CDB4364 Cirrus Logic Inc, CDB4364 Datasheet - Page 4

• Manufacturer Part Number: CDB4364
• Description: Eval Bd 6Chn DAC W/DSD Spt&Lw-Ltnc DF
• Manufacturer: Cirrus Logic Inc

Specifications of CDB4364

• Number Of Dac's: 6
• Number Of Bits: 24
• Outputs And Type: 6, Single Ended
• Sampling Rate (per Second): 192k
• Data Interface: Serial
• Dac Type: Voltage
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: CS4364
• Description/function: Audio D/A
• Operating Supply Voltage: 5 V
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: CS4364
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant

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source, remove the shunts on J15 and place a ribbon cable so the signal lines are on the center row and the grounds
are on the right side. R116 and R119 should be populated with 2 kΩ resistors when using an external I²C source
that does not already provide pull-ups.
5. POWER SUPPLY CIRCUITRY
Power is supplied to the evaluation board by four binding posts: GND, +5V, +12V, and -12V (See Figure 9). The
‘+5V’ terminal supplies VA and the rest of the +5 V circuitry on the board. The +3.3 V circuitry is powered from a
regulator. The +2.5 V required for VD is also provided from an on-board regulator. The +5 V supply should be set
within the recommended values for VA stated in the CS4364 datasheet.
WARNING: Refer to the CS4364 datasheet for maximum allowable voltage levels. Operation outside of this range
can cause permanent damage to the device.
6. GROUNDING AND POWER SUPPLY DECOUPLING
As with any high-performance converter, the CS4364 requires careful attention to power supply and grounding ar-
rangements to optimize performance. Figure 2 details the connections to the CS4364 and Figures 10, 11, and 12
show the component placement and top and bottom layout. The decoupling capacitors are located as close to the
CS4364 as possible. Extensive use of ground plane fill in the evaluation board yields large reductions in radiated
noise.
7. ANALOG OUTPUT FILTERING
The analog output on the CDB4364 has been designed according to the CS4364 datasheet. This output circuit in-
cludes a passive 1-pole, 150 kHz filter with an AC coupled output.
S/PDIF IN - OPT1
PCM INPUT - J11
DSD INPUT - J7
CONNECTOR
S/PDIF IN - J9
OUTA1-B3
+12V
GND
-12V
+5V
INPUT/OUTPUT
Output
Input
Input
Input
Input
Input
Input
Input
Input
Table 1. System Connections
+ 5 V power
Ground connection from power supply
Unused
Negative supply for the mute circuitry (-5 V to -12 V)
Digital audio interface input via coax
Digital audio interface input via optical
Input for master, serial, left/right clocks and serial data
Input for DSD serial clock and DSD data
RCA line level analog outputs
SIGNAL PRESENT
CDB4364
DS619DB1