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| 型号： | AD7356YRUZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/21页 |
| 文件大小： | 0K |
| 描述： | IC ADC DUAL 12BIT 5MSPS 16TSSOP |
| 设计资源： | DC-Coupled, Single-Ended-to-Differential Conversion Using AD8138 and AD7356 (CN0041) |
| 标准包装： | 2,500 |
| 位数： | 12 |
| 采样率（每秒）： | 50k |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 59mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个差分，双极 |
AD7356
Rev. A | Page 19 of 20
APPLICATION HINTS
GROUNDING AND LAYOUT
The analog and digital supplies to the AD7356 are independent
and separately pinned out to minimize coupling between the
analog and digital sections of the device. The printed circuit
board (PCB) that houses the AD7356 should be designed so
that the analog and digital sections are separated and confined
to certain areas of the board. This design facilitates the use of
ground planes that can be easily separated.
To provide optimum shielding for ground planes, a minimum
etch technique is generally best. The two AGND pins of the
AD7356 should be sunk in the AGND plane. The REFGND
pin should also be sunk in the AGND plane. Digital and analog
ground planes should be joined in only one place. If the
AD7356 is in a system in which multiple devices require an
AGND and DGND connection, the connection should still
be made at one point only, a star ground point that should
be established as close as possible to the ground pins on the
AD7356.
Avoid running digital lines under the device because this
couples noise onto the die. Allow the analog ground planes
to run under the AD7356 to avoid noise coupling. The power
supply lines to the AD7356 should use as large a trace as possible
to provide low impedance paths and reduce the effects of
glitches on the power supply line.
To avoid radiating noise to other sections of the board, shield
fast switching signals such as clocks, with digital ground; and
never run clock signals near the analog inputs. Avoid crossover
of digital and analog signals. To reduce the effects of feed-
through within the board, traces on opposite sides of the
board should run at right angles to each other. A microstrip
technique is the best method but is not always possible with a
double sided board. In this technique, the component side of
the board is dedicated to ground planes and signals are placed
on the solder side.
Good decoupling is important; decouple all supplies with 10 μF
tantalum capacitors in parallel with 0.1 μF capacitors to GND.
To achieve the best results from these decoupling components,
they must be placed as close as possible to the device, ideally
right up against the device. The 0.1 μF capacitor, (including the
common ceramic types or surface-mount types) should have
low effective series resistance (ESR) and effective series induc-
tance (ESI). These low ESR and ESI capacitors provide a low
impedance path to ground at high frequencies to handle
transient currents due to logic switching.
EVALUATING THE AD7356 PERFORMANCE
The recommended layout for the AD7356 is outlined in the
evaluation board documentation. The evaluation board package
includes a fully assembled and tested evaluation board, docu-
mentation, and software for controlling the board from the PC
via the converter evaluation and development board (CED).
The CED can be used in conjunction with the AD7356 eval-
uation board (as well as many other evaluation boards ending
in the ED designator from Analog Devices, Inc.) to demonstrate/
evaluate the ac and dc performance of the AD7356.
The software allows the user to perform ac (fast Fourier transform)
and dc (linearity) tests on the AD7356. The software and docu-
mentation are on a CD shipped with the evaluation board.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7357 | 制造商:AD 制造商全称:Analog Devices 功能描述:Differential Input, Dual, Simultaneous Sampling, 4.2 MSPS, 14-Bit, SAR ADC |
| AD7357_08 | 制造商:AD 制造商全称:Analog Devices 功能描述:Differential Input, Dual, Simultaneous Sampling, 4.2 MSPS, 14-Bit, SAR ADC |
| AD7357_09 | 制造商:AD 制造商全称:Analog Devices 功能描述:Differential Input, Dual, Simultaneous Sampling, 4.2 MSPS, 14-Bit, SAR ADC |
| AD7357BCPZ | 功能描述:14 Bit Analog to Digital Converter 2 Input 2 SAR 18-LFCSP-WQ (5x4) 制造商:analog devices inc. 系列:- 包装:托盘 零件状态:有效 位数:14 采样率（每秒）:4.2M 输入数:2 输入类型:差分 数据接口:SPI，DSP 配置:S/H-ADC 无线电 - S/H:ADC:1:1 A/D 转换器数:2 架构:SAR 参考类型:外部， 内部 电压 - 电源，模拟:2.25 V ~ 2.75 V 电压 - 电源，数字:2.25 V ~ 2.75 V 特性:同步采样 工作温度:-40°C ~ 85°C 封装/外壳:18-WQFN 裸露焊盘，CSP 供应商器件封装:18-LFCSP-WQ（5x4） 标准包装:1 |
| AD7357BCPZ-RL | 功能描述:14 Bit Analog to Digital Converter 2 Input 2 SAR 18-LFCSP-WQ (5x4) 制造商:analog devices inc. 系列:- 包装:带卷（TR） 零件状态:有效 位数:14 采样率（每秒）:4.2M 输入数:2 输入类型:差分 数据接口:SPI，DSP 配置:S/H-ADC 无线电 - S/H:ADC:1:1 A/D 转换器数:2 架构:SAR 参考类型:外部， 内部 电压 - 电源，模拟:2.25 V ~ 2.75 V 电压 - 电源，数字:2.25 V ~ 2.75 V 特性:同步采样 工作温度:-40°C ~ 85°C 封装/外壳:18-WQFN 裸露焊盘，CSP 供应商器件封装:18-LFCSP-WQ（5x4） 标准包装:5,000 |
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