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參數(shù)資料
| 型號(hào)： | EVAL-AD7170EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD7170 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 125 |
| 數(shù)據(jù)接口： | 串行 |
| 輸入范圍： | ±VREF |
| 工作溫度： | -40°C ~ 105°C |
| 已用 IC / 零件： | AD7170 |
| 已供物品： | 板 |
Data Sheet
AD7170
Rev. A | Page 9 of 16
OUTPUT NOISE AND RESOLUTION SPECIFICATIONS
Table 6 shows the rms noise of the AD7170. 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
corresponding 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 AD7170
VREF = VDD
RMS Noise
P-P Noise
P-P
Resolution
ENOB
5 V
11.5 μV
76 μV
12 bits
3 V
6.9 μV
45 μV
12 bits
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