ADA4945-1ACPZ-R2 datasheet(22/57 Pages) AD

22 / 57 page

Data Sheet

ADA4945-1

analog.com

Rev. A

22 of 57

flowing to the load, as well as currents flowing through the external feedback networks and internal common-mode

feedback loop. The internal resistor tap used in the common-mode feedback loop places a negligible differential

load on the output. Consider RMS voltages and currents when dealing with ac signals.

Airflow reduces θJA. In addition, more metal directly in contact with the package leads from metal traces through

holes, ground, and power planes reduces the θJA.

Figure 2 shows the maximum safe power dissipation in the package vs. the ambient temperature for the 16-lead

LFCSP (θJA= 70°C/W) package on a JEDEC standard 4-layer board. θJA values are approximations.

Figure 2. Maximum Safe Power Dissipation vs. Ambient Temperature

ESD Caution

ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can

discharge without detection. Although this product features patented or proprietary

protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore,

proper ESD precautions should be taken to avoid performance degradation or loss of

functionality.

3.0

–40

–20

120

100

AMBIENT TEMPERATURE (°C)

0.5

1.0

1.5

2.0

2.5

ADA4945-1ACPZ-R2 数据表(PDF) 22 Page - Analog Devices