CS42528-DQZ Cirrus Logic Inc, CS42528-DQZ Datasheet - Page 41
![IC CODEC S/PDIF RCVR 64-LQFP](/photos/6/80/68091/mfg_cs425_series_sml.jpg)
CS42528-DQZ
Manufacturer Part Number
CS42528-DQZ
Description
IC CODEC S/PDIF RCVR 64-LQFP
Manufacturer
Cirrus Logic Inc
Type
Audio Codecr
Datasheet
1.CS42528-CQZ.pdf
(91 pages)
Specifications of CS42528-DQZ
Data Interface
Serial
Resolution (bits)
24 b
Number Of Adcs / Dacs
2 / 8
Sigma Delta
Yes
Dynamic Range, Adcs / Dacs (db) Typ
114 / 114
Voltage - Supply, Analog
4.75 V ~ 5.25 V
Voltage - Supply, Digital
3.13 V ~ 5.25 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
64-LQFP
Audio Codec Type
Stereo
No. Of Adcs
2
No. Of Dacs
8
No. Of Input Channels
2
No. Of Output Channels
8
Adc / Dac Resolution
24bit
Adcs / Dacs Signal To Noise Ratio
114dB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
598-1503 - BOARD EVAL FOR CS42528/CS49300
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CS42528-DQZ
Manufacturer:
Cirrus Logic Inc
Quantity:
10 000
Company:
Part Number:
CS42528-DQZR
Manufacturer:
Cirrus Logic Inc
Quantity:
10 000
CS42528
4.10
Power Supply, Grounding, and PCB Layout
As with any high-resolution converter, the CS42528 requires careful attention to power supply and ground-
ing arrangements if its potential performance is to be realized. Figure
5
shows the recommended power ar-
rangements, with VA and VARX connected to clean supplies. VD, which powers the digital circuitry, may be
run from the system logic supply. Alternatively, VD may be powered from the analog supply via a ferrite
bead. In this case, no additional devices should be powered from VD.
For applications where the output of the PLL is required to be low jitter, use a separate, low-noise analog
+5 V supply for VARX, decoupled to AGND. In addition, a separate region of analog ground plane around
the FILT+, VQ, LPFLT, REFGND, AGND, VA, VARX, RXP/and RXP0 pins is recommended.
Extensive use of power and ground planes, ground plane fill in unused areas and surface mount decoupling
capacitors are recommended. Decoupling capacitors should be as near to the pins of the CS42528 as pos-
sible. The low value ceramic capacitor should be the nearest to the pin and should be mounted on the same
side of the board as the CS42528 to minimize inductance effects. All signals, especially clocks, should be
kept away from the FILT+, VQ and LPFLT pins in order to avoid unwanted coupling into the modulators and
PLL. The FILT+ and VQ decoupling capacitors, particularly the 0.1 µF, must be positioned to minimize the
electrical path from FILT+ and REFGND. The CDB42528 evaluation board demonstrates the optimum lay-
out and power supply arrangements.
DS586F1
41