LTC2635 Linear Technology, LTC2635 Datasheet - Page 26

• Manufacturer Part Number: LTC2635
• Description: Quad 10-Bit I2C VOUT DACs
• Manufacturer: Linear Technology

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LTC2635
OPERATION
this effect than any other parts of this type; on the con-
trary, it allows layout-based performance improvements
to shine rather than limiting attainable performance with
excessive internal resistance.
Another technique for minimizing errors is to use a sepa-
rate power ground return trace on another board layer.
The trace should run between the point where the power
supply is connected to the board and the DAC ground pin.
Thus the DAC ground pin becomes the common point for
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analog ground, digital ground, and power ground. When
the LTC2635 is sinking large currents, this current fl ows
out the ground pin and directly to the power ground trace
without affecting the analog ground plane voltage.
It is sometimes necessary to interrupt the ground plane
to confi ne digital ground currents to the digital portion
of the plane. When doing this, make the gap in the plane
only as long as it needs to be to serve its purpose and
ensure that no traces cross over the gap.
2635f