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Электронный компонент: MAS9184A

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1
DA9184A.001
September 7, 1998
MAS9184A
12 X 8-bit D to A Converter
12-bit serial data input
Highly stable output buffer
Serial data output for Daisy-Chaining
DESCRIPTION
The MAS9184 is a CMOS structured integrated
circuit with 12 built-in D to A converter channels and
12 corresponding output buffer operational
amplifiers. A simple 3-wire serial interface transfers
digital data from the micro controller. The output
buffers operate in the entire voltage range from
ground to the positive power supply rail.
FEATURES
APPLICATION
Twelve 8-bit DACs on a single monolithic chip
Voltage level output
SO 20 package
Single +5V supply
Power-on reset
High resolution monitors
Automatic gain control
Trimmer replacement
BLOCK DIAGRAM
8-BIT DAC
8-BIT DAC
8-BIT DAC
8-BIT DAC
8-BIT DAC
8-BIT DAC
8-BIT DAC
DAC7
8-BIT DAC
DAC6
DAC5
DAC4
DAC3
DAC2
DAC1
DAC0
VDD GND
8-BIT DAC
8-BIT DAC
8-BIT DAC
8-BIT DAC
DAC11
DAC10
DAC9
DAC8
D0
CLK
DI
LD
VCC VSS
12-bit
Shift
Register
Address
Decoder
8-bit data
2
DA9184A.001
September 7, 1998
PIN CONFIGURATION
PIN DESCRIPTION
Pin name
SO
Function
V
SS
1
D/A converter low level reference voltage input terminal
DAC2
2
8-bit D/A converter output terminal
DAC3
3
8-bit D/A converter output terminal
DAC4
4
8-bit D/A converter output terminal
DAC5
5
8-bit D/A converter output terminal
DAC6
6
8-bit D/A converter output terminal
DAC7
7
8-bit D/A converter output terminal
DAC8
8
8-bit D/A converter output terminal
DAC9
9
8-bit D/A converter output terminal
V
DD
10
D-A converter high level reference voltage input terminal
V
CC
11
Power supply terminal
DAC10
12
8-bit D/A converter output terminal
DAC11
13
8-bit D/A converter output terminal
DO
14
Serial data output terminal
LD
15
Latch data terminal
CLK
16
Serial clock input terminal
DI
17
Serial data input terminal
DAC0
18
8-bit D/A converter output terminal
DAC1
19
8-bit D/A converter output terminal
GND
20
Digital and analog ground
SO20
DAC1
DAC10
DO
V
ss
DAC2
DAC3
DAC4
1
2
3
4
5
6
7
8
13
14
15
16
17
18
GND
CLK
LD
19
20
DAC0
DI
DAC6
DAC5
DAC7
DAC8
DAC9
9
V
DD
10
12
11
DAC11
V
cc
3
DA9184A.001
September 7, 1998
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Conditions
Min
Max
Unit
Supply Voltage
V
CC
-0.3
7.0
V
High level reference voltage
V
DD
-0.3
7.0
V
Digital input voltage
Vin
-0.3
V
CC
+0.3
V
Output voltage
Vout
-0.3
V
CC
+0.3
V
Power dissipation
P
D
150
mW
Operating temperature
T
amb
-20
+85
o
C
Storage temperature
T
S
-55
+125
o
C
RECOMMENDED OPERATION CONDITIONS
(V
CC
=V
DD
= 5V10%, GND = V
SS
= 0V, Ta = -20
o
C to +85
o
C, unless otherwise noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Supply Voltage
V
CC
4.5
5.0
5.5
V
Supply current
I
CC
CLK = 1MHz
2.5
mA
Input leakage current
I
ILK
Vin = 0V to V
CC
-10
10
uA
4
DA9184A.001
September 7, 1998
ELECTRICAL CHARACTERISTICS
x
Digital inputs
(V
CC
=V
DD
= 5V10%, GND = V
SS
= 0V, Ta = -20
o
C to +85
o
C, unless otherwise noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Input low voltage
V
IL
3.0V
CC
V
Input high voltage
V
IH
0.7V
CC
V
x
Digital outputs
(V
CC
=V
DD
= 5V10%, GND = V
SS
= 0V, Ta = -20
o
C to +85
o
C, unless otherwise noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output low voltage
V
OL
I
OL
= 400uA
0.4
V
Output high voltage
V
OH
I
OH
= -400uA
V
CC
-0.4
V
x
Analog outputs
(V
CC
=V
DD
= 5V10%, GND = V
SS
= 0V, Ta = -20
o
C to +85
o
C, unless otherwise noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Reference voltage pin current
I
DD
30
50
80
uA
D/A high level reference
voltage range
V
DD
3.0
V
CC
V
D/A low level reference
voltage range
V
SS
GND
V
CC
-3.0
V
Buffer amplifier output
V
AO
I
AO
= 100uA
0.1
V
CC
-0.1
V
voltage range
I
AO
= 500uA
0.2
V
CC
-0.2
V
Buffer amplifier output drive
range
I
AO
-5.0
5.0
mA
Differential nonlinearity
S
DL
-1.0
1.0
LSB
Nonlinearity
S
L
-1.5
1.5
LSB
Zero code error
S
ZERO
-1.0
1.0
LSB
Full scale error
S
FULL
-1.0
1.0
LSB
Output capacitive load
C
L
0.1
uF
Buffer amplifier output
impedance
R
O
5
5
DA9184A.001
September 7, 1998
ELECTRICAL CHARACTERISTICS
x
AC Characteristics
(V
CC
=V
DD
= 5V10%, GND = V
SS
= 0V, Ta = -20
o
C to +85
o
C, unless otherwise noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Clock `L' pulse width
t
CKL
100
ns
Clock `H' pulse width
t
CKH
100
ns
Rise time
t
CR
200
ns
Fall time
t
CF
200
ns
Data setup time
t
DCH
30
ns
data hold time
t
CHD
70
ns
LD setup time
t
CHL
200
ns
LD hold time
t
LDC
100
ns
LD `H' pulse width
t
LDH
100
ns
Data output delay time
t
DO
70
350
ns
D/A output settling time
t
LDD
300
ns
Power-on reset level
V
CC
2.4
3.0
3.3
V
x
Timing diagram
CLK
DI
LD
DAC
OUT
DO
t
CR
t
CF
t
CKH
t
CKL
t
CHD
t
DCH
t
DO
t
CHL
t
LDH
t
LDC
t
LDO