The OPA656 device combines a very wideband, unity-gain stable, voltage-feedback operational amplifier with a FET-input stage to offer an ultra high dynamic-range amplifier for Analog-to-Digital Converter (ADC) buffering and transimpedance applications. Extremely low DC errors give good precision in optical applications.
The high unity-gain stable bandwidth and JFET input allows exceptional performance in high-speed, low-noise integrators.
The high input impedance and low bias current provided by the FET input is supported by the ultra-low 7-nV/√Hz input voltage noise to achieve a very low integrated noise in wideband photodiode transimpedance applications.
Broad transimpedance bandwidths are achievable given the OPA656 device’s high 230-MHz gain bandwidth product. As shown below, a –3-dB bandwidth of 1 MHz is provided even for a high 1-MΩ transimpedance gain from a 47-pF source capacitance.
Products containing the "OPA656" keyword are: OPA656 , OPA656MDREP , OPA656N , OPA656N/250 , OPA656N/250 , OPA656N/250G4 , OPA656N/250G4 , OPA656N/3KG4 , OPA656N250 , OPA656NB , OPA656NB/250 , OPA656NB/250 , OPA656NB/250G4 , OPA656NB/250G4 , OPA656NB250 , OPA656P , OPA656TDB1 , OPA656TDB1 , OPA656TDB2 , OPA656TDB2| Status | ACTIVE |
| Architecture | FET^Voltage FB |
| Number of channels | 1 |
| Total Supply Voltage | 12 |
| BW @ Acl | 500 |
| Acl, min spec gain | 1 |
| Slew Rate | 290 |
| Vn at flatband | 7 |
| Vn at 1 kHz | 10 |
| Iq per channel | 14 |
| Vos (offset voltage @ 25 C) | 0.6 |
| Rail-to-rail | No |
| Features | N/A |
| Rating | Catalog |
| Operating temperature range | -40 to 85 |
| Package Group | SOIC|8 |
| Approx. price | 4.73 | 1ku |
| Package size: mm2:W x L (PKG) | [pf]8SOIC[/pf]: 29 mm2: 6 x 4.9 (SOIC|8) |
| CMRR | 86 |
| Input bias current | 5 |
| Offset drift | 2 |
| GBW | 500 |
| Output current | 70 |
| 2nd harmonic | 71 |
| 3rd harmonic | 81 |
| @ MHz | 5 |
| Radiation, TID | |
| Radiation, SEL |