Panasonic MN6556A, MN6556AS Datasheet

A/D, D/C Converters for Image Signal Processing

MN6556A, MN6556AS

Low Power 8-Bit CMOS D/A Converters for Image Processing

Overview

The MN6556A and MN6556AS are 8-bit CMOS digi­tal-to-analog converters with a maximum conversion rate
of 20 MSPS.

They use both a matrix cell and weighted current tech­nology to achieve a low power consumption of only 50
mW . Output has an amplitude of one volt abo ve the ground
level.

Features

Maximum conversion rate: 20 MSPS (min.)
Linearity error: ±0.3 LSB (typ.)
Differential linearity error: ±0.3 LSB (typ.)
Power supply voltage: 5.0±0.5 V
Power consumption: 50 mW (typ.)
Full scale current: 5 mA (typ.)

Applications

Digital television
Digital video equipment
Digital image processing equipment
Measuring instrument

Pin Assignment

MN6556A : DIP022-P-0400
MN6556AS : SOP022-P-0375

AV
AV

VC

VIB

COMP

V

REF

I

REF

AV

N.C.
N.C.

DD

DD

1
2
3

I

O

4
5
6
7
8
9

SS

10
11

(TOP VIEW)

22
21
20
19
18
17
16
15
14
13
12

DV
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
CLK
DV

SS

DD

1

MN6556A, MN6556AS A/D, D/C Converters for Image Signal Processing

Block Diagram

+

–

DB4

DB5

V

I

R

DB3

REF
REF

REF

COMP

6

13

CLK

17

18

DB6

19

7
8

Current
Source

X-Decoder

Latch

16

20

1/2

DB7

Latch

1/4

21

DB8

(LSB)

DB2

DB1
(MSB)

15

N.C.

12

Latch

DD

DV

Matrix Current Cell

22

1

SS

DV

2

DD

AVDDAV

SS

AV

5

VIB

9

4

VC

+

–

10

Y-Decoder

11

14

N.C.

3

I

O

R

OUT

2