OPA820-HT High Temp Unity-Gain Stable, Low Noise, Voltage-Feedback Operational Amplifier . | TI.com

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High Temp Unity-Gain Stable, Low Noise, Voltage-Feedback Operational Amplifier .



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.


  • High Bandwidth
    (240 MHz at 25°C and 100 MHz at 210°C, G = 2)
  • High Output Current
    (±110 mA at 25°C and 50 mA at 210°C)
  • Low Input Noise
    (2.5 nV/√Hz at 25°C and 4.5 nV/√Hzat 210°C)
  • Low Supply Current
    (5.6 mA at 25°C and 6.8 mA at 210°C)
  • Flexible Supply Voltage:
    • Dual ±2.5 V to ±5 V
    • Single +5 V


Compare all products in High-speed op amps (GBW>=50MHz) Email Download to Excel
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 Rating Operating temperature range (C) CMRR (Typ) (dB) Input bias current (Max) (pA) Offset drift (Typ) (uV/C) Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz
OPA820-HT Order now Voltage FB     1     5     12     800     800     1     240     2.5     2.5     5.6     3.5     No     High Temp     -55 to 210     85     16000000     7     110     85     95     1