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參數(shù)資料
| 型號(hào)： | DS1775R7+T&R |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 2/14頁 |
| 文件大?。?/td> | 394K |
| 描述： | IC THERMOM/STAT DIG 111 SOT-23-5 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 功能： | 溫度計(jì)，恒溫計(jì) |
| 傳感器類型： | 內(nèi)部 |
| 感應(yīng)溫度： | -55°C ~ 125°C |
| 精確度： | ±3°C（最小值） |
| 拓?fù)洌?/td> | ADC，比較器，寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報(bào)： | 是 |
| 輸出風(fēng)扇： | 無 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SC-74A，SOT-753 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-5 |
| 包裝： | 帶卷 (TR) |
DS1775
2 of 14
Table 1. Detailed Pin Description
PIN
NAME
FUNCTION
1
SCL
Clock Input/Output for 2-Wire Serial Communication Port. This input should
be tied to GND for stand-alone thermostat o eration.
2
GND
Ground
3
O.S.
Thermostat Output. Open-drain output becomes active when temperature
exceeds T
OS
. Device configuration defines means to clear overtemperature
state.
4
V
DD
Su l Volta e 2.7V to 5.5V In ut Power Pin
5
SDA
Data Input/Output for 2-Wire Serial Communication Port. In the stand-alone
thermostat mode this in ut selects h steresis.
DETAILED DESCRIPTION
Figure 1 shows a block diagram of the DS1775. The DS1775 consists of five major components:
1. Precision temperature sensor
2. Analog-to-digital converter
3. 2-wire interface electronics
4. Data registers
5. Thermostat comparator
The factory-calibrated temperature sensor requires no external components. Upon power-up, the DS1775
begins temperature conversions with the default resolution of 9 bits (0.5癈 resolution). The host can
periodically read the value in the temperature register, which contains the last completed conversion. As
conversions are performed in the background, reading the temperature register does not affect the
conversion in progress.
In power-sensitive applications, the user can put the DS1775 into a shutdown mode, under which the
sensor complete and store the conversion in progress and revert to a low-power standby state. In
applications where small incremental temperature changes are critical, the user can change the conversion
resolution from 9 bits to 10, 11, or 12. Each additional bit of resolution approximately doubles the
conversion time. This is accomplished by programming the configuration register. The configuration
register defines the conversion state, thermometer resolution/conversion time, active state of the
thermostat output, number of consecutive faults to trigger an alarm condition, and the method to
terminate an alarm condition.
The user can also program overtemperature (T
OS
) and undertemperature (T
HYST
) setpoints for thermostatic
operation. The power-up state of T
OS
is +80癈 and that for T
HYST
is +75癈. The result of each
temperature conversion is compared with the T
OS
and T
HYST
setpoints. The DS1775 offers two modes for
temperature control, the comparator mode and the interrupt mode. This allows the user the flexibility to
customize the condition that would generate and clear a fault condition. Regardless of the mode chosen,
the O.S. output becomes active only after the measured temperature exceeds the respective trip-point a
consecutive number of times; the number of consecutive conversions beyond the limit to generate an O.S.
is programmable. The power-up state of the DS1775 is in the comparator mode with a single fault
generating an active O.S.
Digital data is written to/read from the DS1775 via a 2-wire interface, and all communication is MSb
first.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1775R7-U | 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 |
| DS1775R-U | 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 |
| DS1776 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PI-Bus Transceiver |
| DS1776E/883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PI-Bus Transceiver |
| DS1776J/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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