Difference between revisions of "POT2 BOM"
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− | + | |2 || CD1,CD3 || 399-3098-1-ND || 10u, 16V tant size-A (3216) || [http://www.digikey.com/scripts/DkSearch/dksus.dll?PName?Name=399-3098-1-ND DIG] || 0.24 || ALT : 493-2374-1-ND, C>=1.0u, V>=16V | |
− | |2 || CD1,CD3 || 399-3098-1-ND || 10u, 16V tant size-A (3216) || [http://www.digikey.com/scripts/DkSearch/dksus.dll?PName?Name=399-3098-1-ND DIG] || 0.24 || | ||
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− | |2 || CD2,CD4 || PCC1828CT-ND || 0.1u, 25V X7R EIA0805 multilayer ceramic || [http://www.digikey.com/scripts/DkSearch/dksus.dll?PName?Name=PCC1828CT-ND DIG] || 0.062 || | + | |2 || CD2,CD4 || PCC1828CT-ND || 0.1u, 25V X7R EIA0805 multilayer ceramic || [http://www.digikey.com/scripts/DkSearch/dksus.dll?PName?Name=PCC1828CT-ND DIG] || 0.062 || ALT : multilayer ceramic C>0.047u, C<0.22u |
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Revision as of 18:51, 25 June 2005
POT2 Bill of Materials
NUM | REFDES | Part# | Desc | Source | Price | Notes |
---|---|---|---|---|---|---|
1 | P1 | WM4201-ND | 3 pin, 0.1" molex header | DIG | 0.43 | mates with : WM2012-ND and requires pins WM2312-ND or WM1114-ND |
2 | RO1, RO3 | RHM20.0KCCT-ND | 20K 1% EIA0805 | DIG | 0.038 | Note : Adjust value to limit range of offset adjustment |
1 | CO1 | NA | do not populate | xx | Note : Cap from Offset to GND not good. | |
1 | RO2 | ST3A103CT-ND | 10K 3mm trimpot | DIG | 1.56 | ALT: TC73x-103ect-ND |
1 | UA1 | INA128UA-ND | Instrumentation amp, BurrBrown SOIC8 | DIG | 5.80 | gain = 1+50K/RA1 |
1 | RA1 | open (gain=1) | RES 1% EIA0805 | xx | gain=1+50K/RA1 | |
1 | RA2 | NA | do not populate | xx | Note : was part of RC filter, but DRV135 input impeedance is "small" | |
1 | CA1 | NA | do not populate | xx | Note : was part of RC filter, but without R, INA128 can't drive C | |
1 | UB1 | DRV135UA-ND | differential driver SOIC8 | DIG | 4.39 | |
1 | P2 | WM4203-ND | 5-pin 0.1" molex | DIG | 0.59 | mates with WM2014-ND and requires pins WM2312-ND or WM1114-ND |
2 | RR1,RR4 | RHM698CCT-ND | 698 ohm 1% 0805 resistor | DIG | 0.038 | NOTE : Adjust value to provide at least 3ma over total reference current |
1 | RR2 | RHM2.94KCCT-ND | 2.94k EIA0805 1% | DIG | 0.038 | Vref = 2.5V + 2.5*RR2/RR3 |
1 | RR3 | RHM1.00KCCT-ND | 1k EIA0805 1% | DIG | 0.038 | |
1 | UR1 | 296-10129-1-ND | TL1431 precision adjustable shunt reference in SOIC8 | DIG | 0.72 | |
1 | CR1 | 399-1563-1-ND | 10uF, 10V tant 3216 | DIG | 0.22 | NOTE : >6uF for reference stability, >Vref for cap protection |
2 | RL1, RL2 | RHM1.00KCCT-ND | 1k EIA0805 | DIG | 0.038 | NOTE : value depends on reference voltage, RLx = 0.5 * (Vref-4V) / 3mA |
2 | DL1,DL2 | P503CT-ND | gull wing SMT red LED | DIG | 0.33 | |
2 | CD1,CD3 | 399-3098-1-ND | 10u, 16V tant size-A (3216) | DIG | 0.24 | ALT : 493-2374-1-ND, C>=1.0u, V>=16V |
2 | CD2,CD4 | PCC1828CT-ND | 0.1u, 25V X7R EIA0805 multilayer ceramic | DIG | 0.062 | ALT : multilayer ceramic C>0.047u, C<0.22u |