19-1641; Rev 2; 11/04
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
General Description
The MAX5380/MAX5381/MAX5382 are low-cost, 8-bit
digital-to-analog converters (DACs) in miniature 5-pin
SOT23 packages, with a simple 2-wire serial interface
that allows communication with multiple devices. The
MAX5380 has an internal +2V reference and operates
from a +2.7V to +3.6V supply. The MAX5381 has an
internal +4V reference and operates from a +4.5V to
+5.5V supply. The MAX5382 operates over the full
+2.7V to +5.5V supply range and has an internal refer-
ence equal to 0.9 x V
DD
.
The fast-mode I
2
C*-compatible serial interface allows
communication at data rates up to 400kbps, minimizing
board space and reducing interconnect complexity
in many applications. Each device is available with
one of four factory-preset addresses (see
Selector
Guide).
These DACs also include an output buffer, a low-power
shutdown mode, and a power-on reset that ensures the
DAC outputs are at zero when power is initially applied.
In shutdown mode, supply current is reduced to less
than 1µA and the output is pulled down to GND with a
10kΩ resistor.
Features
♦
8-Bit Accuracy in a Miniature 5-Pin SOT23
♦
Wide +2.7V to +5.5V Supply Range (MAX5382)
♦
Low 230µA max Supply Current
♦
1µA Shutdown Mode
♦
Buffered Output Drives Resistive Loads
♦
Low-Glitch Power-On Reset to Zero DAC Output
♦
Fast I
2
C-Compatible Serial Interface
♦
<±5% Full-Scale Error (MAX5382)
♦
<±1LSB max INL/DNL
MAX5380/MAX5381/MAX5382
Ordering Information
PART
MAX5380_EUK-T
MAX5381_EUK-T
MAX5382_EUK-T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
5 SOT23
5 SOT23
5 SOT23
Applications
Automatic Tuning (VCO)
Power-Amplifier Bias Control
Programmable Threshold Levels
Automatic Gain Control
Automatic Offset Adjustment
PART
MAX5380LEUK
MAX5380MEUK
MAX5380NEUK
MAX5380PEUK
MAX5381LEUK
MAX5381MEUK
MAX5381NEUK
MAX5381PEUK
MAX5382LEUK
MAX5382MEUK
MAX5382NEUK
MAX5382PEUK
ADDRESS
0x60
0x62
0x64
0x66
0x60
0x62
0x64
0x66
0x60
0x62
0x64
0x66
Selector Guide
REFERENCE
(V)
+2.0
+2.0
+2.0
+2.0
+4.0
+4.0
+4.0
+4.0
0.9 x V
DD
0.9 x V
DD
0.9 x V
DD
0.9 x V
DD
TOP
MARK
ADMN
ADMZ
ADNF
ADMP
ADMV
ADNB
ADNH
ADMR
ADMX
ADND
ADNJ
ADMT
Typical Operating Circuit
+2.7V TO +5.5V
V
DD
µC
V
DD
PX.0/SDA
PX.1/SCL
GND
SDA
SCL
MAX5382
GND
OUT
Pin Configuration
TOP VIEW
OUT
1
5
SCL
Purchase of I
2
C components from Maxim Integrated Products,
Inc., or one of its sublicensed Associate Companies, conveys a
license under the Philips I
2
C Patent Rights to use these compo-
nents in an I
2
C system, provided that the system conforms to the
I
2
C Standard Specification defined by Philips.
GND
2
V
DD
3
MAX5380
MAX5381
MAX5382
4
SDA
SOT23-5
________________________________________________________________
Maxim Integrated Products
1
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.
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
MAX5380/MAX5381/MAX5382
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND ..............................................................-0.3V to +6V
OUT, SCL, SDA to GND ...........................................-0.3V to +6V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW
Operating Temperature Ranges
MAX538_ _EUK-T .............................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Maximum Junction Temperature .....................................+150°C
Lead Temperature (soldering, 10s) .................................+300°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.
ELECTRICAL CHARACTERISTICS
(V
DD
= +2.7V to +3.6V (MAX5380), V
DD
= +4.5V to +5.5V (MAX5381), V
DD
= +2.7V to +5.5V (MAX5382); R
L
= 10kΩ; C
L
= 50pF,
T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are T
A
= +25°C.)
PARAMETER
STATIC ACCURACY
Resolution
Integral Linearity Error
Differential Linearity Error
Offset Error
Offset Error Supply Rejection
Offset Error Temperature
Coefficient
Full-Scale Error
Full-Scale Error Supply Rejection
Full-Scale Error Temperature
Coefficient
DAC OUTPUT
MAX5380
Internal Reference (Note 5)
REF
MAX5381
MAX5382
Output Load Regulation
Output Resistance
DYNAMIC PERFORMANCE
Voltage Output Slew Rate
Output Settling Time
Digital Feedthrough
Digital-Analog Glitch Impulse
Wake-Up Time
Positive and negative
To 1/2 LSB, 50kΩ and 50pF load (Note 6)
Code = 0, all digital inputs from 0 to V
DD
Code 127 to 128
From software shutdown
0.4
20
2
40
50
V/µs
µs
nVs
nVs
µs
Code = 255, 0 to 100µA
Code = 0, 0 to 100µA
V
OUT
= 0 to V
DD
, power-down mode
1.8
3.6
0.85 x
V
DD
2
4
0.9 x
V
DD
0.5
0.5
10
2.2
4.4
0.95 x
V
DD
LSB
kΩ
V
INL
DNL
(Note 1)
Guaranteed monotonic
(Note 2)
MAX5382 (Notes 2, 3)
(Note 2)
Code = 255
MAX5380/MAX5381
MAX5382
MAX5380/MAX5381
MAX5382
MAX5380/MAX5381
MAX5382
±40
±10
60
3
1
10
5
50
±1
8
±1
±1
±25
Bits
LSB
LSB
mV
dB
ppm/°C
% of
ideal FS
dB
ppm/°C
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Code = 255, MAX5380/MAX5281 (Note 4)
Code = 255
2
_______________________________________________________________________________________
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +3.6V (MAX5380), V
DD
= +4.5V to +5.5V (MAX5381), V
DD
= +2.7V to +5.5V (MAX5382); R
L
= 10kΩ; C
L
= 50pF,
T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are T
A
= +25°C.)
PARAMETER
POWER REQUIREMENTS
MAX5380
Supply Voltage
V
DD
MAX5381
MAX5382
Supply Current
DIGITAL INPUTS
(SCL, SDA)
Input Low Voltage
Input High Voltage
Input Hysteresis
Input Capacitance
Input Leakage Current
Pulse Width of Spike Suppressed
DIGITAL OUTPUT
(SDA, open drain)
Output Low Voltage
V
OL
I
SINK
= 3mA
I
SINK
= 6mA
V
IH(MIN)
to V
IL(MAX)
,
bus capacitance =
10pF to 400pF
I
SINK
= 3mA
I
SINK
= 6mA
0.4
0.6
250
ns
250
V
V
IL
V
IH
V
HYS
C
IN
I
IN
t
SP
0
(Note 7)
0.7 x V
DD
0.05 x V
DD
10
±10
50
0.3 x V
DD
V
V
V
pF
µA
ns
I
DD
No load, all digital inputs at 0 or V
DD
, code = 255
Shutdown mode
2.7
4.5
2.7
150
3.6
5.5
5.5
230
1
µA
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5380/MAX5381/MAX5382
Output Fall Time
t
OF
TIMING CHARACTERISTICS
(Figure 3; V
DD
= +2.7V to +3.6V (MAX5380), V
DD
= +4.5V to +5.5V (MAX5381), V
DD
= +2.7V to +5.5V (MAX5382); R
L
= 10kΩ;
C
L
= 50pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are T
A
= +25°C.) (Note 7)
PARAMETER
SCL Clock Frequency
Bus Free Time Between a
STOP and a START Condition
Hold Time Repeated for a
START Condition
Low Period of the SCL Clock
High Period of the SCL Clock
Setup Time for a Repeated
START Condition
Data Hold Time
Data Setup Time
SYMBOL
f
SCL
t
BUF
t
HD:STA
t
LOW
t
HIGH
t
SU:STA
t
HD:DAT
t
SU:DAT
CONDITIONS
MIN
0
1.3
0.6
1.3
0.6
0.6
0
100
0.9
TYP
MAX
400
UNITS
kHz
µs
µs
µs
µs
µs
µs
ns
_______________________________________________________________________________________
3
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
MAX5380/MAX5381/MAX5382
TIMING CHARACTERISTICS (continued)
(Figure 3; V
DD
= +2.7V to +3.6V (MAX5380), V
DD
= +4.5V to +5.5V (MAX5381), V
DD
= +2.7V to +5.5V (MAX5382); R
L
= 10kΩ;
C
L
= 50pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are T
A
= +25°C.) (Note 7)
PARAMETER
Rise Time of Both SDA and
SCL Signals
Fall Time of Both SDA and
SCL Signals
Setup Time for STOP Condition
Capacitive Load for Each
Bus Line
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
SYMBOL
t
r
t
f
t
SU:STO
C
b
0.6
400
CONDITIONS
MIN
TYP
MAX
300
300
UNITS
ns
ns
µs
pF
Guaranteed from code 5 to code 255.
The offset value extrapolated from the range over which the INL is guaranteed.
MAX5382 tested at V
DD
= +5V ±10%.
MAX5380 tested at V
DD
= +3V ±10%, MAX5381 tested at V
DD
= 5V ±10%.
Actual output voltages at full scale are 255/256 x V
REF
.
Output settling time is measured by taking the code from code 5 to 255, and from code 255 to 5.
Guaranteed by design.
Typical Operating Characteristics
(V
DD
= +3.0V (MAX5380), V
DD
= +5.0V (MAX5381/MAX5382); R
L
= 10kΩ, T
A
= +25°C, unless otherwise noted.)
INTEGRAL NONLINEARITY vs. CODE
MAX5380/1/2-01
INTEGRAL NONLINEARITY
vs. SUPPLY VOLTAGE
MAX5380/1/2-02
INTEGRAL NONLINEARITY
vs. TEMPERATURE
MAX5380/1/2-03
0.075
0.050
0.025
0
0
-0.05
INL (LSB)
INL (LSB)
-0.05
INL (LSB)
0
-0.025
-0.050
-0.075
-0.100
-0.10
-0.10
-0.15
-0.15
-0.20
0
50
100
150
CODE
200
250
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
-0.20
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
4
_______________________________________________________________________________________
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
MAX5380/MAX5381/MAX5382
Typical Operating Characteristics (continued)
(V
DD
= +3.0V (MAX5380), V
DD
= +5.0V (MAX5381/MAX5382); R
L
= 10kΩ, T
A
= +25°C, unless otherwise noted.)
DIFFERENTIAL NONLINEARITY vs. CODE
MAX5380/1/2-04
DIFFERENTIAL NONLINEARITY
vs. SUPPLY VOLTAGE
MAX5380/1/2-05
DIFFERENTIAL NONLINEARITY
vs. TEMPERATURE
MAX5380/1/2-06
0
-0.02
0
-0.02
0.04
0.02
DNL (LSB)
0
-0.02
-0.04
-0.06
-0.08
0
50
100
150
CODE
200
250
DNL (LSB)
-0.06
DNL (LSB)
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-0.04
-0.04
-0.06
-0.08
-0.08
-0.10
300
SUPPLY VOLTAGE (V)
-0.10
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
TOTAL UNADJUSTED ERROR vs. CODE
MAX5380/1/2-07
OFFSET ERROR vs. SUPPLY VOLTAGE
MAX5380/1/2-08
OFFSET ERROR vs. TEMPERATURE
MAX5380/1/2-09
0.45
0.30
0.15
TUE (LSB)
0
-0.15
-0.30
-0.45
-0.60
0
50
100
150
CODE
200
250
0
0
-0.5
V
OS
(mV)
-0.5
OFFSET ERROR (mV)
-1.0
-1.0
-1.5
-1.5
-2.0
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
-2.0
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
FULL-SCALE ERROR vs. SUPPLY VOLTAGE
3
2
FULL-SCALE ERROR (LSB)
1
0
-1
-2
NO LOAD
-3
2.5
3.0
3.5
4.0
4.5
5.0
SUPPLY VOLTAGE (V)
-1.2
5.5
-3
MAX5380/1/2-10
FULL-SCALE ERROR vs. TEMPERATURE
3
2
FULL-SCALE ERROR (LSB)
FULL-SCALE ERROR (%)
1
0
MAX5382
-1
-2
-0.4
-0.8
-1.2
100
MAX5380
MAX5381
MAX5380/1/2-11
SUPPLY CURRENT vs. SUPPLY VOLTAGE
180
MAX5380/1/2-12
MAX5381
MAX5380
MAX5382
1.2
0.8
0.4
0
-0.4
-0.8
1.2
0.8
FULL-SCALE ERROR (%)
SUPPLY CURRENT (µA)
0.4
0
200
MAX5381
MAX5380
MAX5382
160
140
120
100
80
60
40
20
0
2.5
-40
-20
0
20
40
60
80
3.0
3.5
4.0
4.5
5.0
5.5
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
5
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