19-0230; Rev 2a; 1/97
Calibrated, Quad, 12-Bit
Voltage-Output DACs with Serial Interface
_______________General Description
The MAX536/MAX537 combine four 12-bit, voltage-output
digital-to-analog converters (DACs) and four precision
output amplifiers in a space-saving 16-pin package.
Offset, gain, and linearity are factory calibrated to provide
the MAX536鈥檚 鹵1LSB total unadjusted error. The MAX537
operates with 鹵5V supplies, while the MAX536 uses -5V
and +12V to +15V supplies.
Each DAC has a double-buffered input, organized as
an input register followed by a DAC register. A 16-bit
serial word is used to load data into each input/DAC
register. The serial interface is compatible with either
SPI/QSPI鈩?or Microwire鈩? and allows the input and
DAC registers to be updated independently or simulta-
neously with a single software command. The DAC reg-
isters can be simultaneously updated with a hardware
LDAC
pin. All logic inputs are TTL/CMOS compatible.
____________________________Features
o
Four 12-Bit DACs with Output Buffers
o
Simultaneous or Independent Control of Four
DACs via a 3-Wire Serial Interface
o
Power-On Reset
o
SPI/QSPI and Microwire Compatible
o
鹵1LSB Total Unadjusted Error (MAX536)
o
Full 12-Bit Performance without Adjustments
o
鹵5V Supply Operation (MAX537)
o
Double-Buffered Digital Inputs
o
Buffered Voltage Output
o
16-Pin DIP/SO Packages
MAX536/MAX537
______________Ordering Information
PART
MAX536ACPE
MAX536BCPE
MAX536ACWE
MAX536BCWE
MAX536BC/D
MAX536AEPE
MAX536BEPE
MAX536AEWE
MAX536BEWE
MAX536AMDE
MAX536BMDE
TEMP. RANGE
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-55擄C to +125擄C
-55擄C to +125擄C
PIN-PACKAGE
16 Plastic DIP
16 Plastic DIP
16 Wide SO
16 Wide SO
Dice*
16 Plastic DIP
16 Plastic DIP
16 Wide SO
16 Wide SO
16 Ceramic SB**
16 Ceramic SB**
(LSB)
鹵
1
鈦?/div>
2
鹵1
鹵
1
鈦?/div>
2
鹵1
鹵1
鹵
1
鈦?/div>
2
鹵1
鹵
1
鈦?/div>
2
鹵1
鹵
1
鈦?/div>
2
鹵1
INL
________________________Applications
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control Devices
Remote Industrial Controls
Microprocessor-Controlled Systems
________________Functional Diagram
SDO
LDAC
DECODE
CONTROL
INPUT
REG A
INPUT
REG B
INPUT
REG C
INPUT
REG D
SR
CONTROL
CS
SCK
REFCD
DAC
REG A
DAC
REG B
DAC
REG C
DAC
REG D
V
DD
DGND
V
SS
TP REFAB
AGND
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
__________________Pin Configuration
MAX536/MAX537
OUTA
DAC A
OUTB
DAC B
OUTC
DAC C
OUTD
OUTB
1
OUTA
2
V
SS
3
AGND
4
REFAB
5
DGND
6
LDAC
7
SDI
8
16
OUTC
15
OUTD
14
V
DD
TOP VIEW
16-BIT
SHIFT
REGISTER
MAX536
MAX537
13
TP
12
REFCD
11
SDO
10
SCK
9
CS
DAC D
SDI
DIP/SO
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
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