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PDF MAX5380EUK-T Data sheet ( Hoja de datos )
| Número de pieza | MAX5380EUK-T | |
| Descripción | Low-Cost / Low-Power / 8-Bit DACs with 2-Wire Serial Interface in SOT23 | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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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 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
Typical Operating Circuit
+2.7V TO +5.5V
VDD
µC
PX.0/SDA
PX.1/SCL
GND
VDD
SDA
SCL MAX5382
GND
OUT
Features
o 8-Bit Accuracy in a Miniature 5-Pin SOT23
o Wide +2.7V to +5.5V Supply Range (MAX5382)
o Low 230µA max Supply Current
o 1µA Shutdown Mode
o Buffered Output Drives Resistive Loads
o Low-Glitch Power-On Reset to Zero DAC Output
o Fast I2C-Compatible Serial Interface
o <±5% Full-Scale Error (MAX5382)
o <±1LSB max INL/DNL
PART
MAX5380_EUK-T
MAX5381_EUK-T
MAX5382_EUK-T
Ordering Information
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
Selector Guide
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
REFERENCE
(V)
+2.0
+2.0
+2.0
+2.0
+4.0
+4.0
+4.0
+4.0
0.9 x VDD
0.9 x VDD
0.9 x VDD
0.9 x VDD
TOP
MARK
ADMN
ADMZ
ADFN
ADMP
ADMV
ADNB
ADNH
ADML
ADMX
ADND
ADNJ
ADNT
Pin Configuration
TOP VIEW
OUT 1
GND 2
VDD 3
MAX5380
MAX5381
MAX5382
5 SCL
4 SDA
I2C 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’s website at www.maxim-ic.com.
1 page  
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
Typical Operating Characteristics (continued)
(VDD = +3.0V (MAX5380), VDD = +5.0V (MAX5381/MAX5382); RL = 10kΩ, TA = +25°C, unless otherwise noted.)
DIFFERENTIAL NONLINEARITY vs. CODE
0.04
0.02
0
-0.02
-0.04
-0.06
-0.08
0
50 100 150 200 250 300
CODE
DIFFERENTIAL NONLINEARITY
vs. SUPPLY VOLTAGE
0
-0.02
-0.04
-0.06
-0.08
-0.10
2.5
3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
5.5
DIFFERENTIAL NONLINEARITY
vs. TEMPERATURE
0
-0.02
-0.04
-0.06
-0.08
-0.10
-40 -20
0 20 40 60 80
TEMPERATURE (°C)
100
TOTAL UNADJUSTED ERROR vs. CODE
0.45
0.30
0.15
0
-0.15
-0.30
-0.45
-0.60
0
50 100 150 200 250 300
CODE
OFFSET ERROR vs. SUPPLY VOLTAGE
0
-0.5
OFFSET ERROR vs. TEMPERATURE
0
-0.5
-1.0 -1.0
-1.5 -1.5
-2.0
2.5
3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
5.5
-2.0
-40 -20
0 20 40 60 80
TEMPERATURE (°C)
100
FULL-SCALE ERROR vs. SUPPLY VOLTAGE
MAX5380/1/2-10
3 1.2
MAX5381
2 0.8
MAX5380
1
MAX5382
0.4
00
-1 -0.4
-2
NO LOAD
-3
2.5 3.0 3.5 4.0 4.5
SUPPLY VOLTAGE (V)
5.0
-0.8
-1.2
5.5
FULL-SCALE ERROR vs. TEMPERATURE
MAX5380/1/2-11
3 1.2
2 0.8
MAX5380
1
MAX5381
0.4
00
MAX5382
-1 -0.4
-2 -0.8
-3
-40 -20
0 20 40 60 80
TEMPERATURE (°C)
-1.2
100
SUPPLY CURRENT vs. SUPPLY VOLTAGE
200
180
160
MAX5380
140
MAX5381
120
MAX5382
100
80
60
40
20
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________ 5
5 Page 
Low-Cost, Low-Power, 8-Bit DACs with
2-Wire Serial Interface in SOT23
µC
SDA SCL
VDD
SCL VDD
MAX5380L
2V REFERENCE
SDA OUT
OFFSET ADJUSTMENT
SCL VDD
MAX5381M
4V REFERENCE
SDA OUT
THRESHOLD ADJUSTMENT
SCL VDD
MAX5382N
VDD REFERENCE
SDA OUT
GAIN ADJUSTMENT
Figure 7. Typical I2C Application
Applications Information
Digital Inputs and Interface Logic
The serial 2-wire interface has logic levels defined as
VIL = 0.3 x VDD and VIH = 0.7 x VDD. All inputs include
Schmitt trigger buffers to accept slow-transition inter-
faces. This means that optocouplers can interface
directly to the MAX5380/MAX5381/MAX5382 without
additional external logic. The digital inputs are compati-
ble with CMOS logic levels and must not be driven with
voltages higher than VDD.
Power-Supply Bypassing and Layout
Careful printed circuit board layout is important for best
system performance. To reduce crosstalk and noise
injection, keep analog and digital signals separate.
Ensure that the ground return from GND to the supply
ground is short and low impedance; a ground plane is
recommended. Bypass VDD with a 0.1µF capacitor to
ground as close as possible to the device. If the supply
is excessively noisy, connect a 10Ω resistor in series
with the supply and VDD and add additional capaci-
tance.
Chip Information
TRANSISTOR COUNT: 2910
are supported. RESTART protocol is supported, but an
immediate STOP condition is necessary to update the
DAC. The 8th bit of the address byte, typically used to
indicate a read or write protocol, is used in the MAX5380/
MAX5381/MAX5382 to enter or exit shutdown mode.
When MAX5380/MAX5381/MAX5382 are addressed in
I2C read mode, they enter shutdown mode.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX5380EUK-T.PDF ] | |
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