參數(shù)資料
型號(hào)： AS8002-AQFP
廠商： ams
文件頁(yè)數(shù)： 6/25頁(yè)
文件大?。?/td> 0K
描述： IC CURRENT MEASURE SOLAR 16VQFN
標(biāo)準(zhǔn)包裝： 1
類(lèi)型： 電源管理
輸入類(lèi)型： 模擬
輸出類(lèi)型： 數(shù)字
接口： SPI 串行
電流 - 電源： 5mA
安裝類(lèi)型： 表面貼裝
封裝/外殼： 16-VQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 16-QFN（4x4）
包裝： 標(biāo)準(zhǔn)包裝
其它名稱(chēng)： AS8002-AQFPDKR
www.austriamicrosystems.com/AS8002
Revision 1.1
13 - 24
AS8002
Data Sheet - D e t a i l e d D e s c r i p t i o n
7.6 Measurement Example
The following example shows a simple way to alternately read the voltage and current values:
Bits [b2:b0] in Addr 03h control the ADC input multiplexer:
1. Select the Current channel input (IOM, IOP) : 0610h
- Set the Address [A6:A0] to 03h,
- Set the R/W bit to 0 (write mode) and the data to 10h (adc_en = 1, mux_sel = 0)
- In parallel to writing the 16-bit data on SDI, a set of 16-bit data can be read on SDO, which contains the data from the second to last
command.
2. Select the Voltage channel input (V1M, V1P) : 0611h
- Set the Address [A6:A0] to 03h,
- Set the R/W bit to 0 (write mode) and the data to 11h (adc_en = 1, mux_sel = 1)
- In parallel to writing the 16-bit data on SDI, a set of 16-bit data can be read on SDO, which contains the data from the second to last
command.
3. Change the input multiplexer back to Current channel input (IOM, IOP) : 0610h
- Repeat the sequence 1 above: addr = 03h, data = 10h,
- The 16-bit current input data from the second to last invoked command (1 above) can be read on SDO.
4. Loop sequences 2 and 3
Note:
In sequence 2, the 16-bit voltage input data from the second to last command can be read on SDO.
Figure 8. Measurement Diagram
Note:
The 16-bit input data from the voltage and current measurements contain the ADC data in the lower 12 bits and two status bits in the
Name
Addr
Default
Content
b7
b6
b5
b4
b3
b2
b1
b0
Input Multiplexer
03h
00h
adc_en
mux_sel[2:0]
0: Current channel PGA output
1: Voltage channel PGA output
set Mux to
Current
measurement
set Mux to
Voltage
measurement
set Mux to
Current
measurement
set Mux to
Voltage
measurement
SDI
MSB
0610h
LSB
data from
previous
command
data from
previous
command
read Current
input value
read Voltage
input value
SDO
MSB
LSB
MSB
LSB
MSB
LSB
MSB
LSB
Transmission 1
Transmission 2
Transmission 3
Transmission 4
1)
2)
3)
4)=2)
MSB
0611h
LSB
MSB
0610h
LSB
MSB
0611h
LSB
ams
AG
Technical
content
still
valid
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