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tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 1/10 high accuracy temperature sensor 16/24 bit resolution low power spi/i 2 c interface qfn16 package description the tsys01 is a single chip, versatile, new technol ogy temperature sensor. the tsys01 provides factory calibrated temperature information . it includes a temperature sensing chip and a 24 bit -adc. the essence of the digital 24 bit temperature value and the internal factory set calibration values lead to highly accur ate temperature information accompanied by high measurement resolution. the tsys01 can be interfaced to any microcontroller by an i 2 c or spi interface. this microcontroller has to calculate the temperature re sult based on the adc values and the calibration parameters. the basic working principle is: converting temperature into digital 16/24 bit adc value providing calibration coefficients providing adc value and calibration coefficients b y spi or i 2 c interface. features applications high accuracy 0.1c @ temp.: -5c +50c industrial control adjustment of high accuracy temp. range on request replacement of thermistors and ntcs low current, <12.5 a (standby < 0.14 a) heating / cooling systems spi / i 2 c interface hvacr small package: qfn16 operating temperature range: -40c +125c
tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 2/10 absolute maximum ratings absolute maximum ratings are limiting values of per mitted operation and should never be exceeded under the worst possible conditions either initially or consequently. if exceeded by even the smallest amount, instantaneous catastrophi c failure can occur. and even if the device continues to operate satisfactorily, its lif e may be considerably shortened. parameter symbol conditions min typ max unit supply voltage v dd -0.3 +3.6 v operating temperature t op -40 +125 c storage temperature t stor -55 +150 c esd rating esd human body model (hbm) pin to pin including vdd and gnd -4 +4 kv humidity hum non condensing operating conditions parameter symbol conditions min typ max unit operating supply voltage v dd stabilized 2.2 3.6 v high accuracy supply voltage v dd to achieve acc1 3.2 3.4 v supply current i dd 1 sample per second 12.5 a standby current is no conversion, vdd = 3v t = 25c t = 85c 0.02 0.70 0.14 1.40 a a peak supply current i dd during conversion 1.4 ma conversion time t conv 7.40 8.22 9.04 ms serial data clock spi f sclk 20 mhz serial data clock i 2 c f scl 400 khz vdd capacitor place close to the chip 100nf operational characteristics if not otherwise noted, 3.3v supply voltage is appl ied. parameter symbol conditions min typ max unit temperature measurement range t rang -40 125 c accuracy 1 t acc1 -5c < t < +50c v dd = 3.2v C 3.4v -0.1 +0.1 c accuracy 2 t acc2 -40c < t < +125c v dd = 3.2v C 3.4v -0.5 +0.5 c pssr v dd = 2.7 C 3.6 t = 25c, c = 100nf 0.2 c temperature resolution t res 0.01 c time constant t t10-90 t 1 =25c t 2 =75c pcb 900mm 2 x 1.5mm fr4 9 s self heating sh 1 10 samples/s, 60s, still air 0.02 c
tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 3/10 analogue to digital converter parameter symbol conditions min typ max unit output word 24 bit conversion time t c 7.40 8.22 9.04 ms digital inputs (sclk, sdi, csb, ps) parameter symbol conditions min typ max unit input high voltage v ih vdd = 2.23.6v 0.7 v dd v dd v input low voltage v il vdd = 2.23.6v 0.0 v dd 0.3 v dd v cs low to first sclk rising t csl 21 ns cs high to first sclk rising t csh 21 ns sdi setup to first sclk rising t dso 6 ns sdi hold to first sclk rising t do 6 ns digital outputs (sda, sdo) parameter symbol conditions min typ max unit output high voltage v oh i source = 1ma 0.8 v dd v dd v output low voltage v ol i sink = 1ma 0.0 v dd 0.2 v dd v sdo setup to first sclk rising t qs 10 ns sdo hold to first sclk rising t qh 0 ns
tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 4/10 connection diagram pin function table pin name type function 1 vss g ground 2 csb di spi: chip select (active low) i 2 c: address selection 3 sclk/scl di spi: serial data clock i 2 c: serial data clock 4 sdi/sda dio spi: serial data input i 2 c : d ata i nput / o utput 5 sdo do spi: serial data output 6 C 9 nc --- not connected / do not connect 10 int / ext di/ai internal / external sensor selection internal sensor: connect pin10 with pin11 external sensor: connect external sensor 11 int di/ai internal / external sensor selection internal sensor: connect pin11 with pin10 external sensor: leave unconnected 12 ext di/ai internal / external sensor selection internal sensor: leave unconnected external sensor: connect external sensor 13 C 14 nc --- not connected / do not connect 15 vdd p supply voltage 16 ps di communication protocol select (0=spi, 1=i 2 c)
tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 5/10 interface description protocol selection ps pin input level has to be defined in dependence to protocol selection. ps = 0 activates spi. ps = 1 activates i 2 c. i 2 c interface a i 2 c communication message starts with a start conditi on and it is ended by a stop condition. each command consists of two bytes: the address byt e and command byte. i 2 c address selection the i 2 c address can be selected by csb pin. csb=1 then the address is 1110110x. csb=0 the address is 1110111x. therefore, two tsys01 can be interfaced on the same i 2 c bus. spi interface the serial interface is a 4-wire spi bus, operating as a slave. cs (chip select), sclk (serial clock), sdi (serial data in), and sdo (serial data out) are use d to interact with the spi master. communication with the chip starts when cs is pulle d to low and ends when cs is pulled to high. sclk is controlled by the spi master and idles low (sclk low on cs transitions, mode 0). a mode where the clock alternatively idles high is also supported (mode 3). commands the commands are the same for spi and i 2 c interface. there are four commands: reset read prom (calibration parameters) start adc temperature conversion read adc temperature result command hex value reset 0x1e start adc temperature conversion 0x48 read adc temperature result 0x00 prom read address 0 0xa0 prom read address 1 0xa2 prom read address 2 0xa4 prom read address 3 0xa6 prom read address 4 0xa8 prom read address 5 0xaa prom read address 6 0xac prom read address 7 0xae
tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 6/10 reset sequence the reset sequence has to be sent once after power- on. it can be also used to reset the device rom from an unknown condition. spi i 2 c prom read sequence the prom read command consists of two parts. first command sets up the system into prom read mode. the second part gets the data from the system . below examples are sequences to read address 3 (com mand 0xa6). spi i 2 c
tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 7/10 conversion sequence a conversion has to be started by sending this comm and. the sensor stays busy until conversion is done. when conversion is finished the data can be a ccessed by using adc read command spi the last clock will start the conversion which tsys 01 indicates by pulling sdo low. sdo goes high when conversion is completed. i 2 c when the command is sent the tsys01 stays busy unti l the conversion is done. all other commands except the reset command will not be executed durin g this time. when the conversion is finished the data can be accessed by sending a adc read command, when an acknowledge appears from tsys01. read adc result after the conversion command the adc result is read using adc read command. repeated adc read commands, or command executed without prior convers ion will return all 0 as result. spi i 2 c
tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 8/10 temperature calculation calibration parameter variable description command size / bit min max exa mple k 4 coefficient k 4 of polynomial 0xa2 16 0 65535 28446 k 3 coefficient k 3 of polynomial 0xa4 16 0 65535 24926 k 2 coefficient k 2 of polynomial 0xa6 16 0 65535 36016 k 1 coefficient k 1 of polynomial 0xa8 16 0 65535 32791 k 0 coefficient k 0 of polynomial 0xaa 16 0 65535 40781 temperature polynomal adc24 : adc value adc16 : adc24 / 256 t / c = (-2) * k 4 * 10 -21 * adc16 4 + 4 * k 3 * 10 -16 * adc16 3 + (-2) * k 2 * 10 -11 * adc16 2 + 1 * k 1 * 10 -6 * adc16 + (-1.5) * k 0 * 10 -2 example adc24 : 9378708 adc16 : 9378708 / 256 = 36636 t / c = (-2) * 28446 * 10 -21 * 36636 4 + 4 * 24926 * 10 -16 * 36636 3 + (-2 * 36016 * 10 -11 * 36636 2 + 1 * 32791 * 10-6 * 36636 + (-1.5) * 40781 * 10 -2 t / c = 10.55
tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 9/10 dimensions bottom view side view sc : special characteristic, tested while production marking line description example 1 manufacturer meas 2 product name tsys01 3 pin 1 dot, date cod e yyww 1141 sc 2
tsys01 digital temperature sensor tsys01 rev e0.3 www.meas-spec.com 2012-01-13 10/10 order information please order this product using following: part number part description G-NICO-018 tsys01 digital temperature sensor emc due to the use of these modules for oem application no ce declaration is done. especially line coupled disturbances like surge, bu rst, hf etc. cannot be removed by the module due to the small board area and low price fe ature. there is no protection circuit against reverse polarity or over voltage implemente d. the module will be designed using capacitors for bl ocking and ground plane areas in order to prevent wireless coupled disturbances as good as possible. definitions and disclaimers application information C applications that are de scribed herein for any of these products are for illustrative purpose only. meas deutschland gmbh ma kes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. life support applications C these products are not designed for use in life support appliances, devices, or systems where malfunctions of these pro ducts can reasonably be expected to result in personal injury. meas deutschland gmbh customers using or selling th is product for use in such applications do so at their own risk and agree to fully indemnify m eas deutschland gmbh for any damages resulting from such improper use or sale. technical contact information north america europe asia measurement specialties, inc. 1000 lucas way hampton, va 23666 tel: 1-800-555-1551 fax: 1-757-766-4297 email: sales@meas-spec.com web: www.meas-spec.com europe meas deutschland gmbh hauert 13, d-44227 dortmund, germany phone: +49-(0)231-9740-0 fax: +49-(0)231-9740-20 email: info.de@meas-spec.com web: www.meas-spec.com measurement specialties china ltd. no. 26, langshan road, shenzhen high-tech park (north) nanshan district, shenzhen, china 518107 phone: +86-755-33305088 fax: +86-755-33305099 email: info.cn@meas-spec.com web: www.meas-spec.com the information in this sheet has been carefully re viewed and is believed to be accurate; however, no responsibility is assumed for inaccuracies. furthermore, this information does no t convey to the purchaser of such devices any licen se under the patent rights to the manufacturer. measurement specialties, inc. reserve s the right to make changes without further notice to any product herein. measurement specialties, inc. makes no warranty, representation or guarantee regarding the suitability of its prod uct for any particular purpose, nor does measurement specialties, inc. assume any liability arising out of the application or use of any produc t or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. typical param eters can and do vary in different applications. all operating parameters must be vali dated for each customer application by customers t echnical experts. measurement specialties, inc. does not convey any license under its patent rights nor the rights of others.
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