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this is information on a product in full production. august 2012 doc id 15604 rev 4 1/23 23 RHF350 rad-hard 550 mhz low noise operational amplifier datasheet ? production data features bandwidth: 550 mhz (unity gain) quiescent current: 4 ma slew rate: 940 v/ s input noise: 1.5 nv/ hz distortion: sfdr = -66 dbc (10 mhz, 1v pp ) 2.8 v pp minimum output swing on 100 ? load for a +5 v supply 5 v power supply 300 krad mil-std-883 1019 eldrs free compliant sel immune at 125 c, let up to 110 mev.cm 2 /mg set characterized, let up to 110 mev.cm 2 /mg qmlv qualified available in ceramic flat-8s package applications communication satellites space data acquisition systems aerospace instrumentation nuclear and high energy physics harsh radiation environments adc drivers description the RHF350 device is a current feedback operational amplifier that uses very high speed complementary technology to provide a bandwidth of up to 550 mhz while drawing only 4 ma of quiescent current. with a slew rate of 940 v/s and an output stage optimized for driving a standard 100 ? load, this circuit is highly suitable for applications where speed and power- saving are the main requirements. the device is a single operator available in a flat-8 hermetic ceramic package, saving board space as well as providing excellent thermal and dynamic performance. pin connections (top view) the upper metallic lid is not electrically connected to any pin, nor to the ic die inside the package. ceramic flat-8s nc +vcc nc out -vcc nc in - in + 1 4 8 5 table 1. device summary (1) 1. contact st sales for information about the spec ific conditions for products in qml-q versions. reference smd quality level package lead finish mass eppl temperature range RHF350k1 - engineering model flat-8s gold 0.45 g - -55 c to +125 c RHF350k-01v 5962f0723201vxc qml-v model www.st.com
contents RHF350 2/23 doc id 15604 rev 4 contents 1 absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 power supply considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 single power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 noise measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.1 measurement of the input voltage noise en . . . . . . . . . . . . . . . . . . . . . . . 13 4.2 measurement of the negative input current noise inn . . . . . . . . . . . . . . . 13 4.3 measurement of the positive input current noise inp . . . . . . . . . . . . . . . . 13 5 intermodulation distortion product . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6 inverting amplifier biasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7 active filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 ceramic flat-8s package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 10 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 RHF350 absolute maximum ratings and operating conditions doc id 15604 rev 4 3/23 1 absolute maximum ratings and operating conditions table 2. absolute maximum ratings symbol parameter value unit v cc supply voltage (1) 1. all voltages values are measur ed with respect to the ground pin. 6v v id differential input voltage (2) 2. differential voltage are non-inverting input terminal with respect to the inverting input terminal. +/-0.5 v v in input voltage range (3) 3. the magnitude of input and output voltage must never exceed v cc +0.3 v. +/-2.5 v t stg storage temperature -65 to +150 c t j maximum junction temperature 150 c r thja flat-8 thermal resistance junction to ambient 50 c/w r thjc flat-8 thermal resistance junction to case 30 c/w p max flat-8 maximum power dissipation (4) (t amb = 25 c) for t j =150 c 4. short-circuits can cause excessive heating. destructiv e dissipation can result from short-circuits on all amplifiers. 830 mw esd hbm: human body model (5) pins 1, 4, 5, 6, 7 and 8 pins 2 and 3 5. human body model: a 100 pf capacit or is charged to the specified voltage, then discharged through a 1.5 k ? resistor between two pins of the device. this is done for all couples of connected pin combinations while the other pins are floating. 2 0.5 kv mm: machine model (6) pins 1, 4, 5, 6, 7 and 8 pins 2 and 3 6. this is a minimum value. machine model: a 200 pf capacitor is charged to t he specified voltage, then discharged directly between two pins of the device with no external se ries resistor (internal resistor < 5 ? ). this is done for all couples of connected pin combinations while the other pins are floating. 200 60 v cdm: charged device model (7) pins 1, 4, 5, 6, 7 and 8 pins 2 and 3 7. charged device model: all pins and package are c harged together to the specified voltage and then discharged directly to ground through only one pin. 1.5 1.5 kv latch-up immunity 200 ma table 3. recommended operating conditions symbol parameter value unit v cc supply voltage 4.5 to 5.5 v v icm common mode input voltage -v cc +1.5 v to +v cc -1.5 v v t a ambient temperature range -55 to +125 c electrical characteristics RHF350 4/23 doc id 15604 rev 4 2 electrical characteristics note: all electrical parameters apply both pre and post irradiation. post irradiation data are guaranteed by qualification, they are not tested in production. table 4. radiations value unit tid high dose rate (50 - 300 rad / sec.) up to 300 krad heavy-ions sel immunity (at 125 c) up to seu characterized up to 110 mev.cm2/mg table 5. electrical characteristics for v cc = 2.5 v, (unless otherwise specified) symbol parameter test conditions temp. (1) min. typ. max. unit dc performance v io input offset voltage +125 c -4 1 4 mv +25 c -4 0.4 4 -55 c -4 0.8 4 i ib+ non-inverting input bias current +125 c 8.5 35 a +25 c 9 35 -55 c 9 35 i ib- inverting input bias current +125 c 2.5 25 a +25 c 2 20 -55 c 1.8 25 cmr common mode rejection ratio 20 log ( ? v ic / ? v io ) ? v ic = 1 v +125 c 50 55 db +25 c 54 57 -55 c 50 58 svr supply voltage rejection ratio 20 log ( ? v cc / ? v io ) ? v cc = 3.5 v to 5 v +125 c 55 87 db +25 c 68 87 -55 c 55 88 psrr power supply rejection ratio 20 log ( ? v cc / ? v out ) ? v cc =200mv pp at 1 khz +25 c 51 db i cc supply current no load +125 c 3.8 4.9 ma +25 c 4 4.9 -55 c 4 4.9 RHF350 electrical characteristics doc id 15604 rev 4 5/23 dynamic performance and output characteristics r ol transimpedance ? v out = 1 v, r l = 100 ? +125 c 150 244 k ? +25 c 170 260 -55 c 150 276 bw small signal -3 db bandwidth r l = 100 ? , a v = +1 +25 c 550 mhz r l = 100 ? , a v = +2 +25 c 390 r l = 100 ? , a v = +10 +25 c 125 r l = 100 ? , a v = -2 +125 c 250 380 +25 c 250 425 -55 c 250 466 sr slew rate (2) v out = 2 v pp , a v = +2, r l = 100 ? +25 c 700 940 v/ s v oh high level output voltage r l = 100 ? +125 c 1.3 1.6 v +25 c 1.44 1.55 -55 c 1.3 1.5 v ol high level output voltage r l = 100 ? +125 c -1.6 -1.3 +25 c -1.55 -1.44 -55 c -1.5 -1.3 i sink output sink current output to gnd +125 c 135 210 ma +25 c 135 225 -55 c 135 225 i source output source current output to gnd +125 c -200 -140 +25 c -225 -140 -55 c -240 -140 1. t min < t amb < t max : worst case of the parameter on a standard sample across the temperature range. the evaluation is done on 50 units in the so-8 plastic package. 2. not physically tested. guaranteed by design, measured on bench. table 5. electrical characteristics for v cc = 2.5 v, (unless otherwise specified) (continued) symbol parameter test conditions temp. (1) min. typ. max. unit table 6. closed-loop gain and feedback components gain (v/v) + 1 - 1 + 2 - 2 + 10 - 10 r fb ( ? ) 820 300 300 300 300 300 electrical characteristics RHF350 6/23 doc id 15604 rev 4 figure 1. frequency response, positive gain figure 2. flatness, gain = +1 gain (db) figure 3. flatness, gain = +2 figure 4. flatness, gain = +4 figure 5. flatness, gain = +10 figure 6. slew rate -2 n s -1 n s 0 s 1 n s 2 n s 0.00 0.25 0.50 0.75 1.00 1.25 1.50 g a in = +2 v cc = +5 v lo a d = 100 output re s pon s e (v ) time (n s ) RHF350 electrical characteristics doc id 15604 rev 4 7/23 figure 7. i sink figure 8. i source figure 9. input current noise vs. frequency figure 10. input voltage noise vs. frequency ' a i n d " . o n i n v e r t i n g i n p u t i n s h o r t c i r c u i t 6 # # 6 figure 11. quiescent current vs. v cc figure 12. noise 0.0 0.5 1.0 1.5 2.0 2.5 -5 -4 - 3 -2 -1 0 1 2 3 4 5 g a in = +2 v cc = 5 v inp u t to gro u nd, no lo a d i cc (ma) i cc (+) i cc (-) v cc (v) v cc = 5 v electrical characteristics RHF350 8/23 doc id 15604 rev 4 figure 13. distortion vs. output amplitude figure 14. output amplitude vs. load ( $ ( $ ' a i n 6 # # 6 & |