TMP461 器件是一款高精度、低功耗远程温度传感器监控器,内置有一个本地温度传感器。这类远程温度传感器通常采用低成本分立式 NPN 或 PNP 晶体管,或者基板热晶体管或二极管,这些器件都是微处理器、微控制器或现场可编程门阵列 (FPGA) 的组成部件。本地和远程传感器均用 12 位数字编码表示温度,分辨率为 0.0625°C。此两线制串口接受 SMBus 通信协议,以及多达 9 个不同的引脚可编程地址。
该 器件 将诸如串联电阻抵消、可编程非理想性因子(η 因子)、可编程偏移、可编程温度限制和可编程数字滤波器等高级特性完美结合,提供了一套准确度和抗扰度更高且稳健耐用的温度监控解决方案。
TMP461 非常适合各类通信、计算、仪器仪表和工业应用中的多位置、高精度 温度测量。该器件的额定电源电压范围为 1.7V 至 3.6V,额定工作温度范围为 -40°C 至 125°C。
器件型号 | 封装 | 封装尺寸(标称值) |
---|---|---|
TMP461 | WQFN (10) | 2.00mm x 2.00mm |
Changes from A Revision (July 2015) to B Revision
Changes from * Revision (June 2015) to A Revision
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
A0 | 5 | Digital input | Address select. Connect to GND, V+, or leave floating. |
A1 | 10 | Digital input | Address select. Connect to GND, V+, or leave floating. |
ALERT/THERM2 | 7 | Digital output | Interrupt or SMBus alert output. Can be configured as a second THERM output. Open-drain; requires a pullup resistor to a voltage between 1.7 V and 3.6 V. |
D– | 3 | Analog input | Negative connection to remote temperature sensor |
D+ | 2 | Analog input | Positive connection to remote temperature sensor |
GND | 6 | Ground | Supply ground connection |
SCL | 9 | Digital input | Serial clock line for SMBus. Input; requires a pullup resistor to a voltage between 1.7 V and 3.6 V if driven by an open-drain output. |
SDA | 8 | Bidirectional digital input-output | Serial data line for SMBus. Open-drain; requires a pullup resistor to a voltage between 1.7 V and 3.6 V. |
THERM | 4 | Digital output | Thermal shutdown or fan-control pin. Open-drain; requires a pullup resistor to a voltage between 1.7 V and 3.6 V. |
V+ | 1 | Power supply | Positive supply voltage, 1.7 V to 3.6 V |