The OPA2846 provides two very low-noise, high gain bandwidth, voltage-feedback op amps in a single package. Operating from a low 12.6mA/channel quiescent current, each channel provides a 1.2nV/
Hz input voltage noise with a 1.65GHz gain bandwidth product. Minimum stable gain is specified at +7V/V while exceptional flatness is ensured at a gain of +10V/V.
The combination of low noise, high slew rate (600V/µs) and broad bandwidth allow very high SFDR differential receivers to be implemented. Additionally, decompensated, low-noise, voltage-feedback op amps are ideal for broadband transimpedance requirements. The dual channel OPA2846 provides matched channels for high-speed transimpedance requirements. With over 200MHz bandwidth at a gain of 20dB, excellent gain and phase matching are provided at IF frequencies for matched I and Q channel amplifiers.
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| Architecture | Voltage FB |
| Number of channels | 2 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) | 10 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) | 12 |
| GBW (typ) (MHz) | 1750 |
| BW at Acl (MHz) | 500 |
| Acl, min spec gain (V/V) | 7 |
| Slew rate (typ) (V/µs) | 625 |
| Vn at flatband (typ) (nV√Hz) | 1.2 |
| Vn at 1 kHz (typ) (nV√Hz) | 1.2 |
| Iq per channel (typ) (mA) | 12.6 |
| Vos (offset voltage at 25°C) (max) (mV) | 0.65 |
| Rail-to-rail | No |
| Features | Decompensated |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| CMRR (typ) (dB) | 110 |
| Input bias current (max) (pA) | 20000000 |
| Offset drift (typ) (µV/°C) | 1.6 |
| Iout (typ) (mA) | 80 |
| 2nd harmonic (dBc) | 76 |
| 3rd harmonic (dBc) | 109 |
| Frequency of harmonic distortion measurement (MHz) | 5 |
| SOIC (D) | 8 | 29.4 mm² 4.9 x 6 |