OPA3684 is a low-power, triple current-feedback operational amplifier from Texas Instruments. It features a 170MHz bandwidth, 1.7mA supply current, 120mA output current, and can operate in a single supply of 5V to 12V or a dual supply of ±2.5V to ±6.0V.
The OPA3684 is a low-power, wideband, current-feedback (CFB) operational amplifier designed for applications requiring high bandwidth and low distortion. It features an internally closed-loop input buffer stage that enhances performance over earlier low-power CFB amplifiers, providing a very low and linearized impedance path at the inverting input. This architecture allows for exceptional bandwidth to much higher gains and improved harmonic distortion.
| Small-Signal Bandwidth (G=+2) | 170 MHz min |
|---|---|
| Supply Current (per channel) | 1.7 mA |
| Shutdown Current (per channel) | 100 uA |
| Output Current (Sourcing) | 120 mA |
| Operating Voltage Range | +5V to +12V |
| Storage Temperature Range | -40°C to +125°C |
The small-signal bandwidth is 170 MHz minimum at a gain of +2.
Pulling the disable pin LOW reduces supply current to less than 100 uA/ch and places I/O pins in a high-impedance state.