max5858 Maxim Integrated Products, Inc., max5858 Datasheet - Page 22

• Manufacturer Part Number: max5858
• Description: Max5858 Dual, 10-bit, 300msps, Current-output Dac With 4x/2x/1x Interpolation Filters
• Manufacturer: Maxim Integrated Products, Inc.

The two-tone IMD is the ratio expressed in dBc of either out-
put tone to the worst 3rd-order (or higher) IMD products.
Integral nonlinearity (INL) is the deviation of the values
on an actual transfer function from a line drawn
between the end points of the transfer function, once
offset and gain errors have been nullified. For a DAC,
the deviations are measured at every individual step.
Differential nonlinearity (DNL) is the difference between
an actual step height and the ideal value of 1 LSB. A
DNL error specification no more negative than -1 LSB
guarantees monotonic transfer function.
Offset error is the current flowing from positive DAC
output when the digital input code is set to zero. Offset
error is expressed in LSBs.
Dual, 10-Bit, 300Msps, Current-Output DAC with
4x/2x/1x Interpolation Filters
22
Static Performance Parameter Definitions
______________________________________________________________________________________
Intermodulation Distortion (IMD)
Differential Nonlinearity (DNL)
Integral Nonlinearity (INL)
Offset Error
A gain error is the difference between the ideal and the
actual full-scale output current 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 ideal current is
defined by reference voltage at V
The settling time is the amount of time required from the
start of a transition until the DAC output settles to its
new output value to within the converter’s specified
accuracy.
A glitch is generated when a DAC switches between
two codes. The largest glitch is usually generated
around the midscale transition, when the input pattern
transitions from 011…111 to 100…000. This occurs due
to timing variations between the bits. The glitch impulse
is found by integrating the voltage of the glitch at the
midscale transition over time. The glitch impulse is usu-
ally specified in pV-s.
TRANSISTOR COUNT: 178,376
PROCESS: CMOS
Chip Information
REFO
/ I
Glitch Impulse
REF
Settling Time
Gain Error
x 32.