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A/D, D/C Converters for Image Signal Processing
MN655431SH
Low Power 8-Bit CMOS A/D Converter for Image Processing
Overview
The MN655431SH is an 8-bit CMOS analog-to-digital
converter with a maximum conversion rate of 15 MSPS.
It uses a half flash structure based on chopper com-
parators and achieves both high speed and low power con-
sumption with multiplex processing.
It provides separate power supply pins for the circuits
driving the low-voltage digital output pins.
Features
Maximum conversion rate: 15 MSPS (min.)
Linearity error: ±0.5 LSB (typ.)
Differential linearity error: ±0.4 LSB (typ.)
Power supply voltage: 4.40 to 5.25 V
Power consumption: 90 mW (typ.)
Applications
Digital television receivers
Digital video equipment
Digital image processing equipment
Pin Assignment
SSOP024-P-0300
(TOP VIEW)
DV
DDL
DV
SS
(LSB) D0
D1
D2
D3
D4
D5
D6
(MSB) D7
DV
DD
CLK
DV
SS
V
RB
V
RBS
AV
SS
AV
SS
V
IN
AV
DD
V
RT
V
RTS
AV
DD
AV
DD
DV
DD
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
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A/D, D/C Converters for Image Signal Processing MN655431SH
Absolute Maximum Ratings Ta=25˚C
Parameter Symbol Rating Unit
Power supply voltage V
DD
– 0.3 to +7.0 V
Power supply voltage for digital outputs DV
DDL
– 0.3 to +V
DD
+0.3 V
Input voltage V
I
AV
SS
– 0.3 to V
DD
+0.3 V
Output voltage V
O
DV
SS
– 0.3 to V
DD
+0.3 V
Operating ambient temperature T
opr
–20 to +70 ˚C
Storage temperature T
stg
–55 to +125 ˚C
Pin Descriptions
Pin No. Symbol Function Description
1DV
DDL
Power supply for digital output circuits
2DV
SS
Ground for digital circuits
3 D0 Digital output (LSB)
4 D1 Digital output
5 D2 Digital output
6 D3 Digital output
7 D4 Digital output
8 D5 Digital output
9 D6 Digital output
10 D7 Digital output (MSB)
11 DV
DD
Power supply for digital circuits
12 CLK Sampling clock
13 DV
DD
Power supply for digital circuits
14 AV
DD
Power supply for analog circuits
15 AV
DD
Power supply for analog circuits
16 V
RTS
Power supply for reference voltage (TOP)
17 V
RT
Reference voltage (TOP)
18 AV
DD
Power supply for analog circuits
19 V
IN
Analog input
20 AV
SS
Ground for analog circuits
21 AV
SS
Ground for analog circuits
22 V
RBS
Power supply for reference voltage (BOTTOM)
23 V
RB
Reference voltage (BOTTOM)
24 DV
SS
Ground for digital circuits
