The OPA694 is an ultra-wideband, low-power, current feedback operational amplifier featuring high slew rate and low differential gain/phase errors. An improved output stage provides ±80mA output drive with < 1.5V output voltage headroom. Low supply current with > 500MHz bandwidth meets the requirements of high-density video routers. Being a current feedback design, the OPA694 holds its bandwidth to very high gains—at a gain of 10, the OPA694 will still provide 200MHz bandwidth.
RF applications can use the OPA694 as a low-power SAW pre-amplifier. Extremely high 3rd-order intercept is provided through 70MHz at much lower quiescent power than many typical RF amplifiers.
The OPA694 is available in an industry-standard pinout in both SO-8 and SOT23-5 packages.
| Architecture | Current FB |
| Number of channels | 1 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) | 7 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) | 12.6 |
| GBW (typ) (MHz) | 1500 |
| BW at Acl (MHz) | 1500 |
| Acl, min spec gain (V/V) | 1 |
| Slew rate (typ) (V/µs) | 1700 |
| Vn at flatband (typ) (nV√Hz) | 2.1 |
| Vn at 1 kHz (typ) (nV√Hz) | 2.1 |
| Iq per channel (typ) (mA) | 5.8 |
| Vos (offset voltage at 25°C) (max) (mV) | 3 |
| Rail-to-rail | No |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| CMRR (typ) (dB) | 60 |
| Input bias current (max) (pA) | 20000000 |
| Offset drift (typ) (µV/°C) | 15 |
| Iout (typ) (mA) | 80 |
| 2nd harmonic (dBc) | 68 |
| 3rd harmonic (dBc) | 72 |
| Frequency of harmonic distortion measurement (MHz) | 5 |
| SOIC (D) | 8 | 29.4 mm² 4.9 x 6 |
| SOT-23 (DBV) | 5 | 8.12 mm² 2.9 x 2.8 |
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