ADV7192KST datasheet(13/69 Pages) AD

13 / 69 page

ADV7192

–13–

REV. 0

Table I. Luminance Internal Filter Speciﬁcations (4

Oversampling)

Passband

3 dB Bandwidth

Stopband

Filter Type

Filter Selection

Ripple

1 (dB)

(MHz)

Cutoff

3 (MHz)

Attentuation

4 (dB)

MR04 MR03 MR02

Low-Pass (NTSC)

0.16

4.24

6.05

–75.2

Low-Pass (PAL)

0.1

4.81

6.41

–64.6

Notch (NTSC)

0.09

2.3/4.9/6.6

8.03

–87.3

Notch (PAL)

0.1

3.1/5.6/6.4

8.02

–79.7

Extended (SSAF)

0.04

6.45

8.03

–86.6

CIF

0.127

3.02

5.04

–62.6

QCIF

Monotonic

1.5

3.74

–88.2

NOTES

1Passband Ripple is deﬁned as the fluctuations from the 0 dB response in the passband, measured in (dB). The passband is deﬁned to have 0–fc frequency limits for a

low-pass ﬁlter, 0–f1 and f2–inﬁnity for a notch ﬁlter, where fc, f1, f2 are the –3 dB points.

23 dB bandwidth refers to the –3 dB cutoff frequency.

3Stopband Cutoff refers to the frequency at the attenuation point referred to under Note 4.

4Stopband Attenuation refers to the attenuation point (dB) at the frequency referred to under Note 3.

Table II. Chrominance Internal Filter Speciﬁcations (4

Oversampling)

Passband

3 dB Bandwidth

Stopband

Filter Type

Filter Selection

Ripple1 (dB)

(MHz)

Cutoff 3 (MHz)

Attentuation4 (dB)

MR07 MR06 MR05

1.3 MHz Low-Pass

0.09

1.395

2.46

–83.9

0.65 MHz Low-Pass

Monotonic

0.65

2.41

–71.1

1.0 MHz Low-Pass

Monotonic

1.0

1.89

–64.43

2.0 MHz Low-Pass

0.048

2.2

3.1

–65.9

3.0 MHz Low-Pass

Monotonic

3.2

5.3

–84.5

CIF

Monotonic

0.65

2.41

–71.1

QCIF

Monotonic

0.5

1.75

–33.1

NOTES

1Passband Ripple is deﬁned as the fluctuations from the 0 dB response in the passband, measured in (dB). The passband is deﬁned to have 0–fc frequency limits for a

low-pass ﬁlter, 0–f1 and f2–inﬁnity for a notch ﬁlter, where fc, f1, f2 are the –3 dB points.

23 dB bandwidth refers to the –3 dB cutoff frequency.

3Stopband Cutoff refers to the frequency at the attenuation point referred to under Note 4.

4Stopband Attenuation refers to the attenuation point (dB) at the frequency referred to under Note 3.

When used to interface progressive scan systems, the ADV7192

allows input to YCrCb signals in Progressive Scan format

10-bit) before these signals are routed to the interpolation

ﬁlters and the DACs.

INTERNAL FILTER RESPONSE

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/attenuation,

a CIF response, and a QCIF response. The UV/filter supports

several different frequency responses including ﬁve low-pass

responses, a CIF response, and a QCIF response, as can be seen in

the following ﬁgures. All filter plots show the 4

Oversampling

responses.

In Extended Mode 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

2C. The variation

of frequency responses can be seen in the Tables I and II. For

more detailed filter plots refer to Analog Devices’ Application

Note AN-562.

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