ADV7304AKST Analog Devices Inc, ADV7304AKST Datasheet - Page 38

• Manufacturer Part Number: ADV7304AKST
• Manufacturer: Analog Devices Inc

Specifications of ADV7304AKST

• Number Of Dac's: 6
• Adc/dac Resolution: 14b
• Screening Level: Commercial
• Package Type: LQFP
• Pin Count: 64
• Lead Free Status / RoHS Status: Compliant

ADV7304A/ADV7305A
SD Internal Filter Response
[Subaddress 42h, Bit 0]
The Y filter supports several different frequency responses
including two low-pass responses, two notch responses, an
extended (SSAF) response with or without gain boost/attenua-
tion, a CIF response, and a QCIF response. The UV filter
supports several different frequency responses, including six
low-pass responses, a CIF response, and a QCIF response, as
can be seen in Figures 41–59.
If SD SSAF gain is enabled, there is the option of 12 responses
in the range from –4 dB to +4 dB. The desired response can be
chosen by the user by programming the correct value via the
I
Figures 41–59.
In addition to the chroma filters listed above, the ADV7304A/
ADV7305A contains an SSAF filter specifically designed for
and applicable to the color difference component outputs U and
V. This filter has a cutoff frequency of approximately 2.7 MHz
and –40 dB at 3.8 MHz, as shown in Figure 41. This filter can
be controlled via Address 42h, Bit 0. If this filter is disabled, the
selectable chroma filters shown in Table XVI can be used for
the CVBS or chroma signal.
Filter
Luma LPF NTSC
Luma LPF PAL
Luma Notch NTSC
Luma Notch PAL
Luma SSAF
Luma CIF
Luma QCIF
Chroma 0.65 MHz
Chroma 1.0 MHz
Chroma 1.3 MHz
Chroma 2.0 MHz
Chroma 3.0 MHz
Chroma CIF
Chroma QCIF
NOTES
1
2
Pass-band ripple is the maximum fluctuations from the 0 dB response in the
+3 dB bandwidth refers to the –3 dB cutoff frequency.
2
pass band, measured in dB. The pass band is defined to have 0 Hz to fc (Hz)
frequency limits for a low-pass filter, 0 Hz to f1 (Hz) and f2 (Hz) to infinity for
a notch filter, where fc, f1, f2 are the –3 dB points.
C. The variation of frequency responses can be seen in
Table XVI. Internal Filter Specifications
Pass-Band
Ripple
0.16
0.1
0.04
0.127
Monotonic
0.048
0.09
0.1
Monotonic
Monotonic
0.09
Monotonic
Monotonic
Monotonic
1
(dB)
3 dB
Bandwidth
4.24
4.81
2.3/4.9/6.6
3.1/5.6/6.4
6.45
3.02
1.5
0.65
1
1.395
2.2
3.2
0.65
0.5
2
(MHz)
–38–
–10
–20
–30
–40
–50
–60
–70
–10
–20
–30
–40
–50
–60
–70
–10
–20
–30
–40
–50
–60
0
0
0
Figure 42. Luma NTSC Low-Pass Filter
0
0
0
Figure 43. Luma PAL Low-Pass Filter
Figure 41. UV SSAF Filter
1
2
2
2
4
4
FREQUENCY – MHz
FREQUENCY – MHz
FREQUENCY – MHz
3
6
6
4
8
8
5
10
10
6
REV. A
12
12