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參數(shù)資料
| 型號(hào)： | LM75BGD |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Digital temperature sensor and thermal watchdog |
| 中文描述： | DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | 3 X 2 MM, 0.5 MM HEIGHT, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 11/29頁 |
| 文件大?。?/td> | 164K |
| 代理商： | LM75BGD |
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LM75B_2
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 9 December 2008
11 of 29
NXP Semiconductors
LM75B
Digital temperature sensor and thermal watchdog
7.7 OS fault queue
Fault queue is defined as the number of faults that must occur consecutively to activate
the OS output. It is provided to avoid false tripping due to noise. Because faults are
determined at the end of data conversions, fault queue is also defined as the number of
consecutive conversions returning a temperature trip. The value of fault queue is
selectable by programming the two bits B4 and B3 (OS_F_QUE[1:0]) in register Conf.
Notice that the programmed data and the fault queue value are not the same.
Table 13
shows the one-to-one relationship between them. At power-up, fault queue data = 0 and
fault queue value = 1.
7.8 Shutdown mode
The device operation mode is selected by programming bit B0 (SHUTDOWN) of register
Conf. Setting bit SHUTDOWN to logic 1 will put the device into shutdown mode. Resetting
bit SHUTDOWN to logic 0 will return the device to normal mode.
In shutdown mode, the device draws a small current of approximately 1.0
μ
A and the
power dissipation is minimized; the temperature conversion stops, but the I
2
C-bus
interface remains active and register write/read operation can be performed. When the
shutdown is set, the OS output will be unchanged in comparator mode and reset in
interrupt mode.
7.9 Power-up default and power-on reset
The LM75B always powers-up in its default state with:
Normal operation mode
OS comparator mode
T
th(ots)
= 80
°
C
T
hys
= 75
°
C
OS output active state is LOW
Pointer value is logic 00 (Temp)
When the power supply voltage is dropped below the device power-on reset level of
approximately 1.0 V (POR) for over 2
μ
s and then rises up again, the device will be reset
to its default condition as listed above.
Table 13.
Fault queue data
OS_F_QUE[1]
0
0
1
1
Fault queue table
Fault queue value
Decimal
1
2
4
6
OS_F_QUE[0]
0
1
0
1
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| LM75BGD,125 | 功能描述:板上安裝溫度傳感器 2.8-5.5V I2C-BUS INTERFACE RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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| LM75BIM-3 | 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(zhǔn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM75BIM-3/NOPB | 功能描述:板上安裝溫度傳感器 Digital Temp Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM75BIM-3+ | 功能描述:板上安裝溫度傳感器 2-Wire Digital Temp Snsr & Thrml Wtchdog RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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