Texas Instruments recommends a layout with a solid ground plane, short traces, and minimal impedance mismatch to ensure high-frequency stability and low noise. A 4-layer PCB with a dedicated analog ground plane is recommended.
Choose an output capacitor with a low equivalent series resistance (ESR) and a high ripple current rating. A 10uF to 22uF ceramic capacitor with an ESR of 0.1 ohms or less is recommended. The output capacitor should be placed close to the output pin of the OPA728AIDGKT.
The maximum power dissipation of OPA728AIDGKT is dependent on the ambient temperature and the thermal resistance of the package. For the DGV package, the maximum power dissipation is 1.4W at 25°C ambient temperature. However, it is recommended to derate the power dissipation to ensure reliable operation.
Yes, OPA728AIDGKT is rated for operation from -40°C to 125°C. However, the device's performance and reliability may degrade at high temperatures. It is recommended to derate the power dissipation and ensure proper thermal management to ensure reliable operation.
To ensure EMI compliance, use a shielded enclosure, keep the PCB layout compact, and use a common-mode choke or ferrite bead on the input and output lines. Additionally, ensure that the device is properly decoupled and that the power supply is well-regulated.
OPA728AIDGKT datasheet
by Texas Instruments
