These are the parts required to fully populate the LNMP board. Some of these parts are optional; see the Part Selection Guide for more info.
I don’t give part numbers for resistors because generic resistors will work just fine in this circuit. See the Part Selection Guide for specific advice about choosing resistors.
Components are marked “Alt.” are alternatives for the immediately preceding component.
| Description | Qty | ID | Digi-Key | Newark | Mouser |
|---|---|---|---|---|---|
| Low-noise op-amp, AD797AN | 2 | IC1, IC2 | AD797AN | 05F7659 | – |
| Alt. low-noise op-amp, LT1028CN8 | 2 | IC1, IC2 | LT1028CN8 | – | – |
| Alt. low-noise op-amp, OPA228PA | 2 | IC1, IC2 | OPA228PA | 75C4663 | – |
| Alt. low-noise op-amp, NE5534P | 2 | IC1, IC2 | 296-7043-5 | 08F2511 | 595-NE5534P |
| CFB output stage op-amp, LT1206CT7 | 1 | IC3 | LT1206CT7 | – | – |
| Adjustable linear regulator, LM317 | 1 | IC4 | LM317TNS | 07B6423 | 512-LM317T |
| Charge controller chip, MC3334xP | 1 | IC5 | See part selection guide | ||
| Texas Instruments TLE2426CP ("rail splitter") | 1 | IC6 | 296-6548-5 | – | 595-TLE2426CP |
| Input filter cap, 330 µF/35 V | 1 | C1 | P10299 | – | – |
| Bypass cap, 0.1 µF, film | 7 | C2,5,9, C15 | BC1621 | – | 75-MKT1826410064 |
| Alt. bypass cap, 0.1 µF, ceramic | 7 | C2,5,9, C15 | 399-2155 | – | 581-SR215E104M |
| Reservoir/bypass cap, 1 µF/16 V+ tantalum | 7 | C3,6,10, C17 | 399-1429 | – | 80-T350A105K035 |
| Phase-lead filter cap, film, 1500pF | 1 | C4 | BC2185 | – | – |
| Alt. phase-lead filter cap, film, 2400pF | 1 | C4 | BC2195 | – | – |
| Filter cap, 6.8 µF/50 V | 2 | C7,8 | Order with board | ||
| Metalized polyester box cap, 0.01 µF | 2 | C11, C14 | BC1712 | – | 75-MKT1826310014 |
| Alt. ceramic radial cap, 0.01 µF | 2 | C11, C14 | 399-2121 | – | 581-SR211E103M |
| Output filter cap, 220 µF/16 V electrolytic | 1 | C12 | P11199 | – | – |
| Rail capacitor, 470 µF/16 V electrolytic | 1 | C16 | P10248 | – | – |
| Alt. rail capacitor, 330 µF/25 V | 1 | C16 | P10273 | – | – |
| Alt. rail capacitor, 220 µF/35 V | 1 | C16 | P10297 | – | – |
| Cermet multiturn trim pot, Bourns 3296W, 2K | 1 | R6 | 3296W-202 | 03F3879 | 652-3296W-1-202 |
| Alt. trim pot, BC CT-94W | 1 | R6 | CT94W202 | – | – |
| Alt. trim pot, Murata PV36W | 1 | R6 | 490-2284 | – | 81-PV36W202A01B00 |
| Alt. trim pot, Vishay-Spectrol Model 64 | 1 | R6 | – | 67F5828 | 594-64W202 |
| Generic diode | 4 | D1-4 | 1N4001GICT | 18C8911 | 583-1N4001 |
| LED, red diffused, 1.8V, 1-5 mA, 3mm | 2 | PLED, CLED | HLMP1700 | 90F5862 | 512-HLMP-1700 |
| Heat sink | 2 | n/a | HS107 | – | 532-577202B00 |
| DIP-8 IC socket, gold contacts | 4 | n/a | AE7313 | 04M0550 | 575-11043308 |
| Gain selector switch (mini SPDT toggle) | 1 | S1 | 360-1155 | 61F1245 | 612-100-A2311 |
| Alt. gain selector switch (36-pin header strip) | 1 | S1 | 929974-01-36 | – | 517-974-01-36 |
| Shorting block for above | 1 | n/a | S9002 | – | 517-951-00 |
| Power switch (mini SPDT toggle) | 1 | S2,S3 | 360-1155 | 61F1245 | 612-100-A2311 |
| 5.5/2.1mm DC power jack (metal body) | 1 | n/a | – | – | 163-1021 |
| Alt. DC power jack, isolated, locking | 1 | n/a | – | – | 163-1000 |
| Alt. DC power jack, metal body, closed-circuit | 1 | n/a | CP-5 | – | 163-4304 |
| BNC panel jack, isolated, high-quality | 2 | n/a | 501-1037 | – | 565-3778 |
| Alt. BNC jack, cheap | 2 | n/a | A24485 | – | 571-2269901 |
| 4×AAA battery holder, wire leads | 2 | BH | 2482K | – | 534-2482 |
| Alt. battery holder | 2 | BH | BC4AAAW | – | 12BH441 |
| 18V 0.5A+ switching regulated power supply | 1 | PS | T454-P5P | – | 418-TR1518 |
| Alt. power supply, 12V unregulated | 1 | PS | T507-P5P | – | 412-112104 |
|
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