The OPA820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 6.8-mA supply current. The OPA820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±3.5 mV and an offset current of ±700 nA give excellent absolute DC precision for pulse amplifier applications.
Minimal input and output voltage swing headroom allow the OPA820 to operate on a single 5-V supply with > 2VPP output swing. While not a rail-to-rail (RR) output, this swing will support most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.
The OPA820 is characterized for operation from 55°C to 210°C.
|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 1 kHz (Typ) (nV/rtHz)|
|Iq per channel (Typ) (mA)|
|Vos (offset voltage @ 25 C) (Max) (mV)|
|Operating temperature range (C)|
|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)|
|-55 to 210|