ts3006 page 1 ? 2013 touchstone semiconductor, inc. all rights reserved. features ? ultra low supply current : 1.9 a at 25k hz ? supply voltage operation: 1.55v to 5.25v ? single resistor sets fout at 50% duty cycle ? fout period: ? 9 khz fout 300khz ? single resistor sets output frequency ? fout period accuracy: 3 % ? fout period drift: 0.02 % /oc ? fout output driver resistance: 160 applications portable and battery - powered equipment low - parts - count nanopower oscillator compact micropower replacement for crystal and ceramic oscillators micropower pulse - width modulation control micropower pulse - position modulation control micropower clock generation micropower sequential timing description the ts3006 is a single - supply , second - generation touchstone semi oscillator/timer fully specified to operate at a supply voltage range of 1.55v to 5.25v while consuming less than 2.4 a (max) supply current. requiring only a resistor to set the base output fr equency (or output period) at 25k h z (or 40 s) w ith a 50% duty cycle, the ts3006 timer/oscillator is compact, easy - to - use, and versatile. optimized for ultra - long life, low frequency, battery - powered/portable applications, ts3006 joins the ts 3001, ts3002, ts3004, and ts3005 i n touchstones cmos timer family in its nanowatt analog? series of high - performance analog integrated circuits. t he ts3006 output frequency can be user - adjusted from 9 khz to 300khz with a single resistor . in addition, the ts3006 represents a 25% reduction in pcb area and a factor - of - 10 lower power consumption over other cmos - based integrated circuit oscillators/timers. when compared against industry - standard 555 - timer - based products, the ts3006 offers up to 84% reduction in pcb a rea and over three orders of magnitude lower power consumption. the ts3006 is fully specified over the - 40c to +85c temperature range and i s available in a low - profile, 8 - pin 3x3mm tdfn package with an exposed back - side paddle. a 1.55v to 5 .25 v, 1.9a, 9khz to 300khz silicon timer typical application circuit t he touchstone semicondu c tor logo and nanowatt analog are registered trademark s of touchstone semiconductor, incorporated.
ts3006 page 2 ts3006ds r1p0 rtfds absolute maximum rat ings v dd to gnd ................................ ............................... - 0.3v to +5.5 v pwm_cntrl to gnd ................................ .............. - 0.3v to +5.5 v f out , pwmout to gnd ................................ ......... - 0.3v to +5.5v rset to gnd ................................ ........................... - 0.3v to +2 .5 v cpwm to gnd ................................ ......................... - 0.3v to + 5.5 v fdiv to gnd ................................ ............................ - 0.3v to +5.5 v continuous power dissipation (t a = +70c) 8 - pin tdfn (derate at 23.8mw/c above +70c) ....... 1951 mw operating temperature range ................................ - 40c to +85c storage temperature range ................................ . - 65c to +150c lead temperature (s oldering, 10s) ................................ ..... +300c electrical and thermal s tresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is not implied. exposure to any absolute maximum rating conditions for extended periods may affect device reliability and lifetime . package/ordering information order number part marking carrier quantity ts3006 itd8 33 tp 3006 i tape & reel ----- ts3006 itd8 33 t tape & reel 3000 lead - free program: touchstone semico nductor supplies only lead - free packaging. consult touchstone semiconductor for products specified with wider operating temperature ranges.
ts3006 ts3006ds r1p0 page 3 rtdfs electrical character istics v dd = 3 v, v pwm_cntrl = v dd , r set = 4.32m?, r load(fout) = open circuit, c load(fout) = 0pf unless otherwise noted. v alues are at t a = 25c unless otherwise noted. see note 1. parameter symbol conditions min typ max units supply voltage v dd 1.5 5 5.25 v supply current i dd 1.9 2.4 a - 40c t a 85c 2.7 fout period t fout 39 40.1 41.2 s - 40c t a 85c 38 42 fout period line regulation t fout /v 1 .5 5 v v dd 5 .25 v 0.17 %/v fout duty cycle 49 51 % fout period temperature coefficient t fout /t 0.02 %/c uvlo hysteresis v uvlo (v dd =1.55v ) C (v dd _ shutdown voltage ) 150 250 mv fout rise time t rise see note 2, c l = 15pf 10 ns fout fall time t fall see note 2, c l = 15pf 10 ns fout jitter see note 3 0.001 % rset pin voltage v(rset) 0.3 v maximum oscillator frequency fosc rset= 3 60 k 300 k hz high level output voltage, fout v dd - v oh i oh = 1ma 160 mv low l evel output voltage, fout v ol i ol = 1ma 140 mv note 1: all devices are 100% production tested at t a = +25c and are guaranteed by characterization for t a = t min to t max , as specified. note 2: output rise and fall times are measured between the 10% and 90% of the v dd power - supply voltage levels. the specification is based on lab bench characterization and is not tested in production. note 3 : timing jitter is the ratio of the peak - to - peak variation of the period to the mean of the period. the specification is based on lab bench characterization and is not tested in production.
ts3006 page 4 ts3006ds r1p0 rtfds period - s supply current - a 20 40 4 0 supply current vs fout period 0 60 6 8 2 80 100 supply voltage - volt period - s 2.29 3.03 40.12 40.1 40.18 fout period vs supply voltage 1.55 3.77 40.14 40.16 4.51 c load - pf supply current - a 10 20 4 0 supply current vs c load(fout) 0 30 6 8 2 40 5.25 temperature - oc supply current - a 2.1 1.7 supply current vs temperature 2.3 2.5 1.9 - 15 10 - 40 35 60 85 supply voltage - volt start - up time - ms 6 5 9 start - up time vs supply voltage 7 8 10 temperature - oc period - s - 15 10 39.5 39 fout period vs temperature - 40 35 40 60 85 40.5 41 typical performance characteristics v dd = 3 v, v pwm_cntrl = v dd , r set = 4.32m?, r load(fout) = open circuit, c load(fout) = 0pf unless otherwise noted. v alues are at t a = 25c unless otherwise noted. 10 12 14 40.2 2.29 3.03 1.55 3.77 4.51 5.25 11
ts3006 ts3006ds r1p0 page 5 rtdfs typical performance characteristics v dd = 3 v, v pwm_cntrl = v dd , r set = 4.32m?, r load(fout) = open circuit, c load(fout) = 0pf unless otherwise noted. v alues are at t a = 25c unless otherwise noted. r set - m period - s 2 4 40 0 100 period vs r set 0 6 60 80 20 8 10 percent of units - % supply current - a 0% supply current distribution 1.95 5% 10% 15% 20% 25% 30% 35% 1.97 1.99 2.01 fout v dd = 3v, c load = 15 pf 5s/div fout v dd = 5v, c load = 15 pf 5s/div fout 1v/div fout 1v/div 12 120
ts3006 page 6 ts3006ds r1p0 rtfds pin functions pin name function 1 fout fixed frequency output. a push - pull output stage with an output resistance of 160 . fout pin swings from gnd to vdd . for lowest power operation, capacitance loads should be minimized and resistive loads should be maximized. 2 nc non - connect. 3 , 4,5,6 gnd ground. connect this pin to the systems analog ground plane. 7 vdd power supply voltage input. the supply voltage range is 1.5 5v v dd 5.25 v. bypass this pin with a 0.1uf ceramic coupling capacitor in close proximity to the ts3006 . 8 rset fout programming resistor input. a 4.32mohm resistor connected from t his pin to ground sets the t3003 s internal oscillators output period to 40 s (25khz). f or optimal performance, the composition of the rset resistor shall be consistent with a tolerance of 1% or lower. the rset pin voltage is approximately 0.3v. block diagram
ts3006 ts3006ds r1p0 page 7 rtdfs theory of operation the ts3006 is a user - programmable oscillator where the period of the square wave at its f out terminal is generated by an external resistor connected to the rset pin . the output frequency is given by: o t 1 . 0 11 rs t equation 1. fout frequency calculation with an r set = 4.32m ? , the output frequency is approximately 25khz with a 50% duty cycle. as de sign aids, tables 1 lists ts3006 s typical o t for various standard values for r set . connect cpwm to vdd to disable the pwm function and in turn, save power. connect pwm_cntrl to vdd for a fixed pwm out output pulse width, which is determined by the cpwm pin capacit or only. applications information minimizing power consumption to keep the ts3006 s power consumption low, resistive loads at the fout and pwmout terminals increase dc power consumption and therefore should be as large as possible. capacitive loads at the fout an d pwmo ut terminals increase the ts3006 s transient power consumption and, as well, should be as small as possible. one ch allenge to minimizing the ts3006 s transient power consumption is the probe capacitance of oscilloscopes and frequency counter instruments. most instruments exhibit an input capacitance of 15pf or more. unless buffered, the increase in transient load current can be as much as 400na. to minimize capacitive loading, the technique shown in figure 1 can be used. in this circuit, the principle of series - connected capacitors can be used to reduce the effecti ve capacitive load at the ts3006 s o t and pwmout terminals. to determine the optimal value for c ext once the probe capacitance is known by simply solving for c ext using the following expression: or example, if the instruments input probe capacitance is 15pf and the desired effective load capacitance at either or both fout and pwmout terminals is to be 5p , then the value of c ext should be 7.5p . ts3006 start - up time as the ts3006 is powered up, its fout terminal (and pwmout terminal, if enabled) is active on c e the applied vdd is higher than 1.55 v . once the applied vdd is higher than 1.55 v , the master oscillator achieves steady - state operation within 8 ms. r set (m ? ) fout (khz) 0.360 300 1 108 2.49 43.37 4.32 25 6.81 15.86 9.76 11.07 12 9 table 1: fout vs r set c t = 1 1 c oad 1 c ro equation 2 : external capacitor calculation figure 1 : using an external capacitor in series with probes reduces effective capacitive load.
ts3006 page 8 ts3006ds r1p0 rtfds using a potentiometer to trim the ts3006 s output frequency by using a fixed resistor and a potentiometer, the output frequency of the ts3006 can be trimmed as shown in figure 2. by selecting a fixed resistor r1 with a tolerance of 0.1% and a potentiometer p1 with a 5% tolerance, the output frequency can be trimmed to provide a 2% trimming range . figure 2: using a fixed resistor and a potentiometer to trim the ts3006s output requency
ts3006 touchstone semiconductor, inc. page 9 630 alder drive, milpitas, ca 95035 ts3006ds r1p0 +1 (408) 215 - 1220 ? www.touchstonesemi.com rtfds p ackage outline drawing information furnished by touchstone semiconductor is believed to be accurate and reliable. however, touchstone semiconductor does not assume any responsibility for its use nor for any infringements of patents or other rights of third parties that may result f rom its use , and all information provided by touchstone semic onductor and its suppliers is provided on an as is basis, without warranty of any kind . touchstone semiconductor reserves the right to change product specifications and product descriptions at any time without any advance notice. no license is granted by i mplication or otherwise under any patent or patent rights of touchstone semiconductor. touchstone semiconductor assumes no liability for applications assistance or customer product design. customers are responsible for thei r products and applications using touchstone semiconductor components. to minimize the risk associated with customer products and applications, customers should provide adequate design and operating safeguards. trademarks and registered trademarks are the property of t heir respective owne rs. 8 - pin tdfn33 package outline drawing (n .b., drawings are not to scale) b o t t o m v i e w t o p v i e w 1 . 8 5 m a x 1 . 6 5 m i n 3 . 0 5 m a x 2 . 9 5 m i n 3 . 0 5 m a x 2 . 9 5 m i n p i n 1 m a r k i n g 0 . 2 0 r e f 0 . 2 5 r e f 0 . 3 5 r e f 1 . 6 0 m a x 1 . 4 0 m i n 0 . 5 m a x 0 . 3 m i n 0 . 3 5 m a x 0 . 2 5 m i n 0 . 6 5 r e f d e t a i l a 0 . 2 0 r e f 0 . 0 5 m a x 0 . 0 0 m i n d e t a i l a s i d e v i e w n o t e : c o n t r o l l i n g d i m e n t i o n s i n m i l i m e t e r s c o m p l i a n t w i t h j e d e c m o - 2 2 9 0 . 8 0 m a x 0 . 7 0 m i n 0 . 0 5 m a x 0 . 0 0 m i n 0 . 8 0 m a x 0 . 7 0 m i n 0 . 0 5 m a x 0 . 0 0 m i n
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