Texas Instruments microPOWER™ series, OPA2251PA, General Purpose Amplifier, 2 Circuit, Rail-to-Rail, 8-DIP (0.300", 7.62mm), Through Hole, -40°C ~ 85°C.
| Parameter | Value |
|---|---|
| Series | microPOWER™ |
| Output type | Rail-to-Rail |
| Mounting | Through Hole |
| Amplifier type | General Purpose |
| Voltage - input offset | 100 µV |
| Voltage - supply span | 2.7 V |
| Current - supply | 27µA (x2 Channels) |
| Current - input bias | 20 nA |
| Current - output (Channel) | 50 mA |
| Operating temperature | -40°C ~ 85°C |
| Gain bandwidth product | 35 kHz |
| Package | Tube |
| Slew rate | 0.01V/µs |
| Case | 8-DIP (0.300\", 7.62mm) |
| Number of circuits | 2 |
The 8-DIP through-hole package is a legacy footprint — still common in industrial control cards, test equipment, and one-off prototypes where hand-assembly or socketing is preferred.
Input bias current is 20 nA typical — high enough that you should balance source impedance if you are working with megohm-range sensor bridges, but fine for most divider and filter networks.
The OPA2251PA has a gain-bandwidth product of 35 kHz and a slew rate of 0.01 V/µs, making it suitable for low-frequency signal conditioning such as sensor amplification and battery monitoring.