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参数资料
| 型号： | CS4122XDWFR24 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 外设及接口 |
| 英文描述： | Triple Air-Core Gauge Driver with Serial Input Bus |
| 中文描述： | 0.07 A BUF OR INV BASED PRPHL DRVR, PDSO24 |
| 封装： | SOIC-24 |
| 文件页数： | 5/10页 |
| 文件大小： | 86K |
| 代理商： | CS4122XDWFR24 |
CS4122
http://onsemi.com
5
APPLICATIONS INFORMATION
THEORY OF OPERATION
The CS4122 is for interfacing between a microcontroller
or microprocessor and aircore meters commonly used in
automotive vehicles for speedometers, tachometers and
auxiliary gauges. These meters are built using 2 coils placed
at 90
°
orientation to each other. A magnetized disc floats in
the middle of the coils and responds to the magnetic field
generated by each coil. The disc has a shaft attached to it that
protrudes out of the assembly. A pointer indicator is attached
to this shaft and in conjunction with a separate printed scale
displays the vehicle’s speed, engine’s speed or other
information such as fuel quantity or battery voltage.
The disc (and pointer) respond to the vector sum of the
voltages applied to the coils. Ideally, this relationship
follows a sine/cosine equation. Since this is a transcendental
and nonlinear function, devices of this type use an
approximation for this relationship. The CS4122 uses a
tangential algorithm as shown in Figure 2 for the major
(360
°
) gauge. Only one output varies in any 45
°
range.
Note: The actual slopes are segmented but are shown here
as straight lines for simplicity.
SIN+
Output
Max(128)
SIN
Output
COS+
Output
COS
Output
Max(128)
Max(128)
Max(128)
Min(0)
Min(0)
Min(0)
Min(0)
0
°
45
°
90
°
135
°
180
°
225
°
270
°
315
°
360
°
000
001
010
MUX bits (D9D7)
011
100
101
110
111
000
Degrees of Rotation
Figure 2. Major Gauge Outputs
Quadrant I
Tan1
(VSIN )
(VCOS )
(VSIN )
(VCOS )
For
0.176
°
to 44.824
°
:
Tan
VCOS
0.748
VSIN
0.748
VBB
VBB
For
45.176
°
to 89.824
°
:
0.748
VCOS
Tan(90
°
VSIN
VBB
)
0.748
VBB
Quadrant II
180
°
Tan1
(VSIN )
(VCOS )
(VSIN )
(VCOS )
For
90.176
°
to 134.824
°
:
0.748
VCOS
Tan (
VSIN
VBB
90
°
)
0.748
VBB
For
135.176
°
to 179.824
°
:
Tan(180
°
VSIN
VCOS
)
0.748
VBB
0.748
VBB
Quadrant III
180
°
Tan1
(VSIN )
(VCOS )
(VSIN )
(VCOS )
For
180.176
°
to 224.824
°
:
Tan (
VSIN
VCOS
180
°
)
0.748
VBB
0.748
VBB
For
225.176
°
to 269.824
°
:
0.748
VCOS
Tan (270
°
VSIN
VBB
)
0.748
VBB
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS4122XDWFR24G | 功能描述:马达/运动/点火控制器和驱动器 Air Core Gauge DRVR w/Serial Bus Input RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| CS4124 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:High Side PWM FET Controller |
| CS4124/D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:High Side PWM FET Controller |
| CS-4124N16 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DC Motor Controller/Driver |
| CS4124YN16 | 功能描述:IC REG CTRLR BST PWM 16-DIP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
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