ADV7305AKST Analog Devices Inc, ADV7305AKST Datasheet - Page 36

• Manufacturer Part Number: ADV7305AKST
• Description: IC ENCODER VIDEO 14BIT 64LQFP
• Manufacturer: Analog Devices Inc
• Type: Video Encoderr

Specifications of ADV7305AKST

• Applications: DVD, SD/HD
• Voltage - Supply, Analog: 2.5V
• Voltage - Supply, Digital: 2.5V
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Number Of Dac's: 6
• Adc/dac Resolution: 14b
• Screening Level: Commercial
• Package Type: LQFP
• Pin Count: 64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADV7304A/ADV7305A
HD 4:2:2 to 4:4:4 Interpolation Filters and Chroma SSAF
It is recommended to input data in 4:2:2 Input Mode to make
use of the HD chroma SSAFs on the ADV7304A/ADV7305A.
This filter has a 0 dB pass-band response and prevents signal
components from being folded back into the frequency band. In
4:4:4 Input Mode, the video data is already interpolated by the
external input device and the chroma SSAFs of the ADV7304A/
ADV7305A are bypassed.
Figure 34. Y – PS 4
Pass Band
–10
–20
–30
–40
–50
–60
–70
–80
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
1.0
0.5
0
Figure 33. Y – PS 4
0
0
0
10
2
20
30
4
40
FREQUENCY – MHz
FREQUENCY – MHz
Oversampling Filter in the
50
6
Oversampling Filter
60
8
70
80
10
90
12
100
110
14
–36–
The chroma SSAF is controlled with Address 13h, Bit 5.
When the HD input format is 4:2:2, the HD Chroma Input Bit
[Address 13h, Bit 6] must be set to “1.”
2 /4 /8
The oversampling filters are enabled in setting the PLL ON
control [Subaddress 00h, Bit 1] to “1.” If enabled, PS and
ITU-R.BT656 data is output at a rate of 108 MHz, HDTV at a
rate of 148 MHz.
Figure 36. Y – HDTV 2
the Pass Band
–10
–20
–30
–40
–50
–60
–70
–80
Figure 35. Y – HDTV 2
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
1.0
0.5
0
0
Oversampling Filters
0
0
20
5
40
10
FREQUENCY – MHz
60
FREQUENCY – MHz
15
80
Oversampling Filter in
Oversampling Filter
20
100
25
120
140
30
160
REV. A
35