CDB4384 Cirrus Logic Inc, CDB4384 Datasheet - Page 4
![no-image](/images/manufacturer_photos/0/1/141/cirrus_logic_inc_sml.jpg)
CDB4384
Manufacturer Part Number
CDB4384
Description
Eval Bd 8Chn DAC W/DSD Supt&Low-Latnc DF
Manufacturer
Cirrus Logic Inc
Specifications of CDB4384
Number Of Dac's
8
Number Of Bits
24
Outputs And Type
8, 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
CS4384
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
CS4384
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
Other names
598-1525
4
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 I
which 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 10. 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 CS4384 datasheet.
6. GROUNDING AND POWER SUPPLY DECOUPLING
As with any high-performance converter, the CS4384 requires careful attention to power supply and grounding ar-
rangements to optimize performance. Figure 2 details the connections to the CS4384 and Figures 11, 12, and 13
show the component placement and top and bottom layout. The decoupling capacitors are located as close to the
CS4384 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 CDB4384 has been designed according to the CS4384 datasheet. This output circuit in-
cludes a passive 1-pole, 150 kHz filter with an AC coupled output.
WARNING: Refer to the CS4384 datasheet for maximum allowable voltage levels. Operation outside of this range
S/PDIF IN - OPT1
PCM INPUT - J11
DSD INPUT - J7
CONNECTOR
S/PDIF IN - J9
OUTA1-B4
+12V
GND
-12V
+5V
can cause permanent damage to the device.
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
CDB4384
DS620DB1
²
C source