CS42418-CQZ Cirrus Logic Inc, CS42418-CQZ Datasheet - Page 62
![IC CODEC 8CH PLL 192KHZ 64LQFP](/photos/6/80/68060/cs42418-cqz_sml.jpg)
CS42418-CQZ
Manufacturer Part Number
CS42418-CQZ
Description
IC CODEC 8CH PLL 192KHZ 64LQFP
Manufacturer
Cirrus Logic Inc
Type
General Purposer
Datasheet
1.CS42418-CQZ.pdf
(73 pages)
Specifications of CS42418-CQZ
Data Interface
Serial
Resolution (bits)
24 b
Number Of Adcs / Dacs
2 / 8
Sigma Delta
Yes
Dynamic Range, Adcs / Dacs (db) Typ
114 / 110
Voltage - Supply, Analog
4.75 V ~ 5 V
Voltage - Supply, Digital
3.13 V ~ 5.25 V
Operating Temperature
-10°C ~ 70°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
15
Adc / Dac Resolution
24bit
Adcs / Dacs Signal To Noise Ratio
110dB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
598-1029
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62
9. APPENDIX B: PLL FILTER
9.1
9.1.1
9.1.2
External Filter Components
General
The PLL behavior is affected by the external filter component values in the Typical Connection Diagrams.
Figure
comprise the PLL filter. The external PLL component values listed in
cy jitter-attenuation curve, take a short time to lock, and offer good output jitter performance. Lock times
are worst case for an Fsi transition of 192 kHz.
It is important to treat the LPFILT pin as a low-level analog input. It is suggested that the ground end of
the PLL filter be returned directly to the AGND pin independently of the digital ground plane.
Capacitor Selection
The type of capacitors used for the PLL filter can have a significant effect on PLL performance. Large or
exotic film capacitors are not necessary because their leads, and the required longer circuit board traces,
add undesirable inductance to the circuit. Surface-mount ceramic capacitors are a good choice because
their own inductance is low, and they can be mounted close to the LPFLT pin to minimize trace induc-
tance. For CRIP, a C0G or NPO dielectric is recommended; and for CFILT, an X7R dielectric is preferred.
Avoid capacitors with large temperature co-coefficient, or capacitors with high dielectric constants, that
are sensitive to shock and vibration. These include the Z5U and Y5V dielectrics.
5
and Figure
6
show the recommended configuration of the two capacitors and one resistor that
Table 16. PLL External Component Values
RFILT (kΩ) CFILT (µF) CRIP (pF)
2.55
0.047
2200
Table 16
have a high corner-frequen-
CS42418
DS603F1