View TAT7457_5373623.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

TAT7457 catv 75 ? phemt adjustable gain rf amplifier applications ? single-ended and push-pull optical receivers ? low-noise drop amplifiers ? distribution amplifiers ? multi-dwelling units ? single-ended gain block sot-89 package product features functional block diagram ? gain, return loss and bias externally adjustable ? on-chip active bias for consistent bias current and repeatable performance ? dc ? 2000 mhz bandwidth ? low noise: typical nf < 2 db to 1000mhz ? flexible 5 v to 8 v biasing ? i dd (5v) = 120 ma typical in application circuit ? 19 db typical gain in application circuit ? +40 dbm typical oip3 ? +61 dbm typical oip2 ? +21 dbm typical p1db ? low distortion: cso -66 dbc, ctb -78 dbc (10 dbmv/ch at input, 80 ch ntsc flat) ? phemt device technology ? sot-89 package general description pin configuration the TAT7457 is a low cost rf amplifier designed fo r applications from dc to 2000 mhz. the balance of low noise and distortion provides an ideal solution for a wide range of broadband amplifiers used in cable television applications such as optical receivers and low noise fron t ends. the TAT7457 has features allowing a great deal of design- in flexibility. gain and return loss are adjustable with an external feedback resistor. an internal bias circuit mitigates the effect of temp erature and process variation and an external resistor may be used to adjust the bias current to optimize distortion or noise performance. there are no on-chip capacitors limiting the low freq response which extends down to dc. the TAT7457 is fabricated using 6-inch gaas phemt technology to optimize performance and cost. it provides excellent gain and return loss consistency inherent to the phemt process. pin # symbol 1 rf in 2 gnd 3 rf out 4 gnd paddle ordering information part no. description TAT7457 75 ? high linearity phemt amplifier (lead-free/rohs compliant sot-89 pkg) TAT7457-eb amplifier evaluation board standard t/r size = 1000 pieces on a 7? reel. rf in gnd rfout external feedback resistor allowing gain and return loss adjustment preliminary data sheet: rev d 09/14/11 - 1 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier preliminary data sheet: rev d 09/14/11 - 2 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? specifications absolute maximum ratings parameter rating storage temperature -65 to +150 o c device voltage + 10 v thermal resistance (jnc. to case) ? jc 38 o c/w operation of this device outsi de the parameter ranges given above may cause permanent damage. recommended operating conditions parameter min typ max units v cc 5 8 v i cc 120 ma t j (for >10 6 hours mttf) 150 o c electrical specifi cations are measured at sp ecified test conditions. specifications are not guaranteed over all recommended operating conditions. electrical specifications test conditions unless ot herwise noted: 25oc case temp, +5v vsupply, dc to 1200 mhz, 1 k ? feedback resistor parameter conditions min typical max units operational frequency range dc 1200 mhz gain 19 db gain flatness +/- 0.7 db noise figure at 1 ghz 2.0 db input return loss 18 db output return loss 18 db output p1db +21 dbm output ip3 see note 1. +40 dbm output ip2 see note 1. +61 dbm cso see note 2. -66 dbc ctb see note 2. -78 dbc idd 120 ma thermal resistance (jnc. to case) ? jc 38 o c/w notes: 1. at -17 dbm/tone at input. 2. 10 dbmv/ch at input, 80 ch flat ntsc 3. electrical specif ications are meas ured at specified test conditions. 4. specifications are not guaranteed over all recommended operating conditions. www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier reference design dc-1200 mhz ? c6 c5 l4 c4 l3 r2 c3 r1 c1 c2 l1 l2 r3 r4 r5 1 2 3 u1 1 1 1 +5v in out notes: bill of material ref des value description manufacturer part number u1 amplifier, sot-89 triquint TAT7457 r1 1 k? thick film res., 0402, 1% various r2 0 ? thick film res., 1206 various r3 n/l r4 0 ? thick film res., 0402 various r5 75 k ? thick film res., 0402, 1% various c1, c2 0.01 uf ceramic cap, 0603, x7r, 16v, 10% various c3, c4 0.01 uf ceramic cap, 0402, x7r, 16v, 10% various c5, c6 0.1 uf ceramic cap, 0603, x7r, 16v, 10% various l1, l2 4.7 nh ceramic wire-wound ind, 0402, 5% various l3 880 nh ferrite ind., vertical wire-wound, 1206, 10% various l4 910 nh ferrite ind., vertical wire-wound, 1008, 10% various 1. see pc board layout, page 9 for more information preliminary data sheet: rev d 09/14/11 - 3 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier application board typical performance for dc - 1200 mhz, 5 v application case temperature noted on graphs. reference design used. vsupply = 5 v, idd = 120 ma. 15 16 17 18 19 20 21 22 23 24 25 0 325 650 975 1300 s21 (db) freq (mhz) gain -40 -35 -30 -25 -20 -15 -10 -5 0 0 325 650 975 1300 s11 (db) freq (mhz) input return loss +85 c +85 c +25 c -40 c +25 c ? 40 c \ 100 \ 95 \ 90 \ 85 \ 80 \ 75 \ 70 \ 65 \ 60 \ 55 \ 50 0 100 200 300 400 500 600 cso & ctb (dbc) freq (mhz) cso & ctb 80 ch ntsc @ +10 dbmv/ch flat input ctb -40 0 c ctb +25 0 c -40 -35 -30 -25 -20 -15 -10 -5 0 0 325 650 975 1300 s22 (db) freq (mhz) output return loss cs o +85 0 c preliminary data sheet: rev d 09/14/11 - 4 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? ct b +85 0 c cso -40 0 c +85 c cso +25 0 c +25 c \ 40 c 0.0 0.8 1.6 2.4 3.2 4.0 0 325 650 975 1300 nf (db) freq (mhz) noise figure +85 c +25 c ? 40 c www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier application board typical performance for dc - 1200 mhz, 8 v application case temperature noted on graphs. reference design used. vsupply = 8 v; idd = 140 ma at 25 o c. idd adjusted with an external supply, similar to adjusting r3 and r5. contact sjcapplications.engineering@tqs.com for more information. 15 16 17 18 19 20 21 22 23 24 25 0 325 650 975 1300 s21 (db) freq (mhz) gain -40 0 c +25 0 c \ 40 \ 35 \ 30 \ 25 \ 20 \ 15 \ 10 \ 5 0 0 325 650 975 1300 s11 (db) freq (mhz) input return loss -40 0 c +8 5 0 c +8 5 0 c +25 0 c preliminary data sheet: rev d 09/14/11 - 5 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? -40 0 c +25 0 c +8 5 0 c \ 100 \ 95 \ 90 \ 85 \ 80 \ 75 \ 70 \ 65 \ 60 \ 55 \ 50 0 100 200 300 400 500 600 cso & ctb (dbc) freq (mhz) cso & ctb 80 ch ntsc @ +10 dbmv/ch flat input ctb -40 0 c ctb +25 0 c \ 40 \ 35 \ 30 \ 25 \ 20 \ 15 \ 10 \ 5 0 0 325 650 975 1300 s22 (db) freq (mhz) output return loss -40 0 c +25 0 c ct b +85 0 c cso -40 0 c cso +25 c 0 cs o +85 0 c +8 5 0 c 0 1 2 3 4 5 6 0 325 650 975 1300 nf (db) freq (mhz) noise figure -40 0 c +25 0 c +85 0 c www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier reference design 2.0 ghz satellite notes: bill of material ref des value description manufacturer part number u1 amplifier, sot-89 triquint TAT7457 r1 750 ? thick film res., 0402, 1% various r5 75 k ? thick film res., 0402, 1% various c1, c2 0.01 uf ceramic cap, 0603, x7r, 16v, 10% various c3 560 pf ceramic cap, 0402, x7r, 16v, 10% various c4 0.01 uf ceramic cap, 0402, x7r, 16v, 10% various cin 0.5 pf ceramic cap, 0603, .1 pf various l1 2.7 nh ceramic wire-wound ind, 0402, 5% various l2 2.0 nh ceramic wire-wound ind, 0402, 5% various l3 880 uh ferrite ind., vertical wire-wound, 1206, 10% various 2. see pc board layout, page 9 for more information preliminary data sheet: rev d 09/14/11 - 6 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier application board typical performance for satellite application reference design for 2.0 ghz satellite used. vsupply = 5 v, 25 o c ambient temperature. 13 14 15 16 17 18 19 20 21 22 23 0 600 1200 1800 2400 s21 (db) freq (mhz) gain \ 40 \ 35 \ 30 \ 25 \ 20 \ 15 \ 10 \ 5 0 0 600 1200 1800 2400 s11 (db) freq (mhz) input return loss \ 100 \ 95 \ 90 \ 85 \ 80 \ 75 \ 70 \ 65 \ 60 \ 55 \ 50 0 100 200 300 400 500 600 cso & ctb (dbc) freq (mhz) cso & ctb 80 ch ntsc @ +8 dbmv/ch flat input \ 40 \ 35 \ 30 \ 25 \ 20 \ 15 \ 10 \ 5 0 0 600 1200 1800 2400 s22 (db) freq (mhz) output return loss cso ctb 0.0 0.8 1.6 2.4 3.2 4.0 0 600 1200 1800 2400 nf (db) freq (mhz) noise figure preliminary data sheet: rev d 09/14/11 - 7 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier detailed device description the TAT7457 was designed to be a low cost general purpose amplifier suitable for a wide range of applications. the TAT7457 is a high gain cascode amplifier with no internal shunt feedback. an on-chip biasing network sets the operating conditions for the fets. this network stabilizes bias current against ch anges in temperature as well as against the normal process variations expected from wafer to wafer. stabilized bias current will lead to more consistent rf performance. 1 2 3 1 2 3 bias network large cascode rfic schematic simplified 1 2 3 cu stomers may set the gain and return loss of their amplifier by selecting an appropriate external feedback resistor. reducing the value of the feedback resistor will reduce the gain and lower the input and output impedances. low noise tia designers may set the value of feedback to a high value (>1k ohm) for best performance. biasing through tat 7457 feedback resistor 0.1uf application schematic fig. 1 vna bias tee 1 0246 frequency (ghz) TAT7457 open loop gain in 75 ohms 0 5 10 15 20 25 30 s21 (db) -30 -25 -20 -15 -10 -5 0 return losses (db) db(|s(2,1)|) (l) no feedback db(|s(2,2)|) (r) no feedback db(|s(1,1)|) (r) no feedback 5v, 105ma there are no on-chip capacitors that limit the low frequency response, enabling the TAT7457 frequency response to extend to dc. the open loop gain (no external feedback) and high frequency gain performance is shown in the plot to the left. preliminary data sheet: rev d 09/14/11 - 8 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier biasing options for improved performance distortion and noise performance may be optimized with simple changes to the application circuit. noise performance may be improved by adding a large resistor r3 of approximately 20 k ? to ground. this resistor will reduce the bias current and improve noise. best distortion occurs on a 6v supply; however for improved distortion on a 5v supply, bias current may be increased by adding a large pull up resistor r5 of approximately 75 k ? in parallel with the feedback capacitor. applications information pc board layout core is .062? fr-4, ? r = 4.7. metal layers are 1-oz copper. the pad pattern shown has been developed and tested for optimized assembly at triquint semiconductor. the pcb land pattern has been developed to accommodate lead and package tolerances. since surface mount processes vary from company to company, careful process development is recommended. for further technical information, refer to http://www.triquint.com/TAT7457 preliminary data sheet: rev d 09/14/11 - 9 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier mechanical information package information and dimensions this package is lead-free/rohs-compliant. the plating material on the leads is 100 % matte tin. it is compatible with both lead-free (maximum 260 c reflow temperature) and lead (maximum 245 c reflow temperature) soldering processes. the TAT7457 will be marked with a ?TAT7457? designator and an alphanumeric lot code. mounting configuration preliminary data sheet: rev d 09/14/11 - 10 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? notes: 1. ground / thermal vias are critical for the proper performance of this device. vias should use a .35 mm (#80/.0135?) diameter d rill and have a final, plated thru diameter of .25 mm (.010?). 2. add as much copper as possible to inner and outer layers near the part to ensure optimal thermal performance. 3. rf trace width depends upon the pc board material and construction. 4. all dimensions are in millimeters (inches). angles are in degrees. www.datasheet.net/ datasheet pdf - http://www..co.kr/
TAT7457 catv 75 ? phemt adjustable gain rf amplifier product compliance information esd information esd rating: class tbd value: passes ? tbd v min. test: human body model (hbm) standard: jedec standard jesd22-a114 esd rating: class tbd value: passes ? tbd v min. test: charged device model (cdm) standard: jedec standard jesd22-c101 msl rating level 3 at +260 c convection reflow the part is rated moisture sensitivity level x at tbdc per jedec standard ipc/jedec j-std-020. solderability compatible with the latest version of j-std-020, lead free solder, 260 c. this part is compliant with eu 2002/95/ec rohs directive (restrictions on the use of certain hazardous substances in electrical and electronic equipment). contact information for the latest specifications, additional product information, worldwide sales and distribution locations, and information abou t triquint: web: www.triquint.com tel: +1.707.526.4498 email: info-sales@tqs.com fax: +1.503.526.1485 for technical questions and application information: email: sjcapplications.engineering@tqs.com important notice the information contained herein is believed to be reliable. triquint makes no warranties regarding the information contained herein. triquint assumes no responsibility or liability whatso ever for any of the information contained herein. triquint assumes no responsibility or liability whatsoever for the use of the information contained herein. the information contained herein is provided "as is, where is" and with all faults, and th e entire risk associated with such information is entirely with the user. all information contained herein is subject to change without notice. customers should obtain and verify the latest relevant information before placing orders for triquint products. the information contained herein or any use of such information does not grant, explicitly or implicitly, to any part y any patent rights, licenses, or any other intellectual prope rty rights, whether with regard to such information itself or anything described by such information. triquint products are not warranted or authorized for use as critical components in medical, life-saving, or life-sustaining applications, or other applications where a failure would reason ably be expected to cause severe personal injury or death. preliminary data sheet: rev d 09/14/11 - 11 of 11 - disclaimer: subject to change without notice ? 2011 triquint semiconductor, inc. con necting the digital world to the global network ? www.datasheet.net/ datasheet pdf - http://www..co.kr/

▲Up To Search▲

Price & Availability of TAT7457

	To Download TAT7457 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .