Difference between revisions of "Differential Probe Assembly Sheet"
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| + | [[File:DiffProbe-BothSides-X2bw.png]] | ||
| + | |||
| + | * Reference designator near pin 1 in ICs | ||
== Parts List == | == Parts List == | ||
| Line 16: | Line 19: | ||
| | | | ||
| 3 | | 3 | ||
| − | | 10K | + | | 10K, 1% (0805) |
| R4,R7,R8 | | R4,R7,R8 | ||
|- | |- | ||
| 2 | | 2 | ||
| [https://www.analog.com/media/en/technical-documentation/data-sheets/626810f.pdf LTC6268S6] | | [https://www.analog.com/media/en/technical-documentation/data-sheets/626810f.pdf LTC6268S6] | ||
| + | [https://www.digikey.com/en/products/filter/linear-amplifiers-instrumentation-op-amps-buffer-amps/687?s=N4IgjCBcpgbFoDGUBmBDANgZwKYBoQB7KAbRABYAGAVnIGZqQBdAgBwBcoQBldgJwCWAOwDmIAL7iCAJlIgAMgBUAwrGmwAHM3FA Digikey] | ||
| + | [https://www.mouser.com/Semiconductors/Amplifier-ICs/Operational-Amplifiers-Op-Amps/_/N-4h00g?P=1z0z7v7&Keyword=LTC6268I&FS=True Mouser] | ||
| + | '''Note 1''' | ||
| U1,U2 | | U1,U2 | ||
| | | | ||
| 1 | | 1 | ||
| − | | 191K | + | | 191K, 1% (0805) |
| R9 | | R9 | ||
|- | |- | ||
| 4 | | 4 | ||
| − | | 10nF | + | | 10nF (0805) |
| C3-C5,C9 | | C3-C5,C9 | ||
| | | | ||
| 1 | | 1 | ||
| − | | 4.99K | + | | 4.99K, 1% (0805) |
| R6 | | R6 | ||
|- | |- | ||
| 1 | | 1 | ||
| − | | 10uF | + | | 10uF (1206) |
| C8 | | C8 | ||
| | | | ||
| 1 | | 1 | ||
| − | | 48.7 | + | | 48.7, 1% (0805) |
| R12 | | R12 | ||
|- | |- | ||
| 2 | | 2 | ||
| − | | 1uF | + | | 1uF (0805) |
| C6,C7 | | C6,C7 | ||
| | | | ||
| 2 | | 2 | ||
| − | | 49.9K | + | | 49.9K, 1% (0805) |
| + | '''Note 2''' | ||
| R1,R2 | | R1,R2 | ||
|- | |- | ||
| 2 | | 2 | ||
| − | | 2.2nF/1kV | + | | 2.2nF/1kV (1206) |
| C1,C2 | | C1,C2 | ||
| | | | ||
| 1 | | 1 | ||
| − | | LED | + | | LED (3mm) |
| D1 | | D1 | ||
|- | |- | ||
| 1 | | 1 | ||
| − | | 499 | + | | 499, 1% (0805) |
| R10 | | R10 | ||
| | | | ||
| 1 | | 1 | ||
| − | | BNC | + | | [https://www.mouser.com/ProductDetail/523-31-5431-10RFX BNC] |
| J2 | | J2 | ||
|- | |- | ||
| 1 | | 1 | ||
| − | | 54.9 | + | | 54.9, 1% (0805) |
| R11 | | R11 | ||
| | | | ||
| 2 | | 2 | ||
| − | | | + | | CONN, 1X2 |
| J1,J3 | | J1,J3 | ||
|- | |- | ||
| 2 | | 2 | ||
| − | | 549 | + | | 549, 1% (0805) |
| R3,R5 | | R3,R5 | ||
| | | | ||
| 1 | | 1 | ||
| − | | SPST | + | | SPST (0.1" pitch) |
| SW1 | | SW1 | ||
|- | |- | ||
| 1 | | 1 | ||
| − | | 75 | + | | 75, 1% (0805) |
| R13 | | R13 | ||
| | | | ||
| Line 92: | Line 99: | ||
|- | |- | ||
|} | |} | ||
| + | |||
| + | === Notes === | ||
| + | |||
| + | 1) The LTC6268S6 op amps come in various speed grades/costs. Package is SOT-23-6 Thin. | ||
| + | * [https://www.mouser.com/ProductDetail/Analog-Devices/LTC6268IS6-10TRMPBF?qs=oahfZPh6IAK%2Fgwt4Y8oAdg%3D%3D LTC6268IS6-10] part has 4 GHz Gain Bandwidth Product (Mouser $8.40 qty 1 - May 2021) | ||
| + | * [https://www.mouser.com/ProductDetail/Analog-Devices/LTC6268IS6TRMPBF?qs=hVkxg5c3xu%252BqAy0hl7mh3Q%3D%3D LTC6268IS6#TRMPBF] part has 500 MHz Gain Bandwidth Product (Mouser $8.35 qty 1 - May 2021) | ||
| + | * [https://www.mouser.com/ProductDetail/Analog-Devices/LTC6268HS6TRMPBF?qs=hVkxg5c3xu91%252BPaamVzhRQ%3D%3D TC6268HS6#TRMPBF] part has 500 MHz Gain Bandwidth Product (Mouser $9.48 qty 1 - May 2021) | ||
| + | * Second stage has 10 gain so expect card to have 1/10 the op amp bandwidth | ||
| + | 2) R1, R2 are input scale resistors | ||
Latest revision as of 13:03, 8 May 2021
- Reference designator near pin 1 in ICs
Parts List
| Qty | Value | RefDes | Qty | Value | RefDes | |
|---|---|---|---|---|---|---|
| 1 | LT1761 | U3 | 3 | 10K, 1% (0805) | R4,R7,R8 | |
| 2 | LTC6268S6
Digikey Mouser Note 1 |
U1,U2 | 1 | 191K, 1% (0805) | R9 | |
| 4 | 10nF (0805) | C3-C5,C9 | 1 | 4.99K, 1% (0805) | R6 | |
| 1 | 10uF (1206) | C8 | 1 | 48.7, 1% (0805) | R12 | |
| 2 | 1uF (0805) | C6,C7 | 2 | 49.9K, 1% (0805)
Note 2 |
R1,R2 | |
| 2 | 2.2nF/1kV (1206) | C1,C2 | 1 | LED (3mm) | D1 | |
| 1 | 499, 1% (0805) | R10 | 1 | BNC | J2 | |
| 1 | 54.9, 1% (0805) | R11 | 2 | CONN, 1X2 | J1,J3 | |
| 2 | 549, 1% (0805) | R3,R5 | 1 | SPST (0.1" pitch) | SW1 | |
| 1 | 75, 1% (0805) | R13 |
Notes
1) The LTC6268S6 op amps come in various speed grades/costs. Package is SOT-23-6 Thin.
- LTC6268IS6-10 part has 4 GHz Gain Bandwidth Product (Mouser $8.40 qty 1 - May 2021)
- LTC6268IS6#TRMPBF part has 500 MHz Gain Bandwidth Product (Mouser $8.35 qty 1 - May 2021)
- TC6268HS6#TRMPBF part has 500 MHz Gain Bandwidth Product (Mouser $9.48 qty 1 - May 2021)
- Second stage has 10 gain so expect card to have 1/10 the op amp bandwidth
2) R1, R2 are input scale resistors
