参数资料
型号: EVAL-AD7171EBZ
厂商: Analog Devices Inc
文件页数: 16/16页
文件大小: 0K
描述: BOARD EVAL FOR AD7171
标准包装: 1
ADC 的数量: 1
位数: 16
采样率(每秒): 125
数据接口: 串行
输入范围: ±VREF
工作温度: -40°C ~ 105°C
已用 IC / 零件: AD7171
已供物品:
Data Sheet
AD7171
Rev. A | Page 9 of 16
OUTPUT NOISE AND RESOLUTION SPECIFICATIONS
Table 6 shows the rms noise of the AD7171. The numbers given
are for a 5 V and a 3 V reference. These numbers are typical and
are generated with a differential input voltage of 0 V. The corres-
ponding p-p resolution is also listed along with the effective
resolution (ENOB). It is important to note that the effective
resolution is calculated using the rms noise, whereas the p-p
resolution is based on the p-p noise. The p-p resolution
represents the resolution for which there is no code flicker.
These numbers are typical.
The effective number of bits (ENOB) is defined as
ENOB = ln (FSR/RMS noise)/ln(2)
The noise-free bits, or p-p resolution, are defined as
Noise-Free Bits = ln (FSR/Peak-to-Peak Noise)/ln(2)
where FSR is the full-scale range and is equal to 2 × VREF/gain.
Table 6. RMS Noise and Resolution of the AD7171
VREF = VDD
RMS Noise
P-P Noise
P-P
Resolution
ENOB
5 V
11.5 μV
76 μV
16 bits
3 V
6.9 μV
45 μV
16 bits
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