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OPA2356-EP

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SBOS955 – FEBRUARY 2019

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Copyright © 2019, Texas Instruments Incorporated

9 Power Supply Recommendations

The OPA2356-EP is specified for operation from 2.7 to 5.5 V (±1.35 to ±2.75 V); many specifications apply from

–55°C to 125°C. Parameters that can exhibit significant variance with regard to operating voltage or temperature

are shown in the Typical Characteristics section.

Place 0.1-μF bypass capacitors close to the power-supply pins to reduce errors coupling in from noisy or high-

impedance power supplies. For more detailed information on bypass capacitor placement, see the Layout

Guidelines section.

Power dissipation depends on power-supply voltage, signal, and load conditions. With DC signals, power

dissipation is equal to the product of output current times the voltage across the conducting output transistor,

required output voltage swing.

For resistive loads, the maximum power dissipation occurs at a DC output voltage of one-half the power-supply

voltage. Dissipation with AC signals is lower.

Any tendency to activate the thermal protection circuit indicates excessive power dissipation or an inadequate

heat sink. For reliable operation, limit junction temperature to 150°C maximum. To estimate the margin of safety

in a complete design, increase the ambient temperature to trigger the thermal protection at 160°C. The thermal

protection must trigger more than 35°C above the maximum expected ambient condition of the application.