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? 2005 microchip technology inc. ds21942a-page 1 MCP9700/01 features ? tiny analog temperature sensor ? available packages: sc70-5 ? wide temperature measurement range: - -40c to +125c ? accuracy: 4c (max.), 0c to +70c ? optimized for analog-to-digital converters (adcs): - MCP9700: 10.0 mv/c (typ.) - mcp9701: 19.5 mv/c (typ.) ? wide operating voltage range: - MCP9700: v dd = 2.3v to 5.5v - mcp9701: v dd = 3.1v to 5.5v ? low operating current: 6 a (typ.) ? optimized to drive large capacitive loads typical applications ? hard disk drives and other pc peripherals ? entertainment systems ? home appliance ? office equipment ? battery packs and portable equipment ? general purpose temperature monitoring description the MCP9700/01 low-cost, low-power and tiny tem- perature sensor family converts temperature to an analog voltage. it provides an accuracy of 4c from 0c to +70c while consuming 6 a (typ.) of operating current. the MCP9700/01 provides a low-cost solution for applications that require measurement of a relative change of temperature. when measuring relative change in temperature from 25c, an accuracy of 1c (typ.) can be realized from 0c to 70c. this accuracy can also be achieved by applying system calibration at 25c. unlike resistive sensors such as thermistors, this family does not require a signal conditioning circuit. the voltage output pin can be directly connected to an adc input of a microcontroller. the MCP9700 and mcp9701 temperature coefficients are scaled to provide a 1 c/bit resolution for an 8-bit adc with a reference voltage of 2.5v and 5v, respectively. in addition, this family is immune to the effects of parasitic capacitance and can drive large capacitive loads. this provides printed circuit board (pcb) layout design flexibility by enabling the device to be remotely located from the microcontroller. adding some capacitance at the output also helps the output transient response by reducing overshoots or undershoots. however, capacitive load is not required for sensor output stability. package type typical application circuit gnd v dd v out nc 4 1 2 3 5 sc70-5 nc MCP9700 mcp9701 gnd v dd MCP9700/01 picmicro ? microcontroller ani mclr v dd 10 k v ss v dd v out c bypass v dd 0.1 f low-power voltage outp ut temperature sensor
MCP9700/01 ds21942a-page 2 ? 2005 microchip technology inc. 1.0 electrical characteristics absolute maximum ratings ? v dd :...................................................................... 6.0v storage temperature: ........................ -65c to +150c ambient temp. with power applied:.. -40c to +125c junction temperature (t j ):................................. 150c esd protection on all pins: (hbm:mm):... (4 kv:200v) latch-up current at each pin: ...................... 200 ma ?notice: stresses above those listed under ?maximum ratings? may cause permanent damage to the device. this is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this sp ecification is not implied. exposure to maximum rating conditions for extended periods may affect device reliability. pin function name function nc not connected v out voltage output v dd power supply gnd ground dc electrical characteristics electrical specifications: unless otherwise indicated: MCP9700: v dd = 2.3v to 5.5v, gnd = ground, t a = -40c to +125c and no load. mcp9701: v dd = 3.1v to 5.5v, gnd = ground, t a = -10c to +125c and no load. parameter sym min typ max unit conditions power supply operating voltage range v dd v dd 2.3 3.1 ? ? 5.5 5.5 v v MCP9700 mcp9701 operating current i dd ?612a power supply rejection psr ? 0.1 ? c/v MCP9700 v dd = 2.3v - 4.0v mcp9701 v dd = 3.1v - 4.0v sensor accuracy (notes 1, 2) t a = +25c t a = 0c to +70c t a = -40c to +125c t a = -10c to +125c t acy t acy t acy t acy ? -4.0 -4.0 -4.0 1 ? ? ? ? +4.0 +6.0 +6.0 c c c c MCP9700 mcp9701 sensor output output voltage: t a = 0c t a = 0c v 0c v 0c ? ? 500 400 ? ? mv mv MCP9700 mcp9701 temperature coefficient t c1 t c1 ? ? 10.0 19.5 ? ? mv/c mv/c MCP9700 mcp9701 output non-linearity v onl ? 0.5 ? c t a = 0c to +70c (note 2) output current i out ??100a output impedance z out ?20? i out = 100 a, f = 500 hz output load regulation v out / i out ?1? t a = 0c to +70c, i out = 100 a turn-on time t on ? 800 ? s typical load capacitance (note 3) c load ? ? 1000 pf thermal response to 63% t res ? 1.3 ? s 30c (air) to +125c (fluid bath) ( note 4 ) note 1: the MCP9700 accuracy is tested with v dd = 3.3v, while the mcp9701 accuracy is tested with v dd = 5.0v. 2: the MCP9700/01 is characterized using the first-order or linear equation, as shown in equation 3-1. 3: the MCP9700/01 family is characterized and production-tested with a capacitive load of 1000 pf. 4: thermal response with 1 x 1 inch dual-sided copper clad.
? 2005 microchip technology inc. ds21942a-page 3 MCP9700/01 temperature characteristics electrical specifications: unless otherwise indicated, MCP9700: v dd = 2.3v to 5.5v, gnd = ground, t a = -40c to +125c and no load. mcp9701: v dd = 3.1v to 5.5v, gnd = ground, t a = -10c to +125c and no load. parameters sym min typ max units conditions temperature ranges specified temperature range t a -40 ? +125 c MCP9700 (note 1) t a -10 ? +125 c mcp9701 (note 1) operating temperature range t a -40 ? +125 c storage temperature range t a -65 ? +150 c thermal package resistances thermal resistance, 5l-sc70 ja ?331? c/w note 1: operation in this range must not cause t j to exceed maximum junction temperature (+150c).
MCP9700/01 ds21942a-page 4 ? 2005 microchip technology inc. 2.0 typical performance curves note: unless otherwise indicated, MCP9700 : v dd = 2.3v to 5.5v; mcp9701 : v dd = 3.1v to 5.5v; gnd = ground, c bypass = 0.1 f. figure 2-1: accuracy vs. ambient temperature. figure 2-2: accuracy vs. ambient temperature, with v dd . figure 2-3: supply current vs. temperature. figure 2-4: changes in accuracy vs. ambient temperature (due to load). figure 2-5: load regulation vs. ambient temperature. figure 2-6: output impedance vs. frequency. note: the graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. the performance characteristics listed herein are not tested or guaranteed. in some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. -4.0 -2.0 0.0 2.0 4.0 6.0 -50 -25 0 25 50 75 100 125 t a (c) accuracy (c) MCP9700 v dd = 3.3v mcp9701 v dd = 5.0v spec. limits -4.0 -2.0 0.0 2.0 4.0 6.0 -50-25 0 255075100125 t a (c) accuracy (c) MCP9700 v dd = 5.5v v dd = 2.3v mcp9701 v dd = 5.5v v dd = 3.1v 0.0 2.0 4.0 6.0 8.0 10.0 12.0 -50 -25 0 25 50 75 100 125 t a (c) i dd (a) MCP9700 mcp9701 -0.2 -0.1 0 0.1 0.2 -50 -25 0 25 50 75 100 125 t a (c) ' accuracy due to load (c) mcp9701 v dd = 5.0v MCP9700 v dd = 3.3v i load = 100 a 0.0 1.0 2.0 3.0 4.0 -50 -25 0 25 50 75 100 125 t a (c) load regulation ' v/ ' i ( : ) MCP9700/01 v dd = 3.3v i out = 50 a i out = 100 a i out = 200 a 1 10 100 1000 0.1 1 10 100 1000 10000 100000 frequency (hz) output impedance ( : ) v dd = 5.0v i out = 100 a t a = 26c 1k 10k 100k 100 10 1 0.1
? 2005 microchip technology inc. ds21942a-page 5 MCP9700/01 note: unless otherwise indicated, MCP9700 : v dd = 2.3v to 5.5v; mcp9701 : v dd = 3.1v to 5.5v; gnd = ground, c bypass = 0.1 f. figure 2-7: output voltage at 0c (MCP9700). figure 2-8: occurrences vs. first-order temperature coefficient (MCP9700). figure 2-9: occurrences vs. second- order temperature coefficient (MCP9700). figure 2-10: occurrences vs. temperature coefficient (mcp9701). figure 2-11: occurrences vs. first-order temperature coefficient (mcp9701). figure 2-12: occurrences vs. second- order temperature coefficient (mcp9701). 0% 5% 10% 15% 20% 25% 30% 35% 400 420 440 460 480 500 520 540 560 580 600 v 0c (mv) occurrences MCP9700 v dd = 3.3v 108 samples 0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 9.5 9.6 9.7 9.8 9.9 10.0 10.1 10.2 10.3 10.4 10.5 t c1 (mv/c) occurrences MCP9700 v dd = 3.3v 108 samples 0% 5% 10% 15% 20% 25% 30% 35% 40% -2.7 -2.4 -2.1 -1.8 -1.5 -1.2 -0.9 -0.6 -0.3 0.0 0.3 t c2 (v/c 2 ) occurrences MCP9700 v dd = 3.3v 108 samples 0% 5% 10% 15% 20% 25% 30% 35% 300 320 340 360 380 400 420 440 460 480 500 v 0c (mv) occurrences mcp9701 v dd = 5.0v 108 samples 0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 19.0 19.1 19.2 19.3 19.4 19.5 19.6 19.7 19.8 19.9 20.0 t c1 (mv/c) occurrences mcp9701 v dd = 5.0v 108 samples 0% 5% 10% 15% 20% 25% 30% 35% 40% -4.3 -4.0 -3.7 -3.4 -3.1 -2.8 -2.5 -2.2 -1.9 -1.6 -1.3 t c2 (v/c 2 ) occurrences mcp9701 v dd = 3.3v 108 samples
MCP9700/01 ds21942a-page 6 ? 2005 microchip technology inc. note: unless otherwise indicated, MCP9700 : v dd = 2.3v to 5.5v; mcp9701 : v dd = 3.1v to 5.5v; gnd = ground, c bypass = 0.1 f. figure 2-13: power supply rejection (psr) vs. ambient temperature. figure 2-14: power supply rejection (psr) vs. frequency. figure 2-15: output voltage vs. power supply. figure 2-16: output voltage vs. ambient temperature. figure 2-17: output vs. time. figure 2-18: output vs. time 0.00 0.05 0.10 0.15 0.20 0.25 0.30 -50 -25 0 25 50 75 100 125 t a (c) normalized psr (c/v) MCP9700 v dd = 2.3v to 5.5v MCP9700 v dd = 2.3v to 4.0v 0.00 0.05 0.10 0.15 0.20 0.25 0.30 -50 -25 0 25 50 75 100 125 t a (c) normalized psr (c/v) mcp9701 v dd = 3.1v to 5.5v mcp9701 v dd = 3.1v to 4.0v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 v dd (v) v out (v) t a = 26c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -50 -25 0 25 50 75 100 125 t a (c) v out (v) MCP9700 mcp9701 0 2 4 6 8 10 12 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 time (ms) v out (v) -2.5 -1.7 -0.8 0.0 0.8 1.7 2.5 i dd (ma) v dd_step = 5v t a = 26c i dd v out 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 time (ms) v out (v) -42.0 -30.0 -18.0 -6.0 6.0 18.0 30.0 i dd (a) i dd v out v dd_ramp = 5v/ms t a = 26c
? 2005 microchip technology inc. ds21942a-page 7 MCP9700/01 note: unless otherwise indicated, MCP9700 : v dd = 2.3v to 5.5v; mcp9701 : v dd = 3.1v to 5.5v; gnd = ground, c bypass = 0.1 f. figure 2-19: thermal response. 30 55 80 105 130 -2 0 2 4 6 8 1012141618 time (s) output (c) sc70-5 30c (air) to 125c (fluid bath) 1 in. x 1 in. copper clad
MCP9700/01 ds21942a-page 8 ? 2005 microchip technology inc. 3.0 functional description the MCP9700/01 temperature sensing element is essentially a p-n junction or a diode. the diode electri- cal characteristics has a temperature coefficient that provides a change in voltage based on the relative ambient temperature from -40c to 125c. the change in voltage is scaled to a temperature coefficient of 10.0 mv/c (typ.) for the MCP9700 and 19.5 mv/c (typ.) for the mcp9701. the output voltage at 0c is also scaled to 500 mv (typ.) and 400 mv (typ.) for the MCP9700 and mcp9701, respectively. this linear scale is described in the transfer function shown in equation 3-1. equation 3-1: sensor transfer function v out t c1 t a v 0 c + ? = where: t a = ambient temperature v out = sensor output voltage v 0c = sensor output voltage at 0c t c1 = temperature coefficient
? 2005 microchip technology inc. ds21942a-page 9 MCP9700/01 4.0 applications information 4.1 improving accuracy the MCP9700/01 accuracy can be improved by performing a system calibration at a specific tempera- ture. for example, calibrating the system at 25c ambient improves the measurement accuracy to a 0.5c (typ.) from 0c to 70c, as shown in figure 4-1. therefore, when measuring relative temperature change, this family measures temperature with higher accuracy. figure 4-1: relative accuracy to +25c vs. temperature. the relative change in accuracy from the calibration temperature is due to the output non-linearity from the first-order equation, specified in equation 3-1. the accuracy can be further improved by compensating for the output non-linearity. for higher accuracy, the sensor output transfer function is also derived using a second-order equation as shown in equation 4-1. the equation describes the output non-linearity. this equation is not used to characterize the part as specified in the dc electrical characteristics table; however, it provides better accuracy. equation 4-1: second-order transfer function 4.2 shutdown using microcontroller i/o pin the MCP9700/01 low operating current of 6 a (typ.) makes it ideal for battery-powered applications. however, for applications that require tighter current budget, this device can be powered using a microcon- troller input/output (i/o) pin. the i/o pin can be toggled to shutdown the device. in such applications, the microcontroller internal digital switching noise is emitted to the MCP9700/01 as power supply noise. this switching noise compromises measurement accuracy. therefore, a decoupling capacitor will be necessary. 4.3 layout considerations the MCP9700/01 does not require any additional components to operate. however, it is recommended that a decoupling capacitor of 0.1 f to 1 f be used between the v dd and gnd pins. in high-noise applica- tions, connect the power supply voltage to the v dd pin using a 200 resistor with a 1 f decoupling capacitor. a high-frequency ceramic capacitor is recommended. it is necessary for the capacitor to be located as close as possible to the v dd and gnd pins in order to provide effective noise protection. in addition, avoid tracing dig- ital lines in close proximity to the sensor. -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 -50 -25 0 25 50 75 100 125 t a (c) accuracy (c) v dd = 3.3v 10 samples where: t a = ambient temperature v out = sensor output voltage v 0c = sensor output voltage at 0c (refer to figure 2-7 and 2-10) t c1 = temperature coefficient (refer to figure 2-8 and 2-11) t c2 = temperature coefficient MCP9700 1.4 v/c 2 (typ.) mcp9701 2.7 v/c 2 (typ.) (refer to figure 2-9 and 2-12) v out = t c2 (t a + 10c)(125c ? t a ) + t c1 t a + v 0c = -t c2 t a 2 + (t c1 + 115 t c2 )t a + 1250 t c2 + v 0c
MCP9700/01 ds21942a-page 10 ? 2005 microchip technology inc. 4.4 thermal considerations the MCP9700/01 measures temperature by monitor- ing the voltage of a diode located in the die. a low impedance thermal path between the die and the pcb is provided by the pins. therefore, the MCP9700/01 effectively monitors the temperature of the pcb. however, the thermal path for the ambient air is not as efficient because the plastic device package functions as a thermal insulator from the die. this limitation applies to plastic-packaged silicon temperature sensors. if the application requires measuring ambient air, the pcb needs to be designed with proper thermal conduction to the sensor pins. the MCP9700/01 is designed to source/sink 100 a (max.). the power dissipation due to the output current is relatively insignificant. the effect of the output current can be described using equation 4-2. equation 4-2: effect of self- heating at t a = +25c (v out = 0.75v) and maximum specifica- tion of i dd =12a, v dd = 5.5v and i out = +100 a, the self-heating due to power dissipation (t j ? t a ) is 0.179c. t j t a ? ja v dd i dd v dd v out ? () + i out () = where: t j = junction temperature t a = ambient temperature ja = package thermal resistance (331c/w) v out = sensor output voltage i out = sensor output current i dd = operating current v dd = operating voltage
? 2005 microchip technology inc. ds21942a-page 11 MCP9700/01 5.0 packaging information 5.1 package marking information 5-lead sc-70 ( MCP9700 ) example: xxn (front) yww (back) au2 (front) 548 (back) device code MCP9700 aun mcp9701 avn note: applies to 5-lead sc-70. 5-lead sc-70 ( mcp9701 ) example: xxnn legend: xx...x customer-specific information y year code (last digit of calendar year) yy year code (last 2 digits of calendar year) ww week code (week of january 1 is week ?01?) nnn alphanumeric traceability code pb-free jedec designator for matte tin (sn) * this package is pb-free. the pb-free jedec designator ( ) can be found on the outer packaging for this package. note : in the event the full microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 3 e 3 e device code MCP9700 aunn mcp9701 avnn note: applies to 5-lead sc-70. av25
MCP9700/01 ds21942a-page 12 ? 2005 microchip technology inc. 5-lead plastic small outline transistor (lt) (sc-70) 0. 3 0 0.15 .012 .006 b l e ad width 0.18 0.10 .007 .004 c l e ad thickn e ss 0. 3 0 0.10 .012 .004 l foot l e ngth 2.20 1.80 .087 .071 d ov e rall l e ngth 1. 3 5 1.15 .05 3 .045 e1 mold e d packag e width 2.40 1.80 .094 .071 e ov e rall width 0.10 0.00 .004 .000 a1 standoff 1.00 0.80 .0 3 9 .0 3 1 a2 mold e d packag e thickn e ss 1.10 0.80 .04 3 .0 3 1 a ov e rall h e ight 0.65 (bsc) .026 (bsc) p pitch 5 5 n numb e r of pins max nom min max nom min dim e nsion limits millimeters* inches units e xc ee d .005" (0.127mm) p e r sid e . dim e nsions d and e1 do not includ e mold flash or protrusions. mold flash or protrusions shall not not e s: jeita (eiaj) standard: sc-70 drawing no. c04-061 *controlling param e t e r l e1 e c d 1 b p a2 a1 a q1 top of mold e d pkg to l e ad should e r q1 .004 .016 0.10 0.40 n
? 2005 microchip technology inc. ds21942a-page 11 MCP9700/01 appendix a: revision history revision a (march 2005) ? original release of this document.
MCP9700/01 ds21942a-page 12 ? 2005 microchip technology inc. notes:
? 2005 microchip technology inc. ds21942a-page 13 MCP9700/01 product identification system to order or obtain information, e. g., on pricing or delivery, refer to the factory or the listed sales office . device: MCP9700t: tiny analog temperature sensor, tape and reel, pb free mcp9701t: tiny analog temperature sensor, tape and reel, pb free temperature range: e= -40 c to +125 c package: lt = plastic small outline transistor, 5-lead part no. x /xx package temperature range device examples: a) MCP9700t-e/lt: tiny analog temperature sensor, tape and reel, -40 c to +125 c, 5ld sc70 package. a) mcp9701t-e/lt: tiny analog temperature sensor, tape and reel, -40 c to +125 c, 5ld sc70 package. ?
MCP9700/01 ds21942a-page 14 ? 2005 microchip technology inc. notes:
? 2005 microchip technology inc. ds21942a-page 15 information contained in this publication regarding device applications and the like is prov ided only for your convenience and may be superseded by updates. it is your responsibility to ensure that your application m eets with your specifications. microchip makes no representations or war- ranties of any kind whether express or implied, written or oral, statutory or otherwise, related to the information, including but not limited to its condition, quality, performance, merchantability or fitness for purpose . microchip disclaims all liability arising from this information and its use. use of microchip?s products as critical components in life support systems is not authorized except with express written approval by microchip. no licenses are conveyed, implicitly or otherwise, under any microchip intellectual property rights. trademarks the microchip name and logo, the microchip logo, accuron, dspic, k ee l oq , micro id , mplab, pic, picmicro, picstart, pro mate, powersmart, rfpic, and smartshunt are registered trademarks of microchip technology incorporated in the u.s.a. and other countries. amplab, filterlab, migratable memory, mxdev, mxlab, picmaster, seeval, smartsensor and the embedded control solutions company are registered trademarks of microchip technology incorporated in the u.s.a. analog-for-the-digital age, app lication maestro, dspicdem, dspicdem.net, dspicworks, ecan, economonitor, fansense, flexrom, fuzzylab, in-circuit serial programming, icsp, icepic, mpasm, mplib, mplink, mpsim, pickit, picdem, picdem.net, piclab, pictail, powercal, powerinfo, powermate, powertool, rflab, rfpicdem, select mode, smart serial, smarttel, total endurance and wiperlock are trademarks of microchip technology incorporated in the u.s.a. and other countries. sqtp is a service mark of mi crochip technology incorporated in the u.s.a. all other trademarks mentioned herein are property of their respective companies. ? 2005, microchip technology in corporated, printed in the u.s.a., all rights reserved. printed on recycled paper. note the following details of the code protection feature on microchip devices: ? microchip products meet the specification cont ained in their particular microchip data sheet. ? microchip believes that its family of products is one of the most secure families of its kind on the market today, when used i n the intended manner and under normal conditions. ? there are dishonest and possibly illegal methods used to breach t he code protection feature. a ll of these methods, to our knowledge, require using the microchip pro ducts in a manner outside the operating specif ications contained in microchip?s data sheets. most likely, the person doing so is engaged in theft of intellectual property. ? microchip is willing to work with the customer who is concerned about the integrity of their code. ? neither microchip nor any other semic onductor manufacturer can guarantee the security of their code. code protection does not mean that we are guaranteeing t he product as ?unbreakable.? code protection is constantly evolving. we at microchip are committed to continuously improving the code pr otection features of our products. attempts to break micr ochip?s code protection feature may be a violati on of the digital millennium copyright act. if such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that act. microchip received iso/ts-16949:2002 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona and mountain view, california in october 2003. the company?s quality system processes and procedures are for its picmicro ? 8-bit mcus, k ee l oq ? code hopping devices, serial eeproms, microperipherals, nonvolatile memory and analog products. in addition, microchip?s quality system for the design and manufacture of development systems is iso 9001:2000 certified.
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