TL5632C Datasheet, PDF (6/9 Pages) Texas Instruments – 8-BIT 3-CHANNEL HIGH-SPEED DIGITAL-TO-ANALOG CONVERTER

TL5632C
8-BIT 3-CHANNEL HIGH-SPEED DIGITAL-TO-ANALOG CONVERTER
SLAS091 – DECEMBER 1994
APPLICATION INFORMATION
The following design procedures should be used for optimum operation.
D External analog and digital circuitry should be physically separated and shielded as much as possible to
reduce system noise.
D RF breadboarding or RF printed-circuit-board (PCB) techniques should be used throughout the evaluation
and production process.
D Wide ground leads or a ground plane should be used on the PCB layouts to minimize parasitic inductance
and resistance. A ground plane is the better choice for noise reduction.
D AV_CC and DV_CC are also separate internally, so they must be connected externally. These external PCB
leads should also be made as wide as possible. A ferrite bead or equivalent inductance should be placed
in series with AV_CC and the decoupling capacitor before the AV_CC and DV_CC leads are connected together
on the board. It is critical that the supply voltage applied to AV_CC be as noise free and ripple free as possible.
Ripple and noise rejection should be a minimum of 60 dB below the full-scale output range of 1 V
peak-to-peak.
D AV_CC to GND and DV_CC to GND should be decoupled with 3.3-µF and 0.1-µF capacitors, respectively, as
close as possible to the appropriate device terminals. A ceramic chip capacitor is recommended for the
0.1-µF capacitor.
D The phase compensation capacitor should be connected between C_COMP and GND with as short a lead-in
as possible.
D The no-connection (NC) terminals on the small-outline package should be connected to GND.
D AV_CC, DV_CC, and R_OUT, G_OUT, and B_OUT should be shielded from the high-frequency terminals CLK_R IN,
CLK_G IN ,and CLK_B IN and the input data terminals. GND traces should be placed on both sides of the R_OUT,
G_OUT, and B_OUT traces on the PCB to the following signal processing stage. These output traces should
be as short as possible.
6
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265