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MAX544BEPA 参数 Datasheet PDF下载

MAX544BEPA图片预览
型号: MAX544BEPA
PDF下载: 下载PDF文件 查看货源
内容描述: + 5V ,串行输入,电压输出, 14位DAC [+5V, Serial-Input, Voltage-Output, 14-Bit DACs]
分类和应用: 转换器数模转换器光电二极管
文件页数/大小: 12 页 / 265 K
品牌: MAXIM [ MAXIM INTEGRATED PRODUCTS ]
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19-1088; Rev 3; 12/99
+5V, Serial-Input, Voltage-Output, 14-Bit DACs
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.
o
+5V Single-Supply Operation
o
Low Power: 1.5mW
o
1µs Settling Time
o
Unbuffered Voltage Output Directly Drives 60kΩ
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)
Features
o
Full 14-Bit Performance Without Adjustments
MAX544/MAX545
Ordering Information
PART
MAX544ACPA
MAX544BCPA
MAX544ACSA
MAX544BCSA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
8 Plastic DIP
8 Plastic DIP
8 SO
8 SO
INL
(LSB)
±1/2
±1
±1/2
±1
Applications
Digital Offset and Gain Adjustment
Instrumentation
Industrial Process Control
Automated Test Equipment
Data-Acquisition Systems
Ordering Information continued at end of data sheet.
Functional Diagrams
V
DD
RFB
R
FB
INV
Pin Configurations
TOP VIEW
REFF
REFS
MAX545
R
INV
RFB 1
OUT 2
14 V
DD
13 INV
14-BIT DAC
OUT
AGNDF
OUT
1
AGND
2
REF
3
CS
4
8
V
DD
AGNDF 3
AGNDS 4
REFS 5
MAX545
12 DGND
11 LDAC
10 DIN
9 N.C.
8
SCLK
MAX544
7
DGND
6
DIN
5
SCLK
REFF 6
CS 7
CS
LDAC
SCLK
DIN
DATA LATCH
CONTROL
LOGIC
SERIAL INPUT REGISTER
DGND
AGNDS
DIP/SO
DIP/SO
Functional Diagrams continued at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
1
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.