參數(shù)資料
型號： LTC1821BIGW
廠商： LINEAR TECHNOLOGY CORP
元件分類： DAC
英文描述： 16-Bit, Ultra Precise, Fast Settling VOUT DAC
中文描述： PARALLEL, WORD INPUT LOADING, 2 us SETTLING TIME, 16-BIT DAC, PDSO36
封裝： 0.300 INCH, PLASTIC, SSOP-36
文件頁數(shù)： 1/16頁
文件大小： 220K
代理商： LTC1821BIGW
1
LTC1821
APPLICATIU
DESCRIPTIOU
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
±
10V modes. Precise 16-bit bipolar
±
10V outputs are
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.
The device includes an internal deglitcher circuit that reduces
the glitch impulse to less than 2nVs (typ). The LTC1821
settles to 1LBS in 2
μ
s with a full-scale 10V step. The
combination of fast, precise settling and ultra low glitch make
the LTC1821 ideal for precision industrial control applica-
tions.
The asynchronous CLR pin resets the LTC1821 to zero scale
and resets the LTC1821-1 to midscale.
FEATURES
TYPICAL APPLICATIO
U
16-Bit, Ultra Precise,
Fast Settling V
OUT
DAC
I
Process Control and Industrial Automation
I
Precision Instrumentation
I
Direct Digital Waveform Generation
I
Software-Controlled Gain Adjustment
I
Automatic Test Equipment
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTC1821/LTC1821-1
Integral Nonlinearity
16-Bit, 4-Quadrant Multiplying DAC with a
Minimum of External Components
DIGITAL INPUT CODE
0
I
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
16384
32768
1821 TA02
49152
65535
V
REF
= 10V
V
OUT
=
±
10V BIPOLAR
V
CC
LTC1821-1
R
FB
I
OUT
R
FB
R
OFS
R
OFS
5V
LD
LD
10
R1
9
R
COM
3
2
24 23
7
2
6
15pF
17
16
20
13
V
OUT
15
V
–
V
+
8
REF
11
12
14
0.1
μ
F
1
22
15pF
V
OUT
=
1821 TA01
DGND
NC
AGNDS
AGNDF
–
+
LT
1468
WR
3 TO 6,
25 TO 36
WR
CLR
CLR
16-BIT DAC
R1
R2
16
DATA
INPUTS
0.1
μ
F
15V
–15V
0.1
μ
F
–
+
21
DNC*
19
DNC*
18
*DO NOT CONNECT
DNC*
V
REF
–V
REF
V
REF
–V
REF
I
2
μ
s Settling to 0.0015% for 10V Step
I
1LSB Max DNL and INL Over Industrial
Temperature Range
I
On-Chip 4-Quadrant Resistors Allow Precise 0V to
10V, 0V to –10V or
±
10V Outputs
I
Low Glitch Impulse: 2nVs
I
Low Noise: 13nV/
√
Hz
I
36-Lead SSOP Package
I
Power-On Reset
I
Asynchronous Clear Pin
LTC1821: Reset to Zero Scale
LTC1821-1: Reset to Midscale
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