ts3006 demo board page 1 ? 2013 touchstone semiconductor, inc. all rights reserved. features ? 5 v supply voltage ? fout output period : 40 s (2 5k hz) o rset = 4.32 m ? fully assembled and tested ? 2in x 2in 2 - layer circuit boar d component list designation qty description c2 1 4.7f 10% capacitor (0805) r 1 1 4.32 m 1% (0805) u1 1 ts3006 vdd,f_ out 2 test points 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. the ts3006 requires only a n rset = 4.32 m resistor to set the fout output period to 4 0 s (25khz) . the complete circuit is designed at a supply voltage of 5v. the ts3006 is fully specified over the - 40c to +85c temperature range and is available in a low - profile, 8 - pin 3x3 mm tdfn package with an exposed back - side paddle . product datasheet and additional documentation can be found on the factory web site at www.touchstonesemi.com . ordering information order number description ts3006 db ts3006 demo board a 1.55v to 5 .25 v, 1. 9 a, 9 khz to 3 00khz silicon timer figure 1 . ts3006 demo board circuit
ts3006 demo board ts3006 db r1p0 page 2 rtfds d escription t he ts3006 requires only an rset = 4.32 m resistor to set the fout/pw mout output period to 4 0 s (25khz) . the complete circuit is designed at a supply voltage of 5v and it is shown in figure 1 . 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. t he output period is given by: o t ( ) 1 08 11 s t equation 1. fout frequency calculation with r set = 4.32 m ? , the fout period is approximately 4 0 s (25khz) with a 50% duty cycle. as design aids, tables 1 lists ts3006 s typical o t f requency for various standard values for r set . quick start procedure required equipment ? ts3006 demo board ? dc power supply ? oscilloscope model agilent dso1014a or equivalent ? one 10x , 15p //10m oscilloscope probe to evaluate the ts3006 silicon timer, the following steps are to be performed: 1) before connecting the dc power supply to the demo board, turn on the power supply, set the dc voltage to 5v, and then turn it off. 2) connect the dc power supply positive terminal to the test point labeled vdd. connect the negative terminal of the dc power supply to the test point labeled gnd. 3) to monitor the f out output signal, connect the signal terminal of an oscilloscope probe to th e test point labeled f out and the ground terminal to the test point labeled gnd. 4) sel ect a channel on the oscilloscope and set the vertical voltage sca le and the vertical position to 2 v/div and 0v , respectively. set the horizontal time scale to 5 s/div. the coupling should be dc coupling. turn on the power supply. the supply current will vary depending on the load on the output . given the default set - up on the board, the fout out put period is approximately 40 s. with an output load of 15pf on fout due to the oscilloscope probe , the supp ly current should be less than 4 a. 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 : f out vs r set
ts3006 demo board touchstone semiconductor, inc. page 3 630 alder drive, milpitas, ca 95035 ts3006 db r1p0 +1 (408) 215 - 1220 ? www.touchstonesemi.com rtfds figure 3 . top layer view #1 figure 4 . top layer view #2 figure 5 . bottom layer (gnd) #2 figure 2 . fout period vs r set figure 6 . bottom layer (gnd) #2 r set - m period - s 2 4 40 0 100 period vs r set 0 6 60 80 20 8 10 12 120
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