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参数资料
| 型号： | AM512BVD |
| 厂商： | RENISHAW PLC |
| 元件分类： | 磁阻传感器 |
| 英文描述： | MAGNETIC FIELD SENSOR-HALL EFFECT, 1-4 V, SQUARE, SURFACE MOUNT |
| 封装： | ROHS COMPLIANT, LQFP-44 |
| 文件页数： | 2/22页 |
| 文件大小： | 608K |
| 代理商： | AM512BVD |
Data sheet
AM512BD01_04
Issue 4, 14
th January 2009
2009 RLS d.o.o.
A
associate company
10
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
0
64
128
192
256
320
384
448
512
Binary input
R
el
at
ive
acc
u
ra
cy
[
b
it]
Fig. 12: Typical Relative accuracy plot for DAC
Actual
0
511
Position code
Positive
gain error
Negative
gain error
VRefP
VRefN
Ideal
Actual
0
511
Position code
VRefP
VRefN
Fig. 13: Gain error for DAC
Fig. 14: Offset error for DAC
Transfer characteristic at ideal DAC with no errors:
Digital input value
Analogue output value
0
1/512*(VRefP - VRefN)
511
VRefP - 1/512*(VRefP - VRefN)
DAC reference inputs characteristic:
Parameter
Symbol
Min.
Typ.
Max.
Unit
Note
VRefP input impedance
RVrfP
15.6
k
VRefN input impedance
RVrfN
4.8
k
VRefP input range
Vss
Vdd - 100 mV
*
VRefN input range
Vss
Vdd/2
* The VRefP maximal value must be approx. 100 mV below Vdd to prevent a saturation of the output
because of the possible gain and offset error.
DAC voltage output characteristic:
Parameter
Symbol
Typ.
Unit
Note
Minimum output voltage
VOutMin
0
V
Maximum output voltage
VOutMax
Vdd - 23 mV
mV
*
Output impedance
ROut
28.2
* When the output is unloaded.
DAC characteristic:
Parameter
Min.
Typ.
Max.
Unit
Note
Resolution
9
bits
Gain
1
Relative accuracy
±0.6
±1
LSB
*
Gain error
-1
-0.3
1
%
Offset error
-1
3
10
mV
* 1/2 peak to peak value of relative accuracy plot.
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