CS8420-DSZ Cirrus Logic Inc, CS8420-DSZ Datasheet - Page 80
![IC CONV S/R DGTL AUDIO 28-SOIC](/photos/7/3/70396/cs8420-dsz_sml.jpg)
CS8420-DSZ
Manufacturer Part Number
CS8420-DSZ
Description
IC CONV S/R DGTL AUDIO 28-SOIC
Manufacturer
Cirrus Logic Inc
Type
Sample Rate Converterr
Datasheet
1.CS8420-CSZ.pdf
(94 pages)
Specifications of CS8420-DSZ
Applications
Digital Audio
Mounting Type
Surface Mount
Package / Case
28-SOIC
Audio Control Type
Sample Rate Converter
Control Interface
3 Wire, Serial
Supply Voltage Range
4.75V To 5.25V
Operating Temperature Range
-40°C To +85°C
Audio Ic Case Style
SOIC
No. Of Pins
28
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
598-1729
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CS8420-DSZ
Manufacturer:
CIRRUS
Quantity:
20 000
80
14.3
connection. Generally, it may be a good idea to provide the option of grounding or capacitively coupling the
shield to the chassis.
In the case of the consumer interface, the standards call for an unbalanced circuit having a receiver imped-
ance of 75 Ω ±5%. The connector for the consumer interface is an RCA phono socket. The receiver circuit
for the consumer interface is shown in
The circuit shown in
TTL/CMOS logic outputs drive the CS8420 receiver section.
Isolating Transformer Requirements
The transformer should be capable of operating from 1.5 to 14 MHz, which is equivalent to an audio data
rate of 25 kHz to 108 kHz after bi-phase mark encoding. Transformers provide isolation from ground loops,
60 Hz noise, and common mode noise and interference. One of the important considerations when choos-
ing transformers is minimizing shunt capacitance between primary and secondary windings. The higher the
shunt capacitance, the lower the isolation between primary and secondary, and the more coupling of high
frequency energy. This energy appears in the form of common mode noise on the receive side ground and
has the potential to degrade analog performance. Therefore, for best performance, shielded transformers
optimized for minimum shunt capacitance should be used. See Application Note 134 for a selection of man-
ufacturers and their part numbers.
Figure 36
Coax
75 Ω
TTL/CMOS
Figure 35. Consumer Input Circuit
may be used when external RS422 receivers, optical receivers or other
Figure 36. TTL/CMOS Input Circuit
Gate
RCA Phono
Figure
75 Ω
35.
0.01 F
0.01 F
μ
0.01 F
0.01 F
μ
μ
μ
CS8420
RXP
RXN
RXP
RXN
CS8420
CS8420
DS245F4