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LTC2634CUD-HZ8TRPBF PDF预览

LTC2634CUD-HZ8TRPBF

更新时间: 2024-10-28 05:43:47
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
30页 357K
描述
Quad 12-/10-/8-Bit Rail-to-Rail DACs with 10ppm/°C Reference

LTC2634CUD-HZ8TRPBF 数据手册

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LTC2634  
Quad 12-/10-/8-Bit  
Rail-to-Rail DACs with  
10ppm/°C Reference  
FEATURES  
DESCRIPTION  
The LTC®2634 is a family of quad 12-, 10- and 8-bit volt-  
age output DACs with an integrated, high accuracy, low  
drift 10ppm/°C reference in 16-lead QFN and 10-lead  
MSOP packages. It has rail-to-rail output buffers and is  
guaranteed monotonic. The LTC2634-L has a full-scale  
output of 2.5V, and operates from a single 2.7V to 5.5V  
supply. The LTC2634-H has a full-scale output of 4.096V,  
and operates from a 4.5V to 5.5V supply. Each DAC can  
also operate with an external reference, which sets the  
full-scale output to the external reference voltage.  
n
Integrated Precision Reference  
2.5V Full-Scale 10ppm/°C (LTC2634-L)  
4.096V Full-Scale 10ppm/°C (LTC2634-H)  
n
Maximum INL Error: 2.5 LSꢀ (LTC2634-12)  
n
Low Noise: 0.75mV 0.1Hz to 200KHz  
P-P  
n
Guaranteed Monotonic over –40°C to 125°C  
Temperature Range  
n
n
n
n
n
n
n
Selectable Internal or External Reference  
2.7V to 5.5V Supply Range (LTC2634-L)  
Ultralow Crosstalk ꢀetween DACs (2.4nV•s)  
Low Power: 0.6mA at 3V  
Power-On Reset to Zero-Scale/Mid-Scale  
Double ꢀuffered Data Latches  
TheseDACscommunicateviaanSPI/MICROWIREcompat-  
ible 3-wire serial interface which operates at clock rates  
up to 50MHz. Serial data output (SDO), a hardware clear  
(CLR),andanasynchronousDACupdate(LDAC)capability  
areavailableintheQFNpackage.TheLTC2634incorporates  
a power-on reset circuit. Options are available for reset  
to zero-scale or reset to mid-scale in internal reference  
mode, or reset to mid-scale in external reference mode  
after power-up.  
Tiny 16-Lead 3mm × 3mm QFN and 10-Lead  
MSOP Packages  
APPLICATIONS  
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Mobile Communications  
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Process Control and Industrial Automation  
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Automatic Test Equipment  
Portable Equipment  
Automotive  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
Protected by U.S. Patents including 5396245, 5859606, 6891433, 6937178, 7414561.  
n
n
BLOCK DIAGRAM  
REF  
INTERNAL  
REFERENCE  
GND  
SWITCH  
Integral Nonlinearity  
V
REF  
(LTC2634-LZ12)  
V
(REFLO)  
CC  
2
V
= 3V  
CC  
INTERNAL REF  
V
V
OUTA  
OUTD  
DAC A  
DAC ꢀ  
DAC D  
DAC C  
1
0
V
V
REF  
REF  
V
V
OUTC  
OUTꢀ  
SDI  
CS/LD  
–1  
–2  
CONTROL  
LOGIC  
DECODE  
0
2048  
3072  
4095  
1024  
SCK  
POWER-ON  
RESET  
32-ꢀIT SHIFT REGISTER  
(CLR)  
CODE  
(SDO)  
2634 TA01  
(LDAC)  
2634 ꢀD  
( ) QFN PACKAGE ONLY  
2634fb  
1

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