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参数资料
| 型号： | AM512BVC |
| 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： | 19/22页 |
| 文件大小： | 608K |
| 代理商： | AM512BVC |
Data sheet
AM512BD01_04
Issue 4, 14
th January 2009
2009 RLS d.o.o.
A
associate company
6
Sinusoidal analogue output for monitoring
Agnd
is an internally generated reference voltage. It is used as a zero level for the analogue signals. When
pin 41 is open the Agnd voltage is 3/5 of Vdd. If pin 41 is connected to Vss the Agnd voltage is 1/2 of Vdd.
Pins 4 and 5 are unbuffered sinusoidal analogue outputs and they must only be used with a high impedance
load. They are used for filtering and they can be used for monitoring the signals.
Unbuffered sinusoidal outputs:
Parameter
Symbol
Typ.
Unit
Note
Internal serial impedance
Rn
10
k
Short Circuit current
I0
150
A
When signal level is 1.5 V and connected to Agnd
Timing diagram:
Figure 4 shows the timing diagram for CW
rotation of the recommended magnet.
Sinusoidal outputs produce one period of
sine and cosine signal per turn with a
phase difference of 90°. Each signal has
the same amplitude and minimum offset
with respect to Agnd.
Sinusoidal output parameters are factory
optimized to achieve the best possible
accuracy. However the specified accuracy
parameters are only valid for magnets
specified and used within alignment
tolerances. When a load is applied to the
analogue outputs the amplitude is slightly
reduced. The load must be connected
between signal pins and Agnd. The load
must be the same for both channels to
preserve the symmetry.
Fig. 4: Timing diagram for analogue output
Sinusoidal signal parameters:
*
Amplitude = 1/2 of peak to peak value, assuming power supply voltage and magnet position are within tolerance.
** Parameters are only valid for ideal shape and position of the magnet. Additional errors can occur if magnet setup
position is not achieved. See the “Mounting instructions” section on page 14 for additional information.
Parameter
Symbol
Min.
Typ.
Max.
Unit
Note
Amplitude
A
0.6
1.2
1.9
V
*
Amplitude difference
ΔASC
0.2
%
**
Offset Sine
VOSIN
3
mV
**
Offset Cosine
VOCOS
3
mV
**
Phase error
Δφ
0.2
deg
**
Max. output frequency
fMax
500
Hz
Cosine
Sine
Agnd
A
0°
360°
180°
Sinusoidal
outputs
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