Rainbow Electronics MAX5382 - 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 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
10k
Ω 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
I 2 C 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
SDA V DD
1 5 SCL OUT
MAX5380
MAX5381
MAX5382
SOT23-5
TOP VIEW
2
3 4
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.