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LTC2368-18 PDF预览

LTC2368-18

更新时间: 2023-12-20 18:44:35
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
24页 2264K
描述
具 97dB SNR 的 18 位、1Msps、伪差分单极性 SAR ADC

LTC2368-18 数据手册

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LTC2368-18  
18-Bit, 1Msps, Pseudo-  
Differential Unipolar SAR  
ADC with 97dB SNR  
FEATURES  
DESCRIPTION  
The LTC®2368-18 is a low noise, low power, high speed  
18-bit successive approximation register (SAR) ADC.  
Operating from a 2.5V supply, the LTC2368-18 has a 0V  
n
1Msps Throughput Rate  
n
2ꢀ.5Sꢁ IN5 ꢂMaꢃx  
n
Guaranteed 18-ꢁit No Missing Codes  
n
5ow Power: 13ꢀ.mW at 1Msps, 13ꢀ.µW at 1ksps  
to V pseudo-differential unipolar input range with V  
REF  
REF  
n
97dꢁ SNR ꢂTypx at f = 2kHz  
ranging from 2.5V to 5.1V. The LTC2368-18 consumes  
only 13.5mW and achieves 2.5LSꢀ ꢁIL maximum, no  
missing codes at 18 bits with 97dꢀ SIR.  
IN  
n
120dꢁ THD ꢂTypx at f = 2kHz  
IN  
n
Guaranteed Operation to 125°C  
n
2.5V Supply  
The LTC2368-18 has a high speed SPꢁ-compatible serial  
interface that supports 1.8V, 2.5V, 3.3V and 5V logic while  
alsofeaturingadaisy-chainmode.Thefast1Mspsthrough-  
put with no cycle latency makes the LTC2368-18 ideally  
suited for a wide variety of high speed applications. An  
internaloscillatorsetstheconversiontime,easingexternal  
timingconsiderations.TheLTC2368-18automaticallypow-  
ers down between conversions, leading to reduced power  
dissipation that scales with the sampling rate.  
n
Pseudo-Differential Unipolar ꢁnput Range: 0V to V  
REF  
n
n
n
n
n
n
V
ꢁnput Range from 2.5V to 5.1V  
REF  
Io Pipeline Delay, Io Cycle Latency  
1.8V to 5V ꢁ/O Voltages  
SPꢁ-Compatible Serial ꢁ/O with Daisy-Chain Mode  
ꢁnternal Conversion Clock  
16-Lead MSOP and 4mm × 3mm DFI Packages  
APPLICATIONS  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners. Protected by U.S. Patents, including 7705765.  
n
Medical ꢁmaging  
n
High Speed Data Acquisition  
n
Portable or Compact ꢁnstrumentation  
ꢁndustrial Process Control  
Low Power ꢀattery-Operated ꢁnstrumentation  
ATE  
n
n
n
TYPICAL APPLICATION  
32k Point FFT fS = 1Msps, fIN = 2kHz  
0
2.5V 1.8V TO 5V  
10µF  
SNR = 97.2dB  
–20  
–40  
THD = –120dB  
SINAD = 97.1dB  
SFDR = 120dB  
0.1µF  
V
–60  
REF  
+
V
OV  
DD  
DD  
10Ω  
CHAIN  
RDL/SDI  
SDO  
SCK  
BUSY  
CNV  
0V  
–80  
+
LT®6202  
IN  
–100  
–120  
–140  
–160  
–180  
10nF  
LTC2368-18  
IN  
SAMPLE CLOCK  
REF  
GND  
236818 TA01a  
2.5V TO 5.1V  
47µF  
(X5R, 0805 SIZE)  
0
100  
200  
300  
400  
500  
FREQUENCY (kHz)  
236818 TA01b  
236818f  
1

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