asahi kasei [akd4250-a] evaluation board rev.2 for AK4250 a kd4250- a general description akd4250-a is an evaluation board for quickly evaluati ng the AK4250vu, 1ch video amplifier with low pass filter (lpf). ? ordering guide akd4250-a --- evaluation board for AK4250 function ? easy to evaluate AK4250vu vi n AK4250vu vo u t vdd1 vss1 fi gure 1. akd4250-a b l ock di agram * c i rcui t di agram and pc b l a y out are at t ached at t h e end of t h i s m a nual . 2006/ 08 - 1 -
asahi kasei [akd4250-a] ? operation sequence 1) set up t h e power suppl y l i n es. [vdd1] (red) = 2.5v~3.6v [vss1] (black) = 0v 2) set up t h e jum p er pi ns. (r efer t h e next sect i on.) they shoul d be set a defaul t st at e. 3) turn on t h e power suppl y . AK4250vu i n cl udes a power-on-reset funct i on. therefore any reset i s not requi red upon power-up ext e rnal l y . ? jumper pins set up jum p er pi ns shoul d be set t h e defaul t st at e. 1) jp1(dvdd) : dvdd and avdd open : sep a rated . short: connected. 2) jp2(pdn) : sel ect i on for t h e pdn pi n of AK4250 open: pdn pi n i s open. dvdd: pdn pi n i s connect ed t o dvdd. 2006/ 08 - 2 -
asahi kasei [akd4250-a] 2006/ 08 - 3 - ? analog input/output circuits (1) input c i rcui t 2 3 1 j1 mr-552ls vin r2 75 c7 0.1u vin fi gure 2. vin i nput ci rcui t (2) output circuit r3 100k 2 3 1 j2 mr-552ls vout r4 75 vout figure 3. vout output circuit
asahi kasei [akd4250-a] measurement results 1. video plot data [mea s u rement condition] ? m e asu r emen t u n i t: tektr o n i x vm 700t video m e asu r emen t set ? power s u pply: vdd=3v ? temperature: room 1-1. s/n ? m easurem ent frequency : 100kh 6m hz fi gure 4. s/ n ( nois e s p ectrum ) 2006/ 08 - 4 -
asahi kasei [akd4250-a] 1-2. vecto r ? input si gnal : 75% col o r fi gure 5. 75% color vector 2006/ 08 - 5 -
asahi kasei [akd4250-a] revision history date ( yy/m m / d d ) m a nual r e vi si on bo ard r e vi si on r e a s o n c ont ent s 0 6 / 0 7 / 1 1 k m 0 8 3 3 0 2 1 fi rst edition devi ce r e v. changed AK4250: (r ev.b ? rev . d) 06/ 08/ 0 1 k m 0 8 3 3 0 3 2 measurem ent data changed m easurem ent data changed. (vid eo plo t data : s/n an d vecto r) important notice ? these products and their specifications are s ubject to change without notice. before considering any use or application, consult t he asahi kasei microsystems co., ltd. (akm) sales office or authorized distributor concerning their current status. ? akm assumes no liability for infringement of any patent, intellectual property, or other right in the application or use of any information contained herein. ? any export of these products, or devices or systems containing them, may require an export license or other official approval under the la w and regulations of the country of export pertaining to customs and tariffs, curr ency exchange, or strategic materials. ? akm products are neither intended nor authorized for use as critical components in any safety, life support, or other hazard related device or system, and akm assumes no responsibility relating to any such use, except with the ex pres s written c o ns ent of the repres entative director of akm. as used here: (a) a hazard related device or system is one designed or intended for life support or maintenance of safety or for applications in me dicine, aerospace, nuclear energy, or other fields, in which its failure to function or perfo rm may reasonably be expected to result in loss of life or in significant inju ry or damage to person or property. (b) a critical component is one whose failure to function or perform may reasonably be expected to result, whether directly or indirect ly, in the los s of the s a fety or effec t ivenes s of the device or system cont aining it, and which must therefore meet very high standards of performance and reliability. ? it is the responsibility of the buyer or distributor of an akm product who distributes, disposes of, or otherwise places the product with a third party to notify that party in advance of the above content and conditions, and the buyer or di stributor agrees to assume any and all responsibility and liability for and hold akm harmless from any and all claims arising from the use of said product in the absence of such notification. 2006/ 08 - 6 -
5 5 4 4 3 3 2 2 1 1 d d c c b b a a avdd avdd dvdd dvdd title size document number rev date: sheet of AK4250vu akd4250-a a 11 wednesday, february 15, 2006 title size document number rev date: sheet of AK4250vu akd4250-a a 11 wednesday, february 15, 2006 title size document number rev date: sheet of AK4250vu akd4250-a a 11 wednesday, february 15, 2006 vss vin vout open dvdd jp2 pdn jp2 pdn 1 vdd1 t45_r vdd1 t45_r cp 1 vdd 2 vin 3 pdn 4 vout 5 vss 6 vee 7 cn 8 u1 AK4250 u1 AK4250 r1 75 r1 75 jp1 dvdd jp1 dvdd c2 1u c2 1u r2 75 r2 75 2 3 1 j2 mr-552ls j2 mr-552ls r3 100k r3 100k 5 6 7 8 cn2 8pin_2 cn2 8pin_2 2 3 1 j1 mr-552ls j1 mr-552ls c5 1u c5 1u c6 0.1u c6 0.1u 1 2 3 4 cn1 8pin_1 cn1 8pin_1 1 2 + c1 47u + c1 47u c4 0.1u c4 0.1u 1 2 l1 (short) l1 (short) 1 vss1 t45_bk vss1 t45_bk 1 2 + c3 10u + c3 10u
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