MTS102 - Motorola / Freescale Semiconductor

SILICON TEMPERATURE SENSORS

designed for temperature sensing applications in automotive,

consumer, and industrial products requiring low cost and high

accuracy.

Precise Temperature Accuracy Over Extreme Temperature

MTS1 02: f2°C from -40°C to +150°C

Precise Temperature Coefficient

Fast Thermal Time Constant

3Seconds —Liquid

8Seconds —Air

Linear VBE versus Temperature Curve Relationship

Other Packages Available

Emitter-Base Voltage vEB4.0 +, i:cg,~pc

Collector Current —Contlnuous- Ic 100 <qp !~:amAd~

Operating and Storage Junction ‘J Tstg -55 to +~:.bo ““ Oc

Temperature Range ,i,:::”

6Emitter I

q\VBE (nom) =620 mV

s400 -VBE(nom)= 600 mV -

&VBE(nom) =580 mV

200 II11IIIIIII

-40 040 80 120 160

TA, AMBIENTTEMPERATURE(°CI

MTSI02

MTS103

MTS105

—R SECT. AA

]MILLIMETERS INCHES

DIM \MIN IMAX MIN MAX

A4,32 5.33 0.170 0.210

B4,44 5.21 0.175 0.205

c318 419 ;0.125 0.165

D0.41 056 0.016 0.022.

F041 048 0.016 0.019

G~l14 140 0.045 0.055

H\- 2.54 -0100.

J!241 267,0095 0105

K] 1270\ -I0.500 -

L635! -\0.250 -

N; 203 :292’ 0080 0115

P292 :-]0115 -

R1343 I-I0.135 -i

s036 041 iOO14 0016 ;

All JEDEC d,mens,ons and noles applv

CASE 29-02

TO.92

@MOTOROLA INC j%. DS2536 R1

ELECTRICAL CHARACTERISTICS (TA =25°C unless otherwtse noted}

Characteristic Symbol Min Typ Max Unit

Emitter-Base Breakdown Voltage V(BR)EBO 4.0 ——Vdc

(iE =100 ~Adc, IC =O)

Base-Emitter Voltage

(Ic =0.1 mA) VBE 5B0 595 620 mV

Base-Emitter Voltage Matching, Note 1~vBE mV .!,.

X*V,

(1c =0.1 mA, TA= 25°C 20.05°CI MTS102 $...:\t)rp,,,

——?3.0 \:.*\

MTS103 ,,\\l,

——?4.0 .ty \‘~’.],,

MTSI05 “~‘i$:,;3,

——?7.0 f~.~i,“::’,,,.,,,

Temperature Matching Accuracy, Note 2., .?.),:“.

(TI =40°C, T2 =+150°C, TA= 25°C =0.05°C) MTS102 ?2.0 ,,,1$$

——

MTS103 — —

MTS105 ——~,—

Temperature Coefflclent, Notes 3 and 4 TC -2.28 -2.265

(VBE =595 mV, Ic =0,1 mA)

Thermal Time Constant

Liquid ‘TH —

Flowing Air —

Dependence of TC on VBE @25’C JTC LVBE –,fi~,~33 —mV/cC

(Note 4, Figure 3) ,;.:,;+~ti::~,,?f.$

,: +:9, mV

,,,*:*,?

THERMAL CHARACTERISTICS $.~ ~~.$!t

.,+ ‘t?{,.-,,$i

,*! ~ ~,\.\.

Characteristic Symbol “J.:.i.’

‘~t.~$tMax

,.,~“\,. Unit

Thermal Resistance, Junct!on to Amblen~ ReJA i‘~$?*c,:\ 200 Oc. w

<J’

*$\, “’$<\j

NOTES ?,.<,, ,:($.

4’:.{>,,

i?~.,~e.,,,t<h.

1All dev!ces w!th!n anyone group or package WIII be matched for VBEto Ihe loler~~f<~rifif!ed in the elec!r!cal character! stlcstable Each dev!ce WIII be

labeled w!lh the mean V6E value for !hal group . ,,

‘:$1!

2All dev)ces wlfhrn an lnd)vldual group as described tn Note 1. WIII track w!thln<~e Sbecofled temperature accuracv Includes varlattons )n TC VBE, and

nonllnear!!y In the range -40 to -150CC Nonltnearitv IS lyp!cally le:?~~hao =1 -C In th!s range (See Ftgure 4)

3The TC as defined by aleast-square I!near regression for VBE versu$~~$ralure over the range -40 to.150°C for anominal VBE of 595 mV at 25’C

For olher nomtnal V~E values the value of the TC must be adj~~e’aior l%e dependence of the TC on VBE {see Note 4)

$,Kh.>:*,\\,*.!-

4For nominal VBE at 25 °Cotherthan 595 mV, the TC must be cof$ecx@DStng the equallon TC= -2 265+0 003(VBE 595) where VBE IS in mVandthe TC

IS In mV CC The accuracv oi lhls TC IS typically ~0 01 rn$M$~J~,@*~+

5For max,mum temperature accuracy IC should nol excee~.~,~$.$ $$ee Ffgure 2]

,*.<,.’:s$i.k. >’

:T~y.!* >:;+!.

~i’$

~-~ ~<:y,he,

‘,:’:$:), .,$,

~,>1.

[!I, lil; ., I

I,,

001 002 005 0? 02 05 10 20 50 10

Ic COLLECTOR

CURRENT lmA,

FIGURE 3 – TEMPERATURE COEFFICIENT versus

BASE-EMITTER VOLTAGE

620 1

TC=-2.265 +00033 [V8E-5951

E600

;

580

-232 -228 -224 -2 2n -716

Tc TEMPERATURE COEFFICIENT [mV/’Cl

@MOTOROLA Semiconductor Products Inc.

-—

eFIGURE 4 – LINEARITY ERROR versus TEMPERATURE

.2 0

=+10 -—\

ao\

E/‘

z-lo 1

-20

-40 -20 0 20 40 60 80 100 120 140 160

TEMPERATURE(“CI

b. If VBE(nom) islessthan orgreaterthan 595 mV

determine TC from the relationship described

in Note 4.

(1) TC ❑-2.265 +0.0033 (VBE -595) or see

Figure 3,

APPLICATIONS INFORMATION

The base and collector leads of the device should be

connected together In the operating ci;cuit (pins2 and 3)

They are not internally connected

,,,,&&#*Q– Customer receives ashipment of MTS102

‘f~$~.~’rces. The shipment consists of three groups of

‘t#ifferent nominal VBE values. .

Group 1: VBE (nom)= 595 mV

Group 2: VBE (nom)= 580 mV

Group 3: VBE (nom)= 620 mV

Find —VBE versus Temperature Reiationshlp

1. Determine value of TC:

a. If VBE(nom)= 595 mV, TC=-2.265 mV/°Cfrom

the Electrical Characteristics table.

@MOTOROLA

?nq 1,1I1IJ

‘u” -40

040 80 120

TA,AMBIENTTEMPERATUREI°CI

Given any measured VBE, the value of TA (to the

accuracy value specified: MTS102 -z2° C,

MTS103-t3°C, MTS105-t5°C)canbe read from

the above curve, or calculated from equation 2

Higher temperature accuracies can be achieved

if the collector current, IC, is controlled to react In

accordance with and to compensate for the

Iinearltyerror. Using this concept practical clrcults

have been built tnwhich these sensor shave

yielded accuracies within fO.l °C and tO 01 ‘C

Reference ‘“Transistors -- AHot Tip for Accurate

Temperature sensing”, pat o’Neiland Carl

Derrington, Electronics 1979.

Semiconductor Products Inc.

TYPICAL CIRCUITS

FIGURE 5 – ABSOLUTE TEMPERATURE MEASUREMENT FIGURE 6 – DIFFERENTIAL TEMPERATURE MEASUREMENT

120k (l%)

.Svout

@!+‘-1,;:

llOk 100k RCAL

50 k=

MTS102 MC7812 O+15Vor

=Greater

I*02u F

NOTE:

&+’

With Q1 at aknown temperature, ad)ust RCAL

to set output voltage to Vout =TEMP x10 mV,

Output of MTS1 02, 3, 5ISthen converted 10

Vout =10 mV/O -(“F, ‘C, or ‘K)

oto 150°c 120k(l 04)

t I I t

NOTE With 01 any@iQ2 %* identical temperature

adjust RC~$$\@~.j,~out =O000 V

~‘gov

470n 2N2646

l.Ok B2 ~B1 ‘“’~ensor output to ad!gltal format which may be

~::?~ used for direct connection to an MPU

~;,

...... Reference W.J Prudhomme,

Popular E/ectrontcs, December 1976, Page 62

IC1 =74?A

620 pF

+(= 6+10 ‘: ~

7ICIB

IF10k

loon

All resistors are 10Oh1/4 watt except 6.2 kwh!ch is 5%61/4 watt

output

(to MPU)

Motorola reserves the rlghf to make changes to anv products herein 10 Improve rel,ablllt~ funct!on or design Motorola does no! assume anv I,ab!l,tv ar,s,ng

OU1of !he application or use of anv product or C!rcult descrthd herein neither does It convev any license under Its Datenl r!ghts nor lhe rlghrs of others I

@Semiconductor Products Inc.

Pt8nl.d !n Sw,tzorland