| Manufacturer | Part # | Datasheet | Description |
 Burr-Brown (TI) | OPA128LM |  138Kb/9P | Difet Electrometer-Grade OPERATIONAL AMPLIFIER |
 Burr-Brown (TI) | OPA128JM |  138Kb/9P | Difet Electrometer-Grade OPERATIONAL AMPLIFIER |
| OPA128KM |  138Kb/9P | Difet Electrometer-Grade OPERATIONAL AMPLIFIER |
| OPA128SM |  138Kb/9P | Difet Electrometer-Grade OPERATIONAL AMPLIFIER |
| OPA121 |  91Kb/6P | Low Cost Precision Difet OPERATIONAL AMPLIFIER |
 Burr-Brown (TI) | OPA121KM |  91Kb/6P | Low Cost Precision Difet OPERATIONAL AMPLIFIER |
 Burr-Brown (TI) | OPA121KP |  91Kb/6P | Low Cost Precision Difet OPERATIONAL AMPLIFIER |
 Burr-Brown (TI) | OPA121KU |  91Kb/6P | Low Cost Precision Difet OPERATIONAL AMPLIFIER |
 Burr-Brown (TI) | OPA124 |  137Kb/8P | Low Noise Precision Difet OPERATIONAL AMPLIFIER |