CDB4353 Cirrus Logic Inc, CDB4353 Datasheet - Page 20

• Manufacturer Part Number: CDB4353
• Description: BOARD EVAL FOR CS4353 DAC
• Manufacturer: Cirrus Logic Inc

Specifications of CDB4353

• Number Of Dac's: 2
• Number Of Bits: 24
• Outputs And Type: 2, Single Ended
• Sampling Rate (per Second): 192k
• Data Interface: Serial
• Dac Type: Voltage
• Voltage Supply Source: Single
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: CS4353
• Silicon Manufacturer: Cirrus Logic
• Application Sub Type: DAC
• Kit Application Type: Data Converter
• Silicon Core Number: CS4353
• Kit Contents: Board
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 598-1519; CDB-4353

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4.10
4.10.1 Capacitor Placement
Grounding and Power Supply Arrangements
As with any high-resolution converter, the CS4353 requires careful attention to power supply and grounding
arrangements if its potential performance is to be realized.
rangements, with VCP, VA, and VL connected to clean supplies. It is strongly recommended that a single
ground plane be used, with the DGND, CPGND, and AGND pins all connected to this common plane.
Should it be necessary to split the ground planes, the DGND and CPGND pins should be connected to the
digital ground plane and the AGND pin should be connected to the analog ground plane. In this configura-
tion, it is critical that the digital and analog ground planes be tied together with a low-impedance connection,
ideally a strip of copper on the printed circuit board, at a single point near the CS4353.
All signals, especially clocks, should be kept away from the VBIAS pin in order to avoid unwanted coupling
into the DAC.
Decoupling capacitors should be placed as close to the device as possible, with the low-value ceramic
capacitor being the closest. To further minimize impedance, these capacitors should be located on the
same PCB layer as the device. If desired, all supply pins may be connected to the same supply, but a
decoupling capacitor should still be placed on each supply pin. See
voltage present across pin pairs. This is useful for choosing appropriate capacitor voltage ratings and ori-
entation if electrolytic capacitors are used.
The CDB4353 evaluation board demonstrates the optimum layout and power supply arrangements.
Figure 3
shows the recommended power ar-
DC Electrical Characteristics
CS4353
DS803F1
for the