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| 型号： | TMP401AIDGKRG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 21/28页 |
| 文件大小： | 881K |
| 描述： | IC TEMP SENSOR DGTL OUT 8-MSOP |
| 标准包装： | 2,500 |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部和外部 |
| 感应温度： | -40°C ~ 125°C |
| 精确度： | ±3°C 本地（最大），±5°C 远程（最大） |
| 拓扑： | ADC，比较器，寄存器库 |
| 输出类型： | 2 线 SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 带卷 (TR) |
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TMP401
SBOS371A AUGUST 2006 REVISED OCTOBER 2007
www.ti.com
21
LAYOUT CONSIDERATIONS
Remote temperature sensing on the TMP401 measures
very small voltages using very small currents; therefore,
noise at the IC inputs must be minimized. Most
applications using the TMP401 will have high digital
content, with several clocks and logic level transitions
creating a noisy environment. Layout should adhere to the
following guidelines:
1. Place the TMP401 as close to the remote junction
sensor as possible.
2. Route the D+ and D traces next to each other and
shield them from adjacent signals through the use
of ground guard traces, as shown in Figure 18. If a
multilayer PCB is used, bury these traces between
ground or V
DD
planes to shield them from extrinsic
noise sources. 5 mil PCB traces are recommended.
3. Minimize additional thermocouple junctions caused
by copper-to-solder connections. If these junctions
are used, make the same number and approximate
locations of copper-to-solder connections in both
the D+ and D connections to cancel any
thermocouple effects.
4. Use a 0.1礔 local bypass capacitor directly
between the V+ and GND of the TMP401, as shown
in Figure 19. Minimize filter capacitance between
D+ and D to 1000pF or less for optimum
measurement performance. This capacitance
includes any cable capacitance between the
remote temperature sensor and TMP401.
5. If the connection between the remote temperature
sensor and the TMP401 is between 8 inches and 12
feet, use a twisted-wire pair connection. Beyond
this distance (up to 100ft), use a twisted, shielded
pair with the shield grounded as close to the
TMP401 as possible. Leave the remote sensor
connection end of the shield wire open to avoid
ground loops and 60Hz pickup.
GND
(1)
D+
(1)
D
(1)
GND
(1)
NOTE: (1) 5 mil traces with 5 mil spacing.
Ground or V+ layer
on bottom and/or
top, if possible.
Figure 18. Example Signal Traces
1
2
3
4
8
7
6
5
TMP401
0.1礔 Capacitor
PCB Via
PCB Via
V+
GND
Figure 19. Suggested Bypass Capacitor
Placement
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TMP401AIDGKT | 功能描述:板上安装温度传感器 +/-2 Deg Prog Remote Local Temp Sensor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| TMP401AIDGKTG4 | 功能描述:板上安装温度传感器 +/-2 Deg Prog Remote Local Temp Sensor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| TMP411 | 制造商:BB 制造商全称:BB 功能描述:【1C Remote and Local TEMPERATURE SENSOR with N-Factor and Series Resistance Correction |
| TMP411_07 | 制造商:BB 制造商全称:BB 功能描述:【1∑C Remote and Local TEMPERATURE SENSOR with N-Factor and Series Resistance Correction |
| TMP411_13 | 制造商:TI 制造商全称:Texas Instruments 功能描述:?±1?°C Remote and Local TEMPERATURE SENSOR with N-Factor and Series Resistance Correction |
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