STTS3000 2.3 V memory module temperature sensor

The STTS3000 is targeted for DIMM modules in mobile personal computing platforms (laptops), servers and other industrial applications. The thermal sensor (TS) in the STTS3000 is compliant with the JEDEC specification TS3000 which defines memory module thermal sensors requirements for mobile platforms.

The TS provides space as well as cost savings for mobile and server platform dual inline memory modules (DIMM) manufacturers, as it is packaged in the compact 2 mm x 3 mm 8-lead TDFN package with a thinner maximum height of 0.80 mm. The DN package is compliant to JEDEC MO-229, variation WCED-3.

The digital temperature sensor has a programmable 9-12 bit analog-to-digital converter (ADC) which monitors and digitizes the temperature to a resolution of up to 0.0625 °C. The default resolution is 0.25 °C/LSB (10-bit). The typical accuracies over these temperature ranges are:

±2 °C over the full temperature measurement range of –40 °C to 125 °C

±1 °C in the +40 °C to +125 °C active temperature range, and

±0.5 °C in the +75 °C to +95 °C monitor temperature range

The temperature sensor in the STTS3000 is specified for operating at supply voltages from 2.3 V to 3.6 V. Operating at 3.3 V, the typical supply current is 160 µA (includes SMBus communication current).

The on-board sigma delta ADC converts the measured temperature to a digital value that is calibrated in °C. For Fahrenheit applications, a lookup table or conversion routine is required. The STTS3000 is factory-calibrated and requires no external components to measure temperature.

The digital temperature sensor has user-programmable registers that provide the capabilities for DIMM temperature-sensing applications. The open drain event output pin is active when the monitoring temperature exceeds a programmable limit, or it falls above or below an alarm window. The user has the option to set the event output as a critical temperature output. This pin can be configured to operate in either a comparator mode for thermostat operation or in interrupt mode

技术特性

STTS3000 is a 2.3 V memory module temperature sensor forward compatible with JEDEC standard TS3000 and backward compatible with STTS424
Operating temperature range:
- –40 °C to +125 °C
Single supply voltage: 2.3 V to 3.6 V
Temperature sensor resolution: programmable (9-12 bits) 0.25 °C (typ)/LSB - (10-bit) default
Temperature sensor accuracy (max):
- ± 1 °C from +75 °C to +95 °C
- ± 2 °C from +40 °C to +125 °C
- ± 3 °C from –40 °C to +125 °C
ADC conversion time: 125 ms (max) at default resolution (10-bit)
Typical operating supply current: 160 µA
Temperature hysteresis selectable set points from: 0, 1.5, 3, 6.0 °C
Two-wire SMBus/I²C - compatible serial interface
Supports up to 400 kHz transfer rate
Does not initiate clock stretching
Supports SMBus timeout 25 ms - 35 ms
Spike suppression filters on the two-wire bus inputs
Voltage hysteresis per I²C specs on the twowire bus inputs
2 mm x 3 mm TDFN8, height: 0.80 mm (max)(a)
RoHS compliant, halogen-free

功能框图

STTS3000 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
STTS3000B2DN3F	Active		1000	TDFN8 2x3x0.75	Tape And Reel	-40 °C-125 °C	STTS3000B2DN3F

DATA BRIEF

描述	版本	大小
2.3 V memory module temperature sensor	1	126KB