数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

CS5461 数据表(PDF) 19 Page - Cirrus Logic

部件名 CS5461
功能描述  Single Phase Bi-Directional Power/Energy IC
PDF  45 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  CIRRUS [Cirrus Logic]
网页  http://www.cirrus.com
标志 CIRRUS - Cirrus Logic

CS5461 数据表(HTML) 19 Page - Cirrus Logic

Back Button CS5461 Datasheet HTML 15Page - Cirrus Logic CS5461 Datasheet HTML 16Page - Cirrus Logic CS5461 Datasheet HTML 17Page - Cirrus Logic CS5461 Datasheet HTML 18Page - Cirrus Logic CS5461 Datasheet HTML 19Page - Cirrus Logic CS5461 Datasheet HTML 20Page - Cirrus Logic CS5461 Datasheet HTML 21Page - Cirrus Logic CS5461 Datasheet HTML 22Page - Cirrus Logic CS5461 Datasheet HTML 23Page - Cirrus Logic Next Button
Zoom Inzoom in Zoom Outzoom out
 19 / 45 page
background image
CS5461
DS546F2
19
4.4.6.4 DC Gain Calibration Sequence
Based on the level of the positive DC calibration
voltage applied across the “+’ and “-” inputs, the
CS5461 determines the DC Gain Register value by
averaging the Instantaneous Register’s output sig-
nal values over one computation cycle (N samples)
and then dividing this average into 1. Therefore, af-
ter the DC gain calibration, the Instantaneous Reg-
ister will read at full-scale whenever the DC level
of the input signal is equal to the level of the DC
calibration signal applied to the inputs during the
DC gain calibration (see Figure 9).
4.4.7 Duration of Calibration Sequence
The value of the Cycle Count Register (N) deter-
mines the number of conversions performed by the
CS5461 during a given calibration sequence. For
DC offset/gain calibrations, the calibration se-
quence takes at least N + 30 conversion cycles to
complete. For AC offset/gain calibrations, the cali-
bration sequence takes at least 6N + 30 A/D con-
In
M odula to r
+
x
to V *, I*, P *, E * R e g is te rs
F ilte r
N
V RM S
N
Σ
÷
SIN C
D C O ffse t*
Ga in *
+
X
2
-X
1
x
N
AC O ffset*
X
2
0.6
x
+
+
-
+
2
*
÷
* Denotes readable/writable register
X
N
Figure 6. Calibration Data Flow
V
RMS Register =
230/
250 x
1/
√2 ≈ 0.65054
250 mV
230 mV
0 V
-230 mV
-250 mV
0.9999...
0.92
-0.92
-1.0000...
V
RMS Register = 0.6000...
250 mV
230 mV
0 V
-230 mV
-250 mV
0.84853
-0.84853
Before AC Gain Calibration (Vgain Register = 1)
After AC Gain Calibration (Vgain Register changed to ~0.9223)
Instantaneous Voltage
Register Values
Instantaneous Voltage
Register Values
Sinewave
Sinewave
0.92231
-0.92231
INPUT
SIGNAL
INPUT
SIGNAL
Figure 7. Example of AC Gain Calibration
V
RMS Register =
230/
250 = 0.92
250 mV
230 mV
0 V
-250 mV
0.9999...
0.92
-1.0000...
V
RMS Register = 0.6000...
250 mV
230 mV
0 V
-250 mV
0.6000
Before AC Gain Calibration (Vgain Register = 1)
After AC Gain Calibration (Vgain Register changed to ~0.65217)
Instantaneous Voltage
Register Values
Instantaneous Voltage
Register Values
DC Signal
DC Signal
0.65217
-0.65217
INPUT
SIGNAL
INPUT
SIGNAL
Figure 8. Another Example of AC Gain Calibration



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com