max5885egmtd Maxim Integrated Products, Inc., max5885egmtd Datasheet - Page 16

• Manufacturer Part Number: max5885egmtd
• Description: Max5885 3.3v, 16-bit, 200msps High Dynamic Performance Dac With Cmos Inputs
• Manufacturer: Maxim Integrated Products, Inc.

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.
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.
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.
3.3V, 16-Bit, 200Msps High Dynamic
Performance DAC with CMOS Inputs
Figure 12. Recommended Power-Supply Decoupling and Bypassing Circuitry
16
______________________________________________________________________________________
16
B0–B15
AV
BYPASSING—DAC LEVEL
DD
AGND
DV
MAX5885
0.1µF
DD
DGND
VCLK
0.1µF
CLKGND
0.1µF
Glitch Energy
Settling Time
Gain Error
OUTP
OUTN
1µF
1µF
1µF
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):
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.
AV
DV
VCLK
CC
CC
10µF
10µF
10µF
BYPASSING—BOARD LEVEL
FERRITE BEAD
FERRITE BEAD
FERRITE BEAD
SNR
Dynamic Performance Parameter
dB
47µF
47µF
47µF
= 6.02
Signal-to-Noise Ratio (SNR)
dB
ANALOG POWER-SUPPLY
SOURCE
DIGITAL POWER-SUPPLY
SOURCE
CLOCK POWER-SUPPLY
SOURCE
✕
N + 1.76
dB
Definitions