19-0155; Rev 3; 12/10
Quad, Serial 8-Bit DACs
with Rail-to-Rail Outputs
9/MAX510
_______________General Description
____________________________Features
♦ Single +5V or Dual 5V Suꢀꢀlꢁ ꢂꢀeraꢃion
♦ ꢂuꢃꢀuꢃ Buffer Amꢀlifiers Swing Rail-ꢃo-Rail
♦ Reference Inꢀuꢃ Range Includes Boꢃh Suꢀꢀlꢁ Rails
♦ Calibraꢃed ꢂffseꢃ, Gain, and Lineariꢃꢁ (1LSB TUE)
The MAX509/MAX510 are quad, serial-input, 8-bit volt-
age-output digital-to-analog converters (DACs). They
operate with a single +5V supply or dual 5V supplies.
Internal, precision buffers swing rail-to-rail. The refer-
ence input range includes both supply rails.
♦ 10MHz Serial Inꢃerface, Comꢀaꢃible wiꢃh SPI, QSPI
The MAX509 has four separate reference inputs, allow-
ing each DAC's full-scale range to be set independently.
20-pin DIP, SSOP, and SO packages are available. The
MAX510 is identical to the MAX509 except it has two ref-
erence inputs, each shared by two DACs. The MAX510
is housed in space-saving 16-pin DIP and SO packages.
(CPꢂL = CPHA = 0) and MICRꢂWIRE
♦ Double-Buffered Regisꢃers for Sꢁnchronous
Uꢀdaꢃing
♦ Serial Daꢃa ꢂuꢃꢀuꢃ for Daisꢁ-Chaining
♦ Power-ꢂn Reseꢃ Clears Serial Inꢃerface and Seꢃs
The serial interface is double-buffered: A 12-bit input
shift register is followed by four 8-bit buffer registers and
four 8-bit DAC registers. A 12-bit serial word is used to
load data into each register. Both input and DAC regis-
ters can be updated independently or simultaneously
with single software commands. Two additional asyn-
chronous control pins provide simultaneous updating
(LDAC) or clearing (CLR) of input and DAC registers.
All Regisꢃers ꢃo Zero
______________Ordering Information
TUE
(LSB)
PART
TEMP RANGE
PIN-PACKAGE
MAX509ACPP+
MAX509BCPP+
MAX509ACWP+
MAX509BCWP+
MAX509ACAP+
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
20 PDIP
20 PDIP
20 Wide SO
20 Wide SO
20 SSOP
1
1.5
1
1.5
1
T
he interface is compatible with MICROWIRETM and
SPI/QSPITM
.
All digital inputs and outputs are
TTL/CMOS compatible. A buffered data output provides
for readback or daisy-chaining of serial devices.
Ordering Information continued on last page.
**Contact factory for availability and processing to MIL-STD-883.
+Denotes a lead(Pb)-free/RoHS-compliant package.
_______________Functional Diagrams
_________________Pin Configurations
CLR
DGND
AGND
V
SS
DOUT
V
DD
REFB REFA
LDAC
TOP VIEW
MAX509
DECODE
CONTROL
OUTA
OUTB
OUTA
OUTC
OUTD
V
1
2
20
19
INPUT
REG A
DAC
REG A
DAC A
DAC B
DAC C
DAC D
V
SS
3
18 DD
OUTB
OUTC
OUTD
REFB
REFC
4
MAX509
17
16
15
14
13
12
11
12-BIT
SHIFT
REGISTER
INPUT
REG B
DAC
REG B
REFA
AGND
N.C.
REFD
CS
5
6
N.C.
SCLK
DIN
7
INPUT
REG C
DAC
REG C
DGND
LDAC
8
9
INPUT
REG D
DAC
REG D
SR
CONTROL
DOUT
CLR
10
DIP/SO/SSOP
REFD
Functional Diagrams continued at end of data sheet.
SCLK
REFC
CS DIN
Pin Configurations continued at end of data sheet.
MICROWIRE is a trademark of National Semiconductor Corp. SPI and QSPI are trademarks of Motorola.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.