To minimize noise and ensure optimal performance, it's recommended to follow a star-grounding layout, keep the input and output traces short and separate, and use a solid ground plane. Additionally, place decoupling capacitors close to the power pins and use a low-ESR capacitor for the bypass capacitor.
To minimize the effects of input bias current, use a high-impedance source or add a bias current cancellation resistor. For input offset voltage, use a voltage reference or add an offset nulling circuit. Additionally, consider using a chopper-stabilized or auto-zero op-amp for improved DC performance.
The LMV722IDGKRG4 can drive capacitive loads up to 100 pF without oscillation. However, it's recommended to add a series resistor (Rs) to the output to ensure stability. The value of Rs depends on the capacitive load and the desired frequency response.
To ensure EMI compliance, use a shielded enclosure, keep the op-amp and surrounding components away from the enclosure edges, and use a common-mode choke or ferrite bead on the input and output lines. Additionally, consider using a low-pass filter or EMI filter on the output.
Use a 10 μF to 22 μF ceramic capacitor for power supply decoupling, and a 0.1 μF to 1 μF ceramic capacitor for bypassing. Place the decoupling capacitor close to the power pins and the bypass capacitor close to the op-amp. Use a low-ESR capacitor for the bypass capacitor.
LMV722IDGKRG4 datasheet
by Texas Instruments
