| Architecture | Voltage FB |
| Number of channels (#) | 1 |
| Total supply voltage (Min) (+5V=5, +/-5V=10) | 5 |
| Total supply voltage (Max) (+5V=5, +/-5V=10) | 12 |
| GBW (Typ) (MHz) | 280 |
| BW @ Acl (MHz) | 800 |
| Acl, min spec gain (V/V) | 1 |
| Slew rate (Typ) (V/us) | 240 |
| Vn at flatband (Typ) (nV/rtHz) | 2.5 |
| Vn at 1 kHz (Typ) (nV/rtHz) | 2.5 |
| Iq per channel (Typ) (mA) | 5.6 |
| Vos (offset voltage @ 25 C) (Max) (mV) | 1.1 |
| Rail-to-rail | No |
| Rating | Catalog |
| Operating temperature range (C) | -40 to 85 |
| CMRR (Typ) (dB) | 85 |
| Input bias current (Max) (pA) | 16000000 |
| Offset drift (Typ) (uV/C) | 4 |
| Output current (Typ) (mA) | 110 |
| 2nd harmonic (dBc) | 85 |
| 3rd harmonic (dBc) | 95 |
| Frequency of harmonic distortion measurement (MHz) | 1 |
- High Bandwidth (240 MHz, G = 2)
- High-Output Current (±110 mA)
- Low-Input Noise (2.5 nV/√Hz)
- Low-Supply Current (5.6 mA)
- Flexible Supply Voltage:
- Dual ±2.5 V to ±6 V
- Single 5 V to 12 V
- Excellent DC Accuracy:
- Maximum 25°C Input Offset Voltage = ±750 μV
- Maximum 25°C Input Offset Current = ±400 nA
The OPA820 device provides a wideband, unity-gain stable, voltage-feedback amplifier with a very-low input-noise voltage and high-output current using a low 5.6-mA supply current. At unity-gain, the OPA820 device gives more than 800-MHz bandwidth with less than 1-dB peaking. The OPA820 device complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input-offset voltage of ±750 μV and an offset current of ±400 nA provide excellent absolute DC precision for pulse amplifier applications.
Minimal input and output voltage-swing headroom allow the OPA820 device to operate on a single 5-V supply with more than 2-VPP output swing. While not a rail-to-rail (RR) output, this swing supports most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.
Exceptionally low dG/dP (0.01% or 0.03°) supports low-cost composite-video line-driver applications. Existing designs can use the industry-standard pinout, 8-pin SOIC package while emerging high-density portable applications can use the 5-pin SOT-23. Offering the lowest thermal impedance of the industry in a SOT package, along with full specification over both the commercial and industrial temperature ranges, provides solid performance over a wide temperature range.
