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LTC1411

更新时间： 2024-11-26 11:42:15
品牌 Logo 应用领域
Linear Systems /
页数 文件大小 规格书
16页 220K
描述
Single Supply 14-Bit 2.5Msps ADC

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中文翻译

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LTC1411 数据手册

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LTC1411  
Single Supply  
14-Bit 2.5Msps ADC  
U
FEATURES  
DESCRIPTIO  
■
Sample Rate: 2.5Msps  
The LTC®1411 is a 2.5Msps sampling 14-bit A/D con-  
verter in a 36-pin SSOP package, which typically dissi-  
pates only 195mW from a single 5V supply. This device  
comes complete with a high bandwidth sample-and-  
hold, a precision reference, programmable input ranges  
andaninternallytrimmedclock.TheADCcanbepowered  
down with either the Nap or Sleep mode for low power  
applications.  
■
80dB S/(N + D) and 90dB THD at 100kHz fIN  
■
Single 5V Operation  
No Pipeline Delay  
Programmable Input Ranges  
Low Power Dissipation: 195mW (Typ)  
True Differential Inputs Reject Common Mode Noise  
Out-of-Range Indicator  
Internal or External Reference  
■
■
■
■
■
■
The LTC1411 converts either differential or single-ended  
inputs and presents data in 2’s complement format.  
Maximum DC specs include ±2LSB INL and 14-bit no  
missing code over temperature. Outstanding dynamic  
performance includes 80dB S/(N + D) and 90dB THD at  
100kHz input frequency.  
■
Sleep (1µA) and Nap (2mA) Shutdown Modes  
36-Pin SSOP Package  
■
U
APPLICATIO S  
■
Telecommunications  
■
The LTC1411 has four programmable input ranges se-  
lected by two digital input pins, PGA0 and PGA1. This  
providesinputspansof±1.8V,±1.27V,±0.9Vand±0.64V.  
An out-of-the-range signal together with the D13 (MSB)  
will indicate whether a signal is over or under the ADC’s  
input range. A simple conversion start input and a data  
ready signal ease connections to FIFOs, DSPs and micro-  
processors.  
High Speed Data Acquisition  
■
Digital Signal Processing  
Multiplexed Data Acquisition Systems  
Spectrum Analysis  
Imaging Systems  
■
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
W
BLOCK DIAGRA  
10  
30  
AVP  
DVP  
OV  
DD  
+
S/(N + D) and Effective Bits  
vs Input Frequency  
A
IN  
29  
1
2
–
A
IN  
OGND 28  
86  
80  
74  
68  
62  
56  
50  
44  
38  
32  
26  
20  
14  
14  
13  
12  
11  
10  
D13  
12  
2.5V  
BANDGAP  
REFERENCE  
REFOUT  
REFIN  
+
–
3
4
14-BIT  
ADC  
14  
•
•
•
5k  
OUTPUT  
DRIVERS  
D0  
25  
5k 2k  
INTERNAL  
CLOCK  
BUSY  
27  
REFCOM1  
REFCOM2  
5
6
OTR  
26  
X1.62/  
X1.15  
CONTROL LOGIC  
10  
100  
1000  
10000  
INPUT FREQUENCY (kHz)  
1411 TA02  
7, 8, 9  
DGND  
AGND  
AVM  
SLP  
NAP  
PGA1  
CONVST  
PGA0  
1411 BD  
11  
36  
35  
34  
33  
32  
31  
1411f  
1
1234567...16

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