19-0155; Rev 2; 1/96
Qu a d , S e ria l 8 -Bit DACs
w it h Ra il-t o -Ra il Ou t p u t s
9/MAX510
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ Single +5V or Dual ±5V Supply Operation
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.
♦ Output Buffer Amplifiers Swing Rail-to-Rail
♦ Reference Input Range Includes Both Supply Rails
♦ Calibrated Offset, Gain, and Linearity (1LSB TUE)
♦ 10MHz Serial Interface, Compatible with 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.
(CPOL = CPHA = 0) and Microwire
♦ Double-Buffered Registers for Synchronous
Updating
♦ Serial Data Output for Daisy-Chaining
♦ Power-On Reset Clears Serial Interface and Sets
All Registers to Zero
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.
______________Ord e rin g In fo rm a t io n
TUE
(LSB)
PART
TEMP. RANGE PIN-PACKAGE
MAX509ACPP
MAX509BCPP
MAX509ACWP
MAX509BCWP
MAX509ACAP
MAX509BCAP
MAX509BC/D
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
0°C to +70°C
0°C to +70°C
20 Plastic DIP
20 Plastic DIP
20 Wide SO
20 Wide SO
20 SSOP
±1
±1 1/2
±1
The interface is compatible with MicrowireTM and SPI/
QSPITM
. All digital inputs and outputs are TTL/CMOS
±1 1/2
±1
compatible. A buffered data output provides for read-
back or daisy-chaining of serial devices.
20 SSOP
±1 1/2
±1 1/2
Dice*
Ordering Information continued on last page.
* Dice are specified at +25°C, DC parameters only.
_______________Fu n c t io n a l Dia g ra m s
**Contact factory for availability and processing to MIL-STD-883.
CLR
LDAC
DGND
AGND
V
SS
DOUT
V
DD
REFB REFA
_________________P in Co n fig u ra t io n s
MAX509
DECODE
CONTROL
TOP VIEW
OUTA
INPUT
REG A
DAC
REG A
DAC A
DAC B
DAC C
DAC D
OUTB
OUTA
OUTC
OUTD
V
1
2
20
19
OUTB
OUTC
OUTD
V
SS
3
18 DD
12-BIT
SHIFT
REGISTER
INPUT
REG B
DAC
REG B
REFB
REFC
4
MAX509
17
16
15
14
13
12
11
REFA
AGND
N.C.
REFD
CS
5
INPUT
REG C
6
DAC
REG C
N.C.
SCLK
DIN
7
DGND
LDAC
8
INPUT
REG D
DAC
REG D
SR
CONTROL
9
DOUT
CLR
10
REFD
DIP/SO/SSOP
SCLK
REFC
CS DIN
Pin Configurations continued at end of data sheet.
Microwire is a trademark of National Semiconductor. SPI and QSPI are trademarks of Motorola.
________________________________________________________________ Maxim Integrated Products
Functional Diagrams continued at end of data sheet.
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800