OPA2810 - High Performance Low Cost Rail-to-Rail Input/Output HV FET Op Amps

The OPA2810 is a dual-channel, FET-input, voltage-feedback operational amplifier withlow input bias current. The OPA2810 is unity-gain stable with a small-signal unity-gain bandwidthof 105 MHz, and offers excellent DC precision and dynamic AC performance at a low quiescent current(I_Q) of 3.6 mA per channel (typical). The OPA2810 is fabricated on TexasInstrument’s proprietary, high-speed SiGe BiCMOS process and achieves significant performanceimprovements over comparable FET-input amplifiers at similar levels of quiescent power. With again-bandwidth product (GBWP) of 70 MHz, slew-rate of 192 V/µs, and voltage low-noise of 6nV/√Hz, the OPA2810 is well suited for use in a wide range of high fidelitydata acquisition and signal processing applications.

The OPA2810 is characterized to operate over a wide supply range of 4.75 V to 27 V, andfeatures rail-to-rail inputs and outputs. The OPA2810 amplifier delivers 75 mA of linear outputcurrent, suitable for driving optoelectronics components and analog-to-digital converter (ADC)inputs or buffering DAC outputs into heavy loads.

The OPA2810 is available in an 8-pin, SOT23-8 and VSSOP-8 package and is rated to workover the extended industrial temperature range of –40°C to +125°C.

• Gain-Bandwidth Product: 70 MHz
• Small-Signal Bandwidth: 105 MHz
• Slew Rate: 192 V/µs
• Wide Supply Range: 4.75 V to 27 V
• Low Noise:
  • Input Voltage Noise: 6 nV/√Hz (f = 500 kHz)
  • Input Current Noise: 5 fA/√Hz (f = 10 kHz)
• Rail-to-Rail Input and Output:
  • FET Input Stage: 2 pA Input Bias Current (Typical)
  • High Linear Output Current: 75 mA
• Input Offset: ±1.5 mV (Maximum)
• Offset Drift: ±2 µV/°C (Typical)
• Low Power: 3.6 mA/Channel
• Extended Temperature Operation:
  –40°C to +125°C

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