Rainbow Electronics MAX5382 User Manual
MAX5380/MAX5381/MAX5382
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 reference equal to 0.9 x VDD.
The fast-mode I2C™-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.
Applications
Automatic Tuning (VCO)
Power-Amplifier Bias Control
Programmable Threshold Levels
Automatic Gain Control
Automatic Offset Adjustment
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
PX.1/SCL
+2.7V TO +5.5V
PX.0/SDA
GND
µC
V
DD
SCL
SDA
OUT
GND
V
DD
MAX5382
Typical Operating Circuit
19-1641; Rev 1; 1/01
Ordering Information
I2C is a trademark of Philips Corp.
Selector Guide
PART
MAX5380_EUK-T
MAX5381_EUK-T
MAX5382_EUK-T
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE PIN-PACKAGE
5 SOT23
5 SOT23
5 SOT23
PART
MAX5380LEUK
MAX5380MEUK
MAX5380NEUK 0x64
0x62
0x60
ADDRESS
REFERENCE
(V)
+2.0
+2.0
+2.0
MAX5380PEUK 0x66 +2.0
MAX5381LEUK
0x60 +4.0
MAX5381MEUK 0x62 +4.0
MAX5381NEUK 0x64 +4.0
MAX5381PEUK 0x66 +4.0
MAX5382MEUK 0x62 0.9 x V
DD
MAX5382NEUK 0x64 0.9 x V
DD
MAX5382PEUK 0x66 0.9 x V
DD
MAX5382LEUK
0x60 0.9 x V
DD
TOP
MARK
ADMN
ADMZ
ADFN
ADMP
ADMV
ADNB
ADML
ADND
ADNJ
ADNT
ADMX
ADNH
GND
SDAV
DD
15SCLOUT
MAX5380
MAX5381
MAX5382
SOT23-5
TOP VIEW
2
34
Pin Configuration
________________________________________________________________ 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.
MAX5380/MAX5381/MAX5382
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD= +2.7V to +3.6V (MAX5380), VDD= +4.5V to +5.5V (MAX5381), VDD= +2.7V to +5.5V (MAX5382); RL= 10kΩ; CL= 50pF,
T
A
= 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, 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
1.8 2 2.2MAX5380
MAX5382
MAX5380/MAX5381
MAX5382
MAX5380/MAX5381
MAX5382
MAX5380/MAX5381
Offset Error Temperature
Coefficient
1
ppm/°C(Note 2)
Digital-Analog Glitch Impulse
40
nVs
Wake-Up Time 50 µs
Code 127 to 128
From software shutdown
PARAMETER SYMBOL MIN TYP MAX UNITS
3
Offset Error Supply Rejection 60 dB
Offset Error ±1 ±25 mV
Differential Linearity Error DNL ±1 LSB
10
Full-Scale Error
5
% of
ideal FS
Full-Scale Error Supply Rejection 50 dB
±40
Resolution 8 Bits
Integral Linearity Error INL ±1 LSB
Full-Scale Error Temperature
Coefficient
±10
0.85 x 0.9 x 0.95 x
V
DD
V
DD
V
DD
Output Resistance 10 kΩ
Voltage Output Slew Rate 0.4 V/µs
Output Settling Time 20 µs
Digital Feedthrough
2
nVs
CONDITIONS
Code = 255
MAX5382 (Notes 2, 3)
(Note 2)
Guaranteed monotonic
Code = 255
Code = 255, MAX5380/MAX5281 (Note 4)
MAX5382
V
OUT
= 0 to VDD, power-down mode
(Note 1)
Positive and negative
To 1/2 LSB, 50kΩ and 50pF load (Note 6)
Code = 0, all digital inputs from 0 to V
DD
ppm/°C
0.5Code = 255, 0 to 100µA
Output Load Regulation
0.5
LSB
Code = 0, 0 to 100µA
VREFInternal Reference (Note 5)
MAX5381 3.6 4 4.4
STATIC ACCURACY
DAC OUTPUT
DYNAMIC PERFORMANCE
MAX5380/MAX5381/MAX5382
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VDD= +2.7V to +3.6V (MAX5380), VDD= +4.5V to +5.5V (MAX5381), VDD= +2.7V to +5.5V (MAX5382); RL= 10kΩ; CL= 50pF,
T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are TA= +25°C.)
250I
SINK
= 6mA
I
SINK
= 3mA
PARAMETER SYMBOL MIN TYP MAX UNITS
Supply Current I
DD
1
150 230
Supply Voltage V
DD
2.7 5.5
V
Input Low Voltage V
IL
0.3 x V
DD
V
Input High Voltage V
IH
0.7 x V
DD
V
Input Hysteresis V
HYS
0.05 x V
DD
V
Input Capacitance C
IN
10 pF
2.7 3.6
4.5 5.5
Input Leakage Current I
IN
±10 µA
Pulse Width of Spike Suppressed t
SP
050ns
0.4
Output Low Voltage V
OL
0.6
V
Output Fall Time t
OF
250
ns
CONDITIONS
Shutdown mode
No load, all digital inputs at 0 or VDD, code = 255
MAX5382
I
SINK
= 3mA
(Note 7)
I
SINK
= 6mA
V
IH(MIN)
to V
IL(MAX)
,
bus capacitance =
10pF to 400pF
MAX5380
MAX5381
µA
POWER REQUIREMENTS
DIGITAL INPUTS (SCL, SDA)
DIGITAL OUTPUT (SDA, open drain)
Data Hold Time t
HD:DAT
00.9µs
Data Setup Time t
SU:DAT
100 ns
CONDITIONS
µs0.6t
SU:STA
Setup Time for a Repeated
START Condition
µs0.6t
HIGH
High Period of the SCL Clock
µs1.3t
LOW
Low Period of the SCL Clock
kHz
0 400
f
SCL
SCL Clock Frequency
µs0.6t
HD:STA
Hold Time Repeated for a
START Condition
µs1.3t
BUF
Bus Free Time Between a
STOP and a START Condition
UNITSMIN TYP MAXSYMBOLPARAMETER
TIMING CHARACTERISTICS
(Figure 3; VDD= +2.7V to +3.6V (MAX5380), VDD= +4.5V to +5.5V (MAX5381), VDD= +2.7V to +5.5V (MAX5382); RL= 10kΩ;
C
L
= 50pF, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are TA= +25°C.) (Note 7)
MAX5380/MAX5381/MAX5382
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
4 _______________________________________________________________________________________
TIMING CHARACTERISTICS (continued)
(Figure 3; VDD= +2.7V to +3.6V (MAX5380), VDD= +4.5V to +5.5V (MAX5381), VDD= +2.7V to +5.5V (MAX5382); RL= 10kΩ;
C
L
= 50pF, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are TA= +25°C.) (Note 7)
Note 1: Guaranteed from code 5 to code 255.
Note 2: The offset value extrapolated from the range over which the INL is guaranteed.
Note 3: MAX5382 tested at V
DD
= +5V ±10%.
Note 4: MAX5380 tested at V
DD
= +3V ±10%, MAX5381 tested at VDD= 5V ±10%.
Note 5: Actual output voltages at full scale are 255/256 x V
REF
.
Note 6: Output settling time is measured by taking the code from code 5 to 255, and from code 255 to 5.
Note 7: Guaranteed by design.
Rise Time of Both SDA and
SCL Signals
t
r
300 ns
Fall Time of Both SDA and
SCL Signals
t
f
CONDITIONS
300 ns
Setup Time for STOP Condition t
SU:STO
0.6 µs
Capacitive Load for Each
Bus Line
C
b
400 pF
UNITSMIN TYP MAXSYMBOLPARAMETER
Typical Operating Characteristics
(VDD= +3.0V (MAX5380), VDD= +5.0V (MAX5381/MAX5382); RL= 10kΩ, TA= +25°C, unless otherwise noted.)
-0.050
-0.075
-0.100
-0.025
0
0.025
0.050
0.075
0 100 20050 150 250 300
INTEGRAL NONLINEARITY vs. CODE
MAX5380/1/2-01
CODE
INL (LSB)
0
-0.10
-0.15
-0.05
-0.20
2.5 4.03.0 3.5 4.5 5.0 5.5
INTEGRAL NONLINEARITY
vs. SUPPLY VOLTAGE
MAX5380/1/2-02
SUPPLY VOLTAGE (V)
INL (LSB)
0
-0.10
-0.15
-0.05
-0.20
-40 20-20 0 40 60 80 100
INTEGRAL NONLINEARITY
vs. TEMPERATURE
MAX5380/1/2-03
TEMPERATURE (°C)
INL (LSB)
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