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CXA1977R Datasheet

  • CXA1977R

  • 10-bit 20MSPS A/D Converter

  • 16頁

  • SONY   SONY

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CXA1977R
10-bit 20MSPS A/D Converter
Description
The CXA1977R is a 10-bit 20MSPS 2-step parallel
type A/D converter for video signal processing.
This A/D converter operates on +5V power
supplies. The analog signal can be converted to the
digital signal by using this IC in conjunction with the
Sample-and-hold IC.
Features
鈥?Maximum operating speed : 20MSPS (Min.)
鈥?Resolution
鈥?Low power dissipation
鈥?Wide-band analog input
鈥?Low input capacitance
鈥?Built-in digital correction
: 10-bit
: 160mW (Typ.)
: 10MHz
: 50pF (Typ.)
Function
10-bit 20MSPS 2-step parallel type A/D converter
Structure
Bipolar silicon monolithic IC
Applications
High resolution video signal processing
48 pin LQFP (Plastic)
(Compensation within 鹵16LSB)
鈥?TTL input
鈥?TTL output
鈥?Output code : binary/2'S complement/1'S complement
Block Diagram
VREFBS
VREFB
VREF3
VREF2
VREF1
VREFT
VREFTS
N.C.
36
N.C. 37
N.C. 38
35
34
33
32
N.C.
31
30
29
28
27
26
25
24 PS
23 ENABLE
DV
CC
3
N.C.
DV
CC
3
L-COMPARATOR
L-ENCORDER
VINL 39
VINH 40
N.C. 41
AV
CC
42
N.C. 43
H-ENCODER
AGND 44
DV
CC
2 45
UNDER 46
OVER 47
DGND1 48
1
2
3
4
5
6
7
8
OVER/UNDER
OUTPUT BUFFER
FINE OUTPUT
BUFFER
MATRIX
H-COMPARATOR
22 CLK
CLK BUFFER
21 MINV
20 LINV
19 N.C.
18 DV
CC
3
17 DGND2
16 DGND1
CORRECTION
COARSE OUTPUT
BUFFER
15 DV
CC
1
14 DGND1
13 N.C.
9
10
11
12
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
鈥?鈥?/div>
(MSB) D9
(LSB) D0
DGND1
D1
D2
D3
D4
N.C.
D5
D6
D7
D8
E94326-PS

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