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參數(shù)資料
| 型號： | MAX545 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | +5V, Serial-Input, Voltage-Output, 14-Bit DACs |
| 中文描述： | +5V、串行輸入、電壓輸出、14位DAC |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 265K |
| 代理商： | MAX545 |
General Description
The MAX544/MAX545 are serial-input, voltage-output,
14-bit digital-to-analog converters (DACs) that operate
from a single +5V supply. They provide 14-bit perfor-
mance (±0.5LSB INL and ±0.9LSB DNL) over tempera-
ture without any adjustments. The DAC output is
unbuffered, resulting in a low supply current of 0.3mA
and a low offset error of 0.6mV.
The DAC output range is 0V to V
REF.
For bipolar opera-
tion, matched scaling resistors are provided in the
MAX545 for use with an external precision op amp
(such as the MAX400), generating a ±V
REF
output
swing. The MAX545 also includes Kelvin-sense con-
nections for the reference and analog ground pins to
reduce layout sensitivity.
A 16-bit serial word is used to load data into the DAC
latch. The 10MHz, 3-wire serial interface is compatible
with SPI/QSPI/MICROWIRE, and it also interfaces
directly with optocouplers for applications requiring isola-
tion. A power-on reset circuit clears the DAC output to 0V
(unipolar mode) when power is initially applied.
The MAX544 is available in 8-pin plastic DIP and SO
packages. The MAX545 is available in 14-pin plastic
DIP and SO packages.
Applications
Digital Offset and Gain Adjustment
Instrumentation
Industrial Process Control
Automated Test Equipment
Data-Acquisition Systems
Features
o
Full 14-Bit Performance Without Adjustments
o
+5V Single-Supply Operation
o
Low Power: 1.5mW
o
1μs Settling Time
o
Unbuffered Voltage Output Directly Drives 60k
Loads
o
SPI/QSPI/MICROWIRE-Compatible Serial Interface
o
Power-On Reset Circuit Clears DAC Output to 0V
(unipolar mode)
o
Schmitt-Trigger Inputs for Direct Optocoupler
Interface
o
Pin-Compatible 16-Bit Upgrades
(MAX541/MAX542)
M
+5V, Serial-Input, Voltage-Output, 14-Bit DACs
________________________________________________________________
Maxim Integrated Products
1
14
13
12
11
10
9
8
1
2
3
4
5
6
7
V
DD
INV
DGND
LDAC
AGNDS
AGNDF
OUT
RFB
TOP VIEW
MAX545
DIN
N.C.
SCLK
CS
REFF
REFS
DIP/SO
DIN
REF
SCLK
CS
1
2
8
7
V
DD
DGND
AGND
OUT
MAX544
3
4
6
5
DIP/SO
Pin Configurations
14-BIT DAC
DATA LATCH
SERIAL INPUT REGISTER
CONTROL
LOGIC
MAX545
REFF
REFS
CS
DIN
SCLK
AGNDS
AGNDF
OUT
INV
RFB
V
DD
DGND
LDAC
R
FB
R
INV
Functional Diagrams
19-1088; Rev 3; 12/99
PART
MAX544
ACPA
MAX544BCPA
MAX544ACSA
MAX544BCSA
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
8 Plastic DIP
8 Plastic DIP
8 SO
8 SO
Ordering Information
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
INL
(LSB)
±1/2
±1
±1/2
±1
Ordering Information continued at end of data sheet.
Functional Diagrams continued at end of data sheet.
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| MAX544ACPA | +5V, Serial-Input, Voltage-Output, 14-Bit DACs |
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