参数资料
| 型号： | AD7280AWBSTZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 45/48页 |
| 文件大小： | 0K |
| 描述： | IC BATT MON LI-ION AUTO 48LQFP |
| 标准包装： | 1 |
| 功能： | 电池监控器，过压/欠压保护 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 8 V ~ 30 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 托盘 |
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AD7280A
If a second convert start signal is received by the AD7280A while
the conversion results are being read back, the data being read
back from the device, or chain of devices, can be corrupted. The
corruption of data occurs at the point in which the second con-
vert start signal is introduced. Any data read back prior to the
second convert start signal is correct, but data read back after
the second convert start signal may be corrupted.
Note that the corruption of data is not limited to the conversion
result. The device address, channel address, and CRC data can
also be corrupted. The CNVST control register should be used
POWER UP AD7280A
CHAIN OF DEVICES
WAIT AT LEAST 5.5ms FOR ALL DEVICES
TO BE FULLY POWERED UP
to gate the convert start signal. This prevents any glitches that
occur on the CNVST pin from being applied directly to the
internal circuitry of the AD7280A.
SOFTWARE FLOWCHART
See Figure 41 for a software flowchart of a suggested sequence
of steps that should be considered when operating the
AD7280A in a noisy environment.
INITIALIZE DEVICE IDs ON ALL
PARTS IN THE CHAIN
WRITE TO CONTROL REGISTER
TO RETURN DB1/DB2 TO
DEFAULT VALUES
NO
CHECK
INTEGRITY OF
CHAIN INITIALIZATION
BY READING BACK THE LOW
BYTE OF THE CONTROL
REGISTER FROM
ALL DEVICES
NOT
OK
HAVE ANY
PARTS IN THE
CHAIN RETURNED A
RESULT OF ALL 0s FROM
THE CONTROL
REGISTER?
YES
PLACE CHAIN IN POWER-DOWN MODE AND
WAIT AT LEAST 2ms FOR CAPACITORS ON
V REG AND V REF TO DISSIPATE CHARGE
OK
PROGRAM CONFIGURATION
REGISTERS AS REQUIRED
WRITE TO CNVST CONTROL
REGISTER TO ALLOW A SINGLE
CNVST PULSE THROUGH
INITIATE A
CONVERSION
READ BACK THE CONVERSION RESULTS FROM ALL DEVICES IN
THE DAISY-CHAIN READBACK MODE
IGNORE RESPECTIVE
32-BIT FRAME
NO
NO
IS THE
CRC CORRECT
FOR ALL DATA FRAMES
READ BACK?
YES
DATA VALIDATION
COMPLETE
HAS THE
REQUIRED NUMBER
OF CONVERSIONS BEEN
COMPLETED?
YES
POWER DOWN AD7280A
CHAIN OF DEVICES
Figure 41. Suggested Software Flowchart When Operating in a Noisy Environment
Rev. 0 | Page 45 of 48
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7280AWBSTZ-RL | 功能描述:IC BATT MON LI-ION AUTO 48LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| AD7280BSTZ | 制造商:Analog Devices 功能描述: |
| AD7280BSTZ-RL | 制造商:Analog Devices 功能描述: |
| AD7280BSTZ-U6 | 制造商:Analog Devices 功能描述: |
| AD7280S-OB | 制造商:Sony Nec Optiarc America 功能描述:24X DVDRW SATA (BLACK) - Bulk |
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