Typical rms noise (nv), cs5531/32/33/34, Typical noise-free resolution (bits), cs5532/34 – Cirrus Logic CS5534-AS User Manual
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CS5531/32/33/34-AS
DS289F5
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TYPICAL RMS NOISE (nV), CS5531/32/33/34
Notes: 11. Wideband noise aliased into the baseband. Referred to the input. Typical values shown for 25 °C.
12. For peak-to-peak noise multiply by 6.6 for all ranges and output rates.
13. Word rates and -3dB points with FRS = 0. When FRS = 1, word rates and -3dB points scale by 5/6.
TYPICAL NOISE-FREE RESOLUTION(BITS), CS5532/34
14. Noise-free resolution listed is for bipolar operation, and is calculated as LOG((Input Span)/(6.6xRMS
Noise))/LOG(2) rounded to the nearest bit. For unipolar operation, the input span is 1/2 as large, so one
bit is lost. The input span is calculated in the analog input span section of the data sheet. The noise-free
resolution table is computed with a value of 1.0 in the gain register. Values other than 1.0 will scale the
noise, and change the noise-free resolution accordingly.
15. “Noise-free resolution” is not the same as “effective resolution”. Effective resolution is based on the
RMS noise value, while noise-free resolution is based on a peak-to-peak noise value specified as 6.6
times the RMS noise value. Effective resolution is calculated as LOG((Input Span)/(RMS
Noise))/LOG(2).
Specifications are subject to change without notice.
Output Word
Rate (Sps)
-3 dB Filter
Frequency (Hz)
Instrumentation Amplifier Gain
x64
x32
x16
x8
x4
x2
x1
7.5
1.94
17
17
19
26
42
79
155
15
3.88
24
25
27
36
59
111
218
30
7.75
34
35
39
51
84
157
308
60
15.5
48
49
54
72
118
222
436
120
31
68
70
77
102
167
314
616
240
62
115
160
276
527
1040
2070
4150
480
122
163
230
392
748
1480
2950
5890
960
230
229
321
554
1060
2090
4170
8340
1,920
390
344
523
946
1840
3650
7290
14600
3,840
780
1390
2710
5390
10800
21500
43000
86100
Output Word
Rate (Sps)
-3 dB Filter
Frequency (Hz)
Instrumentation Amplifier Gain
x64
x32
x16
x8
x4
x2
x1
7.5
1.94
19
20
21
22
22
22
22
15
3.88
19
20
21
21
21
22
22
30
7.75
18
19
20
21
21
21
21
60
15.5
18
19
20
20
20
21
21
120
31
17
18
19
20
20
20
20
240
62
16
17
17
17
17
17
17
480
122
16
17
17
17
17
17
17
960
230
15
16
16
16
16
16
16
1,920
390
15
15
15
15
15
15
15
3,840
780
13
13
13
13
13
13
13