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参数资料
| 型号： | LMP90078MHX/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： | 7/62页 |
| 文件大小： | 1721K |
| 代理商： | LMP90078MHX/NOPB |
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14.0 Specific Definitions
COMMON MODE REJECTION RATIO
is a measure of how
well in-phase signals common to both input pins are rejected.
To calculate CMRR, the change in output offset is measured
while the common mode input voltage is changed.
CMRR
= 20 LOG(
ΔCommon Input / ΔOutput Offset)
EFFECTIVE NUMBER OF BITS (ENOB, or EFFECTIVE
BITS) –
says that the converter is equivalent to a perfect ADC
of this (ENOB) number of bits. LMP90080’s ENOB is a DC
ENOB spec, not the dynamic ENOB that is measured using
FFT and SINAD. Its equation is as follows:
GAIN ERROR
is the deviation from the ideal slope of the
transfer function.
INTEGRAL NON-LINEARITY (INL)
is a measure of the de-
viation of each individual code from a straight line through the
input to output transfer function. The deviation of any given
code from this straight line is measured from the center of that
code value. The end point fit method is used. INL for this
product is specified over a limited range, per the Electrical
Tables.
NEGATIVE FULL-SCALE ERROR
is the difference between
the differential input voltage at which the output code transi-
tions to negative full scale and (-VREF + 1LSB).
NEGATIVE GAIN ERROR
is the difference between the neg-
ative full-scale error and the offset error divided by (VREF /
Gain).
NOISE FREE RESOLUTION
is a method of specifying the
number of bits for a converter with noise.
ODR
Output Data Rate.
OFFSET ERROR
is the difference between the differential
input voltage at which the output code transitions from code
0000h to 0001h and 1 LSB.
POSITIVE FULL-SCALE ERROR
is the difference between
the differential input voltage at which the output code transi-
tions to positive full scale and (VREF – 1LSB).
POSITIVE GAIN ERROR
is the difference between the pos-
itive full-scale error and the offset error divided by (VREF /
Gain).
POWER SUPPLY REJECTION RATIO (PSRR)
is a measure
of how well a change in the analog supply voltage is rejected.
PSRR is calculated from the ratio of the change in offset error
for a given change in supply voltage, expressed in dB.
PSRR
= 20 LOG (
ΔVA / ΔOutput Offset)
15
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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 |
|---|---|
| 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 |
| LMP90080 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Sensor AFE System: Multi-Channel, Low-Power 16-Bit |
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