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參數(shù)資料
| 型號： | LM82CIMQAX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
| 中文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 4Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | QSOP-16 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大?。?/td> | 341K |
| 代理商： | LM82CIMQAX |
LM82
Remote Diode and Local Digital Temperature Sensor
with Two-Wire Interface
General Description
The LM82 is a digital temperature sensor with a 2 wire serial
interface that senses the voltage and thus the temperature of
a remote diode using a Delta-Sigma analog-to-digital con-
verter with a digital over-temperature detector. The LM82 ac-
curately senses its own temperature as well as the tempera-
ture of external devices, such as Pentium II
Processors or
diode connected 2N3904s. The temperature of any ASIC
can be detected using the LM82 as long as a dedicated di-
ode (semiconductor junction) is available on the die. Using
the SMBus interface a host can access the LM82’s registers
at any time. Activation of a T_CRIT_A output occurs when
any temperature is greater than a programmable comparator
limit, T_CRIT. Activation of an INT output occurs when any
temperature is greater than its corresponding programmable
comparator HIGH limit.
The host can program as well as read back the state of the
T_CRIT register and the 2 T_HIGH registers. Three state
logic inputs allow two pins (ADD0, ADD1) to select up to 9
SMBus address locations for the LM82. The sensor powers
up with default thresholds of 127C for T_CRIT and all
T_HIGHs. The LM82 is pin for pin and register compatible
with the LM84, Maxim MAX1617 and Analog Devices
ADM1021.
Features
n
Accurately senses die temperature of remote ICs, or
diode junctions
n
On-board local temperature sensing
n
SMBus and I
2
C compatible interface, supports
SMBus 1.1 TIMEOUT
n
Two interrupt outputs: INT and T_CRIT_A
n
Register readback capability
n
7 bit plus sign temperature data format, 1 C resolution
n
2 address select pins allow connection of 9 LM82s on a
single bus
Key Specifications
j
Supply Voltage
j
Supply Current
j
Local Temp Accuracy (includes quantization error)
0C to +85C
j
Remote Diode Temp Accuracy (includes quantization
error)
+25C to +100C
0C to +125C
3.0V to 3.6V
0.8mA (max)
±
3.0C (max)
±
3C (max)
±
4C (max)
Applications
n
System Thermal Management
n
Computers
n
Electronic Test Equipment
n
Office Electronics
n
HVAC
Simplified Block Diagram
SMBus
is a trademark of the Intel Corporation.
is a registered trademark of the Intel Corporation.
Pentium II
is a registered trademark of the Philips Corporation.
DS101297-1
January 2000
L
2000 National Semiconductor Corporation
DS101297
www.national.com
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM82CIMQAX/NOPB | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM83 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Triple-Diode Input and Local Digital Temperature Sensor with Two-Wire Interface |
| LM8300 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Four Wire Resistive Touchscreen Controller with Brownout |
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| LM8300HMT9 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Four Wire Resistive Touchscreen Controller with Brownout |
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