The STTS751 is a digital temperature sensor which communicates over a 2-wire SMBus 2.0 compatible bus. The temperature is measured with a user-configurable resolution between 9 and 12 bits. At 9 bits, the smallest step size is 0.5 °C, and at 12 bits, it is 0.0625 °C. At the default resolution (10 bits, 0.25 °C/LSB), the conversion time is nominally 21 milliseconds.

The open-drain EVENToutput is used to indicate an alarm condition in which the measured temperature has exceeded the user-programmed high limit or fallen below the low limit. When the EVENTpin is asserted, the host can respond using the SMBus Alert Response Address (ARA) protocol to which the STTS751 will respond by sending its slave address.

The STTS751 is a 6-pin device that supports user-configurable slave addresses. Via the pull-up resistor on the Addr/Thermpin, one of four different slave addresses can be specified. Two order numbers (STTS751-0 and STTS751-1) provide two different sets of slave addresses bringing the total available to eight. Thus, up to eight devices can share the same 2-wire SMBus without ambiguity, thereby allowing monitoring of multiple temperature zones in an application.

The two-wire interface can support transfer rates up to 400 kHz. Two small footprint packages are available: a UDFN-6L and a standard SOT23-6L package.

stts751是數(shù)字溫度傳感器連通在一個(gè)2線SMBus兼容2總線。溫度測(cè)量與用戶可配置的分辨率為9和12位。在9位，最小步長(zhǎng)為0.5°C，并在12位，這是0.0625°在默認(rèn)的分辨率（10位、0.25°C / LSB），轉(zhuǎn)換時(shí)間名義上是21毫秒。

開(kāi)漏eventoutput用于指示報(bào)警狀態(tài)，測(cè)量的溫度超過(guò)上限或低于設(shè)定的低限的用戶。當(dāng)eventpin斷言，主機(jī)可以使用SMBus報(bào)警響應(yīng)地址（ARA）協(xié)議的stts751就會(huì)從地址發(fā)送。

stts751是支持用戶可配置的從機(jī)地址6針裝置。通過(guò)對(duì)地址/ thermpin上拉電阻，四個(gè)不同的從機(jī)地址可以指定。二階數(shù)（stts751-0和stts751-1）提供兩套不同的從機(jī)地址總數(shù)有八。因此，多達(dá)八個(gè)設(shè)備可以共享相同的2線SMBus沒(méi)有歧義，從而允許在應(yīng)用程序中的多個(gè)溫度區(qū)監(jiān)測(cè)。

兩線接口可以支持傳輸速率高達(dá)400千赫。兩小體積封裝可供選擇：一udfn-6l和標(biāo)準(zhǔn)SOT23-6L封裝。

Key Features

• Operating voltage 2.25 V to 3.6 V

• Operating temperature –40 °C to +125 °C

• Programmable

• 10 different conversion rates 0.0625 to 32 conversions/sec. 1 conversion/sec. - default

• 4 different resolutions 9-bit (0.5 °C/LSB) to 12-bit (0.0625 °C/LSB) 10-bit (0.25 °C/LSB) - default

• Low supply current

• 50 μA (typ) for 8 conversions/sec.

• 20 μA (typ) for 1 conversion/sec.

• 3 μA (typ) standby

• Accuracy

• ±1.0 °C (typ) 0 °C to +85 °C

• ±2.0 °C (typ) –40 °C to +125 °C

• One-shot mode for power saving

• Fast conversion time 21 ms (typ) 10-bit

• Pull-up resistor value allows single pin to select one of four slave addresses

• Supports 400 kHz serial clock

• SMBus 2.0 compatible

• SMBus ALERT (ARA) support

• SMBus timeout

• RoHS/green

主要特點(diǎn)

工作電壓2.25伏至3.6伏

工作溫度40°C至125°C

可編程

10個(gè)不同的轉(zhuǎn)換率0.0625至32轉(zhuǎn)換/秒。1轉(zhuǎn)換/秒。?默認(rèn)

4種不同的分辨率，9位（0.5°C / LSB）12位（0.0625°C / LSB）10位（0.25°C / LSB）違約

低電源電流

50μ一（典型值）8轉(zhuǎn)換/秒

20μ一（典型值）1轉(zhuǎn)/秒

3μ一（典型值）備

精度

±1°C（典型值）0°C + 85°C

±2°C（典型值）–40°C + 125°C

節(jié)電的一種拍攝方式

快速的轉(zhuǎn)換時(shí)間21毫秒（典型值）10點(diǎn)

上拉電阻值允許單引腳選擇四個(gè)從地址之一

支持400千赫串行時(shí)鐘

SMBus兼容2

SMBus警報(bào)（ARA）的支持

SMBus超時(shí)

RoHS /綠色