参数资料
型号: ISL26132AVZ
厂商: Intersil
文件页数: 21/23页
文件大小: 0K
描述: IC ADC 24BIT SRL 80SPS 24TSSOP
标准包装: 620
位数: 24
采样率(每秒): 80
数据接口: 串行
转换器数目: 1
功率耗散(最大): 80mW
电压电源: 模拟和数字
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 24-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 24-TSSOP
包装: 管件
输入数目和类型: 2 个差分,双极
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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