The TMP421, TMP422, and TMP423 are remote temperature sensor monitors with a built-in local temperature sensor. The remote temperature sensor diode-connected transistors are typically low-cost, NPN- or PNP-type transistors or diodes that are an integral part of microcontrollers, microprocessors, or FPGAs.

Remote accuracy is ±1°C for multiple IC manufacturers, with no calibration needed. The two-wire serial interface accepts SMBus write byte, read byte, send byte, and receive byte commands to configure the device.

The TMP421, TMP422, and TMP423 include series resistance cancellation, programmable non-ideality factor, wide remote temperature measurement range (up to +150°C), and diode fault detection.

The TMP421, TMP422, and TMP423 are all available in a SOT23-8 package. The TMP421C is also available in a DSBGA (WCSP) package.

• SOT23-8 and DSBGA (WCSP) PACKAGES
• ±1°C REMOTE DIODE SENSOR (MAX)
• ±1.5°C LOCAL TEMPERATURE SENSOR (MAX)
• SERIES RESISTANCE CANCELLATION
• n-FACTOR CORRECTION
• TWO-WIRE/SMBus? SERIAL INTERFACE
• MULTIPLE INTERFACE ADDRESSES
• DIODE FAULT DETECTION
• RoHS COMPLIANT AND NO Sb/Br

• Local sensor accuracy (Max) (+/- C)
• 2.5
• Type
• Remote
• Operating temperature range (C)
• -40 to 125
• Supply voltage (Min) (V)
• 2.7
• Interface type
• I2C, SMBus
• Supply voltage (Max) (V)
• 5.5
• Supply current (Max) (uA)
• 38
• Temp resolution (Max) (bits)
• 12
• Features
• One-shot conversion
• Remote channels (#)
• 2
• Addresses
• 4
• Rating
• Catalog

TMP422的完整型号有：TMP422AIDCNR、TMP422AIDCNT，以下是这些产品的关键参数及官网采购报价：

TMP422AIDCNR，工作温度：-40 to 125，封装：SOT-23 (DCN)-8，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TMP422AIDCNR的批量USD价格：.658（1000+）

TMP422AIDCNT，工作温度：-40 to 125，封装：SOT-23 (DCN)-8，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TMP422AIDCNT的批量USD价格：.79（1000+）

ONET1130EC-EVM — 具备双 CDR 与集成式调制器驱动器评估模块的 11.7Gbps 收发器

The ONET1130EC is a 2.5-V integrated modulator driver and limiting amplifier with transmit and receive clock and data recovery (CDR) designed to operate between 9.80 Gbps and 11.7 Gbps without the need for a reference clock. The ONET1130EC-EVMis a printed-circuit board (PCB) created to help (...)

TMP421SW-LINUX — 用于 TMP421 的 Linux 驱动程序

Linux 驱动程序支持 TMP421 系列远程和本地温度传感器。Linux 驱动程序支持通过 I2C 总线和接口与硬件监测子系统进行通信。
Linux 主线状态

在 Linux 主线中提供：是
可通过 git.ti.com 获取：不适用

支持的器件：

• tmp421
• tmp422
• tmp423
• tmp441
• tmp442

Linux 源文件

与该器件关联的文件为：

drivers/hwmon/tmp421.c

Documentation/hwmon/tmp421

源文件

drivers/hwmon/tmp421.c

其他文件

Documentation/hwmon/tmp421

启用驱动程序支持 使用“make (...)