19-0155; Rev 3; 12/10
Quad, Serial 8-Bit DACs
with Rail-to-Rail Outputs
The MAX509/MAX510 are quad, serial-input, 8-bit voltage-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 reference input range includes both supply rails.
The MAX509 has four separate reference inputs, allowing 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 reference inputs, each shared by two DACs. The MAX510
is housed in space-saving 16-pin DIP and SO packages.
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 registers can be updated independently or simultaneously
with single software commands. Two additional asynchronous control pins provide simultaneous updating
(LDAC) or clearing (CLR) of input and DAC registers.
The interface is compatible with MICROWIRE TM and
SPI/QSPI TM . All digital inputs and outputs are
TTL/CMOS compatible. A buffered data output provides
for readback or daisy-chaining of serial devices.
_______________Functional Diagrams
DOUT
CLR
LDAC AGND DGND VSS VDD REFB
DECODE
CONTROL
Single +5V or Dual ±5V Supply Operation
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
(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
______________Ordering Information
PART
MAX509ACPP+
MAX509BCPP+
MAX509ACWP+
MAX509BCWP+
MAX509ACAP+
TEMP RANGE
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
DAC
REG A
_________________Pin Configurations
OUTB 1
20 OUTC
OUTA 2
DAC A
OUTB
DAC
REG B
DAC B
19 OUTD
SR
CONTROL
INPUT
REG D
DAC
REG C
REFB 4
18 VDD
MAX509
17 REFC
REFA 5
OUTC
INPUT
REG C
±1
±1.5
±1
±1.5
±1
TOP VIEW
OUTA
INPUT
REG B
20 PDIP
20 PDIP
20 Wide SO
20 Wide SO
20 SSOP
TUE
(LSB)
Ordering Information continued on last page.
**Contact factory for availability and processing to MIL-STD-883.
+Denotes a lead(Pb)-free/RoHS-compliant package.
VSS 3
12-BIT
SHIFT
REGISTER
PIN-PACKAGE
REFA
MAX509
INPUT
REG A
____________________________Features
♦
♦
♦
♦
♦
DAC C
16 REFD
AGND 6
15 CS
N.C. 7
14 N.C.
DGND 8
OUTD
DAC
REG D
DAC D
13 SCLK
LDAC 9
12 DIN
DOUT 10
11
CLR
DIP/SO/SSOP
CS DIN SCLK
REFC
REFD
Functional Diagrams continued at end of data sheet.
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
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.
1
MAX509/MAX510
_______________General Description
