参数资料
型号: ADUC7033BSTZ-88-RL
厂商: Analog Devices Inc
文件页数: 64/140页
文件大小: 0K
描述: IC BATT SENSOR PREC 48LQFP
标准包装: 2,000
功能: 电池监控器
电源电压: 3.5 V ~ 18 V
工作温度: -40°C ~ 115°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: 带卷 (TR)
ADuC7033
In summary, the simplified ADC transfer function can be
described as
Low Power Plus Mode
The PGA gain is set to 512 and the K factor is 8.
= ? IN
? ADCOF ? ×
ADC OUT
? V × PGA
? V REF
?
?
ADCGN
ADCGN NOM
In low power and low power plus modes, the K factor doubles if
(REG_AVDD)/2 is used as the reference.
ADC OUT = ?
? V IN × PGA ? ADCGN
This equation is valid for the voltage/temperature channel ADC.
For the current channel ADC,
? K × ADCOF ? ×
? V REF ? ADCGN NOM
where K is dependent on the PGA gain setting and ADC mode.
Normal Mode
For PGA gains of 1, 4, 8, 16, 32, and 64, the K factor is 1. For
PGA gains of 2 and 128, the K factor is 2. For a PGA gain of
256, the K factor is 4. For a PGA gain of 512, the K factor is 8.
Low Power Mode
The PGA gain is set to 128 and the K factor is 32.
ADC DIAGNOSTICS
The ADuC7033 features diagnostic capability on both ADCs.
Current ADC Diagnostics
The ADuC7033 features the capability to detect open-circuit
conditions on the application board. This is accomplished using
the two current sources on IIN+ and IIN?; these are controlled
via ADC0CON[14:13].
Note that these current sources have a tolerance of ±30%. A
PGA gain ≥ 2 (ADC0CON[3:0] ≥ 0001) must be used when
current sources are enabled.
Temperature ADC Diagnostics
The ADuC7033 features the capability to detect open-circuit
conditions on the temperature channel inputs. This is
accomplished using the two current sources on VTEMP and
GND_SW, controlled via ADC1CON[14:13].
Rev. B | Page 64 of 140
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