7 FN6954.1 September 9, 2011 Noise Performance The ISL26132 and ISL26134 provide excellent noise performance. The noise perf" />
參數(shù)資料
型號: ISL26134AVZ
廠商: Intersil
文件頁數(shù): 21/23頁
文件大?。?/td> 0K
描述: IC ADC 24BIT SRL 80SPS 28TSSOP
標準包裝: 500
位數(shù): 24
采樣率(每秒): 80
數(shù)據(jù)接口: 串行
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 80mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 28-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 28-TSSOP
包裝: 管件
輸入數(shù)目和類型: 4 個差分,雙極
ISL26132, ISL26134
7
FN6954.1
September 9, 2011
Noise Performance
The ISL26132 and ISL26134 provide excellent noise
performance. The noise performance on each of the gain
settings of the PGA at the selected word rates is shown in
Tables 5 and 6.
Resolution in bits decreases by 1-bit if the ADC is operated as a
single-ended input device. Noise measurements are
input-referred, taken with bipolar inputs under the specified
operating conditions, with fCLK = 4.9152MHz.
TABLE 5. AVDD = 5V, VREF = 5V, DATA RATE = 10Sps
GAIN
RMS NOISE
(nV)
PEAK-TO-PEAK NOISE
(nV) (Note 10)
NOISE-FREE BITS
(Note 11)
1
243
1604
21.6
2
148
977
21.3
64
10.8
71
20.1
128
10.2
67
19.1
TABLE 6. AVDD = 5V, VREF = 5V, DATA RATE = 80Sps
GAIN
RMS NOISE
(nV)
PEAK-TO-PEAK NOISE
(nV) (Note 10)
NOISE-FREE BITS
(Note 11)
1
565
3730
20.4
2
285
1880
20.3
64
28.3
187
18.7
128
27
178
17.7
NOTES:
10. The peak-to-peak noise number is 6.6 times the rms value. This
encompasses 99.99% of the noise excursions that may occur. This
value best represents the worst case noise that could occur in the
output conversion words from the converter.
11. Noise-Free Bits is defined as: Noise-Free Bits = ln(FSR/peak-to-peak
noise)/ln(2) where FSR is the full scale range of the converter,
VREF/Gain.
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