EM34X-VREVK Datasheet, PDF (178/237 Pages) Silicon Laboratories – High-Performance, Integrated RF4CE System-on-Chip

EM341
Table 10.7 describes the key ADC parameters measured on Silicon Labs’ EM341 reference design at 25 °C and
VDD_PADS at 3.0 V, for a sampling rate of 6 MHz. The single-ended measurements were done at f_input = 7.7%
f_Nyquist, 0 dBFS level (where full-scale is a 1.2 V p-p swing). The differential measurements were done at
f_input = 7.7% f_Nyquist; –6 dBFS level (where full-scale is a 2.4 V p-p swing) and a common mode voltage of 0.6 V.
Table 10.7. ADC Module Key Parameters for 6 MHz Sampling
Parameter
ADC_PERIOD
Conversion Time (µs)
Nyquist Freq (kHz)
3 dB Cut-off (kHz)
INL (codes peak)¹
INL (codes RMS)¹
DNL (codes peak)¹
DNL (codes RMS)¹
ENOB
(from single-cycle test)
SNR (dB)²
Single-Ended
Differential
SINAD (dB)²
Single-Ended
Differential
SDFR (dB)
Single-Ended
Differential
THD (dB)
Single-Ended
Differential
ENOB (from SNR)²
Single-Ended
Differential
ENOB (from SINAD)²
Single-Ended
Differential
Equivalent ADC Bits¹
0
5.33
93.8k
56.6k
0.084
0.046
0.026
0.007
5.6
1
10.7
46.9k
28.3k
0.084
0.044
0.023
0.009
7.0
2
21.3
23.4k
14.1k
0.15
0.076
0.044
0.013
8.5
Performance
3
4
42.7 85.3
11.7k 5.86k
7.07k 3.54k
0.274 0.518
0.147 0.292
0.052 0.096
0.015 0.024
10.0 11.4
5
171
2.93k
1.77k
1.057
0.58
0.119
0.03
12.6
6
341
1.47k
884
2.106
1.14
0.196
0.05
13.1
7
683
732
442
4.174
2.352
0.371
0.082
13.2
35
44
53
62
70
75
76
77
35
44
53
62
71
77
79
80
35
44
53
62
68
71
71
71
35
44
53
62
70
75
77
77
60
68
75
75
75
75
75
75
60
69
77
80
80
80
80
80
–45
–54
–63
–68
–70
–70
–70
–70
–45
–54
–63
–71
–76
–77
–78
–78
5.6
7.1
8.6
10.0 11.4 12.1 12.4 12.5
5.6
7.1
8.6
10.1 11.5 12.5 12.9 13.0
5.5
5.6
7
[15:9]
7.0
7.1
8
[15:8]
8.5
8.6
9
[15:7]
9.9
10.1
10
[15:6]
11.0
11.4
11
[15:5]
11.4
12.4
12
[15:4]
11.5
12.8
13
[15:3]
11.5
13.0
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).
Rev 1.0
179