EM19100 EM19100
8-BIT 20
8-BITVIDEO 20 MSPS A/D VIDEO A/D CONVERTER (CMOS) MSPS CONVERTER (CMOS)
GENERAL DESCRIPTION
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EM19100 EM19100
8-BIT 20
8-BITVIDEO 20 MSPS A/D VIDEO A/D CONVERTER (
CMOS) MSPS CONVERTER (
CMOS)
GENERAL DESCRIPTION
EM19100 is an 8-bit
CMOS A/D converter for video use. The adoption of a 2-step parallel system achieves low consumption at a maximum conversion speed of 20 MSPS typical.
FEATURES
20MSPS maximum conversion speed Build-in sampling and hold circuit Internal self-bias reference
voltage 90mW power dissipation at 20MSPS +5V single power supply Available in 24 pin SOP Series EM19100M for 300 mil SOP EM19100S for 209 mil SOP
APPLICATION
TV,VCR digital systems and a wide range of fields where high speed A/D conversion is required.
PIN ASSIGNMENT
EM19100
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 Lower encoder (4bit)
7 8
Upper data latches
Lower Comparators with S/ H (4bit)
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.
1.26.1996
1
EM19100
8-BIT 20 MSPS VIDEO A/D CONVERTER (
CMOS)
OUTPUT CODING
Step 0 1 2 .... 124 125 .... 254 25...