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数据： Wideband Low Distortion Unity-Gain Stable Voltage-Feedback Op Amp 数据表
OPA842提供了单片运算放大器以前无法达到的速度和动态范围。 OPA842采用具有两个内部增益级的单位增益稳定电压反馈架构，可在宽频率范围内实现极低的谐波失真。 经典差分输入提供精密运算放大器的所有常见优势，例如偏置电流消除和极低的反相电流噪声，与宽带电流差分增益/相位性能，低压噪声和高输出相比电流驱动使OPA842成为大多数高动态范围应用的理想选择。
单位增益稳定性使OPA842特别适用于低增益差分放大器，互阻抗放大器，+ 2视频线路驱动器增益，宽带集成器，和低失真模数转换器（ADC）缓冲器。如果需要更高的增益甚至更低的谐波失真，请考虑OPA843 ??更高的增益带宽和低噪声版本的OPA842。
| Architecture |
| Number of Channels (#) |
| Total Supply Voltage (Min) (+5V=5, +/-5V=10) |
| Total Supply Voltage (Max) (+5V=5, +/-5V=10) |
| BW @ Acl (MHz) |
| Acl, min spec gain (V/V) |
| Slew Rate (Typ) (V/us) |
| Vn at Flatband (Typ) (nV/rtHz) |
| Vn at 1kHz (Typ) (nV/rtHz) |
| Iq per channel (Typ) (mA) |
| Vos (Offset Voltage @ 25C) (Max) (mV) |
| Rail-to-Rail |
| Features |
| Rating |
| Operating Temperature Range (C) |
| Package Group |
| Package Size: mm2:W x L (PKG) |
| CMRR (Typ) (dB) |
| Input Bias Current (Max) (pA) |
| Offset Drift (Typ) (uV/C) |
| GBW (Typ) (MHz) |
| Output Current (Typ) (mA) |
| 2nd Harmonic (dBc) |
| 3rd Harmonic (dBc) |
| @ MHz |
| OPA842 | OPA843 | OPA846 | OPA847 |
|---|---|---|---|
| Bipolar Voltage FB | Bipolar Voltage FB | Bipolar Voltage FB | Bipolar Voltage FB |
| 1 | 1 | 1 | 1 |
| 7 | 8 | 10 | 10 |
| 12 | 12 | 12 | 12 |
| 350 | 500 | 500 | 600 |
| 1 | 3 | 7 | 12 |
| 400 | 1000 | 625 | 950 |
| 2.7 | 2 | 1.2 | 0.85 |
| 2.6 | 2 | 1.2 | 0.85 |
| 20.2 | 20.2 | 12.6 | 18.1 |
| 1.2 | 1.2 | 0.6 | 0.5 |
| No | No | No | No |
| N/A | Decompensated | Decompensated | Decompensated |
| Catalog | Catalog | Catalog | Catalog |
| -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| SOIC SOT-23 | SOIC SOT-23 | SOIC SOT-23 | SOIC SOT-23 |
| 8SOIC: 29 mm2: 6 x 4.9(SOIC) 5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 8SOIC: 29 mm2: 6 x 4.9(SOIC) 5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 8SOIC: 29 mm2: 6 x 4.9(SOIC) 5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 8SOIC: 29 mm2: 6 x 4.9(SOIC) 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) |
| 95 | 95 | 110 | 110 |
| 35000000 | 35000000 | 19000000 | 39000000 |
| 4 | 4 | 1.5 | 1.5 |
| 350 | 1500 | 1750 | 3900 |
| 100 | 100 | 80 | 75 |
| 80 | 76 | 76 | 74 |
| 97 | 102 | 109 | 100 |
| 5 | 5 | 5 | 5 |
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