CS8421-CZZ Cirrus Logic Inc, CS8421-CZZ Datasheet - Page 24
![IC SAMPLE RATE CONVERTER 20TSSOP](/photos/7/3/70373/mfg_cs8421_series_sml.jpg)
CS8421-CZZ
Manufacturer Part Number
CS8421-CZZ
Description
IC SAMPLE RATE CONVERTER 20TSSOP
Manufacturer
Cirrus Logic Inc
Type
Sample Rate Converterr
Datasheet
1.CS8421-CZZ.pdf
(36 pages)
Specifications of CS8421-CZZ
Package / Case
20-TSSOP
Applications
CD-R, DAT, DVD, MD, VTR
Mounting Type
Surface Mount
Operating Supply Voltage
3.3 V / 5.0 V
Operating Temperature Range
- 10 C to + 70 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
598-1018 - BOARD EVAL FOR CS8421
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
598-1126-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CS8421-CZZ
Manufacturer:
CIRRUS
Quantity:
1 223
Part Number:
CS8421-CZZ
Manufacturer:
CIRRUS
Quantity:
20 000
CS8421
4.6
Power Supply, Grounding, and PCB Layout
The CS8421 operates from a VD = +2.5 V and VL = +3.3 V or +5.0 V supply. These supplies may be set
independently. Follow normal supply decoupling practices; see
Figure
6.
Extensive use of power and ground planes, ground-plane fill in unused areas, and surface-mount decou-
pling capacitors are recommended. Decoupling capacitors should be mounted on the same side of the
board as the CS8421 to minimize inductance effects, and all decoupling capacitors should be as close to
the CS8421 as possible. The pin of the configuration resistors not connected to MS_SEL, SAIF, and SAOF
should be connected as close as possible to VL or GND.
The CS8421 is available in the compact QFN package. The underside of the QFN package reveals a metal
pad that serves as a thermal relief to provide for optimal heat dissipation. This pad must mate with an equally
dimensioned copper pad on the PCB and must be electrically connected to ground. A series of vias should
be used to connect this copper pad to one or more larger ground planes on other PCB layers.
24
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