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ADS1246 Datasheet(PDF) 13 Page - Texas Instruments |
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ADS1246 Datasheet(HTML) 13 Page - Texas Instruments |
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13 / 66 page  ADS1246 ADS1247 ADS1248 www.ti.com SBAS426D – AUGUST 2008 – REVISED MARCH 2010 Table 5. Noise in mVRMS and (mVPP) at AVDD = 5V, AVSS = 0V, and External Reference = 2.5V DATA PGA SETTING RATE (SPS) 1 2 4 8 16 32 64 128 5 1.10 (4.99) 0.68 (3.80) 0.37 (1.90) 0.19 (0.98) 0.10 (0.44) 0.07 (0.31) 0.05 (0.27) 0.05 (0.21) 10 1.53 (8.82) 0.82 (3.71) 0.50 (2.69) 0.27 (1.33) 0.15 (0.67) 0.08 (0.50) 0.06 (0.36) 0.07 (0.34) 20 2.32 (13.37) 1.23 (6.69) 0.71 (3.83) 0.34 (1.90) 0.18 (1.01) 0.12 (0.71) 0.10 (0.51) 0.09 (0.54) 40 2.72 (17.35) 1.33 (7.65) 0.68 (3.83) 0.38 (2.21) 0.22 (1.13) 0.14 (0.77) 0.15 (0.78) 0.14 (0.76) 80 3.56 (22.67) 1.87 (12.30) 0.81 (5.27) 0.50 (3.49) 0.30 (1.99) 0.19 (1.24) 0.19 (1.16) 0.18 (1.04) 160 5.26 (42.03) 2.52 (17.57) 1.32 (9.22) 0.67 (5.25) 0.41 (2.89) 0.26 (1.91) 0.27 (1.74) 0.26 (1.74) 320 9.39 (74.91) 4.68 (39.48) 2.69 (18.95) 1.24 (9.94) 0.68 (5.25) 0.45 (3.08) 0.38 (2.71) 0.36 (2.46) 640 13.21 (119.66) 6.93 (59.31) 3.59 (28.55) 1.53 (10.68) 0.95 (8.70) 0.63 (4.94) 0.53 (3.74) 0.50 (3.55) 1000 32.34 (443.91) 16.11 (185.67) 11.54 (92.23) 4.65 (37.55) 2.02 (23.14) 1.15 (12.29) 0.77 (7.42) 0.64 (4.98) 2000 32.29 (372.54) 15.99 (182.27) 8.02 (91.73) 4.08 (45.89) 2.19 (24.14) 1.36 (12.32) 1.08 (8.03) 1.00 (6.93) Table 6. Effective Number of Bits From RMS Noise and (Peak-to-Peak Noise) at AVDD = 5V, AVSS = 0V, and External Reference = 2.5V DATA PGA SETTING RATE (SPS) 1 2 4 8 16 32 64 128 5 21.8 (19.6) 21.5 (19.0) 21.4 (19.0) 21.4 (19.0) 21.3 (19.2) 20.9 (18.7) 20.2 (17.8) 19.4 (17.2) 10 21.4 (18.8) 21.3 (19.1) 21.0 (18.5) 20.8 (18.6) 20.7 (18.6) 20.6 (18.0) 19.9 (17.5) 18.9 (16.5) 20 20.8 (18.2) 20.7 (18.2) 20.5 (18.0) 20.5 (18.0) 20.4 (18.0) 20.0 (17.5) 19.3 (16.9) 18.4 (15.9) 40 20.5 (17.8) 20.6 (18.0) 20.5 (18.0) 20.4 (17.8) 20.2 (17.8) 19.8 (17.4) 18.7 (16.3) 17.8 (15.4) 80 20.1 (17.5) 20.1 (17.3) 20.3 (17.6) 20.0 (17.2) 19.7 (17.0) 19.4 (16.7) 18.4 (15.7) 17.5 (14.9) 160 19.6 (16.6) 19.6 (16.8) 19.6 (16.8) 19.5 (16.6) 19.3 (16.4) 18.9 (16.0) 17.9 (15.2) 16.9 (14.2) 320 18.7 (15.7) 18.7 (15.7) 18.5 (15.7) 18.7 (15.7) 18.5 (15.6) 18.1 (15.3) 17.4 (14.5) 16.5 (13.7) 640 18.2 (15.1) 18.2 (15.1) 18.1 (15.1) 18.4 (15.5) 18.0 (14.8) 17.6 (14.7) 16.9 (14.1) 16.0 (13.1) 1000 17.0 (13.2) 17.0 (13.4) 16.4 (13.4) 16.7 (13.7) 17.0 (13.4) 16.8 (13.3) 16.4 (13.1) 15.6 (12.6) 2000 17.0 (13.4) 17.0 (13.5) 17.0 (13.4) 16.9 (13.4) 16.8 (13.4) 16.5 (13.3) 15.9 (13.0) 15.0 (12.2) Copyright © 2008–2010, Texas Instruments Incorporated Submit Documentation Feedback 13 Product Folder Link(s): ADS1246 ADS1247 ADS1248 |
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