- 您现在的位置：买卖IC网 > PDF目录1215 > EVAL-CN0235-SDPZ (Analog Devices Inc)BOARD EVAL LITHIUM ION MONITOR PDF资料下载
参数资料
| 型号： | EVAL-CN0235-SDPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/6页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL LITHIUM ION MONITOR |
| 设计资源： | CN0235 Design & Integration Files |
| 标准包装： | 1 |
| 系列： | Circuits from the Lab™ |
| 主要目的： | 电源管理，电池监控器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | AD7280A，AD8280，ADuM1400，ADuM1401，ADuM5404 |
| 主要属性： | 隔离 |
| 已供物品： | 板 |
Circuit Note
The SDOlo and ALERTlo daisy-chain connections pass data
9000
CN-0235
down the chain, and the 22 pF capacitors on these pins are
terminated to the VDD of the lower device in the chain. A direct
low impedance trace is used to connect the VDD of the lower
device with the VSS of the upper device to hold the two
potentials as close as possible together in a noisy environment.
A ground fence at the isolation barrier is used to enclose the low
8000
7000
6000
5000
4000
7893
voltage side, which consists of the left hand side of the PCB.
This fence consists of a guard ring laced together by vias and
connects to the digital ground on all layers throughout the
board. Noise on power and ground planes that reach the edge of
the circuit board can radiate causing emissions, but with this
shielded structure the noise is reflected back.
3000
2000
1000
0
531
2555
2556
CODE
1701
2557
115
2558
Input-to-output dipole radiation can also be generated when
Figure 6. Histogram of Codes for 10,000 Samples, VIN4 – VIN3 of Device 0
driving a current source across a gap between ground planes. To
help minimize this, a continuous shield is used at the isolation
gap whereby the ground planes are extended on all layers
throughout the PCB to create a cross-barrier coupling using
overlapping shields; and the isolation gap on each layer is kept
to a minimum, with a gap of 0.008 inches used on the tested
board. For further recommendations to control radiated
emissions with isoPower? devices, such as the ADuM5404 used
Test Results
6000
5000
4000
3000
2000
1000
5019
4016
921
An important measure of the performance of the circuit is the
amount of noise in the final output voltage measurement.
0
246
2404
2405
2406
2407
Figure 6 shows a histogram of 10,000 measurement samples
taken for the VIN3?VIN2 channel. This data was taken
with the CN0235 Evaluation Board connected to the
EVAL-SDP-CB1Z System Demonstration Platform (SDP-B)
evaluation board. Details of the setup are described in the
Circuit Evaluation and Test section of this circuit note.
Twelve Li-Ion batteries were connected to the input screw
terminals. Note that there are only a small percentage of codes
that fall outside the primary bin due to noise. Figure 6 and
Figure 7 show 3 LSBs peak-to-peak noise, corresponding to
approximately 0.5 LSBs rms.
A complete design support package for this circuit note can be
found at www.analog.com/CN0235-DesignSupport.
CODE
Figure 7. Histogram for 10,000 Samples, VIN4 - VIN3 of Device 1
COMMON VARIATIONS
The circuit is proven to work with good stability and accuracy.
Other combinations of isolated channels can be used with the
i Coupler isolation products.
CIRCUIT EVALUATION AND TEST
This circuit uses the EVAL-CN0235-SDPZ circuit board and
the EVAL-SDP-CB1Z System Demonstration Platform (SDP-B)
evaluation board. The two boards have 120-pin mating
connectors, allowing for the quick setup and evaluation of the
circuit’s performance. The EVAL-CN0235-SDPZ board contains
the circuit to be evaluated, as described in this note, and the
SDP-B evaluation board is used with the CN0235 evaluation
software to capture the data from the EVAL-CN0235-SDPZ
circuit board.
Rev. 0 | Page 5 of 6
相关PDF资料 |
PDF描述 |
|---|---|
| EVAL-CN0253-SDPZ | EVAL MONITOR CIRCUIT FRONT END |
| EVAL-CN0271-SDPZ | EVAL SYSTEM FOR CN0271 |
| EVAL-INAMP-82RMZ | BOARD EVAL FOR AD8220 MSOP |
| EVAL-PRAOPAMP-1KSZ | ADAPTOR BOARD SINGLE AMP SC70-5 |
| EVAL-PRAOPAMP-1RJZ | ADAPTOR BOARD SINGLE AMP SOT23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-CN0240-SDPZ | 功能描述:BOARD EVAL ISOLATED CURR SENSOR RoHS:是 类别:编程器，开发系统 >> 评估板 - 传感器 系列:Circuits from the Lab™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| EVAL-CN0241-SDPZ | 功能描述:BOARD EVAL FOR CN0241-SDPZ RoHS:是 类别:编程器，开发系统 >> 评估板 - 传感器 系列:Circuits from the Lab™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| EVAL-CN0243-EB1Z | 功能描述:RF EVAL SIGNAL CHAIN DAC IQ MOD RoHS:是 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:- 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
| EVAL-CN0251-SDPZ | 功能描述:其他开发工具 Flexible Signal Conditioning for PLC/DCS RoHS:否 制造商:Parallax 产品:ELEV-8 Hex Upgrade Kits 类型:Robotics 工具用于评估:ELEV-8 Quadcopter 工作电源电压: |
| EVAL-CN0253-SDPZ | 功能描述:EVAL MONITOR CIRCUIT FRONT END RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:* 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
发布紧急采购，3分钟左右您将得到回复。