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LTC2656CUFD-L12PBF PDF预览

LTC2656CUFD-L12PBF

更新时间： 2024-11-08 05:43:51
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 287K
描述
Octal 16-/12-Bit Rail-to-Rail DACs with 10ppm/°C Max Reference

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中文翻译

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LTC2656CUFD-L12PBF 数据手册

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LTC2656  
Octal 16-/12-Bit Rail-to-Rail  
DACs with 10ppm/°C  
Max Reference  
FEATURES  
DESCRIPTION  
The LTC®2656 is a family of octal 16-/12-bit rail-to-rail  
DACs with a precision integrated reference. The DACs have  
built-in high performance, rail-to-rail, output buffers and  
are guaranteed monotonic.The LTC2656-L has a full-scale  
output of 2.5V with the integrated 10ppm/°C reference and  
operates from a single 2.7V to 5.5V supply. The LTC2656-H  
has a full-scale output of 4.096V with the integrated refer-  
enceandoperatesfroma4.5Vto5.5Vsupply.EachDACcan  
also operate with an external reference, which sets the DAC  
full-scaleoutputtotwotimestheexternalreferencevoltage.  
n
Precision 10ppm/°C Max Reference  
n
Maximum INL Error: 4LSꢀ at 16 ꢀits  
n
Guaranteed Monotonic over Temperature  
n
Selectable Internal or External Reference  
n
2.7V to 5.5V Supply Range (LTC2656-L)  
n
Integrated Reference ꢀuffers  
n
Ultralow Crosstalk ꢀetween DACs(<1nV•s)  
n
Power-On-Reset to Zero-Scale/Mid-scale  
n
Asynchronous LDAC Update Pin  
n
Tiny 20-Lead 4mm × 5mm QFN and 20-Lead  
Thermally Enhanced TSSOP Packages  
™
These DACs communicate via a SPI/MICROWIRE com-  
patible4-wireserialinterfacewhichoperatesatclockrates  
up to 50MHz. The LTC2656 incorporates a power-on reset  
circuit that is controlled by the PORSEL pin. If PORSEL  
is tied to GND the DACs reset to zero-scale. If PORSEL is  
APPLICATIONS  
n
Mobile Communications  
n
Process Control and Industrial Automation  
n
tied to V , the DACs reset to mid-scale.  
Instrumentation  
Automatic Test Equipment  
CC  
n
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Protected by U.S. Patents, including 5396245, 6891433.  
n
Automotive  
BLOCK DIAGRAM  
REFCOMP  
REFIN/OUT  
INTERNAL REFERENCE  
REF  
REF  
GND  
V
CC  
REFLO  
V
DAC A  
REF  
DAC H  
REF  
V
V
V
V
OUTA  
OUTH  
OUTG  
OUTF  
OUTE  
INL vs Code  
4
3
V
OUTꢀ  
DAC G  
REF  
2
DAC ꢀ  
REF  
1
0
–1  
–2  
–3  
–4  
V
OUTC  
DAC C  
REF  
DAC F  
REF  
DAC A  
DAC ꢀ  
DAC C  
DAC D  
DAC E  
DAC F  
DAC G  
DAC H  
128  
16384  
32768  
CODE  
49152  
65535  
V
OUTD  
DAC E  
DAC D  
2656 TA01  
POWER-ON RESET  
PORSEL  
SDO  
CS/LD  
CONTROL LOGIC  
DECODE  
SCK  
SDI  
32-ꢀIT SHIFT REGISTER  
CLR  
LDAC  
2656 ꢀD  
2656f  
1
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