Analog Devices Inc. ADA4099-1/2 Over-The-Top™ Precision Op Amps

Analog Devices Inc. ADA4099-1/2 Over-The-Top™ Precision Op Amps offer inputs that operate from −VS to +VS and beyond, referred to as Over-The-Top. The ADA4099-1/2 features offset voltages of <30µV, input bias currents (IB) of <10nA, and can operate on single or split supplies that range from 3.15V to 50V. Additionally, the ADA4099-1/2 draws 1.5mA of quiescent current.

The ADI ADA4099-1/2 Over-The-Top Precision Op Amps provide an input stage with robust input protection features for abusive environments. The inputs can tolerate up to 80V of differential voltage without damage or degradation to dc accuracy. The operating input common-mode range extends from rail-to-rail and beyond, up to 70V > –VS, independent of the +VS supply.

The device is unity-gain stable and can drive loads requiring up to 20mA. The Op-Amps also drive capacitive loads as large as 100pF and are available with a low power shutdown. The ADA4099-1/2 is available in a standard, 6-lead, thin small outline transistor (TSOT) package.


  • -VS - 0.1V to -VS + 7V Ultrawide common-mode range
  • +3.15 V to +50V (±25V for PSRR) Wide power supply voltage range (VSY)
  • 1.5mA (typical) Low supply current
  • ±30µV Maximum low input offset voltage
  • ±0.4μV/°C Maximum low input offset voltage drift
  • Low voltage noise:
    • 6Hz Typical 1/f noise corner
    • 150nV p-p Typical at 0.1Hz to 10Hz
    • 7nV/√Hz Typical at 100Hz (en)
  • High speed
    • 8MHz Typical GBP
    • 5.5V/µs Typical at ΔVOUT = 25V slew rate
  • 20µA Maximum low power shutdown
  • ±10nA Maximum low input bias current
  • 120dB Minimum large signal voltage gain
  • 123dB, Minimum CMRR
  • 126dB, Minimum PSRR
  • Input overdrive tolerant with no phase reversal
  • ±2kV HBM and ±2kV FICDM
  • -55°C to +150°C (H grade) Wide temperature range
  • 6-Lead TSOT package


  • Industrial sensor conditioning
  • Supply current sensing
  • Battery and power supply monitoring
  • Front-end amplifiers in abusive environments
  • 4mA to 20mA transmitters

Additional Resources

Protect Against Overvoltages in Analog Front Ends
This article illustrates how Over-The-Top amplifiers can provide protection against overvoltage in industrial applications.

Learn More

Typical Application Circuit

Application Circuit Diagram - Analog Devices Inc. ADA4099-1/2 Over-The-Top™ Precision Op Amps
Zveřejněno: 2021-04-06 | Aktualizováno: 2022-03-11