Datasheet

LMP90100
SNAS510P –JANUARY 2011–REVISED MARCH 2013 www.ti.com
Table 2. ENOB (Noise Free Resolution) vs. Sampling Rate and Gain at VA = VIO = VREF = 3V
Gain
ODR (SPS)
1 2 4 8 16 32 64 128
1.6775 20.5 (18) 20.5 (18) 19.5 (17) 19 (16.5) 20.5 (18) 19.5 (17) 19 (16.5) 18 (15.5)
3.355 20 (17.5) 20 (17.5) 19 (16.5) 18.5 (16) 20 (17.5) 19 (16.5) 18.5 (16) 17 (14.5)
6.71 19.5 (17) 19.5 (17) 18.5 (16) 18 (15.5) 19.5 (17) 18.5 (16) 17.5 (15) 17 (14.5)
13.42 19 (16.5) 18.5 (16) 18 (15.5) 17.5 (15) 19 (16.5) 18 (15.5) 17.5 (15) 16.5 (14)
26.83125 20.5 (18) 20 (17.5) 19.5 (17) 19 (16.5) 20 (17.5) 19 (16.5) 18 (15.5) 17.5 (15)
53.6625 20 (17.5) 19.5 (17) 19 (16.5) 18.5 (16) 19.5 (17) 18.5 (16) 17.5 (15) 17 (14.5)
107.325 19.5 (17) 19 (16.5) 18.5 (16) 18 (15.5) 19 (16.5) 18 (15.5) 17 (14.5) 16.5 (14)
214.65 19 (16.5) 18.5 (16) 18 (15.5) 17.5 (15) 18.5 (16) 17.5 (15) 17 (14.5) 16 (13.5)
Table 3. RMS Noise (µV) vs. Sampling Rate and Gain at VA = VIO = VREF = 3V
Gain of the ADC
ODR (SPS)
1 2 4 8 16 32 64 128
1.6775 3.08 1.90 1.53 1.27 0.23 0.21 0.15 0.14
3.355 4.56 2.70 2.21 1.67 0.34 0.27 0.24 0.26
6.71 6.15 4.10 3.16 2.39 0.51 0.40 0.37 0.35
13.42 8.60 5.85 4.29 3.64 0.67 0.54 0.51 0.49
26.83125 3.35 2.24 1.65 1.33 0.33 0.27 0.26 0.25
53.6625 4.81 3.11 2.37 1.90 0.44 0.39 0.37 0.36
107.325 6.74 4.51 3.38 2.66 0.63 0.54 0.52 0.49
214.65 9.52 6.37 4.72 3.79 0.90 0.79 0.72 0.70
Table 4. ENOB (Noise Free Resolution) vs. Sampling Rate and Gain at VA = VIO = VREF = 5V
Gain of the ADC
SPS
1 2 4 8 16 32 64 128
1.6775 21.5 (19) 21.5 (19) 20.5 (18) 20 (17.5) 21 (18.5) 20.5 (18) 19.5 (17) 18.5 (16)
3.355 21 (18.5) 21 (18.5) 20 (17.5) 19.5 (17) 20.5 (18) 20 (17.5) 19 (16.5) 18 (15.5)
6.71 20.5 (18) 20 (17.5) 19.5 (17) 19 (16.5) 20 (17.5) 19.5 (17) 19 (16.5) 17.5 (15)
13.42 20 (17.5) 19.5 (17) 19 (16.5) 18.5 (16) 20 (17.5) 19 (16.5) 18 (15.5) 17.5 (15)
26.83125 21.5 (19) 21 (18.5) 20.5 (18) 20 (17.5) 21 (18.5) 20 (17.5) 19.5 (17) 18 (15.5)
53.6625 21 (18.5) 20.5 (18) 20 (17.5) 19.5 (17) 20.5 (18) 19.5 (17) 18.5 (16) 17.5 (15)
107.325 20.5 (18) 20 (17.5) 19.5 (17) 19 (16.5) 20 (17.5) 19 (16.5) 18 (15.5) 17 (14.5)
214.65 20 (17.5) 19.5 (17) 19 (16.5) 18.5 (16) 19.5 (17) 18.5 (16) 17.5 (15) 16.5 (14)
Table 5. RMS Noise (µV) vs. Sampling Rate and Gain at VA = VIO = VREF = 5V
Gain of the ADC
SPS
1 2 4 8 16 32 64 128
1.6775 2.68 1.65 1.24 1.00 0.22 0.19 0.17 0.16
3.355 3.86 2.36 1.78 1.47 0.34 0.27 0.22 0.22
6.71 5.23 3.49 2.47 2.09 0.44 0.34 0.30 0.32
13.42 7.94 5.01 3.74 2.94 0.61 0.50 0.45 0.43
26.83125 2.90 1.86 1.34 1.08 0.29 0.24 0.23 0.23
53.6625 4.11 2.60 1.90 1.50 0.39 0.35 0.32 0.31
107.325 5.74 3.72 2.72 2.11 0.56 0.48 0.46 0.44
214.65 8.25 5.31 3.82 2.97 0.79 0.68 0.64 0.63
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