參數(shù)資料
型號(hào): 8817
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: NTSC/PAL Digital Video Encoder
中文描述: NTSC / PAL數(shù)字視頻編碼器
文件頁(yè)數(shù): 7/43頁(yè)
文件大?。?/td> 818K
代理商: 8817
ASAHI KASEI
[AK8817]
MS0413-E-00
7
2005 / Aug
(4) Analog Characteristics
< AVDD = 3.0 V, temperature 25
°
C >
Max
bit
LSB
LSB
V
mV
dB
Amp Input Level 1Vpp
Vpp
dB
100kHz - 5.5MHz Note4)
dB
100kHz - 5.5MHz Note4)
100kHz - 5.5MHz
0dB = 100kHz input
27MHz
0dB = 100kHz input
ns
|GD3MHz - GD6MHz|
V
ppm/
°
C
Parameter
Symbol
1.18
5.0
-45
Min
9
+/- 0.6
+/- 0.4
1.28
6.0
2.0
-51
54
Typ
+/- 2.0
+/- 1.0
1.38
5.0
7.0
Units
Note1)
Note2)
DAC resolution
DAC integral non-linearity ( error )
DAC differential non-linearity ( error )
DAC output full scale voltage
DAC output offset voltage
Video Amp Output Gain
Video Amp Full scale Level
Video Amp THD
Video Amp S/N
Note3)
LPF Ripple
-1
+/- 0.5
+1
dB
LPF Stop Band Level
20
30
dB
LPF Group Delay
On-chip reference voltage (VREF)
Reference voltage drift
Note1) Values are when a 390 ohm output load, a 12k ohm IREF pin resistor and on-chip VREF are used.
Full scale output current is calculated as Iout = full scale output voltage ( typ. 1.28 V ) / 390 ohm = typ. 3.28 mA.
Note2) A voltage referenced to VSS when a decimal zero voltage is input to DAC.
Note3) VOUT Output Level Output Load Resistor: 150ohm, Load Capacitor: 15pF Internal Color Bar output
Note4) Output signal from DAC to which Input data corresponded 1Vpp. This signal is input to AMP.
Load resistor is 150ohm and Load capacitor is 15pF as shown bellow figure at (5) Current Consumption.
(5) Current consumption
< Operating voltage : DVDD = AVDD = PVDD = 3.0 V, Ta = +25
°
C >
Parameter
Symbol
Total power consumption
Power-down current 1
Digital part operating current 1
Analog part operating current 1
Analog part operating current 2
Analog part operating current 3
Note1) operation at 27 MHz, NTSC mode on-chip 75% color bar output is enabled and Video Amp output is “ on “ ( no
external output loads are connected , other than those recommended, connecting-components ).
10
1.23
-50
100
1.30
1.17
Min
27
10
13
14
5.5
0.8
Typ
35
30
Max
mA
uA
mA
mA
mA
mA
Units
Note1)
Note2)
Note3)
Note4)
Note5)
Note6)
SAG Compensation ON
SAG Compensation OFF
75ohm
AK8817
VOUT
SAG
75ohm
100uF
15pF
AK8817
VOUT
SAG
47uF
1uF
75ohm
75ohm
15pF
15pF
15pF
Note2) measuring conditions :
input / output settings after power-down sequence are, PDN pin is at GND level, CLKOUT and SDO output are at high
level ( power supply voltage ) with no external connection, input voltage on those input pins is 1/2 level of power supply
which are set to accept Hi-Z input at power-down, and TEST = ATPG = GND ( or left open ).
Power supplies are AVDD = DVSS = PVDD.
Each ground pin ( DVSS, AVSS, PVSS ) is always 0 V ( voltage reference ).
Note3) Operation at 27 MHz, NTSC mode on-chip 75% color bar output is enabled.
Note4) DAC ON, Video Amp On SAG Compensation On
Note5) DAC ON, Video Amp Off (SAG Compensation Off)
Note6) DAC Off, Video Amp Off (SAG Compensation Off)
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