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參數(shù)資料
| 型號(hào)： | AS8501-ASOU |
| 廠商： | ams |
| 文件頁(yè)數(shù)： | 13/41頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DATA ACQ 16-SOIC |
| 特色產(chǎn)品： | AS8501 High Precision Data Acquisition Ics |
| 標(biāo)準(zhǔn)包裝： | 46 |
| 類型： | 數(shù)據(jù)采集系統(tǒng)（DAS） |
| 輸入類型： | 模擬，數(shù)字 |
| 輸出類型： | 模擬，數(shù)字 |
| 接口： | 串行 |
| 電流 - 電源： | 5mA |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁(yè)面： | 803 (CN2011-ZH PDF) |
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AS8501 - Data Sheet
austriamicrosystems
Revision 1.1, 04-April-06
www.austriamicrosystems.com
Page 19 of 40
subregister MM: chopping ratio bit, Registers CRA, CRB
Nr.
MM
mm
NOTE
0
4
0
1
8
1
2
1
x 1)
Notes:
1) For c=0 and d=0 , chopping and dechopping is switched off and every cycle is active regardless
of mm, i.e. the sampling frequenzy is higher by a factor of 4
subregister CRN: averaging bits ( 4 bits), registers CRA,CRB
Nr.
R2
n3
n2
n1
n0
NOTE
0
1
0
1
2
0
1
2
4
0
1
0
3
8
0
1
4
16
0
1
0
5
32
0
1
0
1
6
64
0
1
0
7
128
0
1
8
256
1
0
9
512
1
0
1
10
1024
1
0
1
0
11-14
Reserved for test
1
x
x 1)
15
raw mode
1
1 2)
Note:
1)
combinations from B to E are reserved for test
2)
this mode delivers the AD-values without calibration and averaging but multiplied by a factor which is dependent on the
setting of the oversampling ratio. It can be used for high resolution measurements of very low signals since it eliminates
the internal rounding error.
The ratio between raw result (Nr) and normal result (Nn) is given by: Nr/Nn = 2^(11+x)/CAL where x=6 for R=128 and x=3
for R=64. CAL is the calibration constant used.
7.5.4
CRB measurement channel B configuration register ( 17 bits )
Nr.
Bits
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
NOTE
0
CRB bit
names
cu2 cu1 cu0 M5
M4
M3
M2
M1
g1
g0
f
r
mm
n3
n2
n1
n0 1), 3)
1
Defaults
0
1
0
1
0
0 2)
2
subreg.
CRU
CRM
GN
OSF
OSR
MM
CRN
Notes:
1)
This register defines the measurement channel B configuration, the functions of the subregisters are the same as
described above for measurement channel A
2)
Default power-up state before any setting
3)
In this mode the chip cannot measure the current sensing input RSHH-RSHL, therefore M1=0 for all settings
ams
AG
Technical
content
still
valid
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