The OPA838 decompensated voltage feedback operational amplifier provides a high 300-MHz gain bandwidth product with 1.8-nV/√Hz input noise voltage, requiring only a trimmed 0.95-mA supply current. These features combine to provide an extremely power-efficient solution for photodiode transimpedance designs and high-voltage gain stages, which require the lowest input voltage noise in signal receiver applications.
Operating at the minimum recommended noninverting gain of 6 V/V results in a 90-MHz, –3-dB bandwidth. Extremely low input noise and offset voltage make the OPA838 particularly suitable for high gains. Even at a DC-coupled gain of 1000 V/V, a 300-kHz signal bandwidth is available with a maximum output offset voltage of ±125 mV.
The single-channel OPA838 is available in 6-pin SOT-23 and SC70 packages with a power shutdown feature and a 5-pin SC70 package.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | OPA838 1-mA, 300-MHz Gain Bandwidth, Voltage-Feedback Op Amp datasheet (Rev. B) | PDF | HTML | 10 Oct 2018 |
| Technical article | 3 common questions when designing with high-speed amplifiers | 17 Jul 2020 | ||
| Application note | Higher accuracy using an external amplifier in ultrasonic flow measurement | 05 Feb 2019 | ||
| Application note | Noise Analysis for High Speed Op Amps (Rev. A) | 17 Jan 2005 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | Download |
|---|---|---|
| SOT-23 (DBV) | 6 | View options |
| SOT-SC70 (DCK) | 5 | View options |
| SOT-SC70 (DCK) | 6 | View options |
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