1
DS04-13505-3E
FUJITSU SEMICONDUCTOR
DATA SHEET
LINEAR IC
8-Bit D/A Converter
with Operational Amplifier Output Buffers
MB88344/88344B
s
DESCRIPTION
MB88344/MB88344B are 8-bit 36 channels D/A converters which have two reference voltages to use 36 channels
as 12 channels and 24 channels independently.
Each output channels has an operational amplifier output buffer and so large current drive is possible.
In the MB88344B, 6 Channels of DAC output (AO
31
-AO
36
) have four data registers each and so, the analog output
can be changed by the address input from A0 and A1 pins.
Digital data are input to the devices in serial and it is controlled by CLK and LD pins. This configuration makes a
cascade connections between devices.
The MB88344/MB88344B are suitable for electronic volumes and replacement for potentiometers for adjustment,
in addition to normal D/A converter applications.
s
FEATURES
Ultra low power consumption : Type. 1.1mW/channel
Ultra small package
Conversion method : R-2R resistor ladder
On-chip operational amplifier output buffers : Max. +1.0/1.0mA analog output sink/source current capability
Analog data output range : 0 to V
CC
[V]
Two analog output reference voltage : Analog data can be output in different reference voltages.
(Continued)
s
PACKAGES
48 pin, Plastic LQFP
48 pin, Plastic QFP
48 pin, Plastic SH-DIP
This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields. However, it is advised that normal precautions
be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit.
(DIP-48P-M01)
(FPT-48P-M16)
(FPT-48P-M05)
2
MB88344/MB88344B
(Continued)
For data resisters for AO
31
-AO
36
channels (MB88344B only) : Analog output can be changed by the A0 and
A1 analog block.
Separate supply voltge for digital block and analog block.
Direct control can be done from 3 V-system MCU:
MB88344 : Input "H" Voltage = 0.5 V
CC
, Input "L" Voltage = 0.2 V
CC
MB88344B : Input "H" Voltage = 2.1 V, Input "L" Voltage = 0.6 V
Max. 2.5 MHz serial data input
Silicon-gate CMOS process
Package options:
MB88344: 48-pin plastic SH-DIP/QFP/LQFP
MB88344B: 48-pin plastic SH-DIP/LQFP
3
MB88344/MB88344B
s
PIN ASSIGNMENTS
MB88344
(Continued)
MB88344
MB88344B
Number of digital for AO
31
to AO
36
1
4
Shift register
14-bit
16-bit
Shift register format
MSB first
LSB first
Package
SH-DIP-48P/QFP-48P/LQFP-48P
SH-DIP-48P/LQFP-48P
INDEX
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
V
DD2
V
SS2
AO32
AO33
AO34
AO35
AO36
AO1
AO2
AO3
AO4
AO5
AO6
AO7
AO8
AO9
AO10
AO11
NC
DI
CLK
LD
DO
GND
V
CC
AO31
AO30
AO29
AO28
NC
AO27
AO26
AO25
AO24
AO23
AO22
AO21
AO20
AO19
AO18
AO17
AO16
AO15
AO14
AO13
AO12
V
DD1
V
SS1
(DIP-48P-M01)
5
MB88344/MB88344B
MB88344B
AO
3
5
AO
3
4
AO
3
3
AO
3
2
V
SS2
V
DD2
A0
V
CC
AO
3
1
AO
3
0
AO
2
9
AO
2
8
DI
CLK
LD
DO
GND
A1
V
SS1
V
DD1
AO
1
2
AO
1
3
AO
1
4
AO
1
5
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
V
DD2
V
SS2
AO32
AO33
AO34
AO35
AO36
AO1
AO2
AO3
AO4
AO5
AO6
AO7
AO8
AO9
AO10
AO11
DI
CLK
LD
DO
GND
A1
A0
V
CC
AO31
AO30
AO29
AO28
AO27
AO26
AO25
AO24
AO23
AO22
AO21
AO20
AO19
AO18
AO17
AO16
AO15
AO14
AO13
AO12
V
DD1
V
SS1
(DIP-48P-M01)
INDEX
AO27
AO26
AO25
AO24
AO23
AO22
AO21
AO20
AO19
AO18
AO17
AO16
INDEX
AO36
AO1
AO2
AO3
AO4
AO5
AO6
AO7
AO8
AO9
AO10
AO11
(TOP VIEW)
(FPT-48P-M05)
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1
2
3
4
5
6
7
8
9
10
11
12
PDF 
ZIP