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| 型号： | AD7280ABSTZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 41/48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
Example 4: Convert and Read a Single Voltage
or Auxiliary ADC Input Result from One Part
In this example, it is assumed that all AD7280As in the daisy
chain have been initialized to their correct device addresses.
4.
Program the CNVST control register to 0x02 on Device 3
to allow conversions to be initiated using the CNVST pin
on that part. The 32-bit write command is 0xC3A0417A
(see Table 26 , Write 4).
1.
2.
3.
The register address corresponding to the voltage or
auxiliary ADC input result to be read should be written to
the read register of the part to be read (see Table 13 for
register addresses). In this example, the Cell Voltage 6
register result is read from Device 3 in the stack. The 32-bit
write command is 0xC382865A (see Table 26, Write 1).
Set Bits[D13:D12] of the control register to 1 on all parts.
This setting turns off the read operation on all parts. The
Write 2).
Set Bits[D13:D12] of the control register of the part to be
read from such that the required voltage is read back. With
the exception of a self-test conversion, it is not possible to
convert on a single channel; six, nine, or 12 conversions must
be completed. This example reads a voltage conversion from
Device 3 in the stack; therefore, Bit D14 and Bit D12 of the
control register should be set to 0, and Bit D15 and Bit D13
should be set to 1 on Device 3. The 32-bit write command
is 0xC1B400FA (see Table 26, Write 3).
5.
6.
7.
8.
Initiate conversions through the falling edge of CNVST.
Allow sufficient time for all conversions to be completed
plus t WAIT .
Program the CNVST control register to gate the CNVST
signal on all parts. The 32-bit write command is
0x03A0340A (see Table 26 , Write 5). This write prevents
unintentional conversions from being initiated by noise or
glitches on the CNVST pin. This write also updates the on-
chip output registers of all devices in the daisy chain.
Apply a CS low pulse that frames 32 SCLKs to read back
the desired voltage or auxiliary ADC result. This frame
should simultaneously write the 32-bit command
0xF800030A, as described in the Serial Interface section
(see Table 26 , Write 6).
Note that when reading from a single device in a stack of
AD7280As, the SCLK frequency must be lower than 1 MHz
to read back the register data from parts higher in the chain
than the master device.
Table 26. Example 4: Converting and Reading a Single Voltage or Auxiliary ADC Result from One AD7280A Device
32-Bit Write
Write Command
Write 1
Write 2
Write 3
Write 4
Write 5
Write 6
Device Address
11000
00000
11000
11000
00000
11111
Register Address
011100
001101
001101
011101
011101
000000
Data
00010100
10110000
10100000
00000010
00000001
00000000
Write All
0
1
0
0
1
0
D11
0
0
0
0
0
0
8-Bit CRC
11001011
11111101
00011111
10000111
10000001
01100001
D2 to D0
010
010
010
010
010
010
Command
0xC382865A
0x01B617EA
0xC1B400FA
0xC3A0417A
0x03A0340A
0xF800030A
Rev. 0 | Page 41 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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