[AK4223]
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
Sync tip clamp level
(Note 11)
Conditions
VGAIN=+3dB, +6dB
min
typ
max
200
500
-
-
-
-
6.4
3.4
0.4
-2.6
-
-
-
-
-
Units
mV
mV
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
VGAIN=-3dB, 0dB
VGCA=+1dB
Gain
6dB
3dB
0dB
-3dB
6dB
3dB
0dB
-3dB
6dB
3dB
0dB
-3dB
-
-
-
7
4
1
-2
6
3
0
-3
5
Input=0.3Vp-p, 100kHz
-
5.6
2.6
-0.4
-3.4
-
-
-
-
-
VGCA=0dB
VGCA=-1dB
2
-1
-4
0.1
VGCA step
Frequency Response
Input=0.3Vpp, Sin Wave
(0dB at 100kHz)
Group Delay Distortion
Input Impedance
Input Signal
Response at 6MHz
Response at 27MHz
-1.0
-
+1.0
-
-35
|GD3MHz – GD6MHz|
10
300
40
ns
kΩ
Vpp
dB
1.5
Inter channel Isolation
S/N
f=4.43MHz, 1Vpp input
Reference Level = 0.7Vp-p,
BW= 100kHz to 6MHz.
0.7Vpp 5steps modulated staircase.
Chrominance & burst are 280mVpp, 4.43MHz.
0.7Vpp 5steps modulated staircase.
Chrominance & burst are 280mVpp, 4.43MHz.
VR1/2 bit = “0”, R1+R2 (Figure 4)
VR1/2 bit = “1”, R1 (Figure 5)
VR1/2 bit = “0”, (Figure 4)
C1
-
-
52
65
dB
Differential Gain
Differential Phase
Load Resistance
+0.4
+1
-
-
%
Degree
140
100
150
-
160
-
Ω
kΩ
Load Capacitance
1.5
15
nF
pF
C2
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.
Measurment point A
Pedestal Volltage
75Ω
a
VOUT
0V
a: 100mV(max): VGAIN=+3dB, +6dB
75Ω
Figure 3. Measurement Point
MS1251-E-00
8
2010/10