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EM357-RTR データシート(PDF) 181 Page - Silicon Laboratories

部品番号 EM357-RTR
部品情報  High-Performance, Integrated ZigBee/802.15.4 System-on-Chip
PDF  241 Pages
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メーカー  SILABS [Silicon Laboratories]
ホームページ  http://www.silabs.com
Logo SILABS - Silicon Laboratories

EM357-RTR データシート(HTML) 181 Page - Silicon Laboratories

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181
Rev 1.3
Table 10.8 describes the key ADC parameters measured on Silicon Labs’ EM357 reference design at 25 °C and
VDD_PADS at 3.0 V, for a sampling clock of 6 MHz. The single-ended measurements were done at finput = 7.7%
fNyquist; level = 1.2 V p-p swing centered on 1.5 V. The differential measurements were done at finput = 7.7%
fNyquist, level = 1.2 V p-p swing and a common mode voltage of 1.5 V.
Table 10.8. ADC Module Key Parameters for Input Buffer Enabled and 6 MHz Sampling
Parameter
Performance
ADC_PERIOD
0
1
2
3
4
5
6
7
Conversion Time (µs)
32
64
128
256
512
1024
2048
4096
Nyquist Freq (kHz)
93.8k
46.9k
23.4k
11.7k
5.86k
2.93k
1.47k
732
3 dB Cut-off (kHz)
56.6k
28.3k
14.1k
7.07k
3.54k
1.77k
884
442
INL (codes peak)1
0.055
0.032
0.038
0.07
0.123
0.261
0.522
1.028
INL (codes RMS)1
0.028
0.017
0.02
0.04
0.077
0.167
0.326
0.65
DNL (codes peak)1
0.028
0.017
0.02
0.04
0.077
0.167
0.326
0.65
DNL (codes RMS)1
0.01
0.006
0.006
0.007
0.008
0.013
0.023
0.038
ENOB
(from single-cycle test)
3.6
5.0
6.6
8.1
9.5
10.7
11.3
11.6
SNR (dB)
Single-Ended
Differential2
23
23
32
32
41
41
50
50
59
59
65
66
67
69
68
71
SINAD (dB)
Single-Ended
Differential2
23
23
32
32
41
41
50
50
58
59
64
66
66
69
66
71
SDFR (dB)
Single-Ended
Differential
48
48
56
57
65
65
72
74
72
82
72
88
73
88
73
88
THD (dB)
Single-Ended
Differential
–33
–33
–42
–42
–51
–51
–59
–60
–66
–69
–68
–76
–68
–80
–68
–82
ENOB (from SNR)2
Single-Ended
Differential
3.6
3.6
5.1
5.1
6.6
6.6
8.1
8.1
9.5
9.5
10.5
10.7
10.9
11.3
11
11.5
ENOB (from SINAD)2
Single-Ended
Differential
3.6
3.6
5.0
5.1
6.5
6.6
8.0
8.0
9.4
9.5
10.3
10.6
10.7
11.3
10.7
11.4
Equivalent ADC Bits1
7
[15:9]
8
[15:8]
9
[15:7]
10
[15:6]
11
[15:5]
12
[15:4]
13
[15:3]
14
[15:2]
Notes:
1.
INL and DNL are referenced to a LSB of the Equivalent ADC Bits shown in the last row of this table.
2.
ENOB (effective number of bits) can be calculated from either SNR (signal to non-harmonic noise ratio) or SINAD
(signal-to-noise and distortion ratio).



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