LM84 具有双线接口的二极管输入数字温度传感器

The LM84 is a remote diode temperature sensor, Delta-Sigma analog-to-digital converter, and digital over-temperature detector with an SMBus™ interface. The LM84 senses its own temperature as well as the temperature of a target IC with a diode junction, such as a Pentium® II processor or a diode connected 2N3904. A diode junction (semiconductor junction) is required on the target IC's die. A host can query the LM84 at any time to read the temperature of this diode as well as the temperature state of the LM84 itself. A T_CRIT_A# interrupt output becomes active when the temperature is greater than a programmable comparator limit, T_CRIT.

The host can program as well as read back the state of the T_CRIT register

	LM84	LM95213	LM95214	LM95233	LM95234	LM95235
Temp Resolution (Max) (bits)	8	13	13	13	13	13
Supply Voltage (Min) (V)	3	3	3	3	3	3
Supply Voltage (Max) (V)	3.6	3.3	3.6	3.6	3.6	3.6
Iq (Typ) (uA)	1000	570	570	570	570	350
Interface	2-Wire Serial	2-Wire Serial	2-Wire Serial	2-Wire Serial	2-Wire Serial	2-Wire Serial
Sensor Type	Remote + Local	Remote + Local	Remote + Local	Remote + Local	Remote + Local	Remote + Local
Remote Channel	1	2	4	2	4	1
Remote Sensor Correction				Beta Compensation	Beta Compensation	Beta Compensation
Remote Sensor Accuracy (Max) (+/- C)	3	1.1	1.1	0.875	0.875	0.75
Local Sensor Accuracy (Max) (+/- C)	1	2	2	2	2	2
Fault Queue			Yes		Yes
Pin/Package	16SSOP	14SON, 14UQFN, 14VSON, 14WSON	14SON, 14UQFN, 14VSON, 14WSON	14SON, 14UQFN, 14VSON, 14WSON	14SON, 14UQFN, 14VSON, 14WSON	8VSSOP
Approx. Price (US$)	1.61 \| 1ku	0.91 \| 1ku	1.08 \| 1ku	1.00 \| 1ku	1.08 \| 1ku	0.78 \| 1ku
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog

LM84 特性

Directly senses die temperature of remote ICs
Senses temperature of remote diodes
SMBus compatible interface, supports SMBus Timeout
Register readback capability
7 bit plus sign temperature data format
2 address select lines enable 9 LM84s to be connected to a single bus

LM84 器件用途

System Thermal Management
Personal Computers
Electronic Test Equipment
Office Electronics
HVAC

LM84 工具和软件

培训内容	型号	软件/工具类型
用于硬件监控器和数字温度传感器的评估板软件	DIGITALTEMPSENSORSEVM-SW	应用软件

LM84 应用手册

标题	类型	大小
Application Note 1155 A Simple Software I2C Routine for the COP8	PDF	121
Multiple Remote Diode Temperature Sensing	PDF	369
Sensing and Monitoring for Control and Protection Seminar	PDF	245