19-1641; Rev 1; 1/01
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鈩?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 1碌A and the output is pulled down to GND with a
10k鈩?resistor.
Features
o
8-Bit Accuracy in a Miniature 5-Pin SOT23
o
Wide +2.7V to +5.5V Supply Range (MAX5382)
o
Low 230碌A max Supply Current
o
1碌A Shutdown Mode
o
Buffered Output Drives Resistive Loads
o
Low-Glitch Power-On Reset to Zero DAC Output
o
Fast I
2
C-Compatible Serial Interface
o
<卤5% Full-Scale Error (MAX5382)
o
<卤1LSB max INL/DNL
MAX5380/MAX5381/MAX5382
Ordering Information
PART
MAX5380_EUK-T
MAX5381_EUK-T
MAX5382_EUK-T
TEMP. RANGE
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳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
ADFN
ADMP
ADMV
ADNB
ADNH
ADML
ADMX
ADND
ADNJ
ADNT
Typical Operating Circuit
+2.7V TO +5.5V
V
DD
碌C
V
DD
PX.0/SDA
PX.1/SCL
GND
SDA
SCL
Pin Configuration
TOP VIEW
MAX5382
GND
OUT
OUT
1
5
SCL
GND
2
V
DD
3
MAX5380
MAX5381
MAX5382
4
SDA
I
2
C is a trademark of Philips Corp.
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鈥檚 website at www.maxim-ic.com.
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