1 semiconductors device description the zxfv201/203 are quad and triple, high speed amplifiers designed for video and other high speed applications. they feature low differential gain and phase performance. together with high output drive and slew rate capability, this brings high performance to video applications. the zxfv203 is ideal for rgb buffer applications, with the zxfv201 ideal for rgsb applications. features and benefits unity gain bandwidth 300mhz slew rate 400v/ s differential gain 0.01% differential phase 0.01 output current 40ma characterized up to 300pf load 5 volt supply supply current 7ma per amplifier 14 pin so package applications video gain stages cctv buffer video distribution rgb buffering home theatre fast adc signal input drive cable driving zxfv201, zxfv203 issue 3 - december 2003 quad and triple video amplifier part number container increment zxfv201n14ta reel 7? 500 zxfv201n14tc reel 13? 2500 ZXFV203N14ta reel 7? 500 ordering information connection diagram zxfv201 connection diagram zxfv203
absolute maximum ratings over operating free-air temperature (unless otherwise stated (1) supply voltage, v+ to v- -0.5v to +11v input voltage (v -in , v +in )* v - -0.5v to v + +0.5v differential input voltage, vid 3v inverting input current (i-in) (2) 5 ma output current, (continuous, t j < 110c) 60 ma internal power dissipation see power dissipation derating table operating free air temperature range, t a -40 to 85c storage temperature range -65c to +150c operating ambient junction temperature t jmax 150c notes: (1) stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this sp ecification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (2) at high closed loop gains and low gain setting resistors care must be taken if large input signals are applied to the device which cause the output stage to saturate for extended periods of time. (3) the power dissipation of the device when loaded must be designed to keep the device junction temperature below t jmax . *during power-up and power-down, these voltage ratings require that signals be applied only when the power supply is connected. esd: this device is sensitive to static discharge and proper handling precautions are required. zxfv201, zxfv203 semiconductors issue 3 - december 2003 2 parameter conditions test min typ max unit supply voltage v+ operating range 4.75 5 5.25 v supply voltage v- operating range -5.25 -5 -4.75 v supply current/per channel p 5.0 7.5 10 ma input common mode voltage range p 3v input offset voltage p 1 10 mv output offset voltage p 2 20 mv input bias current, non-inverting input p 5 10 a input resistance p 1.5 2 6.5 m output voltage swing i out = 40ma p 3v output drive current v in = 3v p 40 ma positive psrr v+ = 0.25 p4957 db negative psrr v- = 0.25 p4957 db bandwidth ?3db av= +1, vout = 200mv pk-pk c 300 mhz bandwidth ?0.1db av= +1, vout = 200mv pk-pk c 30 mhz slew rate av= +1 av=+2 av=+10 c 400 400 400 v/ s rise time v out = 1 v, 10% - 90% c 4.0 ns fall time v out = 1 v, 10% - 90% c 3.2 ns propagation delay v out = 2 v, 50% c 4.0 ns differential gain 3.58mhz (ntsc) and 4.43mhz (pal) dc = -714 to +714 mv, 280mvpp c 0.02 % differential phase c 0.02 deg electrical characteristics 5v power supplies, t amb = 25c unless otherwise stated. r f =1k ,r l = 150 ,c l = 10pf test ? p = production tested. c = characterised package theta-ja power rating at 25c so14 120c/w 1.04w
zxfv201, zxfv203 semiconductors issue 3 - december 2003 3 figure 2: pulse response, unity gain, 1v pk-pk, r f = 510 figure 1: typical video signal application circuit, gain = 2 (overall gain = 1 for 75 load)
applications information introduction a typical circuit application is shown in figure 1, above. this is suitable for 75 transmission line connections at both the input and the output and is useful for distribution of wide-band signals such as video via cables. the 75 reverse terminating resistor r4 gives the correct matching condition to a terminated video cable. the amplifier load is then 150 in parallel with the local feedback network. the wide bandwidth of this device necessitates some care in the layout of the printed circuit. a continuous ground plane is required under the device and its signal connection paths, to provide the shortest possible ground return paths for signals and power supply filtering. a double-sided or multi-layer pcb construction is required, with plated-through via holes providing closely spaced low-inductance connections from some components to the continuous ground plane. for the power supply filtering, low inductance surface mount capacitors are normally required. it has been found that very good rf decoupling is provided on each supply using a 1000pf npo size 0805 or smaller ceramic surface mount capacitor, closest to the device pin, with an adjacent 0.1uf x7r capacitor. other configurations are possible and it may be found that a single 0.01uf x7r capacitor on each supply gives good results. however this should be supported by larger decoupling capacitors elsewhere on the printed circuit board. values of 1 to 10f are recommended, particularly where the voltage regulators are located more than a few inches from the device. these larger capacitors are recommended to be solid tantalum electrolytic or ceramic types. note particularly that the inverting input of this current feedback type of amplifier is sensitive to small amounts of capacitance to ground which occur as part of the practical circuit board layout. this capacitance affects bandwidth, frequency response peaking and pulse overshoot. therefore to minimise this capacitance, the feedback components r2 and r3 of figure1 should be positioned as close as possible to the inverting input connection. the frequency response and pulse response will vary according to particular values of resistors and layout capacitance. the response can be tailored for the application to some extent by choice of the value of feedback resistor. figure 2 shows an oscilloscope display of the pulse response for a practical double sided printed circuit board where rf = 510 . zxfv201, zxfv203 semiconductors issue 3 - december 2003 4 figure 3: graphs of gain and phase vs frequncy (r l =150 )
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zxfv201, zxfv203 semiconductors 8 issue 3 - december 2003 europe zetex gmbh streitfeldstra?e 19 d-81673 mnchen germany telefon: (49) 89 45 49 49 0 fax: (49) 89 45 49 49 49 europe.sales@zetex.com americas zetex inc 700 veterans memorial hwy hauppauge, ny 11788 usa telephone: (1) 631 360 2222 fax: (1) 631 360 8222 usa.sales@zetex.com asia pacific zetex (asia) ltd 3701-04 metroplaza tower 1 hing fong road, kwai fong hong kong telephone: (852) 26100 611 fax: (852) 24250 494 asia.sales@zetex.com corporate headquaters zetex plc fields new road, chadderton oldham, ol9 8np united kingdom telephone (44) 161 622 4444 fax: (44) 161 622 4446 hq@zetex.com these offices are supported by agents and distributors in major countries world-wide. this publication is issued to provide outline information only which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. the company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service. for the latest product information, log on to www.zetex.com ? zetex plc 2003 package outline dim millimeters inches dim millimeters inches min max min max min max min max a 1.35 1.75 0.053 0.069 e 3.80 4.00 0.15 0.157 a1 0.10 0.25 0.004 0.01 h 5.80 6.20 0.228 0.244 b 0.33 0.51 0.013 0.020 l 0.40 1.27 0.016 0.05 c 0.19 0.25 0.008 0.010 0 8 0 8 d 8.55 8.75 0.337 0.344 - ---- e 1.27 bsc 0.05 bsc - ---- package dimensions
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