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.
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|Part number||Order||Architecture||Number of channels (#)||Total supply voltage (Min) (+5V=5, +/-5V=10)||Total supply voltage (Max) (+5V=5, +/-5V=10)||GBW (Typ) (MHz)||BW @ Acl (MHz)||Acl, min spec gain (V/V)||Slew rate (Typ) (V/us)||Vn at flatband (Typ) (nV/rtHz)||Vn at 1 kHz (Typ) (nV/rtHz)||Iq per channel (Typ) (mA)||Vos (offset voltage @ 25 C) (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)||Output current (Typ) (mA)||2nd harmonic (dBc)||3rd harmonic (dBc)||@ MHz|
In to V-
|Catalog||-40 to 125||
SC70 | 5
SC70 | 6
SOT-23 | 6
5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)
6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)
6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)
In to V-
|Catalog||-40 to 125||VSSOP | 8||8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)||104||90000||1.2||20||131||146||0.01|
In to V-