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MAX5322

更新时间: 2024-11-26 04:41:51
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美信 - MAXIM /
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18页 693K
描述
【10V, Dual, 12-Bit, Serial, Voltage-Output DAC

MAX5322 数据手册

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19-3150; Rev 2; 10/05  
±±10, Dual, ±2-Bit, Serial, 0oltage-Output DAC  
General Description  
Features  
The MAX5322 dual, 12-bit, serial-interface, digital-to-ana-  
log converter (DAC) provides bipolar ±5ꢀ to ±1±ꢀ out-  
puts from ±12ꢀ to ±15ꢀ analog poꢁer-supplꢂ voltages, or  
unipolar 5ꢀ to 1±ꢀ outputs from a single 12ꢀ to 15ꢀ ana-  
log poꢁer-supplꢂ voltage.  
Unipolar or Bipolar Output-Voltage Ranges  
Unipolar: 0 to +2 x V (Single or Dual Supply)  
REF  
Bipolar: -2 x V  
to +2 x V  
(Dual Supply)  
REF  
REF  
Guaranteed INL ±± LSB (ꢀax)  
The MAX5322 features excellent linearitꢂ ꢁith both inte-  
gral nonlinearitꢂ (INL) and differential nonlinearitꢂ (DNL)  
guaranteed to ±1 LꢃS (max). The device also features a  
fast 1±µs to ±.5 LꢃS settling time, and a hardꢁare-shut-  
doꢁn feature that reduces current consumption to 2.8µA.  
The output goes to midscale at poꢁer-up in bipolar  
mode (±ꢀ), and to zero scale at poꢁer-up in unipolar  
mode (±ꢀ). A clear input (CLR) asꢂnchronouslꢂ clears  
the DAC register and sets the outputs to ±ꢀ. The outputs  
can be asꢂnchronouslꢂ updated ꢁith the load DAC  
(LDAC) input.  
Guaranteed Monotonic: DNL ±± LSB (ꢀax)  
±0µs Settling Tiꢀe to 0.5 LSB  
Low 2.8µA Shutdown Current  
Fast ±0MHz SPI-/QSPI-/MICROWIRE-Coꢀpatible  
Serial Interface  
Power-On Reset Sets DAC Output to 0V  
Schꢀitt Trigger Inputs for Direct  
Optocoupler Interface  
The device features a fast 1±MHz ꢃPI™-/QꢃPI™-  
/MICROWIRE™-compatible serial interface that operates  
ꢁith 3ꢀ or 5ꢀ logic. Additional features include a serial-  
data output (DOUT) for daisꢂ chaining and read-back  
functions. The MAX5322 requires external reference volt-  
ages of 2ꢀ to 5.25ꢀ and is available in a 28-pin ꢃꢃOP  
package that operates over the extended (-4±°C to  
+85°C) temperature range.  
Serial-Data Output Allows Daisy-Chaining  
of Devices  
28-Pin SSOP (8ꢀꢀ x ±0ꢀꢀ)  
Ordering Information  
Applications  
Motor Control  
Automatic Test  
PART  
TEMP RANGE  
PIN-PACKAGE  
Equipment (ATE)  
Industrial Process  
Controls  
MAX5322EAI  
-4±°C to +85°C  
28 ꢃꢃOP  
Analog I/O Soards  
Industrial Automation  
Data-Acquisition ꢃꢂstems  
Functional Diagram  
2R  
2R  
SW2  
A1  
SW1  
SW4  
REFA  
LDAC  
CLR  
12-BIT  
DAC A  
A2  
OUTA  
SW3  
SW6  
12  
12  
2R  
INPUT  
REGISTERS  
DAC  
REGISTERS  
2R  
12-BIT  
DAC B  
12  
12  
SW5  
REFB  
SGNDA  
OUTB  
A3  
2R  
16-BIT SHIFT REGISTER  
DIN  
SCLK  
CS  
UNI/BIPA  
UNI/BIPB  
SHDN  
A4  
2R  
SERIAL INTERFACE  
AND CONTROL  
2R  
DOUT  
2R  
V
CC  
DIGITAL  
POWER  
MAX5322  
DGND  
SGNDB  
V
V
SS  
ANALOG  
POWER  
DD  
AGND  
SPI and QSPI are trademarks of Motorola, Inc.  
MICROWIRE is a trademark of National Semiconductor Corp.  
________________________________________________________________ Maxim Integrated Products  
±
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.  

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