CS5521/22/23/24/28
DS317F8
7
TYPICAL RMS NOISE, CS5521/23 (Notes 10 and 11)
Notes: 10. Wideband noise aliased into the baseband. Referred to the input. Typical values shown for 25° C.
11. To estimate Peak-to-Peak Noise, multiply RMS noise by 6.6 for all ranges and output rates.
12. For input ranges <100 mV and output rates
≥60 Sps, 16.384 kHz chopping frequency is used.
TYPICAL NOISE FREE RESOLUTION (BITS), CS5521/23 (Note 13)
Notes: 13. 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
CS5521/23’s output conversions are 16 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
148 nV
220 nV
1.8 V
3.9 V
7.8 V
3.76
3.27
122 nV
182 nV
310 nV
2.6 V
5.7 V
11.3 V
7.51
6.55
180 nV
267 nV
435 nV
3.7 V
8.5 V
18.1 V
15.0
12.7
280 nV
440 nV
810 nV
5.7 V
14 V
28 V
30.0
25.4
580 nV
1.1 V
2.1 V
18.2 V
48 V
96 V
61.6 (Note 12)
50.4
2.6 V
4.9 V
8.5 V
92 V
238 V
390 V
84.5 (Note 12)
70.7
11 V
27 V
43 V
458 V
1.1 mV
2.4 mV
101.1 (Note 12)
84.6
41 V
72 V
130 V
1.2 mV
3.4 mV
6.7 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
3.76
3.27
16
7.51
6.55
15
16
15.0
12.7
15
16
30.0
25.4
14
61.6 (Note 12)
50.4
12
84.5 (Note 12)
70.7
99
9999
101.1 (Note 12)
84.6
8
8888
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