partlist.org

9090 - TR-909 Clone

Categories
SynthDIY:Drum Machine
Features
Schematics | PCB for sale
PSU
+/-15v

This is a clone of the famous Roland TR-909 drum machine.
This is an analog circuit except for the HiHat?, Crash and Ride which is 8bit samples stored in EPROM.

The clone uses available substitutes for the original transistors and opamps but several people build it with the original parts.
9090 TR-909
NPN BC549 2SC2603F
PNP BC559 2SA1115F
PNP Matched pair BC559 2SA798
Op Amp TL072 M5218P?

Be aware that the pin configuration is different for the transistors so using the originals requires crossing the legs of all the transistors.
Make sure you get the DIP-8 version of M5218P? (with the P suffix) and not the SIP-8.

You can use ZTX1051A? as replacement for the two 2SD1469 transistors.

PCB's and EPROM's with Hi-Hat, Crash and Ride data is available from Trevor Page at introspectiv.org.

Images
9090 - TR909 Clone
9090 - TR909 Clone
9090 - PC001
9090 - PC001
9090 - PC002
9090 - PC002
9090 - PC005
9090 - PC005
Partlist
Component Count Designators Note  
DIL-14
2
U68 U69
 
DIL-14
3
U62 U64 U65
 
Package_0006_DIL-16
3
U48 U58 U60
 
Package_0006_DIL-16
2
U27 U32
Try 74x4051 - for lower on resistance
DIL-14
1
U67
 
Package_0006_DIL-16
2
U54 U59
 
Package_0006_DIL-16
6
U37 U41 U43 U44 U51 U53
 
DIL-14
3
U61 U63 U66
Use 4011UB (Unbuffered)
DIL-14
4
U8 U14 U21 U26
Use 4069UB (Unbuffered)
DIL-8
1
U38
 
DIL-14
1
U39
Also use LM339, etc.
DIL-18
1
U46
w/MIDI firmware
DIL-28
3
U49 U55 U56
w/HiHat Crash Ride data
DIL-8
34
U1 U3 U4 U5 U6 U7 U9 U10 U11 U12 U13 U15 U16 U17 U18 U19 U20 U22 U23 U24 U25 U28 U29 U30 U33 U34 U35 U36 U40 U42 U45 U47 U50 U52
 
DIL-14
2
U2 U31
 
DIL-8
1
U57
 
TO-92
2
Q1 Q3
 
2
Q16 Q20
Low Vce(sat) transistor for snappy VCA
TO-92
57
Q4 Q7 Q8 Q9 Q12 Q15 Q17 Q19 Q21 Q22 Q23 Q25 Q26 Q27 Q29 Q30 Q31 Q32 Q33 Q34 Q35 Q37 Q39 Q40 Q41 Q42 Q43 Q44 Q45 Q46 Q48 Q49 Q51 Q52 Q53 Q54 Q55 Q56 Q57 Q59 Q61 Q63 Q64 Q67 Q69 Q70 Q71 Q72 Q74 Q75 Q76 Q81 Q83 Q84 Q85 Q89 Q91
 
TO-92
30
Q2 Q5 Q6 Q10 Q11 Q13 Q14 Q18 Q24 Q28 Q36 Q38 Q47 Q50 Q58 Q60 Q62 Q65 Q66 Q68 Q73 Q77 Q78 Q79 Q80 Q82 Q86 Q87 Q88 Q90
 
TO-220
1
REG1
 
TO-220
1
REG2
 
TO-220
1
REG3
 
DO-35
94
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D29 D30 D31 D32 D33 D34 D38 D39 D40 D41 D42 D44 D45 D46 D47 D48 D49 D50 D51 D53 D54 D55 D56 D57 D59 D60 D61 D62 D63 D64 D65 D66 D67 D68 D69 D70 D71 D72 D73 D74 D75 D76 D77 D79 D80 D81 D82 D83 D84 D85 D86 D87 D88 D89 D90 D91 D92 D93 D94 D95 D96 D97 D98 D99 D100 D101 D102 D103
 
DO-41
3
D28 D35 D43
 
DO-35
4
D17 D36 D58 D78
 
HC-49/US
1
XTAL1
 
1
BR1
 
Capacitors
Value Count Type LS Designators Note  
10p
1
Polystyrene
7.5
C36
 
33p
2
Ceramic
2.5
C147 C148
 
100p
7
Polystyrene
7.5
C9 C49 C51 C84 C150 C170 C171
 
220p
3
Polystyrene
7.5
C38 C123 C127
 
390p
3
Ceramic
7.5
C138 C158 C159
 
470p
4
Polystyrene
7.5
C41 C164 C168 C169
 
1n
16
Polyester/Mylar
7.5
C87 C98 C102 C105 C106 C107 C116 C125 C130 C140 C142 C144 C145 C154 C157 C173
 
1n2
2
Polyester/Mylar
7.5
C136 C137 C141
 
2n2
3
Polyester/Mylar
7.5
C21 C27 C28
 
2n7
3
Polyester/Mylar
7.5
C139 C151 C153
 
3n3
2
Polyester/Mylar
7.5
C8 C24
 
4n7
10
Polyester/Mylar
7.5
C12 C45 C62 C64 C65 C78 C108 C109 C119 C120
 
5n6
1
Polyester/Mylar
7.5
C94
 
6n8
4
Polyester/Mylar
7.5
C1 C29 C44 C75
 
8n2
1
Polyester/Mylar
7.5
C97
 
10n
22
Polyester/Mylar
7.5
C30 C31 C33 C54 C80 C111 C112 C114 C115 C152 C600 C601 C602 C603 C604 C605 C606 C607 C608 C609 C616 C617
C616 C617 mounted directly on output jacks
12n
1
Polyester/Mylar
7.5
C58
 
15n
2
Polyester/Mylar
7.5
C32 C96
 
18n
2
Polyester/Mylar
7.5
C79 C110
 
22n
4
Polyester/Mylar
7.5
C26 C57 C91 C126
 
27n
4
Ceramic
7.5
C72 C117 C118 C122
 
33n
4
Polyester/Mylar
7.5
C11 C15 C22 C50
 
47n
7
Polyester/Mylar
7.5
C39 C48 C70 C73 C89 C99 C113
 
56n
2
Polyester/Mylar
7.5
C46 C68
 
68n
1
Polyester/Mylar
7.5
C13
 
100n
7
Polyester/Mylar
7.5
C10 C43 C47 C69 C90 C124 C134
 
100n
6
Ceramic
7.5
C53 C56 C60 C71 C167 C161
 
150n
2
Polyester/Mylar
7.5
C77 C95
 
220n
1
Electrolytic
5
C55
 
330n
1
Electrolytic
5
C14
 
470n
11
Electrolytic
5
C2 C3 C40 C42 C74 C81 C92 C100 C121 C131 C135
 
680n
2
Electrolytic
5
C52 C59
or Tantalum
1u
4
Electrolytic
5
C4 C5 C18 C163
 
4u7
1
Electrolytic
5
C16
 
10u
37
Electrolytic
5
C6 C7 C17 C20 C23 C25 C34 C35 C61 C63 C66 C67 C82 C83 C85 C86 C88 C93 C101 C103 C104 C128 C129 C132 C133 C143 C146 C149 C155 C156 C160 C162 C165 C166 C172 C173 C174
 
47u
1
Electrolytic
5
C16
min 35V
2200u
2
Electrolytic
7.5
C19 C37
min 35V
Resistors
Value Count Type Designators Note  
22
3
5%
R410 R432 R449
 
47
17
5%
R23 R36 R75 R89 R114 R115 R133 R162 R172 R197 R230 R240 R242 R273 R309 R335 R402
 
100
10
5%
R101 R181 R188 R257 R264 R322 R329 R428 R434 R441
 
150
1
5%
R411
 
220
5
5%
R431 R444 R471 R472 R474
 
330
4
5%
R21 R307 R320 R380
 
680
2
5%
R367 R461
 
1k
30
5%
R11 R30 R32 R110 R132 R147 R152 R160 R211 R217 R227 R232 R285 R292 R298 R377 R389 R390 R451 R457 R600 R603 R606 R609 R612 R615 R618 R621 R624 R627
 
1k5
1
5%
R116
 
1k8
1
5%
R58
 
2k2
27
5%
R12 R52 R53 R64 R87 R112 R139 R141 R163 R201 R205 R231 R279 R300 R308 R338 R349 R351 R357 R421 R439 R440 R445 R460 R464 R630 R631
R630 R631 mounted directly on output jacks
2k7
2
5%
R364 R393
 
3k3
4
5%
R28 R106 R348 R391
 
3k9
1
5%
R459
 
4k7
22
5%
R7 R8 R18 R34 R54 R60 R74 R119 R170 R241 R289 R321 R339 R354 R371 R378 R392 R403 R405 R406 R407 R433
 
5k1
6
1%
R358 R500 R507 R512 R518 R524
The 1% resistors here form velocity DAC
5k6
13
5%
R373 R408 R409 R412 R413 R414 R416 R418 R419 R437 R438 R446 R447
 
6k8
5
5%
R65 R78 R470 R478 R483
 
8k2
4
5%
R607 R614 R623 R628
 
10k
83
5%
R17 R31 R37 R55 R59 R67 R86 R91 R94 R99 R104 R108 R109 R113 R118 R129 R131 R136 R145 R146 R149 R157 R165 R168 R171 R177 R180 R184 R187 R190 R194 R198 R209 R210 R213 R225 R228 R233 R236 R238 R245 R251 R255 R256 R260 R263 R265 R267 R274 R283 R284 R287 R296 R303 R305 R313 R316 R325 R328 R330 R334 R341 R353 R370 R387 R396 R400 R401 R415 R417 R422 R426 R427 R436 R442 R443 R463 R467 R473 R475 R476 R477 R479 R626 R632 R633
R632 R633 mounted directly on output jacks
10k
6
1%
R360 R525 R501 R506 R513 R519
The 1% resistors here form velocity DAC
12k
15
5%
R3 R345 R346 R347 R601 R602 R604 R605 R610 R611 R616 R617 R619 R620 R625
 
15k
6
5%
R372 R379 R608 R613 R622 R629
 
20k
6
1%
R362 R503 R508 R514 R521 R526
The 1% resistors here form velocity DAC
22k
46
5%
R1 R2 R4 R14 R15 R16 R26 R43 R51 R56 R72 R73 R98 R103 R117 R121 R122 R135 R185 R186 R195 R200 R224 R261 R262 R266 R272 R319 R326 R327 R337 R343 R352 R355 R383 R397 R398 R399 R435 R452 R453 R454 R455 R458 R468 R481
 
33k
4
5%
R22 R268 R388 R469
 
40k2
6
1%
R363 R504 R509 R516 R520 R527
The 1% resistors here form velocity DAC
47k
31
5%
R6 R10 R24 R35 R42 R63 R77 R81 R85 R92 R95 R151 R158 R175 R216 R220 R226 R249 R291 R297 R315 R342 R356 R366 R395 R420 R424 R429 R450 R456 R465
 
56k
3
5%
R161 R229 R299
 
68k
5
5%
R138 R204 R278 R381 R382
 
80k6
6
1%
R361 R505 R511 R517 R522 R529
The 1% resistors here form velocity DAC
82k
2
5%
R385 R404
 
100k
93
5%
R13 R19 R20 R25 R29 R33 R47 R48 R49 R50 R66 R9 R45 R46 R68 R69 R79 R80 R82 R83 R84 R88 R93 R100 R105 R107 R111 R123 R125 R126 R127 R130 R148 R153 R154 R155 R156 R159 R166 R174 R176 R178 R179 R182 R183 R189 R191 R192 R193 R212 R215 R218 R219 R221 R222 R223 R235 R237 R244 R246 R248 R250 R252 R253 R254 R258 R259 R269 R270 R271 R286 R288 R290 R293 R294 R295 R302 R311 R312 R314 R317 R318 R323 R324 R332 R333 R336 R375 R425 R462 R466 R480 R482
 
150k
2
5%
R27 R386
 
160k
6
1%
R359 R502 R510 R515 R523 R528
The 1% resistors here form velocity DAC
220k
18
5%
R71 R76 R90 R96 R97 R120 R142 R143 R173 R196 R206 R207 R247 R423 R280 R281 R331 R344
 
270k
1
5%
R448
 
330k
3
5%
R5 R44 R369
 
470k
20
5%
R38 R39 R40 R41 R57 R70 R134 R140 R144 R199 R202 R208 R277 R282 R304 R350 R365 R374 R394 R430
 
1m
21
5%
R61 R62 R102 R124 R128 R150 R164 R167 R169 R214 R234 R239 R243 R276 R301 R306 R310 R340 R368 R376 R384
 
2m2
3
5%
R137 R203 R275
 
10k
1
Trimpot
VR1
 
10k
10
Potmeter lin
VR6 VR8 VR9 VR11 VR13 VR16 VR19 VR28 VR30 VR31
 
47k
8
Potmeter lin
VR7 VR12 VR15 VR18 VR21 VR24 VR27 VR29
 
47k
1
Potmeter lin
VR32
Dual-gang
50k
1
Potmeter lin
VR23
 
100k
1
Potmeter log
VR3
 
100k
3
Potmeter lin
VR5 VR22 VR25
 
470k
4
Potmeter lin
VR10 VR14 VR17 VR20
 
1m
2
Potmeter log
VR4 VR26
 
470
1
Potmeter lin
VR2
 
IC sockets
Type Needed
DIL-8
DIL-8
36
DIL-14
DIL-14
16
Package_0006_DIL-16
DIL-16
13
DIL-18
DIL-18
1
DIL-28
DIL-28
3
 

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