ADV7321KSTZ Analog Devices Inc, ADV7321KSTZ Datasheet - Page 48

• Manufacturer Part Number: ADV7321KSTZ
• Description: IC VID ENC 6-12BIT DAC'S 64LQFP
• Manufacturer: Analog Devices Inc
• Type: Video Encoderr

Specifications of ADV7321KSTZ

• Applications: EVD, DVD, SD/PS/HDTV
• Voltage - Supply, Analog: 2.5V
• Voltage - Supply, Digital: 2.5V
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Input Format: Digital
• Output Format: Analog
• Supply Voltage Range: 2.375V To 2.625V
• Operating Temperature Range: 0°C To +70°C
• Tv / Video Case Style: LQFP
• No. Of Pins: 64
• Msl: MSL 1 - Unlimited
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADV7320/ADV7321
FILTERS
Table 27 shows an overview of the programmable filters available
on the ADV7320/ADV7321.
Table 27. Selectable Filters
Filter
SD Luma LPF NTSC
SD Luma LPF PAL
SD Luma Notch NTSC
SD Luma Notch PAL
SD Luma SSAF
SD Luma CIF
SD Luma QCIF
SD Chroma 0.65 MHz
SD Chroma 1.0 MHz
SD Chroma 1.3 MHz
SD Chroma 2.0 MHz
SD Chroma 3.0 MHz
SD Chroma CIF
SD Chroma QCIF
SD UV SSAF
HD Chroma Input
HD Sinc Filter
HD Chroma SSAF
SD Internal Filter Response
[Subaddress 0x40 [7:2]; Subaddress 0x42, Bit 0]
The Y filter supports several frequency responses, including two
low-pass responses, two notch responses, an extended SSAF
response with or without gain boost attenuation, 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 shown in Figure 35 and
Figure 36.
If SD SSAF gain is enabled, there are 12 response options in the
range −4 dB to +4 dB [Subaddress 0x47, Bit 4]. Choose the
desired response by programming the correct value via the I
[Subaddress 0x62]. The variation of frequency responses are
shown in Figure 32 and Figure 33.
In addition to the chroma filters listed in Table 27, the
ADV7320/ADV7321 contain an SSAF filter specifically
designed for the color difference component outputs, U and V.
This filter has a cutoff frequency of about 2.7 MHz and a gain of
–40 dB at 3.8 MHz, as shown in Figure 66. This filter can be
controlled with Address 0x42, Bit 0.
Subaddress
0x40
0x40
0x40
0x40
0x40
0x40
0x40
0x40
0x40
0x40
0x40
0x40
0x40
0x40
0x42
0x13
0x13
0x13
2
Rev. A | Page 48 of 88
C
If this filter is disabled, one of the chroma filters shown in
Table 28 can be selected and used for the CVBS or luma/
chroma signal.
Table 28. Internal Filter Specifications
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
1
2
Pass-band ripple is the maximum fluctuation from the 0 dB response in the
pass band. The pass band is defined to have 0 Hz to fc (Hz) frequency limits
for a low-pass filter, and 0 Hz to f1 (Hz) and f2 (Hz) to infinity for a notch filter,
where fc, f1, and f2 are the −3 dB points.
3 dB bandwidth refers to the −3 dB cutoff frequency.
–10
–20
–30
–40
–50
–60
0
0
1
Figure 66. UV SSAF Filter
EXTENDED UV FILTER MODE
Pass-Band
Ripple
0.16
0.1
0.09
0.1
0.04
0.127
Monotonic
Monotonic
Monotonic
0.09
0.048
Monotonic
Monotonic
Monotonic
2
FREQUENCY (MHz)
1
3
(dB)
4
3 dB Bandwidth
(MHz)
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
5
6
2