ASAHI KASEI

[AK4702]

MS0187-E-00

2002/11

- 11 -

FILTER CHARACTERISTICS (AUDIO)

(Ta = 25

Parameter

Symbol

min

typ

max

Units

Digital filter

Passband

(Note: 13)

-6.0dB

PB

0

-

24.0

21.77

-

kHz

kHz

Stopband

(Note: 13)

SB

26.23

kHz

Passband Ripple

PR

dB

Stopband Attenuation

SA

54

dB

Group Delay

(Note: 14)

GD

-

19.1

-

1/fs

Digital Filter + LPF

Frequency Response

0

FR

-

-

dB

Note: 13. The passband and stopband frequencies scale with fs (system sampling rate).

ex.) PB=0.4535×fs (@

Note: 14. The calculating delay time which occurred by digital filtering. This time is from setting the 16/18bit data of

both channels to input register to the output of analog signal.

ANALOG CHARACTERISTICS (VIDEO)

(Ta = 25

Parameter

Conditions

min

typ

max

Units

Sync tip clamp

voltage at output

0.7

V

Chrominance bias

voltage at output

2.2

V

Gain

Input=0.3Vp-p, 100kHz

5.5

6

6.5

dB

VVOL1/0= “00”

5.5

6

6.5

dB

VVOL1/0= “01”

6.7

7.2

7.7

dB

VVOL1/0= “10”

7.7

8.2

8.7

dB

RGB Gain

Input=0.3Vp-p, 100kHz

VVOL1/0= “11”

8.6

9.1

9.6

dB

Interchannel Gain

Mismatch

Input=0.3Vp-p, 100kHz (Note: 15)

-0.3

-

0.3

dB

Frequency response

Input=0.3Vp-p, Response at 6MHz

-1

-0.5

dB

Input impedance

Chrominance input (internally biased)

40

60

-

kohm

Input Signal

f=100kHz, maximum with distortion < 1.0%,

gain=6dB.

-

-

1.5

Vpp

Load Resistance

Except RFV pin (Note: 16)

RFV pin (Note: 17)

150

20k

-

-

-

-

ohm

ohm

Load Capacitance

C1

(Note: 16)

C2

(Note: 16, Note: 17)

400

15

pF

pF

Dynamic Output

Signal

f=100kHz, maximum with distortion < 1.0%

-

-

3

Vpp

Y/C Cross talk

f=4.43MHz, 1Vp-p input. Among TVVOUT,

TVRC, VCRVOUT and VCRC outputs.

-

-50

-

dB

S/N

Reference Level = 0.7Vp-p, CCIR 567 weighting.

BW= 15kHz to 5MHz.

-

74

-

dB

Differential Gain

0.7Vpp 5steps modulated staircase.

chrominance &burst are 280mVpp, 4.43MHz.

-3

-

3

%

Differential Phase

0.7Vpp 5steps modulated staircase.

chrominance &burst are 280mVpp, 4.43MHz.

-3

-

3

Degree