参数资料
| 型号： | AS8002-AQFP |
| 厂商： | ams |
| 文件页数： | 7/25页 |
| 文件大小： | 0K |
| 描述： | IC CURRENT MEASURE SOLAR 16VQFN |
| 标准包装： | 1 |
| 类型： | 电源管理 |
| 输入类型： | 模拟 |
| 输出类型： | 数字 |
| 接口： | SPI 串行 |
| 电流 - 电源： | 5mA |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN（4x4） |
| 包装： | 标准包装 |
| 其它名称： | AS8002-AQFPDKR |
www.austriamicrosystems.com/AS8002
Revision 1.1
14 - 24
AS8002
Data Sheet - D e t a i l e d D e s c r i p t i o n
7.7 Measurement Control and Calibration
The conversion starts on SCSB falling edge when adc_en is a 1. The value of the result of the conversion can be read at the next SPI write
command 10s later.
Figure 9. ADC Burst Mode
Read_meas will be transferred to the Current, Voltage or Auxiliary measurement upon mux_sel[2:0] value – curr_meas, volt_meas or
aux_meas.
Calibration is done according to the formulas:
For current channel:
read_meas = adc_meas * (1024 + pga_curr_gain_cal) / 1024
(EQ 1)
For voltage channel:
read_meas = adc_meas * (1024 + pga_volt_gain_cal) / 1024
(EQ 2)
For auxiliary channel:
read_meas = adc_meas * (1024 + aux_gain_cal) / 1024
(EQ 3)
Note:
The Raw ADC results are also available in the registers and are called adc_meas[11:0]
7.8 Interrupts
When an over current, an under voltage or an over temperature occurs the bit warning_detected is set to 1.
The interrupt state is present on interrupt_detected and on the pin XINT.
The statuses are available in the register Interrupt Status. It contains the bits over_currrent_int_en, under_voltage_int_en,
over_temp_int_en.
The generation of the interrupt can be enabled or disabled in the register “Interrupt Enable”. It contains the bits over_currrent_int_i,
under_voltage_int_i, over_temp_int_i.
Values of the register Interrupt Status are kept until this register is read.
Table 7. Current and Voltage Measurements
Name
Content
b15
b14
b13
b12
b11:b0
Current Measurement
0
warning_detected
interrupt_detected
X
curr_meas
Voltage Measurement
0
warning_detected
interrupt_detected
X
volt_meas
channel_1
channel_2
channel_3
channel_1
channel_2
Not updated
SCSB
channel measured
channel read
ams
AG
Technical
content
still
valid
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