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MAX521ACPP+ Datasheet

  • MAX521ACPP+

  • IC, 8BIT DAC, R2R, DIP20, 521; Resolution (Bits):8bit; Sampl...

  • 274.80KB

  • 20页

  • Maxim   Maxim

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19-0378; Rev 3; 9/96
Quad/Octal, 2-Wire Serial 8-Bit DACs
with Rail-to-Rail Outputs
_______________General Description
The MAX520/MAX521 are quad/octal, 8-bit voltage-output
digital-to-analog converters (DACs) with simple 2-wire ser-
ial interfaces that allow communication between multiple
devices. They operate from a single +5V supply and their
reference input range includes both supply rails.
The MAX521 includes rail-to-rail output buffer amplifiers for
reduced system size and component count when driving
loads. The MAX520鈥檚 unbuffered voltage outputs reduce
the device鈥檚 total supply current to 4碌A and provide
increased accuracy at low output currents.
The MAX520/MAX521 feature a serial interface and internal
software protocol, allowing communication at data rates up
to 400kbps. The interface, combined with the double-
buffered input configuration, allows the DAC registers to be
updated individually or simultaneously. In addition, the
devices can be put into a low-power shutdown mode that
reduces supply current to 4碌A. Power-on reset ensures the
DAC outputs are at 0V when power is initially applied.
The MAX520 is available in 16-pin DIP and wide SO pack-
ages, as well as a space-saving 20-pin SSOP. The
MAX521 comes in 20-pin DIP and 24-pin SO packages, as
well as a space-saving 24-pin SSOP.
____________________________Features
o
o
o
o
Single +5V Supply
Simple 2-Wire Serial Interface
I
2
C Compatible
Outputs Swing Rail to Rail:
Unbuffered Outputs (MAX520)
Buffered Outputs (MAX521)
1%-Accurate Trimmed Output Resistance (MAX520A)
Ultra-Low 4碌A Supply Current (MAX520)
Individual DACs Have Separate Reference Inputs
Power-On Reset Clears All Latches
4碌A Power-Down Mode
MAX520/MAX521
o
o
o
o
o
______________Ordering Information
PART
鈥?/div>
TEMP. RANGE
0掳C to +70掳C
0掳C to +70掳C
0掳C to +70掳C
0掳C to +70掳C
PIN-PACKAGE
16 Plastic DIP
16 Plastic DIP
16 Wide SO
16 Wide SO
TUE
(LSB)
1
1
1
1
MAX520ACPE
MAX520BCPE
MAX520ACWE
MAX520BCWE
________________________Applications
Minimum Component Analog Systems
Digital Offset/Gain Adjustment
Industrial Process Control
Automatic Test Equipment
Programmable Attenuators
Ordering Information continued at end of data sheet.
鈥?/div>
MAX520 鈥淎鈥?grade parts include a 1%-accurate, factory-trimmed
output resistance.
_______________Functional Diagrams
SDA
SCL
REF1
INPUT
LATCH 0
1
OUTPUT
LATCH 0
REF0
DAC0
OUT0
_________________Pin Configurations
TOP VIEW
MAX520
8
8-BIT
SHIFT REGISTER
OUT1
OUT0
1
2
16 OUT2
15 OUT3
14 REF2
ADDRESS
COMPARATOR
START/STOP
DETECTOR
INPUT
LATCH 1
1
OUTPUT
LATCH 1
DAC1
OUT1
REF1 3
REF0 4
AGND 5
DGND 6
SCL 7
SDA 8
MAX520
13 REF3
12 V
DD
11 AD2
10 AD1
9
AD0
AD0
AD1
AD2
DECODE
4
INPUT
LATCH 2
1
INPUT
LATCH 3
1
OUTPUT
LATCH 2
DAC2
OUT2
OUTPUT
LATCH 3
DAC3
OUT3
DIP/SO
REF2
REF3
Pin Configurations continued at end of data sheet.
Functional Diagrams continued at end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

MAX521ACPP+ 产品属性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 18

  • 集成电路 (IC)

  • 数据采集 - 数模转换器

  • -

  • 6µs

  • 8

  • I²C，串行

  • 8

  • 单电源

  • 889mW

  • 0°C ~ 70°C

  • 通孔

  • 20-DIP（0.300"，7.62mm）

  • 20-PDIP

  • 管件

  • 8 电压，单极

  • *

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