telefunken semiconductors u 6028 bs-fp u 6024 bs-fp 1 rev. a1: 22.11.1994 6-ghz frequency divider description u 6024/28 bs are high speed frequency dividers using telefunken's advanced bipolar technology. the input frequency ranges from 3 to 6 ghz. output buffer and voltage regulator are integrated. the devices are suitable for satellite communications, instrumentation and telecomunications. features u 6024 bs divides by 4 u 6028 bs divides by 8 very low current consumption (45 ma typical) 6-ghz maximum operating frequency 5-v (typical) supply voltage esd protected according to mil-std.883 method 3015 class 2 so-8 package benefits extended operation time due to low current consumption only three external components low rf input level reduces radiation problems block diagram divider u 6024 bs by 4 u 6028 bs by 8 emitter follower o/p stage voltage regulator 8 7 6 v s 2 3 rf 1,5 4 nc gnd 94 7891 e i rf o
telefunken semiconductors u 6028 bs-fp u 6024 bs-fp 2 rev. a1: 22.11.1994 pin description pin symbol function 1 nc not connected 2 rf i rf input 3 rf i rf input with internal decoupling capacitor 4 gnd ground 5 nc not connected 6 rf o rf output 7 rf o rf output 8 v s supply voltage 1 2 8 3 4 7 5 6 94 7837 e nc gnd nc v s rf i rf i rf o rf o absolute maximum ratings parameters symbol value unit supply voltage pin 8 v s 6 v input voltage range pins 2 and 3 v i 0 to vs v junction temperature t j 125 c storage temperature range t stg 40 to + 125 c operating range parameters symbol value unit supply voltage range v s 4.5 to 5.5 v ambient temperature range t amb 25 to + 80 c thermal resistance parameters symbol value unit junction ambient, so-8 r thja 175 k/w electrical characteristics test conditions (unless otherwise specified): v s = 4.5 to 5.5 v, t amb = 0 to 70 c., referred to test circuit parameters test conditions / pin symbol min typ max unit supply current v s = 5 v pin 8 i s 45 ma rf input pin 2 rf i input sensitivity r s = 50 w v rfi figure 2 large signal compatibility r s = 50 w v maxrfi figure 2 input frequency range fi min fi max 6000 3000 mhz rf output pins 6 and 7 rf o output level v rfo 200 mv pp dc output level high low v s = 5 v r l 10 k w rf dch rf dcl 3.6 3.1 v v note: 1 rms-voltage calculated from the measured available power r s = system resistance, r l = load resistance
telefunken semiconductors u 6028 bs-fp u 6024 bs-fp 3 rev. a1: 22.11.1994 output stage 2.3 k 2.3 k 7 6 1, 5 n.c. 94 7886 rf o figure 1 input sensitivity vs. frequency 0 2000 4000 6000 8000 10 100 1000 v ( mv ) i rf i ( mhz ) 94 7887 e rms r s =50 , v s =5v typical values for t amb =25 c guaranteed operating range t amb = 0 to 70 c 70 c (35 c) 25 c figure 2
telefunken semiconductors u 6028 bs-fp u 6024 bs-fp 4 rev. a1: 22.11.1994 input impedance s11 6100 0.2 j 0.5 j j 2j 5j 0 0.2j 0.5j j 2j 5j 0. 2 0. 5 1 2 5 100 300 500 700 900 1500 1100 130 0 1700 1900 2100 2300 2500 2700 2900 3100 3300 3500 3700 3900 4100 4300 4500 4700 4900 5100 5300 5500 5700 5900 93 7813 e figure 3
telefunken semiconductors u 6028 bs-fp u 6024 bs-fp 5 rev. a1: 22.11.1994 application master-slave-d-flip-flops (ms-d-ff's) can be used for frequency division by feeding back the inverted output to the data input. typical for this kind of dividers is a free running oscillation of the first divider stage. here the input sensitivity of the circuit has a minimum (see input sensitivity vs. frequency). an oscillation frequency of e.g. 5.6 ghz (related to the input) will result in an output frequency of 5.6 ghz: 8 = 700 mhz. temic's self oscillating frequency dividers are indicated with suffix aso (u 6028 bs-afp). this oscillation often is used for quality control of ic's: the higher the frequency, the better the performance. on the other hand, if this oscillation causes problems e.g. in frequency counters an external offset can be added. this can simply be done by connecting an ohmic resistor from pin 3 (rf input) to ground. a value of r 3 = 47 k w will stop self oscillation without degrading the input sensitivity markly. smaller values will decrease the sensitivity especially at higher frequencies. 94 7888 e 3 r 3 < 50 k figure 4 application circuitry dimensions in mm package: so 8 94 8862
telefunken semiconductors u 6028 bs-fp u 6024 bs-fp 6 rev. a1: 22.11.1994 ozone depleting substances policy statement it is the policy of temic telefunken microelectronic gmbh to 1. meet all present and future national and international statutory requirements and 2. regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. of particular concern is the control or elimination of releases into the atmosphere of those substances which are known as ozone depleting substances ( odss). the montreal protocol ( 1987) and its london amendments ( 1990) will soon severely restrict the use of odss and forbid their use within the next ten years. various national and international initiatives are pressing for an earlier ban on these substances. temic telefunken microelectronic gmbh semiconductor division has been able to use its policy of continuous improvements to eliminate the use of any odss listed in the following documents. 1. annex a, b and list of transitional substances of the montreal protocol and the london amendments respectively 2 . class i and ii ozone depleting substances in the clean air act amendments of 1990 by the environmental protection agency ( epa ) in the usa and 3. council decision 88/540/eec and 91/690/eec annex a, b and c ( transitional substances ) respectively. temic can certify that our semiconductors are not manufactured with and do not contain ozone depleting substances. we reserve the right to make changes without further notice to improve technical design . parameters can vary in different applications. all operating parameters must be validated by the customer for each customer application. should the buyer use temic products for any unintended or unauthorized application the buyer shall indemnify temic against all claims, costs, damages, and expenses arising out of, directly or indirectly, personal damage, injury or death associated with such unintended or unauthorized use. temic telefunken microelectronic gmbh, p.o.b. 3535, d-74025 heilbronn, germany telephone: 49 (0)7131 67 2831, fax number: 49 (0)7131 67 2423
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