19-0393; Rev 1; 9/02
2-Wire Serial 8-Bit DACs with
Rail-to-Rail Outputs
The MAX517/MAX518/MAX519 are 8-bit voltage output
digital-to-analog converters (DACs) with a simple 2-wire
serial interface that allows communication between
multiple devices. They operate from a single 5V supply
and their internal precision buffers allow the DAC outputs to swing rail-to-rail.
The MAX517 is a single DAC and the MAX518/MAX519
are dual DACs. The MAX518 uses the supply voltage
as the reference for both DACs. The MAX517 has a reference input for its single DAC and each of the
MAX519’s two DACs has its own reference input.
The MAX517/MAX518/MAX519 feature a serial interface
and internal software protocol, allowing communication
at data rates up to 400kbps. The interface, combined
with the double-buffered input configuration, allows the
DAC registers of the dual devices to be updated individually or simultaneously. In addition, the devices can
be put into a low-power shutdown mode that reduces
supply current to 4µA. Power-on reset ensures the DAC
outputs are at 0V when power is initially applied.
The MAX517/MAX518 are available in space-saving 8pin DIP and SO packages. The MAX519 comes in 16pin DIP and SO packages.
________________________Applications
____________________________Features
o
o
o
o
o
Single +5V Supply
Simple 2-Wire Serial Interface
I2C Compatible
Output Buffer Amplifiers Swing Rail-to-Rail
Space-Saving 8-pin DIP/SO Packages
(MAX517/MAX518)
o Reference Input Range Includes Both Supply Rails
(MAX517/MAX519)
o Power-On Reset Clears All Latches
o 4µA Power-Down Mode
______________Ordering Information
TEMP RANGE
MAX517ACPA
0°C to +70°C
8 Plastic DIP
1
MAX517BCPA
MAX517ACSA
MAX517BCSA
0°C to +70°C
0°C to +70°C
0°C to +70°C
8 Plastic DIP
8 SO
8 SO
1.5
1
1.5
MAX517BC/D
0°C to +70°C
Dice*
1.5
Ordering Information continued at end of data sheet.
*Dice are specified at TA = +25°C, DC parameters only.
**Contact factory for availability and processing to MIL-STD-883.
________________Functional Diagram
Minimum Component Analog Systems
Digital Offset/Gain Adjustment
Industrial Process Control
Automatic Test Equipment
Programmable Attenuators
VDD
7
REF
INPUT
LATCH 0
OUTPUT
LATCH 0
_________________Pin Configurations
TOP VIEW
8
OUT1 (REF0)
GND 2
7
VDD
6
AD0
5
AD1
MAX517
MAX518
SDA 4
8-BIT
SHIFT
REGISTER
SCL
SDA
ADDRESS
COMPARATOR
DAC1
OUT1
START/STOP
DETECTOR
MAX518
3
4
DIP/SO
( ) ARE FOR MAX517
Pin Configurations continued at end of data sheet.
OUT0
8
OUTPUT
LATCH 1
DECODE
SCL 3
1
DAC0
REF
INPUT
LATCH 1
OUT0 1
PIN-PACKAGE
TUE
(LSB)
PART
6
AD0
5
AD1
2
GND
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
MAX517/MAX518/MAX519
_______________General Description
