EM19101
EM19101
8-BIT
A/D CONVERTER (CMOS)
8-BIT 5 MSPS
5 MSPS A/D CONVERTER (CMOS)
GENERAL DESCRIPTION
EM19101 is a 8-bit CMOS A/D converter for scanner use. The adoption of a 2-step parallel system achieves low
consumption at a maximum conversion speed of 7 MSPS.
FEATURES
•
•
•
•
•
•
•
7MSPS maximum conversion speed
Build-in sampling and hold circuit
Internal self-bias reference voltage
45 mW very low power dissipation at 5MSPS
+5V single power supply
Available in 24 pin SOP
Series
EM19101M for 300 mil SOP
EM19101S for 209 mil SOP
APPLICATION
Scanner and a wide range of fields where high speed A/D conversion is required in the digital communication.
PIN ASSIGNMENT
EM19101
OE
DVSS
D0
D1
D2
D3
D4
D5
D6
D7
DVDD
CLK
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
DVSS
VRB
VRBS
AVSS
AVSS
VIN
AVDD
VRT
VRTS
AVDD
AVDD
DVDD
FUNCTIONAL BLOCK DIAGRAM
/O E
DVS S
D0
1
Reference voltage
24
23
22
DV S S
2
3
VRB
V RBS
D1
D2
4
Lower data
latches
5
Lower encoder
(4bit)
Lower
Comparators with
S/ H (4bit)
21
AVSS
20
19
AVSS
VI N
AV DD
D3
D4
6
7
8
Upper data
latches
18
17
D5
D6
V RT
V RT S
9
Upper encoder
(4bit)
10
D7
Upper
Comparators with
S/ H (4bit)
16
15
14
AV DD
DV DD 1 1
CL K 1 2
Clock generator
AV DD
DV DD
13
* This specification are subject to be changed without notice.
4.23.1997
1