Rainbow Electronics MAX518 User Manual
_______________General Description
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
Minimum Component Analog Systems
Digital Offset/Gain Adjustment
Industrial Process Control
Automatic Test Equipment
Programmable Attenuators
____________________________Features
♦ 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)
♦ Reference Input Range Includes Both Supply Rails
(MAX517/MAX519)
♦ Power-On Reset Clears All Latches
♦ 4µA Power-Down Mode
______________Ordering Information
MAX517/MAX518/MAX519
2-Wire Serial 8-Bit DACs with
Rail-to-Rail Outputs
________________________________________________________________ Maxim Integrated Products 1
_________________Pin Configurations
INPUT
LATCH 0
OUTPUT
LATCH 0
START/STOP
DETECTOR
DAC0
INPUT
LATCH 1
8-BIT
SHIFT
REGISTER
OUT0
REF
REF
OUT1
MAX518
8
1
DECODE
ADDRESS
COMPARATOR
DAC1
OUTPUT
LATCH 1
V
DD
7
SCL
SDA
AD0 AD1
3
4
65
GND
2
________________Functional Diagram
19-0393; Rev 1; 9/02
PART
MAX517ACPA
MAX517BCPA
MAX517ACSA 0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP RANGE PIN-PACKAGE
8 Plastic DIP
8 Plastic DIP
8 SO
TUE
(LSB)
1
1.5
1
MAX517BCSA
MAX517BC/D 0°C to +70°C
0°C to +70°C 8 SO
Dice*
1.5
1.5
Ordering Information continued at end of data sheet.
*Dice are specified at T
A
= +25°C, DC parameters only.
**Contact factory for availability and processing to MIL-STD-883.
( ) ARE FOR MAX517
Pin Configurations continued at end of data sheet.
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.
TOP VIEW
OUT0
GND
SCL
SDA
1
2
MAX517
3
MAX518
4
DIP/SO
8
OUT1 (REF0)
7
V
6
AD0
5
AD1
DD
MAX517/MAX518/MAX519
2-Wire Serial 8-Bit DACs with
Rail-to-Rail Outputs
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD= 5V ±10%, V
REF_
= 4V (MAX517, MAX519), RL= 10kΩ, CL= 100pF, TA= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VDDto GND..............................................................-0.3V to +6V
OUT_ ..........................................................-0.3V to (V
DD
+ 0.3V)
REF_ (MAX517, MAX519)...........................-0.3V to (V
DD
+ 0.3V)
AD_.............................................................-0.3V to (V
DD
+ 0.3V)
SCL, SDA to GND.....................................................-0.3V to +6V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin CERDIP (derate 8.00mW/°C above +70°C)........640mW
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW
16-Pin CERDIP (derate 10.00mW/°C above +70°C) ......800mW
Operating Temperature Ranges
MAX51_C_ _ .......................................................0°C to +70°C
MAX51_E_ _.....................................................-40°C to +85°C
MAX51_MJB ..................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
±1MAX51 _BM
±1MAX51 _E
MAX51 _C
Full-Scale-Error Temperature Coefficient
Full-Scale-Error Supply Rejection
±1
mV
±10 µV/°C
MAX517, MAX519
Code = FF hex
V
DD
= +5V ±10%
Code = FF hex
±20MAX51 _E
mV
MAX51 _C
±1MAX51 _BM
±1MAX51 _E
MAX51 _C
20MAX51 _BM
20MAX51 _E
MAX51 _C
MAX51 _A
PARAMETER SYMBOL MIN TYP MAX UNITS
Resolution 8 Bits
TUE
±1
Differential Nonlinearity (Note 1) DNL ±1 LSB
Zero-Code Error ZCE
18
mV
Zero-Code-Error Supply Rejection
±1
Zero-Code-Error Temperature Coefficient ±10 µV/°C
Full-Scale Error
±18
CONDITIONS
Guaranteed monotonic
Code = 00 hex
Code = 00 hex
Code = 00 hex
Code = FF hex,
MAX518 unloaded
mV
MAX51 _B ±1.5
Total Unadjusted Error (Note 1) LSB
±20
MAX51 _BM
STATIC ACCURACY
MAX517/MAX518/MAX519
2-Wire Serial 8-Bit DACs with
Rail-to-Rail Outputs
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 5V ±10%, V
REF_
= 4V (MAX517, MAX519), RL= 10kΩ, CL= 100pF, TA= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are T
A
= +25°C.)
0.6I
SINK
= 6mA
I
SINK
= 3mA
0.3V
DD
Input High Voltage V
IH
0.7V
DD
V
Input Leakage Current I
IN
±10 µA
Output Low Voltage V
OL
0.4
V
Three-State Leakage Current I
L
±10 µA
Three-State Output Capacitance C
OUT
10
0V ≤ VIN≤ V
DD
VIN= 0V to V
DD
(Note 6)
PARAMETER SYMBOL MIN TYP MAX UNITS
Output Leakage Current ±10 µA
CONDITIONS
OUT_ = 0V to VDD, power-down mode
pF
LSB
1.5
V
IL
Input Hysteresis V
HYST
0.05V
DD
V
Input Capacitance C
IN
10 pF(Note 6)
Input High Voltage V
IH
2.4 V
Input Low Voltage V
IL
0.8 V
Input Leakage Current I
IN
±10 µAVIN= 0V to V
DD
Voltage Output Slew Rate
2.0
Positive and negative V/µs
MAX51 _C
Output Settling Time µs
Digital Feedthrough 5Code = 00 hex, all digital inputs from 0V to V
DD
nV-s
1.4MAX51 _E
1.0MAX51 _M
Input Voltage Range 0V
DD
V
Input Resistance R
IN
16 24 kΩCode = 55 hex (Note 2)
Input Current ±10 µAPower-down mode
Input Capacitance 30 pFCode = FF hex (Note 3)
Channel-to-Channel Isolation
(MAX519)
-60(Note 4)
MAX51 _M, REF_ = V
DD
(MAX517, MAX519), code = FF hex,
0µA to 500µA
2.0
AC Feedthrough -70
dB
(Note 5)
MAX51 _C/E, REF_ = V
DD
(MAX517, MAX519), code = FF hex,
0µA to 500µA
Full-Scale Output Voltage 0V
DD
V
Output Load Regulation
0.25OUT_ = 4V, 0mA to 2.5mA
6To 1/2 LSB, 10kΩ and 100pF load (Note 8)
DAC OUTPUTS
DIGITAL INPUTS SCL, SDA
DIGITAL INPUTS AD0, AD1, AD2, AD3
DIGITAL OUTPUT SDA (Note 7)
DYNAMIC PERFORMANCE
REFERENCE INPUTS (MAX517, MAX519)
dB
Input Low Voltage V
mA
MAX517/MAX518/MAX519
2-Wire Serial 8-Bit DACs with
Rail-to-Rail Outputs
4 _______________________________________________________________________________________
Note 1: For the MAX518 (full-scale = VDD) the last three codes are excluded from the TUE and DNL specifications, due to the limited
output swing when loaded with 10kΩ to GND.
Note 2: Input resistance is code dependent. The lowest input resistance occurs at code = 55 hex.
Note 3: Input capacitance is code dependent. The highest input capacitance occurs at code FF hex.
Note 4: V
REF_
= 4V
P-P
, 10kHz. Channel-to-channel isolation is measured by setting the code of one DAC to FF hex and setting the
code of all other DACs to 00 hex.
Note 5: V
REF_
= 4Vp-p, 10kHz, DAC code = 00 hex.
Note 6: Guaranteed by design.
Note 7: I
2
C compatible mode. R
PULLUP
= 1.7kΩ.
Note 8: Output settling time is measured by taking the code from 00 hex to FF hex, and from FF hex to 00 hex.
Note 9: A master device must provide a hold time of at least 300ns for the SDA signal (referred to V
IL
of the SCL signal) in order to
bridge the undefined region of SCL’s falling edge.
Note 10: Cb = total capacitance of one bus line in pF. t
R
and tFmeasured between 0.3VDDand 0.7VDD.
Note 11: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.
Hold Time, (Repeated) Start Condition t
HD, STA
0.6 µs
Low Period of the SCL Clock t
LOW
1.3 µs
High Period of the SCL Clock t
HIGH
0.6
PARAMETER SYMBOL MIN TYP MAX UNITS
Serial Clock Frequency f
SCL
0400kHz
Bus Free Time Between a STOP and a
START Condition
t
BUF
1.3 µs
CONDITIONS
µs
Setup Time for a Repeated START Condition t
SU, STA
0.6 µs
Data Hold Time t
HD, DAT
0 0.9 µs
Data Setup Time t
SU, DAT
100
(Note 9)
ns
Fall Time of SDA Transmitting t
F
20 + 0.1Cb 250 ns
Setup Time for STOP Condition t
SU, STO
0.6 µs
Capacitive Load for Each Bus Line Cb 400
I
SINK
≤ 6mA (Notes 7, 10)
pF
Rise Time of Both SDA and SCL Signals, Receiving t
R
20 + 0.1Cb 300 ns
Fall Time of Both SDA and SCL Signals, Receiving t
F
20 + 0.1Cb 300
(Note 10)
(Note 10) ns
Pulse Width of Spike Suppressed t
SP
050(Notes 6, 11) ns
TIMING CHARACTERISTICS
(VDD= 5V ±10%, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are TA= +25°C.)
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 5V ±10%, V
REF_
= 4V (MAX517, MAX519), RL= 10kΩ, CL= 100pF, TA= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are T
A
= +25°C.)
PARAMETER SYMBOL MIN TYP MAX UNITSCONDITIONS
Digital-Analog Glitch Impulse 12Code 128 to 127 nV-s
Signal to Noise + Distortion
Ratio (MAX517, MAX519)
SINAD 87
V
REF_
= 4Vp-p at 1kHz, VDD= 5V,
Code = FF hex
dB
Multiplying Bandwidth
(MAX517, MAX519)
1 MHz
Wideband Amplifier Noise 60 µV
RMS
Supply Voltage V
DD
4.5 5.5 V
1.5 3.0
MAX517E/M
MAX517C
2.5 5
1.5 3.5
V
REF_
= 4Vp-p, 3dB bandwidth
Supply Current
Normal mode, output(s)
unloaded, all digital inputs
at 0V or V
DD
2.5 6
MAX518C, MAX519C
MAX518E/M, MAX519E/M
I
DD
Power-down mode 420µA
POWER REQUIREMENTS
MAX517/MAX518/MAX519
2-Wire Serial 8-Bit DACs with
Rail-to-Rail Outputs
_______________________________________________________________________________________ 5
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
OUT0 LOADED WITH 10kΩ II 100pF
REF0 = 4V (MAX517/MAX519)
DAC CODE = 00 HEX to FF HEX
1µs/div
POSITIVE FULL-SCALE STEP RESPONSE
OUT0
1V/div
FULL-SCALE ERROR vs. SOURCE CURRENT
= VDD)
(V
10
VDD = V
DAC CODE = FF HEX
LOAD TO AGND
8
6
4
FULL-SCALE ERROR (LSB)
2
0
0 0.5 1.5 2.5 3.0 3.5 4.0
OUTPUT SOURCE CURRENT (mA)
REF
= 5V
REF
1.0 2.0
MAX518 SUPPLY CURRENT
vs. TEMPERATURE
3.5
3.0
2.5
2.0
1.5
1.0
SUPPLY CURRENT (mA)
0.5
0
-55 -35
DAC CODE = 1B HEX
-15
56545 125105
TEMPERATURE (°C)
VDD = 5.5V
AD0, AD1 = V
DAC CODE = FF HEX
DAC CODE = 00 HEX
25
ZERO-CODE ERROR
vs. SINK CURRENT
10
VDD = V
= 5V
MAX517-01
8
6
4
ZERO-CODE ERROR (LSB)
2
0
REF
DAC CODE = 00 HEX
LOAD to V
DD
0 0.5 2.0
OUTPUT SINK CURRENT (mA)
1.0 1.5
MAX517-02
MAX518 SUPPLY CURRENT
vs. DAC CODE
3.0
MAX517-04
DD
85
2.5
2.0
1.5
1.0
SUPPLY CURRENT (mA)
0.5
0
32 64 96 128 160 192 224 256
0
DAC CODE (DECIMAL)
VDD = 5.5V
BOTH DACS SET
MAX517-05
MAX517/MAX519 SUPPLY CURRENT
vs. TEMPERATURE
3.0
2.5
2.0
MAX519, DAC CODE = FF HEX
1.5
1.0
SUPPLY CURRENT (mA)
0.5
0
-55 -15 5-35 65
VDD = 5.5V
REF_ INPUTS = 0.6V
ALL DIGITAL INPUTS to V
MAX517, DAC CODE = FF HEX
MAX517, MAX519
DAC CODE = 00 HEX
4525 85 105
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
6
5
4
3
2
1
SHUTDOWN SUPPLY CURRENT (µA)
0
-55 -15-35 45 65 125
VDD = 5.5V
ALL DIGITAL INPUTS to V
255 85 105
TEMPERATURE (°C)
DD
125
DD
MAX517-03
MAX517-07
MAX517/MAX519 SUPPLY CURRENT
vs. REFERENCE VOLTAGE
2.5
2.0
1.5
1.0
SUPPLY CURRENT (mA)
0.5
MAX519
MAX517
0
010.5 32.5 54.5
REFERENCE VOLTAGE (V)
MAX517/MAX519 REFERENCE VOLTAGE INPUT
FREQUENCY RESPONSE
VDD = 5V
DAC CODE(S) FF HEX
21.5 43.5
MAX517-08
0
-4
4V
SINE
-8
-12
RELATIVE OUTPUT (dB)
-16
P-P
SINE
2V
P-P
SINE
1V
P-P
SINE
0.5V
P-P
VDD = 5V
= SINE WAVE
V
REF
CENTERED AT 2.5V
1k 100k10k 1M 10M
FREQUENCY (Hz)
MAX517-09
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