The OPA820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 6.8-mA supply current. The OPA820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±3.5 mV and an offset current of ±700 nA give excellent absolute DC precision for pulse amplifier applications.
Minimal input and output voltage swing headroom allow the OPA820 to operate on a single 5-V supply with > 2VPP output swing. While not a rail-to-rail (RR) output, this swing will support most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.
The OPA820 is characterized for operation from –55°C to 210°C.
| Status | ACTIVE |
| Architecture | Bipolar^Voltage FB |
| Number of channels | 1 |
| Total Supply Voltage | 12 |
| BW @ Acl | 800 |
| Acl, min spec gain | 1 |
| Slew Rate | 240 |
| Vn at flatband | 2.5 |
| Vn at 1 kHz | 2.5 |
| Iq per channel | 5.6 |
| Vos (offset voltage @ 25 C) | 3.5 |
| Rail-to-rail | No |
| Features | N/A |
| Rating | High Temp |
| Operating temperature range | -55 to 210 |
| Package Group | |
| Approx. price | |
| Package size: mm2:W x L (PKG) | See datasheet |
| CMRR | 85 |
| Input bias current | 16000000 |
| Offset drift | 7 |
| GBW | 800 |
| Output current | 110 |
| 2nd harmonic | 85 |
| 3rd harmonic | 95 |
| @ MHz | 1 |
| Radiation, TID | |
| Radiation, SEL |