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| 型号： | AD7280ABSTZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 38/48页 |
| 文件大小： | 0K |
| 描述： | IC BATT MONITOR LI-ION 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
EXAMPLES OF INTERFACING WITH THE AD7280A
The AD7280A supports a number of read options. The user can
read back the results from
CONVERT AND READBACK ROUTINE
When conversion data from any or all of the AD7280As in a
?
?
?
All conversions completed on all parts in the chain
Individual registers on all parts in the chain
Individual registers on selected parts in the chain
daisy chain is read back, the conversion results returned from
the AD7280A are the last completed set of conversions on that
part. It is recommended that the user also set Bits[D15:D14] of
In each case, the user must first write to the read register on the
selected parts to configure that part to supply the correct data
on the outputs. When reading back an individual register, the
address of that register should be written to the read register of
the selected part. When reading back conversion results from
any or all parts in the chain, an address of 0x00 should be written
to the read register of the selected parts.
When the address written to the read register is 0x00, the
conversion results selected for readback are controlled by
setting Bits[D13:D12] of the control register (see Table 14).
These bits allow the user to select one of four different read-
back options:
? Read back 12 conversion results: six voltage and six
auxiliary.
? Read back nine conversion results: six voltage and three
auxiliary.
? Read back six conversion results: six voltage results only.
? Switch off the read operation on this part.
the control register to select the number of conversions to be
completed on each part and initiate the conversions through
either the CNVST pin or the rising edge of CS as part of the
read operation. In this way, the user can implement a simple
convert and readback routine with the most efficient number
of 32-bit write and read operations.
A general example of this routine, which converts and reads
back from all parts in the AD7280A daisy chain, is as follows:
1. Write 0x00 to the read register on all parts in the daisy
chain. Note that 0x00 is the default value of this register
on power-up and following a software reset operation.
2. Write to the control register on all parts. Set Bits[D15:D14]
to select the required conversions. Set Bits[D13:D12] to
select the required conversion results for readback.
3. Initiate the conversions through either the falling edge of
CNVST or the rising edge of CS (set Bit D11 of the control
register to select the conversion start format).
4. Allow sufficient time for each conversion to be completed
To read back an individual register from a single AD7280A in
the daisy chain, follow these steps:
5.
Apply a CS low pulse that frames 32 SCLKs for each
1.
2.
On all other parts in the chain, set Bits[D13:D12] of the
control register to 11 to select the no-read operation on
those parts.
On the targeted part, set Bits[D13:D12] of the control
register to turn on the read operation.
conversion result to be read back.
EXAMPLES
The following examples of conversion and/or readback routines
can be used in an application that implements a chain of AD7280A
devices to monitor the voltage and/or auxiliary ADC inputs of
Note that it is more efficient in terms of 32-bit write cycles to
the AD7280A on a stack of lithium ion batteries.
first switch off the read operation on all AD7280As in the daisy
chain. This is achieved with a single write cycle, using Bit D12
in the write command to address all parts in the chain. The user
can then address the individual part and set Bits[D13:D12] of
the control register to turn on the read operation for that part.
Rev. 0 | Page 38 of 48
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7280ABSTZ-RL | 功能描述:IC BATTERY MONITOR LI-ION 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) |
| AD7280AWBSTZ | 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) |
| 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: |
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