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Table 5. Noise in μV
RMS
and (μV
PP
)
at AVDD = 3V, AVSS = 0V, and Internal Reference = 2.048V
DATA PGA SETTING
RATE
(SPS) 1 2 4 8 16 32 64 128
5 2.5 (14.24) 1.32 (6.92) 0.67 (3.48) 0.32 (1.68) 0.17 (0.9) 0.09 (0.51) 0.08 (0.42) 0.07 (0.39)
10 3.09 (16.85) 1.69 (9.32) 0.82 (4.68) 0.42 (2.41) 0.23 (1.18) 0.11 (0.63) 0.11 (0.66) 0.1 (0.55)
20 4.55 (24.74) 2.19 (12.82) 1.07 (5.94) 0.55 (3.38) 0.28 (1.66) 0.16 (1) 0.15 (0.92) 0.14 (0.87)
40 5.06 (34.59) 2.39 (14.49) 1.27 (7.75) 0.66 (4.01) 0.36 (2.18) 0.21 (1.16) 0.21 (1.27) 0.15 (0.84)
80 6.63 (43.46) 3.28 (20.22) 1.79 (10.64) 0.89 (5.48) 0.47 (2.95) 0.29 (1.63) 0.28 (1.64) 0.21 (1.24)
160 9.75 (68.28) 4.89 (32.19) 2.36 (17.74) 1.26 (9.87) 0.65 (4.77) 0.4 (2.6) 0.4 (2.7) 0.3 (2.12)
320 19.22 (140.06) 9.8 (82.24) 4.81 (32.74) 2.47 (18.59) 1.27 (9.45) 0.71 (5.83) 0.5 (3.36) 0.43 (2.86)
640 27.07 (192.96) 13.54 (100.26) 6.88 (49.07) 3.4 (25.93) 1.76 (12.49) 1.02 (7.49) 0.71 (4.81) 0.6 (4.06)
1000 40.83 (388.28) 20.39 (185.96) 10.39 (89.38) 5.09 (43.28) 2.66 (22.78) 1.45 (11.01) 0.93 (6.74) 0.74 (4.86)
2000 42.06 (322.85) 21.15 (166.75) 10.66 (92.68) 5.61 (44.08) 2.92 (23.06) 1.68 (11.71) 1.19 (8.23) 1.05 (6.97)
Table 6. Effective Number of Bits From RMS and (Peak-to-Peak Noise)
at AVDD = 3V, AVSS = 0V, and Internal Reference = 2.048V
DATA PGA SETTING
RATE
(SPS) 1 2 4 8 16 32 64 128
5 20.6 (18.1) 20.6 (18.2) 20.5 (18.2) 20.6 (18.2) 20.5 (18.1) 20.4 (17.9) 19.6 (17.2) 18.8 (16.3)
10 20.3 (17.9) 20.2 (17.7) 20.3 (17.7) 20.2 (17.7) 20.1 (17.7) 20.1 (17.6) 19.1 (16.6) 18.3 (15.8)
20 19.8 (17.3) 19.8 (17.3) 19.9 (17.4) 19.8 (17.2) 19.8 (17.2) 19.6 (17) 18.7 (16.1) 17.8 (15.2)
40 19.6 (16.9) 19.7 (17.1) 19.6 (17.0) 19.6 (17) 19.5 (16.8) 19.2 (16.8) 18.2 (15.6) 17.7 (15.2)
80 19.2 (16.5) 19.3 (16.6) 19.1 (16.6) 19.1 (16.5) 19 (16.4) 18.7 (16.3) 17.8 (15.3) 17.2 (14.7)
160 18.7 (15.9) 18.7 (16) 18.7 (15.8) 18.6 (15.7) 18.6 (15.7) 18.3 (15.6) 17.3 (14.5) 16.7 (13.9)
320 17.7 (14.8) 17.7 (14.6) 17.7 (14.9) 17.7 (14.7) 17.6 (14.7) 17.5 (14.4) 17 (14.2) 16.2 (13.4)
640 17.2 (14.4) 17.2 (14.3) 17.2 (14.3) 17.2 (14.3) 17.1 (14.3) 16.9 (14.1) 16.5 (13.7) 15.7 (12.9)
1000 16.6 (13.4) 16.6 (13.4) 16.6 (13.5) 16.6 (13.5) 16.6 (13.5) 16.4 (13.5) 16.1 (13.2) 15.4 (12.7)
2000 16.6 (13.6) 16.6 (13.6) 16.6 (13.4) 16.5 (13.5) 16.4 (13.4) 16.2 (13.4) 15.7 (12.9) 14.9 (12.2)
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