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数据: Wideband, Ultra Low-Noise, Voltage-Feedback Operational Amplifier with Shutdown 数据表
OPA847将极高的增益带宽和大信号性能与超低输入噪声电压相结合(0.85nV /√ Hz ),同时仅使用18mA电源电流。在节能至关重要的情况下,OPA847还包括一个可选的电源关闭引脚,当拉低时,禁用放大器并将电源电流降低至<上电值的1%。这个可选功能可以保持断开状态,以确保在不需要掉电时正常放大器工作。
极低输入电压和电流噪声的组合,以及3.9GHz增益带宽产品,使OPA847成为可能用于宽带互阻抗应用的理想放大器。作为电压增益级,OPA847针对+ 20V /V增益的平坦频率响应进行了优化,并且在低至+ 12V /V时可稳定下降。新的外部补偿技术使OPA847可用于任何反相增益,并具有出色的频率响应控制。在差分模数转换器(ADC)接口应用中使用这种技术,如下所示,可以提供最高动态范围接口之一。
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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 |
OPA847 | OPA842 | OPA843 | OPA846 |
---|---|---|---|
Bipolar Voltage FB | Bipolar Voltage FB | Bipolar Voltage FB | Bipolar Voltage FB |
1 | 1 | 1 | 1 |
10 | 7 | 8 | 10 |
12 | 12 | 12 | 12 |
600 | 350 | 500 | 500 |
12 | 1 | 3 | 7 |
950 | 400 | 1000 | 625 |
0.85 | 2.7 | 2 | 1.2 |
0.85 | 2.6 | 2 | 1.2 |
18.1 | 20.2 | 20.2 | 12.6 |
0.5 | 1.2 | 1.2 | 0.6 |
No | No | No | No |
Decompensated | N/A | 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) 6SOT-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) 5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) |
110 | 95 | 95 | 110 |
39000000 | 35000000 | 35000000 | 19000000 |
1.5 | 4 | 4 | 1.5 |
3900 | 350 | 1500 | 1750 |
75 | 100 | 100 | 80 |
74 | 80 | 76 | 76 |
100 | 97 | 102 | 109 |
5 | 5 | 5 | 5 |