參數資料
型號: CH7002D-V
廠商: Electronic Theatre Controls, Inc.
英文描述: Scalable VGA to NTSC/PAL Encoder
中文描述: 可擴展顯卡至NTSC / PAL編碼器
文件頁數: 35/36頁
文件大?。?/td> 199K
代理商: CH7002D-V
CHRONTEL
CH7002D
201-0000-029 Rev 6.1, 8/2/99
35
Electrical Specifications (Continued)
Table 9. Recommended Operating Conditions
Note:
As applied to Tables 6, 7, and 8, Recommended Operating Conditions are used as test conditions unless otherwise specified.
External voltage reference used with RSET = 324
,
VREF1 = 1.235V.
Table 12. Timing
Symbol
VDD
AVDD
DVDD
T
A
R
L
VREF1
VREF2
Description
Min
4.75
Typ
5.00
5.00
5.00
25
37.5
1.235
2.5
Max
5.25
Units
V
DAC power supply voltage
Analog supply voltage
Digital supply voltage
Ambient operating temperature
3
Output load to DAC outputs
ADC voltage reference input/output
Internal voltage reference
0
70
°
C
Ohms
V
V
1.14
1.26
Table 10. Electrical Characteristics (Operating Conditions: T
A
= 0
o
C - 70
o
C, V
DD
= 5V ± 5%)
Symbol
Description
Min
8
Typ
8
33.89
Max
8
Unit
Bits
mA
Video D/A resolution
Full scale output current
Video level error
using external reference
using internal reference
VREF1 input current (VREF1 = 1.235V)
Total Current Consumption
5
10
%
%
IREF1
10
345
μ
A
mA
Table 11. Digital Inputs / Outputs
Symbol
V
OH
V
OL
V
IH
Description
Test Condition @ T
A
= 25
O
C
Ioh = - 400 mA
Iol = 3.2 mA
Min
2.4
Typ
Max
Unit
V
V
V
Output high voltage
Output low voltage
Input high voltage
0.4
Vdd +
0.5
0.8
25
10
2.0
V
IL
I
PU
I
LK
CD
IN
CD
OUT
Input low voltage
Input internal pull-up current
Input leakage current
Input capacitance
Output capacitance
GND - 0.5
5
-10
V
mA
mA
pF
pF
f = 1 MHz, Vin = 2.4V
7
10
Symbol
Description
Min
Typ
Max
Unit
t
1
Sync to external clock
setup time
2
nS
t
2
Sync to external clock
hold time
2
nS
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