FUJITSU MB40528

FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-28206-2E
ASSP
1 Channel 8-bit A/D
Converter
MB40528
■
DESCRIPTION
The MB40528 is a full parallel comparison (flash) type 8-bit resolution analog-to-digital converter, designed for
various video and image processing applications.
The MB40528 has 8-bit resolution 1 channel A/D converter. Input analog data are converted into digital data by
the A/D converter in minimum 60 Mega samples per seconds (MSPS).
The analog data is provided in a range of DC +3V to +5V (2Vp-p level) and the output digital data in TTL level.
The MB40528 is fabricated by the Fujitsu’s advanced bipolar process and housed in a 20-pin plastic DIP/SOP.
The MB40528 is suitable for various video and image applications.
■
FEATURES
•
•
•
•
•
•
•
•
•
•
•
■
Conversion method : Full parallel comparison type
8-bit x 1 channel A/D converter
Max. 60 MHz input clock frequency providing 60 MSPS data conversion rate
Linearity error : Typical +/-0.15%
Analog input voltage range : 3V to 5V (2Vp-p level)
Digital input/output voltage level : TTL level
On-chip reference voltage generator
Low power consumption : Typical 400mW
Single +5V power supply
Operating temperature range : -20°C to +70°C
Fujitsu’s advanced bipolar process
PACKAGES
20-pin Plastic DIP
20-pin Plastic SOP
(DIP-20P-M01)
(FPT-20P-M05)
1
MB40528
■
PIN ASSIMENT
(TOP-VIEW)
GND
1
20
GND
(LSB) D8
2
19
VCC
D7
3
18
VCC
D6
4
17
VRB
D5
5
16
VINA
D4
6
15
VRM
D3
7
14
VCC
D2
8
13
VCC
(MSB) D1
9
12
GND
CLK
10
11
GND
(DIP-20P-M01)
(FPT-20P-M05)
2
MB40528
■
BLOCK DIAGRAM
VCC
13
CLK
10
VINA
16
14
18
19
VCC
R1
1
R
2
R
9
D1 (MSB)
8
D2
7
D3
6
D4
5
D5
4
D6
3
D7
2
D8 (LSB)
127
255 to 8
ENCODER
R/2
VRM
15
R/2
LATCH
&
BUFFER
128
R
254
R
255
R2
VRB
REFERENCE VOLTAGE
GENERATOR
17
0.6 x VCC
1
11
12
20
GND
3
MB40528
■
PIN DESCRIPTION
Symbol
Pin No.
Type
Name & Function
VCC
13, 14, 18, 19
-
+5 V DC power supply pins.
GND
1, 11, 12, 20
-
Ground pins.
10
I
Clock input pin. The input voltage is a TTL level.
16
I
Analog signal input pin. The analog data to be converted is input to
this pin. The input voltage range is 3V to 5V (VRB to VCC).
O
8-bit resolution A/D converter outputs.
The output voltage is a TTL level.
Also, D1 pin is an MSB and D8 pin is a LSB.
17
O
Reference voltage output pin. This pin outputs 0.6 x VCC [V] (Typ.
3V). An 1µF or more capacitor having superior frequency
characteristic should be connected to this pin. The capacitor must
be connected near the device.
15
O
An intermediate voltage output pin. An intermediate voltage
between VCC and VRB (Typ. 4V) is output from this pin. Normally
this pin is left open.
Power Supply
Clock
CLK
Analog Input
VINA
Digidal Output
D1
9
D2
8
D3
7
D4
6
D5
5
D6
4
D7
3
D8
2
Refernce Voltage Output
VRB
Others
VRM
4
MB40528
■
ABSOLUTE MAXIMUM RATINGS
(GND = 0 V)
Parameter
Symbol
Condition
Supply Voltage
VCC
Analog Input Voltage
Rating
Unit
Min.
Max.
–
-0.5
+7.0
V
VINA
–
-0.5
VCC +0.5
V
Digital Input Voltage
VIND
–
-0.5
+7.0
V
Storage Temperature
Tstg
–
-55
+125
°C
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
■
RECOMMENDED OPERATING CONDITIONS
(GND = 0 V)
Parameter
Symbol
Condition
Supply Voltage
VCC
Analog Input Voltage
Value
Unit
Min.
Typ.
Max.
–
4.75
5.00
5.25
V
VINA
–
VRB
–
VCC
V
Digital “H” Level Input Voltage
VIHD
–
2.0
–
–
V
Digital “L” Level Input Voltage
VILD
–
–
–
0.8
V
Digital “H” Level Output Current
IOH
–
-400
–
–
µA
Digital “L” Level Output Current
IOL
–
–
–
1.6
mA
Clock Frequency
fCLK
–
–
–
60
MHz
Minimum Clock “H” Level Pulse Width
twH
–
7.0
–
–
ns
Minimum Clock “L” Level Pulse Width
twL
–
8.0
–
–
ns
Operating Ambient Temperature
Ta
–
-20
–
70
°C
WARNING: The recommended operating conditions are required in order to ensure the normal operation of the
semiconductor device. All of the device’s electrical characteristics are warranted when the device is
operated within these ranges.
Always use semiconductor devices within their recommended operating conditionranges. Operation
outside these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented on
the data sheet. Users considering application outside the listed conditions are advised to contact their
FUJITSU representatives beforehand.
5
MB40528
■
ELECTRICAL CHARACTERISTICS
1. DC CHARACTERISTICS
(1) Analog Block
Parameter
Symbol
Condition
–
Value
Unit
Min.
Typ.
Max.
–
–
8
–
bit
LE
DC Accuracy
–
±0.15
±0.3
%
Differentioal Linearity Error
DLE
DC Accuracy
–
0.12
–
%
Analog Input Equivalent
Resister
RINA
–
0.2
1.5
–
MΩ
Analog Input Capacitance
CINA
–
–
40
–
pF
Analog “H” Level Input Current
IIHA
VINA = VCC
–
–
210
µA
Analog “L” Level Input Current
IILA
VINA = VREF
–
–
200
µA
Reference Voltage
VRB
–
0.6VCC-0.1
0.6VCC
0.6VCC+0.1
V
Supply Current
ICC
–
–
80*
150
mA
Parameter
Symbol
Condition
Digital “H” Level Output Voltage
VOHD
Digital “L” Level Output Voltage
Resolution
Linearity Error
* : VCC = 5.0V, Ta = +25°C
(2) Digital Block
Value
Unit
Min.
Typ.
Max.
IOH =-400µA
2.7
–
–
V
VOLD
IOL = 1.6mA
–
–
0.4
V
Digital “H” Level Input Voltage
VIHD
–
2.0
–
–
V
Digital “L” Level Input Voltage
VILD
–
–
–
0.8
V
Digital “H” Level Input Current
IIHD
–
–
–
20
µA
Digital “L” Level Input Current
IILD
–
-100
–
–
µA
Symbol
Condition
Maximum Conversion Rate
fs
Digital Output Delay Time
tpd
2. AC CHARACTERISTICS
Parameter
6
Value
Unit
Min.
Typ.
Max.
–
60
–
–
MSPS
–
5.0
8.5
15
ns
MB40528
Figure 1. AC Timing Chart
twH
twL
A/D Converter
Input Clock
(CLK)
Analog Signal
Input
(VINA)
3V
1.5V
0V
Sample N
Sample N+1
Sample N+2
tpd
Digital Data
Output
(D1 ~ D8)
VOHD
1.5V
DATA N-1
DATA N
DATA N+1
VOLD
7
MB40528
■
EQUIVALENT CIRCUITS
Figure 2. Analog Input Equivalent Circuit
VCC
VCC
VINA
VINA
VD
RINA
CINA
IBIAS
GND
GND
x 255 CIRCUITS
CINA: Non-linear Emitter-follower Junction Capacitance
RINA: Linear Resistance Model for Input Current Transition by Comparator Switching:
finite value for VINA < VRB or when CLK = “H” level
VRB: Voltage at VRB pin (Not the VRB pin itself)
IBIAS: Constant Input Bias Current
VD:
The base-collector junction diode of emitter-follower transistor.
Figure 3. Reference Voltage Circuit
VCC
20kΩ
Buffer
VRB pin
IRB
30kΩ
GND
8
VRB
MB40528
Figure 4. Digital Input Equivalent Circuit
VCC
50kΩ
6.5kΩ
3.2kΩ
50kΩ
3.2kΩ
VREF = 1.4V
Clock Input
GND
Figure 5. Output Buffer Load Circuit
To Test Pin
Test Point
CL
CL = 15pF
GND
Note : CL includes the parasitic capacitance of JIG.
9
MB40528
LINEARITY ERROR
1. Ideal Conversion Characteristic
■
STEP
OUTPUT CODE
255
11111111
254
11111110
253
11111101
129
10000001
128
10000000
127
01111111
2
00000010
1
00000001
0
00000000
VZT ≅ 3.006 V
VFT ≅ 4.996 V
VINA
VZT and VFT are the typical values when VCC = 5 V and VRB = 3 V.
2. Actual Conversion Characteristic
STEP
OUTPUT CODE
255
11111111
254
11111110
253
11111101
LE253
129
10000001
128
10000000
127
01111111
LE129
LE128
LE127
2
00000010
1
00000001
0
00000000
LEnmax
= Linearity Error
FS
LE2
LE1
VZT
VINA
VFT
NOTE: Refer to “■ELECTRICAL CHARACTERISTICS” for a range of VINA inputs.
10
MB40528
■
NOTES ON USE
1. Power Supply Patterns of the PCB
The power supply wire patterns (VCC and GND patterns) of the PCB should be designed as wide as possible in order to
reduce parasitic impedance.
Also, the VCC and GND patterns which are connected to the VCC and GND pins of the device must be handled and designed
as analog system pattern and so, their circuit patterns must be separate from digital system patterns of other peripheral
devices.
2. Switching Noise
In order to reduce switching noise as much as possible, high-frequency bypass capacitor must be connected between VCC
and GND pins and VRB and GND pins.
In this case, the capacitor should be connected to the pins as near as possible.
■
ORDERING INFORMATION
Part number
Package
MB40528P
20-pin Plastic DIP
(DIP-20P-M01)
MB40528PF
20-pin Plastic SOP
(FPT-20P-M05)
Remarks
11
MB40528
■
PACKAGE DIMENSIONS
20-pin Plastic DIP
(DIP-20P-M01)
+0.20
24.64 –0.30
+.008
.970 –.012
INDEX-1
6.60±0.25
(.260±.010)
INDEX-2
0.51(.020)MIN
4.36(.172)MAX
0.25±0.05
(.010±.002)
3.00(.118)MIN
0.46±0.08
(.018±.003)
+0.30
0.86 –0
+.012
.034 –0
1.27(.050)
MAX
C
1994 FUJITSU LIMITED D20005S-3C-3
+0.30
1.27 –0
+.012
.050 –0
7.62(.300)
TYP
15°MAX
2.54(.100)
TYP
Dimensions in mm (inches)
(Continued)
12
MB40528
(Continued)
20-pin Plastic SOP
(FPT-20P-M05)
+0.25
+.010
12.70 –0.20 .500 –.008
2.80(.110)MAX
(Mounting height)
0.05(.002)MIN
(STAND OFF)
7.60±0.30
(.299±.012)
10.20±0.40
(.402±.016)
9.20±0.30
(.362±.012)
1 PIN INDEX
1.27(.050)TYP
0.45±0.10
(.018±.004)
+0.05
Ø0.13(.005)
M
0.15 –0.02
0.50±0.20(.020±.008)
+.002
.006 –.001
Details of "A" part
0.20(.008)
0.10(.004)
11.43(.450)REF
"A"
0.60(.024)
0.18(.007)MAX
0.68(.027)MAX
C
1994 FUJITSU LIMITED F20015S-3C-2
Dimensions in mm (inches)
13
MB40528
FUJITSU LIMITED
For further information please contact:
Japan
FUJITSU LIMITED
Corporate Global Business Support Division
Electronic Devices
KAWASAKI PLANT, 4-1-1, Kamikodanaka,
Nakahara-ku, Kawasaki-shi,
Kanagawa 211-8588, Japan
Tel: +81-44-754-3763
Fax: +81-44-754-3329
http://www.fujitsu.co.jp/
North and South America
FUJITSU MICROELECTRONICS, INC.
3545 North First Street,
San Jose, CA 95134-1804, USA
Tel: +1-408-922-9000
Fax: +1-408-922-9179
Customer Response Center
Mon. - Fri.: 7 am - 5 pm (PST)
Tel: +1-800-866-8608
Fax: +1-408-922-9179
http://www.fujitsumicro.com/
Europe
FUJITSU MICROELECTRONICS EUROPE GmbH
Am Siebenstein 6-10,
D-63303 Dreieich-Buchschlag,
Germany
Tel: +49-6103-690-0
Fax: +49-6103-690-122
http://www.fujitsu-fme.com/
Asia Pacific
FUJITSU MICROELECTRONICS ASIA PTE LTD
#05-08, 151 Lorong Chuan,
New Tech Park,
Singapore 556741
Tel: +65-281-0770
Fax: +65-281-0220
http://www.fmap.com.sg/
F0001
 FUJITSU LIMITED Printed in Japan
All Rights Reserved.
The contents of this document are subject to change without
notice.
Customers are advised to consult with FUJITSU sales
representatives before ordering.
The information and circuit diagrams in this document are
presented as examples of semiconductor device applications,
and are not intended to be incorporated in devices for actual use.
Also, FUJITSU is unable to assume responsibility for
infringement of any patent rights or other rights of third parties
arising from the use of this information or circuit diagrams.
The contents of this document may not be reproduced or copied
without the permission of FUJITSU LIMITED.
FUJITSU semiconductor devices are intended for use in
standard applications (computers, office automation and other
office equipments, industrial, communications, and
measurement equipments, personal or household devices, etc.).
CAUTION:
Customers considering the use of our products in special
applications where failure or abnormal operation may directly
affect human lives or cause physical injury or property damage,
or where extremely high levels of reliability are demanded
(such as aerospace systems, atomic energy controls, sea floor
repeaters, vehicle operating controls, medical devices for life
support, etc.) are requested to consult with FUJITSU sales
representatives before such use. The company will not be
responsible for damages arising from such use without prior
approval.
Any semiconductor devices have inherently a certain rate of
failure. You must protect against injury, damage or loss from
such failures by incorporating safety design measures into your
facility and equipment such as redundancy, fire protection, and
prevention of over-current levels and other abnormal operating
conditions.
If any products described in this document represent goods or
technologies subject to certain restrictions on export under the
Foreign Exchange and Foreign Trade Control Law of Japan, the
prior authorization by Japanese government should be required
for export of those products from Japan.