CS4954-CQZR Cirrus Logic Inc, CS4954-CQZR Datasheet - Page 54

• Manufacturer Part Number: CS4954-CQZR
• Description: IC NTSC/PAL Digital Video Encoder
• Manufacturer: Cirrus Logic Inc
• Type: Video Encoderr

Specifications of CS4954-CQZR

• Voltage - Supply, Analog: 3.15 V ~ 5.25 V
• Voltage - Supply, Digital: 3.15 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: CDB4955A - EVALUATION BOARD FOR CS4955A
• Applications: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

This reduces the total power that the CS4954/5 re-
quires, and eliminates the impedance mismatch
presented by an unused connector. The analog out-
puts should not overlay the analog power plane in
order to maximize high frequency power supply re-
jection.
9.5
To minimize the possibility of damage to the ana-
log output sections, make sure that all video con-
nectors are well grounded. The connector should
have a good DC ground path to the analog and dig-
ital power supply grounds. If no DC (and low fre-
quency) path is present, improperly grounded
equipment can impose damaging reverse currents
54
Analog Output Protection
NOTE:
C
IN
2
should be chosen so that C
C
1
Figure 30. External Low Pass Filter
330pF
33pF
1
= C
2.2 μ H
2
on the video out lines. Therefore, it is also a good
idea to use output filters that are AC coupled to
avoid any problems.
9.6
All MOS devices are sensitive to Electro Static
Discharge (ESD). When manipulating these devic-
es, proper ESD precautions are recommended to
avoid performance degradation or permanent dra-
mage.
9.7
If an output filter is required, the low pass filter
shown in Figure
+ C
cable
ESD Protection
External DAC Output Filter
C
2
30
can be used.
220pF
CS4954 CS4955
OUT
DS278F6