CS5521/22/23/24/28
8 DS317F8
TYPICAL RMS NOISE, CS5522/24/28 (Notes 14 and 15)
Notes: 14. Wideband noise aliased into the baseband. Referred to the input. Typical values shown for 25° C.
15. To estimate Peak-to-Peak Noise, multiply RMS noise by 6.6 for all ranges and output rates.
16. For input ranges <100 mV and output rates ≥60 Sps, 16.384 kHz chopping frequency is used.
TYPICAL NOISE FREE RESOLUTION (BITS), CS5522/24/28 (Note 17)
Notes: 17. For bipolar mode, the number of bits of Noise Free Resolution is LOG((2XInput Range)/(6.6xRMS
Noise))/LOG(2) rounded to the nearest bit. For unipolar mode, the number of bits of Noise Free
Resolution is LOG((Input Range)/(6.6xRMS Noise))/LOG(2) rounded to the nearest bit. Also, the
CS5522/24/28’s output conversions are 24 bits. Noise free Resolution numbers are based upon
VREF = 2.5 V and XIN = 32.768 kHz. The values will be affected directly by changes in VREF, but the
effects due to changes in the XIN frequency will be minor.
Output Rate
(Sps)
-3 dB Filter
Frequency
Input Range, (Bipolar/Unipolar Mode)
25 mV 55 mV 100 mV 1 V 2.5 V 5 V
1.88 1.64 90 nV 95 nV 140 nV 1.5 µV 3 µV 6 µV
3.76 3.27 110 nV 130 nV 190 nV 2 µV 4 µV 8 µV
7.51 6.55 170 nV 200 nV 275 nV 2.5 µV 6 µV 11.5 µV
15.0 12.7 250 nV 330 nV 580 nV 4.5 µV 10 µV 20 µV
30.0 25.4 500 nV 1 µV 1.5 µV 16 µV 45 µV 85 µV
61.6 (Note 16) 50.4 2 µV 4 µV 8 µV 72 µV 195 µV 350 µV
84.5 (Note 16) 70.7 10 µV 20 µV 35 µV 340 µV 900 µV 2 mV
101.1 (Note 16) 84.6 30 µV 60 µV 105 µV 1.1 mV 3 mV 5.3 mV
Output Rate
(Sps)
-3 dB Filter
Frequency
Input Range, (Bipolar Mode)
25 mV 55 mV 100 mV 1 V 2.5 V 5 V
1.88 1.64 16 17 18 18 18 18
3.76 3.27 16 17 17 17 18 18
7.51 6.55 15 16 17 17 17 17
15.0 12.7 15 16 16 16 16 16
30.0 25.4 14 14 14 14 14 14
61.6 (Note 16) 50.4 12 12 12 12 12 12
84.5 (Note 16) 70.7 10 10 10 10 10 10
101.1 (Note 16)84.6888888