产品概述 返回TOPrgS嘉泰姆

General Description The CXHA3182 is a precise digital thermometer that reports the temperature of both a remote sensor and its own package. The remote sensor is a diode-connected transistor typically a low-cost, easily mounted 2N3904 NPN type that replace conventional thermistors or thermocouples. Remote accuracy is ±1°C with no calibration needed. It also has a build-in noise filtering function in remote sensor measuring the diode temperature. The remote channel can also measure the die temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor. The 2-wire serial interface accepts standard System Management Bus (SMBus) Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read temperature data. The data format is 11bits plus sign, with each bit corresponding to 0.125°C, in two’s-complement format. Measurements can be done automatically and autonomously, with the conversion rate programmed by the user or programmed to operate in a single-shot mode. The adjustable rate allows the user to control the supply current drain. The CXHA3182 and CXHA3182-1 have the same functions but different SMBus slave addresses. This allows for one of each to be on the bus at the same time. The CXHA3182 is available in a small, 8-pin SOP, MSOP and TDFN surface-mount package.

   产品特点 返回TOPrgS嘉泰姆

„ Two Channels: Measures Both Remote and Local Temperatures rgS嘉泰姆

„ No Calibration Required rgS嘉泰姆

„ Built-in Noise-Buster for Remote Sensor rgS嘉泰姆

„ SMBus 2-Wire Serial Interface rgS嘉泰姆

„ Programmable Under/Overtemperature Alarms rgS嘉泰姆

„ Supports SMBus Alert Response rgS嘉泰姆

„ Accuracy: ±1°C (+60°C to +100°C, remote) ±3°C (+60°C to + 100°C, local) „ 320μA (typ) Average Supply Current During Conversion rgS嘉泰姆

„ +3V to +5.5V Supply Range rgS嘉泰姆

„ Small 8-Lead SOP , MSOP and TDFN Package rgS嘉泰姆

„ Remote Temperature Measurment up to 160°C by using offset shifting method (see “Measure Remote Temperature Higher Than 127°C” section) rgS嘉泰姆

 „ SMBus Inputs with Built-in MOS Switch to Prevent Reverse Current from Bus to IC VCCrgS嘉泰姆

   应用范围 返回TOPrgS嘉泰姆

Desktop and Notebook rgS嘉泰姆

Central Office rgS嘉泰姆

Computers rgS嘉泰姆

Telecom Equipment rgS嘉泰姆

Smart Battery Packs rgS嘉泰姆

Test and Measurement rgS嘉泰姆

LAN Servers rgS嘉泰姆

Multi-Chip Modules rgS嘉泰姆

Industrial ControllersrgS嘉泰姆

   技术规格书（产品PDF) 返回TOP rgS嘉泰姆

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