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LTC1821BIGW#TRPBF PDF预览

LTC1821BIGW#TRPBF

更新时间： 2024-11-18 13:09:47
品牌 Logo 应用领域
凌特 - Linear /
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16页 221K
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LTC1821BIGW#TRPBF 数据手册

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LTC1821  
16-Bit, Ultra Precise,  
Fast Settling V DAC  
OUT  
U
FEATURES  
DESCRIPTIO  
The LTC®1821 is a parallel input 16-bit multiplying voltage  
output DAC that operates from analog supply voltages of  
±5V up to ±15V. INL and DNL are accurate to 1LSB over the  
industrial temperature range in both unipolar 0V to 10V and  
bipolar±10Vmodes.Precise16-bitbipolar±10Voutputsare  
achieved with on-chip 4-quadrant multiplication resistors.  
The LTC1821 is available in a 36-lead SSOP package and is  
specified over the industrial temperature range.  
■
2µs Settling to 0.0015% for 10V Step  
■
1LSB Max DNL and INL Over Industrial  
Temperature Range  
■
On-Chip 4-Quadrant Resistors Allow Precise 0V to  
10V, 0V to –10V or ±10V Outputs  
■
Low Glitch Impulse: 2nV•s  
■
Low Noise: 13nV/√Hz  
■
36-Lead SSOP Package  
■
Power-On Reset  
Thedeviceincludesaninternaldeglitchercircuitthatreduces  
the glitch impulse to less than 2nV•s (typ). The LTC1821  
settles to 1LBS in 2µs with a full-scale 10V step. The  
combinationoffast,precisesettlingandultralowglitchmake  
the LTC1821 ideal for precision industrial control applica-  
tions.  
■
Asynchronous Clear Pin  
LTC1821: Reset to Zero Scale  
LTC1821-1: Reset to Midscale  
U
APPLICATIO S  
The asynchronous CLR pin resets the LTC1821 to zero scale  
and resets the LTC1821-1 to midscale.  
■
Process Control and Industrial Automation  
■
Precision Instrumentation  
■
Direct Digital Waveform Generation  
■
Software-Controlled Gain Adjustment  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
Automatic Test Equipment  
U
TYPICAL APPLICATIO  
16-Bit, 4-Quadrant Multiplying DAC with a  
Minimum of External Components  
V
REF  
–V  
LTC1821/LTC1821-1  
Integral Nonlinearity  
REF  
5V  
3
2
+
0.1µF  
6
1.0  
LT®1468  
–
0.8  
0.6  
15pF  
15pF  
0.4  
12 14  
10  
R1  
9
R
8
2
V
CC  
11  
R
0.2  
REF  
R
I
OUT  
COM  
R2  
OFS  
FB  
+
V
15  
0
15V  
R
R
OFS  
FB  
R1  
–0.2  
–0.4  
–0.6  
–0.8  
–1.0  
0.1µF  
–
+
V
REF  
16  
13  
V
V
=
OUT  
LTC1821-1  
DATA  
16-BIT DAC  
OUT  
INPUTS  
–V  
REF  
3 TO 6,  
25 TO 36  
–15V  
0.1µF  
–
V
20  
0
32768  
49152  
16384  
65535  
DIGITAL INPUT CODE  
WR LD CLR  
24 23  
DNC* DNC* DNC* NC  
18 19 21 22  
DGND  
1
AGNDF AGNDS  
17 16  
1821 TA02  
7
WR  
LD  
1821 TA01  
CLR  
*DO NOT CONNECT  
1
1234567...16

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