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| 型号： | NSE-5310-ASSU |
| 厂商： | ams |
| 文件页数： | 12/22页 |
| 文件大小： | 0K |
| 描述： | IC ENCODER LINEAR 20-TSSOP |
| 产品培训模块： | Miniature Motion Control Overview |
| 标准包装： | 74 |
| 传感范围： | 10mT ~ 40mT |
| 类型： | 线性，旋转编码器 - 可编程 |
| 电源电压： | 3 V ~ 3.6 V，4.5 V ~ 5.5 V |
| 电流 - 电源： | 21mA |
| 电流 - 输出（最大）： | 4mA |
| 输出类型： | 数字式，开漏极 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 管件 |
| 其它名称： | 179910023 |
NSE-5310
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
8.2 Automatic Gain Control (AGC)
As the magnetic input field varies non-linearly with the air gap between sensor and magnet, the gain is controlled to an optimum input signal for
the SD ADC. The magnitude output is compared to a target register value. The most significant eight bits are used. If the actual magnitude differs
from the target value, an UP/DOWN signal for the AGC counter signal is generated.
For air gap detection functionality, two magnitude-change outputs are derived from the AGC counter UP/DOWN signals while the loop is
controlling the amplitude back to the target amplitude. Magnitude Increasing (MagINCn) and Magnitude Decreasing (MagDECn) signals indicate
air gap (SIN/COS amplitude) changes. Both signals are high for saturation of the AGC counter (running into upper / lower limit) and produce a
Non-Valid-Range alarm. The output pins can be connected together in wired-OR configuration to produce a single NVRn bit. For faster power-up
and response time, a successive approximation algorithm is implemented.
8.3 Temperature Sensor
The Temperature Sensor provides the junction temperature information over the serial interface.
Table 10. Temperature Sensor Characteristics
Parameter
Absolute Error Trimmed
Conversion Rate
Temperature Range
Readout Range
Conditions
See I2C User Interface on page 12
For continuous readout
(1303 clock cycles between conversion)
Specified temperature range
Design limit for temperature range
Min
-30
-50
Typ
Max
±10
767
70
80
Units
oC
sample/s
oC
oC
Resolution
Clock Frequency
Temp [oC] = output code [LSB] x 0.667 [oC/LSB] -
75[oC]
System clock (4 MHz) divided by 4
8
0.667
1
bit
oC/LSB
MHz
8.4 I2C User Interface
The device is accessible via an I2C two-wire serial interface. The default address is A<6:0>1000000. A<5:1> can be defined by the OTP I2C
Address. A0 can be selected by pulling up pin 11 (default internal pull down). CSn (default internal pull up) must be low during I2C data
transmission.
Figure 9. I2C Read Out by an μC-Master
Type Identifier
Address
Read
SDA
1
A5 A4
A3
A2 A1 A0p R/
D11 D10 D9 D8 D7 D6 D5 D4
D3 D2 D1 D0
Offset cordic
Comp Over
Finish Flow
Lin
Alarm
Mag
Incr
Decr
AGC7
SCL
S
1
9
ACK
Address
by Slave
1
Data Byte 1
9
ACK
Master
1
Data Byte 2
9
ACK
Master
1
Data
Byte 3
D11 - D0: Linear position
Offset Compensation Finished: “high” indicates a data valid.
CORDIC OverFlow: “high” indicates a DSP calculation overflow.
Linearity Alarm: “high” indicates the ADC input range exceeds ±625mV (=Filter OverFlow)
MagIncr / MagDecr “high” OR connection indicates changing magnitude and non-valid input range (see also pin 2 and 3)
In addition to the position data, magnitude and temperature sensor information can be read out as described in Automatic Gain Control (AGC) on
page 12 and Temperature Sensor on page 12 .
www.ams.com
Revision 1.5
12 - 22
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