Datasheet
MAX5884
3.3V, 14-Bit, 200Msps High Dynamic
Performance DAC with CMOS Inputs
16 ______________________________________________________________________________________
Gain Error
A 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.
Settling Time
The settling time is the amount of time required from the
start of a transition until the DAC output settles its new
output value to within the converter’s specified accuracy.
Glitch Energy
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. The glitch energy
is found by integrating the voltage of the glitch at the
midscale transition over time. The glitch-energy is usually
specified in pV-s.
Dynamic Performance Parameter
Definitions
Signal-to-Noise Ratio (SNR)
For a waveform perfectly reconstructed from digital sam-
ples, the theoretical maximum SNR is the ratio of the full-
scale analog output (RMS value) to the RMS quantization
error (residual error). The ideal, theoretical maximum SNR
can be derived from the DAC’s resolution (N bits):
SNR
dB
= 6.02
dB
✕ N + 1.76
dB
However, noise sources such as thermal noise, refer-
ence noise, clock jitter, etc., affect the ideal reading;
therefore, SNR is computed by taking the ratio of the
RMS signal to the RMS noise, which includes all spec-
tral components minus the fundamental, the first four
harmonics, and the DC offset.
FERRITE BEAD
AV
CC
1µF10µF47µF
ANALOG POWER-SUPPLY
SOURCE
FERRITE BEAD
DV
CC
1µF10µF47µF
DIGITAL POWER-SUPPLY
SOURCE
FERRITE BEAD
VCLK
1µF10µF47µF
CLOCK POWER-SUPPLY
SOURCE
AV
DD
AGND
MAX5884
B0–B13
14
0.1µF
DGND
0.1µF
VCLK
CLKGND
0.1µF
OUTP
OUTN
DV
DD
BYPASSING—DAC LEVEL BYPASSING—BOARD LEVEL
Figure 12. Recommended Power-Supply Decoupling and Bypassing Circuitry