BRD3Z.
0
61
46
-0
23
Figure 47. Example Layout of the AD7691 (Top Layer)
06
14
6-
0
48
Figure 48. Example Layout of the AD7691 (Bottom Layer)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7693 | 制造商:AD 制造商全称:Analog Devices 功能描述:16-Bit Lower Power |
| AD76931 | 制造商:AD 制造商全称:Analog Devices 功能描述:18-Bit, 2 MSPS PulSAR 15 mW ADC in LFCSP (QFN) |
| AD7693BCPZ | 制造商:Analog Devices 功能描述:ADC SGL SAR 500KSPS 16BIT SERL 10LFCSP - Rail/Tube |
| AD7693BCPZ-R2 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD7693BCPZRL | 功能描述:IC ADC 16BIT 500KSPS 10LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
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