EM19100
8-BIT 20 MSPS VIDEO A/D CONVERTER (CMOS)
OUTPUT CODING
Step
0
1
2
....
124
125
....
254
255
Analog Input (V)
0.607815
0.607815~0.6156250
0.6156250~0.6234375
....
1.6000000~1.6078125
1.6078125~1.6156250
....
2.5843750~2.5921875
2.5921875~
Digital Output Code
00000000
00000001
00000010
....
10000000
10000001
....
11111110
11111111
Conditions
VRB=0.6V
VRT=2.6V
1LSB=7.8125mV
Clock
Analog input
N
N+1
N+2
N+ 3
N+ 4
Data output
N-3
N- 2
N- 1
N
N+ 1
ABSOLUTE MAXIMUM RATINGS
(T
A
=25°C)
Items
Supply voltage
Operating temperature
Input voltage
Ref, Input voltage
Sym.
V
DD
T
OPR
V
IN
V
RT
,V
RB
Rating
7
-20 to +65
V
SS
to V
DD
V
SS
to V
DD
Unit
V
°C
V
V
(F
C
=20MPS,V
DD
=5V,V
RB
=0.5V,V
RT
=2.5V,Ta=25 deg.)
Parameter
Sym.
Conditions
Maximum Conversion Speed
F
C
Vin=0.6V to 2.6V fin=1kHz ramp
Supply current
I
DD
F
C
=20MSPS NTSC ramp wave input
Reference pin current
I
REF
Analog input bandwidth
BW
Analog input capacitance
C
IN
V
IN
=1.5V+0.07Vrms
Reference resistance
R
REF
Internal bias
V
RB
Short V
RB
and V
RBS
V
RT
-V
RB
Short V
RT
and V
RTS
Offset Voltage
E
OT
E
OB
Digital input voltage
V
IH
V
IL
Digital input current
I
IH
V
DD
=max.
V
IH
=V
DD
I
IL
V
IL
=0V
* This specification are subject to be changed without notice.
Min. Typ. Max.
20
12
17
5.7
8.0 9.1
10
11
220 250 350
0.55 0.6 0.65
1.9
2.0 2.1
-10
-35 -60
0
15
45
4.0
1.0
5
5
Unit
MSPS
mA
mA
MHz
pF
Ω
V
mV
V
uA
1.26.1996
2
EMC [ ELAN MICROELECTRONICS CORP ]
