POT4 Bill of Materials
From DIDEAS Wiki
POT4 Bill of Materials
| NUM | REFDES | Part# | Desc | Source | Price | Notes |
|---|---|---|---|---|---|---|
| 1 | PC1 | WM4203-ND | 5 pin, 0.1" molex header | DIG | ? | |
| 1 | CC3 | PCC1828CT-ND | 0.1u, 25V X7R EIA0805 multilayer ceramic | DIG | ? | optional - provides LP input filter |
| 1 | CC3 | ? | 1 meg EIA0805 | DIG | ? | optional - stack over CC3 to provide 0 input for no input connection |
| 2 | RC1,RC2 | P0.0ACT-ND | 0.0 ohm EIA0805 | DIG | ? | short inputs |
| 4 | CC1,2,4,5 | not populated | place 0.1u caps here for additional LP input filtering | |||
| 1 | JC1 | P15.0HCT | 15 ohm EIA0605 | DIG | ? | 3 way solder bead jumper - solder R between COM and SHIELD option |
| 1 | RA1 | 331-499FCT-ND (gain=100), open (gain=1) | EIA1206 resistor to set gain | DIG | ? | for INA128 gain = 1+50K/RA1 |
| 1 | UA1 | INA128UA | Instrumentation Amp SO8 package | DIG | ? | ALT : many - LT1167, INA122 (Vsup > 32) gain equation may be different |
| 1 | RO1 | 3266W-103-ND(POT), 3266W-503ND(bridge) | (burns3266w) multiturn trim pot | DIG | ? | 10K for POT, 50K for bridge |
| 1 | U1 | LM324 | quad opamp SO14 (narrow) package | DIG | ? | ALTs : quad opamp (Vsup > 32) |
| 1 | JF1 | S1012-36-ND | 36 pin 0.1" header pins (36) | DIG | ? | need 4 pins to make a 3 way jumper |
| 1 | JF1 | S9000-ND | 0.1" shorting jumper | DIG | ? | used to select amplifer filter path |
| 1st LP filter | ||||||
| 1 | RF1 | RHM13.3KCCT-ND | 13.3K 1% EIA0805 | DIG | ? | |
| 1 | RF2 | RHM13.3KCCT-ND | 13.3K 1% EIA0805 | DIG | ? | |
| 1 | RF3 | RHM6.65KCCT-ND | 6.65K 1% EIA0805 | DIG | ? | |
| 1 | CF1 | 490-1635-1-ND | 5.1nF EIA0805 | |||
| 1 | CF2 | 490-1644-1-ND | 22nF EIA0805 | |||
| 2nd LP filter | ||||||
| 1 | CF3 | 490-1632-1-ND | 3.3nF EIA0805 | DIG | ? | |
| 1 | CF4 | 490-1644-1-ND | 22nF EIA0805 | DIG | ? | |
| 1 | RF4 | RHM6.65KCCT-ND | 6.65K 1% EIA0805 | DIG | ? | |
| 1 | RF5 | RHM6.65KCCT-ND | 6.65K 1% EIA0805 | DIG | ? | |
| BW limited derivative | ||||||
| 1 | RD1 | 4.99M 1% EIA0805 | DIG | ? | ||
| 1 | RD2 | 3.0K 1% EIA0805 | DIG | ? | ||
| 1 | CD1 | 100pF EIA0805 | DIG | ? | ||
| 1 | CD2 | 0.1u EIA0805 | DIG | ? | ||
| differential position output | ||||||
| 2 | RB1,RB2 | P0.0ACT-ND | 0.0 ohm EIA0805 | DIG | ? | increase R for output RC filter by adding matched precision resistors here. Driver output is already 50 ohm. |
| 1 | CB1 | ? | 0.1uF | DIG | ? | use 25V or larger bipolar precision cap here to increase C in output RC filter. Total C is CB1 + CB2 |
| 1 | CB2 | 495-1087-ND | 1uF, 50V (bipolar) metalized poly cap | DIG | ? | output RC filter is CB1 + CB2 |
| 1 | UB1 | DRV135UA | differential driver in SO8 package | DIG | ? | |
| 1 | PN1 | WM4203-ND | 0.1" 5pin molex header | DIG | ? | mates with : |
| differential velocity output | ||||||
| 2 | RB3, RB4 | P0.0ACT-ND | 0.0 ohm | DIG | ? | see notes for RB1,RB2 |
| 1 | CB3 | 0.1uF | DIG | ? | ||
| 1 | CB4 | 495-1087-ND | 1uF, 50V (bipolar) metalized poly cap | DIG | ? | output RC filter is CB3 + CB4 |
| 1 | UB2 | DRV135UA | differential driver in SO8 package | DIG | ? | |
| 1 | PN2 | WM4203-ND | 0.1" 5pin molex header | DIG | ? | mates with : |
| precision (adjustable) voltage reference | ||||||
| 4 | RR1, RR4 | 1.60K 1/8watt EIA0805 | DIG | ? | pair of resistors stacked to increase power to 1/4watt | |
| 1 | RR2 | RHM7.32KCCT-ND | 7.32K 1% EIA0805 | DIG | ? | |
| 1 | RR3 | RHM2.49KCCT-ND | 2.49K 1% EIA0805 | DIG | ? | |
| 1 | UR1 | TL1431 | adjustable voltage reference in SO8 package | DIG | ? | |
| 1 | CR1 | 493-2374-1-ND | 6.8V, 16V tant (size A / 3216) | DIG | ? | > 6.8uF to avoid reference instability |
| power section | ||||||
| 2 | CE1,CE3 | 2.2uF 16V tant (Size A / 3216) | DIG | ? | require : C>1.0uF, V>=16V size A tant | |
| 2 | CE2, CE4 | 0.1uF EIA0805 25V | DIG | ? | require : 0.1u chip cap | |
| 2 | DL1,DL2 | P503-ND | red gull wing SMT 4.2mm LED | DIG | ? | P514-ND (green) for bridge board |
| 1 | SH1 | P0.0ACT-ND | 0.0 ohm | DIG | ? | GND to COM solder bead? |
| 2 | RN1, RN2 | RHM15.0FCT-ND | 15ohm EIA1206 1/4W | DIG | ? | requires < 20 ohm - reduces inrush current when board first powered and limited total current |
