AK4705 Datasheet, PDF (14/50 Pages) Asahi Kasei Microsystems – 2ch 24bit DAC with AV SCART Switch

[AK4705]
ANALOG CHARACTERISTICS (VIDEO)
(Ta = 25°C; VP=12V, VD = 5V; VVD1=VVD2 = 5V; VVOL1/0= “00” unless specified.)
Parameter
Conditions
min typ max Units
Sync Tip Clamp Voltage at output pin.
0.7
V
Chrominance Bias Voltage at output pin.
2.2
V
Pb/Pr Clamp Voltage
at output pin.
2.2
V
Gain
Input=0.3Vp-p, 100kHz
5.5 6 6.5 dB
RGB Gain
Input=0.3Vp-p, VVOL1/0= “00”
5.5 6 6.5 dB
100kHz
VVOL1/0= “01”
6.7 7.2 7.7 dB
VVOL1/0= “10”
7.7 8.2 8.7 dB
VVOL1/0= “11”
8.6 9.1 9.6 dB
Interchannel Gain Mismatch TVRC, TVG, TVB. Input=0.3Vp-p, 100kHz.
-0.5 -
0.5
dB
Frequency Response
Input=0.3Vp-p, C1=C2=0pF. 100kHz to 6MHz. -1.0
0.5 dB
at 10MHz.
-3
dB
at 27MHz.
-40 -25 dB
Group Delay Distortion
At 4.43MHz with respect to 1MHz.
15
ns
Input Impedance
Chrominance input (internally biased)
40 60
-
kΩ
Input Signal
f=100kHz, maximum with distortion < 1.0%, -
-
1.5 Vpp
gain=6dB.
Load Resistance
(Figure 1)
150 -
-
Ω
Load Capacitance
C1 (Figure 1)
400 pF
C2 (Figure 1)
15
pF
Dynamic Output Signal
f=100kHz, maximum with distortion < 1.0%
-
-
3 Vpp
Y/C Crosstalk
f=4.43MHz, 1Vp-p input. Among TVVOUT, - -50 -
dB
TVRC, VCRVOUT and VCRC outputs.
S/N
Reference Level = 0.7Vp-p, CCIR 567 weighting. -
74
-
dB
BW= 15kHz to 5MHz.
Differential Gain
0.7Vpp 5steps modulated staircase.
- +0.4 -
%
chrominance &burst are 280mVpp, 4.43MHz.
Differential Phase
0.7Vpp 5steps modulated staircase.
- +0.8 - Degree
chrominance &burst are 280mVpp, 4.43MHz.
Video Signal Output
C2
R1
75 Ω
C1
R2
75 Ω
max: 15pF
max: 400pF
Figure 1. Load Resistance R1+R2 and Load Capacitance C1/C2.
MS0451-E-01
- 14 -
2007/06