Datasheet > TC1068MQR

TC1068MQR

更新时间： 2024-09-19 21:22:15

品牌	Logo	应用领域
美国微芯 - MICROCHIP		光电二极管
页数	文件大小	规格书
3页	347K
描述
SPECIALTY ANALOG CIRCUIT, PDSO16, QSOP-16

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TC1068MQR 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	QSOP-16
针数：	16	Reach Compliance Code：	not_compliant
HTS代码：	8542.39.00.01	风险等级：	5.68
模拟集成电路 - 其他类型：	ANALOG CIRCUIT	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e0	长度：	4.9 mm
功能数量：	1	端子数量：	16
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	1.75 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	3 V	标称供电电压 (Vsup)：	3.3 V
表面贴装：	YES	温度等级：	MILITARY
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	3.9116 mm
Base Number Matches：	1

TC1068MQR 数据手册

AN64

Improving the Accuracy of the TC1066/TCM1617/TC1068

Thermal Diode Temperature Sensor IC

Where T_REMOTE-READis the raw data read for the remote or

external sensor. T_LOCAL-READis the raw data read for the local

or internal sensor.

Author: Abid Hussain,

Microchip Technology, Inc.

After T_ERR-REMOTEis calculated for any given set of readings,

it should be subtracted from T_REMOTE-READto arrive at the

corrected remote temperature.

INTRODUCTION

The TC1066/TCM1617/TC1068 is optimized for use with modern

CPUs and ASICs that have integrated thermal diodes on-chip.

This temperature proportional signal is acquired remotely via the

D+ and D– inputs. It also has an on-board solid state sensor

for acquiring the temperature of its own die (usually ambient

temperature).

_{REMOTE-CORRECTED}= T_REMOTE-READ– T_ERR-REMOTE

TC1066/TCM1617/TC1068

Unlike some competing devices, the TC1066/TCM1617/TC1068

has a provision for detecting its presence, identity, and hardware

revision. This is accomplished via the MFR_ID and MFR_REV

registers(seeTC1066/TCM1617/TC1068datasheet). TheMFR_ID

applies to hardware revision 01 only. Future revisions of the

TC1066/TCM1617/TC1068 may not require this compensation

scheme. However, it will not require software updates in the host

system if MFR_REV is checked.

Any temperature sensing circuit will have some finite error compo-

nents. Normally, for digital temperature sensors, it is fairly conve-

nient to factor out, via software compensation, any systematic

errors. For example, if it is known that the sensor will read +2.5°C

high under a certain electrical or thermal condition, the user can

applyaconsistentoffsetinsoftwaretocorrectforit.Thisapplication

note will show how to apply a compensation scheme to the

TC1066/TCM1617/TC1068 to improve its accuracy under certain

conditions.

Also,ifalternativetemperaturesensordevicesaretobeusedinthe

same system, the MFR_ID (unique to Microchip) can differentiate

between them and the TC1066/TCM1617/TC1068 and the host

software can branch accordingly.

SOFTWARE COMPENSATION

In a typical application, it may be possible that the TC1066/

TCM1617/TC1068 die temperature is significantly lower than that

of the remote P-N junction diode. This would be true if the TC1066/

TCM1617/TC1068 is mounted on a PC motherboard a significant

distance away from the CPU. Such a condition can increase the

error associated with the external diode. This error manifests itself

as an offset to the remote temperature reading. Depending on the

magnitude of the temperature delta, it is possible to subtract the

induced error and produce an accurate result. In the case of the

TC1066/TCM1617/TC1068 (rev. 01), the relationship of error vs.

delta is described below.

RECOMMENDATIONS

With this software compensation scheme it is possible to obtain

remote sensing performance that is superior to that specified in

the datasheet. Additionally, if this socket is multiple sourced, the

software has a means to differentiate and apply the compensation

scheme only to those applicable versions (Microchip TC1066/

TCM1617/TC1068) which can benefit.

T_ERR-REMOTE= 0.0855 x (T_REMOTE-READ– T_LOCAL-READ) – 0.4

DS00775A-page 1

12 3

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与TC1068MQR相关器件

型号	品牌	获取价格	描述	数据表
TC106C3AJ	VISHAY	获取价格	CAPACITOR, TANTALUM, SOLID, POLARIZED, 6 V, 10 uF, THROUGH HOLE MOUNT, AXIAL LEADED
TC1070	TELCOM	获取价格	50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN
TC1070	MICROCHIP	获取价格	50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown
TC1070_07	MICROCHIP	获取价格	50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown
TC1070ECT	MICROCHIP	获取价格	ADJUSTABLE POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO5, PLASTIC, EIAJ, SC-74A, SOT-23A,
TC1070ECT713	MICROCHIP	获取价格	Adjustable Positive LDO Regulator, 0.25V Dropout, CMOS, PDSO5, SOT-23A, 5 PIN
TC1070VCT	MICROCHIP	获取价格	50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown
TC1070VCT	TELCOM	获取价格	50mA ADJUSTABLE CMOS LDO WITH SHUTDOWN
TC1070VCT713	MICROCHIP	获取价格	50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown
TC1070VCTRT	MICROCHIP	获取价格	1.165 V-5.5 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO5, SOT-23A, 5 PIN

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