深圳市科瑞芯电子有限公司为GMT/致新正规代理商，商品原厂原装

供应带SMBus串行接口的±1°C远程和本地温度传感器，可提供样品及技术支持！

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型号：G781P8F    

封装：MSOP-8

品牌：GMT/致新

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General Description

The G781 is a precise digital thermometer that reports the temperature of both a remote sensor and its own package. The remote sensor is a diode-connected transistor typically a low-cost, easily mounted 2N3904 NPN type that replace conventional thermistors or thermocouples. Remote accuracy is ±1°C with no calibration needed. It also has a build-in noise filtering function in remote sensor measuring the diode temperature. The remote channel can also measure the die temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.

The 2-wire serial interface accepts standard System Management Bus (SMBus) Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read temperature data. The data format is 11bits plus sign, with each bit corresponding to 0.125°C, in two’s-complement format. Measurements can be done automatically and autonomously, with the conversion rate programmed by the user or programmed to operate in a single-shot mode. The adjustable rate allows the user to control the supply current drain.

The G781 and G781-1 have the same functions but different SMBus slave addresses. This allows for one of each to be on the bus at the same time.

The G781 is available in a small, 8-pin SOP， MSOP and TDFN surface-mount package.

Features

■ Two Channels: Measures Both Remote and Local Temperatures

■ No Calibration Required

■ Built-in Noise-Buster for Remote Sensor

■ SMBus 2-Wire Serial Interface

■ Programmable Under/Overtemperature Alarms

■ Supports SMBus Alert Response

■ Accuracy:

±1°C (+60°C to +100°C, remote)

±3°C (+60°C to + 100°C, local)

■ 320μA (typ) Average Supply Current During Conversion

■ +3V to +5.5V Supply Range

■ Small 8-Lead SOP, MSOP and TDFN Package

■ Remote Temperature Measurment up to 160°C by using offset shifting method (see “Measure Remote Temperature Higher Than 127°C” sec-tion)

Applications

■ Desktop and Notebook 

■ Central Office

■ Computers 

■ Telecom Equipment

■ Smart Battery Packs 

■ Test and Measurement

■ LAN Servers 

■ Multi-Chip Modules

■ Industrial Controllers

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GMT系列 
G5520A/ AT5520A/ G529A1TB1U/ G2992/ G5250/ G547/ G546/ G5640/ G5642/ G5108/ G5655/ G5657/ G5626
/G5728 /G5692 /G5699 /AT1316 /G529A2TB1U / G547E2P11U/G547I1P81U /G547F1P11U/G547F2P11U/
G547G1P11U/ G547G2P11U/ G547E1P81U/ G547E2P81U/ G547F1P81U/ G547F2P81U/ G547G1P81U/
G547G2P81U/ G517AL1TB1U/ G517AL2TB1U/ G517C3T11U/ G517G1P81U/ G517G2P81U/ G2156K11U/
M2156K11U / M1694K61U/ G5626P11U/G572***DJT11U/G5728TO1U/G5719TB1U/G5791F11U/G5691RB1U/
AT1526P11U/ AT1529F11U/ G5699RQ1U/G5175RV1U-Z/ G5322F61U/G5108P8U/G5110RE1U/G5125T11U/
AT5125T11U/ AT1316A-02TP1U/AT5160TP1U/G2620T11U/G5912R41U/G5930TBU/G5517R51U/G2510SRG1U-K/
G2583BRV1U/ G693L293TCUf / G691L293T73Uf/  G751-2P1F/ G781P8F/ G9090-180TO1U/ G9091-180T11U/
G9091-330T11U /G9091-180TA1U /G9091-330TA1U/ G524B1T11U / G524B2T11U / G2583BRV1U / G5521AR51U 
G5126/ G5958 /G5910 / G5808 /G691/ G9091/ G9141/G5177A/ G9107RC1U/ M2296B81U/ G2230BZ1U /  G2246R41U
G2515UG1U-K  G2532KE1U-K  G2731RG1U-K  G2790BK11U-K   G2534RK1U  G6001AQY1U   G2034AG21U
G5421CQT1U  M2202BK51U   G6090RC1U   G5027CRD1D   G2595EKL1U-K   G2782K11U-K   G2592K11U-K
G2517AKM1U  G2518KK1U  G2224KH1U  G2261TO1U   G2260-330N61U  G2260-190T11U  G2267TO1U                
G2262AU1U  G2262BTR1U  G2822RC1U   G2057F11U  G2258TB1U  G2258TM1U