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参数资料
| 型号： | LMP90078MH/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO28 |
| 封装： | LEAD FREE, PLASTIC, MO-153, TSSOP-28 |
| 文件页数： | 20/62页 |
| 文件大小： | 1721K |
| 代理商： | LMP90078MH/NOPB |
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16.1.8 GPIO (D0–D6)
Pins D0-D6 are general purpose input/output (GPIO) pins that
can be used to control external LEDs or switches. Only a high
or low value can be sourced to or read from each pin.
Figure 11 shows a flowchart how these GPIOs can be pro-
grammed.
30169733
FIGURE 11. GPIO Register Settings
16.2 CALIBRATION
As seen in Figure 12, there are two types of calibration: back-
ground calibration and system calibration. These calibrations
are further described in the next sections.
30169779
FIGURE 12. Types of Calibration
16.2.1 Background Calibration
Background calibration is the process of continuously deter-
mining and applying the offset and gain calibration coeffi-
cients to the output codes to minimize the LMP900xx’s offset
and gain errors. Background calibration is a feature built into
the LMP900xx and is automatically done by the hardware
without interrupting the input signal.
Four differential channels, CH0-CH3, each with its own gain
and ODRs, can be calibrated to improve the accuracy.
Types of Background Calibration:
Figure 12 also shows that there are two types of background
calibration:
1.
Type 1: Correction - the process of continuously
determining and applying the offset and gain calibration
coefficients to the output codes to minimize the
LMP900xx’s offset and gain errors.
This method keeps track of changes in the LMP900xx's
gain and offset errors due to changes in the operating
condition such as voltage, temperature, or time.
2.
Type 2: Estimation - the process of determining and
continuously applying the last known offset and gain
27
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LMP90080/LMP90079/LMP90078/LMP90077
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LMP90078MHX/NOPB | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| LMP90079 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Sensor AFE System: Multi-Channel, Low-Power 16-Bit |
| LMP90079MH/NOPB | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| LMP90079MHE/NOPB | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| LMP90079MHX/NOPB | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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