MAX5816 MAXIM [Maxim Integrated Products], MAX5816 Datasheet - Page 28

• Manufacturer Part Number: MAX5816
• Description: Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC with Internal Reference and I2C Interface
• Manufacturer: MAXIM [Maxim Integrated Products]

When power is applied to V
zero scale. To optimize DAC linearity, wait until the sup-
plies have settled and the internal setup and calibration
sequence completes (200Fs, typ). Note all commands
issued during the period will be ignored.
Bypass V
a low-impedance ground as close as possible to the
device. Minimize lead lengths to reduce lead inductance.
Connect the GND to the analog ground plane.
Digital and AC transient signals on GND can create noise
at the output. Connect GND to form the star ground for the
DAC system. Refer remote DAC loads to this system ground
for the best possible performance. Use proper grounding
techniques, such as a multilayer board with a low-inductance
ground plane, or star connect all ground return paths back
to the MAX5816 GND. Carefully layout the traces between
channels to reduce AC cross-coupling. Do not use wire-
wrapped boards and sockets. Use shielding to minimize
noise immunity. Do not run analog and digital signals parallel
to one another, especially clock signals. Avoid routing digital
lines underneath the MAX5816 package.
INL is the deviation of the measured transfer function
from a straight line drawn between two codes once offset
and gain errors have been nullified.
Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC
DD
with high-quality ceramic capacitors to
Applications Information
 Maxim Integrated Products 28
Integral Nonlinearity (INL)
Bypassing Considerations
Layout Considerations
Power-On Reset (POR)
DD
with Internal Reference and I
, the DAC output is set to
Power Supplies and
Definitions
DNL is the difference between an actual step height
and the ideal value of 1 LSB. If the magnitude of the
DNL P 1 LSB, the DAC guarantees no missing codes and
is monotonic. If the magnitude of the DNL R 1 LSB, the
DAC output may still be monotonic.
Offset error indicates how well the actual transfer func-
tion matches the ideal transfer function at a single point.
Typically, the point at which the offset error is specified
is at or near the zero-scale point of the transfer function.
Gain error is the difference between the ideal and the
actual full-scale output voltage on the transfer curve, after
nullifying the offset error. This error alters the slope of the
transfer function and corresponds to the same percentage
error in each step.
The settling time is the amount of time required from the
start of a transition, until the DAC output settles to the new
output value within the converter’s specified accuracy.
Digital feedthrough is the amount of noise that appears
on the DAC output when the DAC digital control lines are
toggled.
A major carry transition occurs at the midscale point
where the MSB changes from low to high and all other
bits change from high to low, or where the MSB changes
from high to low and all other bits change from low to
high. The duration of the magnitude of the switching
glitch during a major carry transition is referred to as the
digital-to-analog glitch impulse.
The digital-to-analog power-up glitch is the duration of
the magnitude of the switching glitch that occurs as the
device exits power-down mode.
Digital-to-Analog Glitch Impulse
Differential Nonlinearity (DNL)
2
Digital Feedthrough
C Interface
MAX5816
Settling Time
Offset Error
Gain Error