[AK4223]

MS1251-E-00

8

2010/10

ANALOG CHARACTERISTICS (Video)

(Ta = 25

°C; AVDD= RVDD= VVDD= 9.0V; VSS1= VSS2 = 0V; VGAIN= +6dB, VGCA=0dB; VR1/2 bit=“0”; unless

otherwise specified.)

Parameter

Conditions

min

typ

max

Units

VGAIN=+3dB, +6dB

200

mV

Sync tip clamp level

(Note 11)

VGAIN=-3dB, 0dB

500

mV

6dB

-

7

-

dB

3dB

-

4

-

dB

0dB

-

1

-

dB

VGCA=+1dB

-3dB

-

-2

-

dB

6dB

5.6

6

6.4

dB

3dB

2.6

3

3.4

dB

0dB

-0.4

0

0.4

dB

VGCA=0dB

-3dB

-3.4

-3

-2.6

dB

6dB

-

5

-

dB

3dB

-

2

-

dB

0dB

-

-1

-

dB

Gain

Input=0.3Vp-p, 100kHz

VGCA=-1dB

-3dB

-

-4

-

dB

VGCA step

-

0.1

-

dB

Response at 6MHz

-1.0

+1.0

dB

Response at 27MHz

-

-35

-

dB

Frequency Response

Input=0.3Vpp, Sin Wave

(0dB at 100kHz)

Group Delay Distortion

|GD3MHz – GD6MHz|

10

40

ns

Input Impedance

300

k

Ω

Input Signal

1.5

Vpp

Inter channel Isolation

f=4.43MHz, 1Vpp input

-

52

dB

S/N

Reference Level = 0.7Vp-p,

BW= 100kHz to 6MHz.

-

65

dB

Differential Gain

0.7Vpp 5steps modulated staircase.

Chrominance & burst are 280mVpp, 4.43MHz.

+0.4

-

%

Differential Phase

0.7Vpp 5steps modulated staircase.

Chrominance & burst are 280mVpp, 4.43MHz.

+1

-

Degree

VR1/2 bit = “0”, R1+R2 (Figure 4)

140

150

160

Ω

Load Resistance

VR1/2 bit = “1”, R1 (Figure 5)

100

-

-

k

Ω

VR1/2 bit = “0”, (Figure 4)

C1

C2

1.5

15

nF

pF

Load Capacitance

VR1/2 bit = “1”, (Figure 5)

C1+C2

15

pF

CMRR

f=20kHz, 1Vp-p input

34

55

dB

Note 11. At the measurement point A in Figure 3. Idling DC output level is 200mV(max) when VGAIN=+6dB or +3db,

and 500mV(max) when VGAIN=0dB or -3dB.

VOUT

75

Ω

75

Ω

0V

a

Pedestal Volltage

a: 100mV(max): VGAIN=+3dB, +6dB

Measurment point A

Figure 3. Measurement Point