1.0 ghz divide- by- 2/4/8 prescaler features ? high frequency operation to 1 ghz ? low supply voltage: 2.2 v to 3.5 v ? low supply current: 5.5 ma ? available in tape and reel (g08 package) description the upb587 series of devices are silicon bipolar digital prescalers which can be operated in divide-by-two, divide-by- four or divide-by-eight mode. they feature frequency re- sponse to 1 ghz, and operate from a single 3 volt supply drawing only 5.5 milliamps. the series is available in two package styles: 8 lead ceramic flat pack (upb587b), and an 8 pin plastic mini-flat package (upb587g). applications in- clude: synthesizer for dbs receiver and telecommunication applications. the low dc voltage required and power-saving current draw make them ideal for hand-held, battery-powered applications. test circuit upb587b* upb587g v cc c c c c c c c re* ro* 1 2 3 4 5 6 7 8 c = 2200 pf input output m 2 m 1 * re and ro used on test circuit as indicated below. block diagram 2 3 in bypass amp 1/2 1/2 1/2 1 v cc 1 5 6 m1 m2 4 gnd buf 7 out 8 v cc 2 electrical characteristics 1 (t a = -20 to +75 c, v cc = 2.2 to 3.5 v) part number upb587b, upb587g package outline bf08, g08 symbols parameters and conditions units min typ max i cc supply current ma 5.5 7.5 f in frequency response at p in = -20 to 0 dbm, divide-by-eight mhz 100 1000 divide-by-four mhz 100 600 divide-by-two mhz 100 300 p in = -18 to 0 dbm, divide-by-eight mhz 50 1000 divide-by-four mhz 50 600 divide-by-two mhz 50 300 p in input power at: f in = 50 to 100 mhz dbm -18 0 f in = 100 to 300 mhz, divide-by-two dbm -20 0 f in = 100 to 600 mhz, ddivide-by-four dbm -20 0 f in = 100 to 1000 mhz, divide-by-eight dbm -20 0 v o output voltage, at f in = 0.5 ghz, p in = -10 dbm, z o = 200 w v p-p 0.1 0.3 r th (j-c) thermal resistance, junction to case (upb587b) c/w 50 r th (j-a) thermal resistance, junction to ambient (upb587g) 2 c/w 270 notes: 1. v cc1 = 2.2 v to 3.5 v, v cc2 = 2.2 to 3.5 v. 2. mounted on a 5 x 5 x 0.16 mm epoxy glass circuit board. 3. to improve impedance match to a 50 w load, a 1.2 k w shunt resistor on the output line is recommended. california eastern laboratories * b version for hi-rel applications only
absolute maximum ratings 1 (t a = 25 c) symbols parameters units ratings v cc1, v cc2 supply voltage v -0.5 to 4.0 v in, v m input voltage, ratio control voltage v -0.5 to v cc + 0.5 p in input power dbm +10 p t power dissipation upb587b w 1.5 (t a = +125 c) upb587g mw 250 (t a = +85 c) t op operating temperature upb587b c -55 to +125 upb587g c -40 to +85 t stg storage temperature upb587b c -65 to +200 upb587g c -65 to +150 upb587b, upb587g frequency response (divide-by-2 @ t a = 25 c) frequency, f (ghz) frequency, f (ghz) frequency response (divide-by-2 @ v cc = 2.2 v) symbol parameter units ratings v cc1, v cc2 supply voltage v 2.2 to 3.5 t op operating temperature c -20 to +75 recommended operating conditions note: because of the high internal gain and gain compression of the upb587, this device is prone to self-oscillation in the absence of an rf input signal. if the device will be used in an application where dc power will be applied in the absence of an rf input signal, this self-oscillation can be suppressed by any of the following means: * add a shunt resistor from the rf input line to ground. the blocking capacitor should be between the resistor and the upb587, but physical separation should be minimized. typically a resistor value between 50 and 100 ohms will suppress the self- oscillation. * apply a dc offset voltage of +2.0 volts to the input pin. the voltage source should be isolated from the input pin by a series 1000 ohm resistor. * apply a dc offset voltage of +1.0 volts to the bypass pin. the voltage source should be isolated from the bypass pin by a series 1000 ohm resistor. all these approaches reduce the input sensitivity of the upb587 (by as much as 3 db for the example of a 50 ohm shunt resistor), but otherwise have no affect on the reliability or other electrical characteristics of this device. frequency, f (ghz) frequency response (divide-by-4 @ t a = 25 c) frequency, f (ghz) frequency response (divide-by-4 @ v cc = 2.2 v) guaranteed operating window * typical performance curves (t a = 25 c unless otherwise noted) input power, p in (dbm) input power, p in (dbm) input power, p in (dbm) input power, p in (dbm) note: 1. operation in excess of any one of these parameters may result in permanent damage. v cc = 2.2 v 3.0 v 3.5 v +10 0 -10 -20 -30 -40 -50 -60 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 g* o w 10 0 -10 -20 -30 -40 -50 -60 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 t a = +75?c +25?c -20?c g* o w +10 0 -10 -20 -30 -40 -50 -60 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 v cc = 2.2 v 3.0 v 3.5 v g * o w ta = +75?c +25?c -20?c +10 0 -10 -20 -30 -40 -50 -60 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 g * o w
typical performance curves upb587b, upb587g frequency response (divide-by-8 @ t a = 25 c) output level (vpp) 0 500 1000 1500 2.0 1.0 0 1 2 3 4 5 6 input frequency (mhz) 0 500 1000 1500 0 0.5 1.0 1/2 1/4 1/8 upb587g output level vs. frequency & division ratio 1. re = 680 w 2. re = 910 w 3. re = 1.3 k w 4. re = 2.2 k w 5. re = 3.3 k w 6. re = open ro = open t a = 25 c p in = -20 dbm v cc1 = 3.0 v v cc2 = 3.0 v division ratio = 1/8 ro = 200 w upb587g output level vs. frequency and re output level (vpp) 0 500 1000 1500 0 0.5 1.0 3.5v 3.0v 2.5v 2.0v t a = 25 c p in = -20 dbm v cc1 = v cc2 division ratio = 1/8 re = 3.3 k w ro = 200 w upb587g output level vs. frequency & supply voltage input frequency (mhz) input frequency (mhz) output level (vpp) t a = +75?c +25?c -20?c +10 0 -10 -20 -30 -40 -50 -60 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 guaranteed operating window frequency response (divide-by-8 @ v cc = 2.2 v) input power, p in (dbm +10 0 -10 -20 -30 -40 -50 -60 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 v cc = 2.2 v 3.0 v 3.5 v guaranteed operating window frequency, f (ghz) input power, p in (dbm) frequency, f (ghz) t a = 25 c p in = -20 dbm v cc1 = 3.0 v v cc2 = 3.0 v re = 3.3 k w ro = 200 w 10 100 1k 10k 100k -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 divide by eight mode ssb phase noise vs. offset from carrier f in - 1 ghz, t a = 25 c ssb phase noise (dbc/hz) offset from carrier (hz)
upb587b, upb587g upb587b input and output s-parameters v cc = 3.5 v, i cc = 5.5 ma, z s = z l = 50 w divide-by-2 mode equivalent circuit frequency s 11 (mhz) mag ang 100 0.039 -106 200 0.052 -109 300 0.069 -112 400 0.087 -115 500 0.103 -118 divide-by-4 mode 100 0.039 -106 200 0.052 -109 300 0.069 -112 400 0.086 -115 500 0.102 -118 600 0.119 -120 700 0.135 -123 800 0.150 -126 divide-by-8 mode 100 0.039 -106 200 0.052 -109 300 0.069 -112 400 0.086 -115 500 0.102 -118 600 0.119 -120 700 0.135 -123 800 0.150 -126 900 0.164 -128 1000 0.181 -130 frequency s 22 (ghz) mag ang 0.10 0.597 -1 0.20 0.619 -5 0.30 0.623 -8 0.40 0.634 -14 0.50 0.636 -19 0.10 0.606 -1 0.20 0.626 -2 0.30 0.644 -6 0.40 0.660 -12 0.50 0.665 -19 0.10 0.606 0 0.20 0.628 -2 0.30 0.644 -6 0.40 0.659 -13 0.50 0.662 -19 upb587g input and output s-parameters vcc = 3.5 v, icc = 5.5 ma, z s = z l = 50 w divide-by-two mode * frequency s 11 frequency s 22 (mhz) mag ang (ghz mag ang 100 0.049 -107 100 0.331 9 200 0.054 -114 200 0.451 22 300 0.066 -113 300 0.480 16 400 0.079 -112 400 0.517 15 500 0.092 -111 500 0.548 13 divide-by-four mode * 100 0.049 -107 100 0.377 7 200 0.055 -111 200 0.410 23 300 0.066 -112 300 0.508 22 400 0.080 -111 400 0.565 17 500 0.092 -110 500 0.599 13 600 0.106 -109 700 0.117 -108 800 0.130 -106 divide-by-eight mode * 100 0.049 -107 100 0.392 9 200 0.054 -113 200 0.433 21 300 0.066 -112 300 0.518 19 400 0.078 -111 400 0.569 15 500 0.091 -110 500 0.597 11 600 0.105 -109 700 0.117 -108 800 0.128 -106 900 0.143 -105 1000 0.155 -103 * these parameters were taken with the oscillation suppression 50 w resistor on the input line. v cc1 gnd input v cc2 output m2 m1 bypass
upb587b, upb587g outline dimensions (units in mm) pin connection 1. v cc 1 2. input 3. bypass 4. gnd 5. m1 6. m2 7. output 8. v cc2 8 7 6 5.70 max 5 1 2 3 4 n 1.49 1.8 max 0.1 0.1 0.40 +0.10 -0.05 0.94 max 0.15 +0.10 -0.05 6.5 0.3 4.4 1.1 0.6 0.2 1.27 upb587g package outline g08 7.00.5 2.6 4.40.2 10.40.5 1.7 max 1.27 0.1 1.27 0.1 1.27 0.1 8 7 6 5 1 2 3 4 0.4 5.00.2 0.2 +0.05 -0.02 pin connection 1. v cc1 2. input 3. bypass 4. gnd 5. m1 6. m2 7. output 8. v cc2 upb587b package outline bf08 note: 1. control voltages: vm vm pin 5 or 6 pin 5 or 6 r without external resistor with external resistor (r = 300 k w ) part number qty UPB587G-E1 2500/reel ordering information pin description division ratio control 1 m1 m2 division ratio l l 1/8 l h 1/4 h h 1/2 pin no. symbol description 1v cc1 power supply pin of input amplifier and divider 2 input signal input pin 3 bypass input bypass pin, shall be connected to ground through bypass capacitor 4 gnd ground pin 5m1 6m2 7 output output pin 8v cc2 power supply of output buffer 587 xxx xxx = lot/date code min max high v cc - 0.2 v v cc + 0.5 vm low 0 v v cc - 0.3 min max high v cc v cc + 1.1 v vm low 0 v v cc - 0.5 exclusive north american agent for rf, microwave & optoelectronic semiconductors california eastern laboratories ?headquarters ?4590 patrick henry drive ?santa clara, ca 95054-1817 ?(408) 988-3500 ?telex 34-6393 ?fax (408) 988-0279 24-hour fax-on-demand: 800-390-3232 (u.s. and canada only) ?internet: http://www.cel.com printed in usa on recycled paper -3/97 data subject to change without notice
|
