Datasheet

ADS1299
www.ti.com SBAS499A –JULY 2012–REVISED AUGUST 2012
Table 3. Input-Referred Noise (μV
RMS
/ μV
PP
) in Normal Mode
5-V Analog Supply and 4.5-V Reference
(1)
PGA PGA
GAIN = 8 GAIN = 12
DR BITS OF OUTPUT NOISE- NOISE-
CONFIG1 DATA RATE –3-dB FREE FREE
REGISTER (SPS) BANDWIDTH (Hz) μV
RMS
μV
PP
SNR (dB) BITS ENOB μV
RMS
μV
PP
SNR (dB) BITS ENOB
000 16000 4193 3.05 21.32 102.3 15.69 16.99 2.27 15.89 101.3 15.53 16.83
001 8000 2096 1.11 7.80 111.0 17.14 18.45 0.92 6.41 109.2 16.84 18.14
010 4000 1048 0.79 5.52 114.0 17.64 18.95 0.65 4.53 112.2 17.34 18.64
011 2000 524 0.56 3.90 117.1 18.14 19.44 0.46 3.20 115.2 17.84 19.14
100 1000 262 0.39 2.76 120.1 18.64 19.94 0.32 2.26 118.3 18.34 19.65
101 500 131 0.28 1.95 123.1 19.14 20.44 0.23 1.61 121.2 18.83 20.14
110 250 65 0.20 1.38 126.1 19.64 20.95 0.16 1.13 124.3 19.34 20.65
111 n/a n/a — — — — — — — — — —
(1) At least 1000 consecutive readings were used to calculate the RMS and peak-to-peak noise values in this table.
Table 4. Input-Referred Noise (μV
RMS
/ μV
PP
) in Normal Mode
5-V Analog Supply and 4.5-V Reference
(1)
PGA
GAIN = 24
DR BITS OF OUTPUT NOISE-
CONFIG1 DATA RATE –3-dB FREE
REGISTER (SPS) BANDWIDTH (Hz) μV
RMS
μV
PP
SNR (dB) BITS ENOB
000 16000 4193 1.66 11.64 98.0 14.98 16.28
001 8000 2096 0.80 5.57 104.4 16.04 17.35
010 4000 1048 0.56 3.94 107.4 16.54 17.84
011 2000 524 0.40 2.79 110.4 17.04 18.35
100 1000 262 0.28 1.97 113.5 17.54 18.85
101 500 131 0.20 1.39 116.5 18.04 19.35
110 250 65 0.14 0.98 119.5 18.54 19.85
111 n/a n/a — — — — —
(1) At least 1000 consecutive readings were used to calculate the RMS and peak-to-peak noise values in this table.
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