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DAC11001A Datasheet(PDF) 35 Page - Texas Instruments

No. de Pieza. DAC11001A
Descripción  DACx1001 20-Bit, 18-Bit, and 16-Bit, Low-Noise, Ultra-Low Harmonic Distortion, Fast-Settling, High-Voltage Output, Digital-to-Analog Converters (DACs)
Descarga  42 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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DAC11001A Datasheet(HTML) 35 Page - Texas Instruments

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10 …F
1 …F
VCC
10
Ferrite
bea d
15V
+
±
10 …F
1 …F
VSS
10
15V
10 …F
1 …F
AVDD
10
5V
+
±
Ferrite
bea d
0.1 …F
DGND
DVDD
10 …F
0.1 …F
DGND
IOVDD
3.3V
+
±
DGND
AGND
AGND
AGND
AGND
AGND
AGND
35
DAC11001A, DAC91001, DAC81001
www.ti.com
SLASEL0 – OCTOBER 2019
Product Folder Links: DAC11001A DAC91001 DAC81001
Submit Documentation Feedback
Copyright © 2019, Texas Instruments Incorporated
Power-supply bypassing and decoupling is key to keep power supply noise, switching transients, and common-
mode currents away from the DAC output. There are three main objective of power-supply bypassing:
Filtering: Filter out noise and ripple from power supplies
Bypassing: Supply switching or load transient currents locally by avoiding trace inductances
Decoupling: Stop local transient currents from impacting other circuits
To achieve these objectives, use the following 3-element scheme. Place a decoupling capacitor close to every
power supply pin to provide the local current path for load and circuit switching transients. This capacitor must be
referenced to the respective load ground for best load transient suppression. Use a 0.1-µF to 1-µF, X7R,
multilayer ceramic capacitor (MLCC) for this purpose. For analog power supplies, a 10-Ω series resistor provides
the best decoupling. For filtering the power supply noise and ripple, 10-µF capacitors work best when placed at
the power entry point of the board. An example decoupling scheme is shown in Figure 28.
Figure 28. Power-Supply Decoupling


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