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LTC2377-18 PDF预览

LTC2377-18

更新时间: 2024-11-11 11:44:31
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 879K
描述
18-Bit, 1.6Msps, Pseudo-Differential Unipolar SAR

LTC2377-18 数据手册

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LTC2369-18  
18-Bit, 1.6Msps, Pseudo-  
Differential Unipolar SAR  
ADC with 96.5dB SNR  
FEATURES  
DESCRIPTION  
The LTC®2369-18 is a low noise, low power, high speed  
18-bit successive approximation register (SAR) ADC.  
Operating from a 2.5V supply, the LTC2369-18 has a 0V  
n
1.6Msps Throughput Rate  
n
2.ꢀ5Sꢁ IN5 ꢂMaꢃx  
n
Guaranteed 18-ꢁit No Missing Codes  
n
5ow Power: 18mW at 1.6Msps, 18μW at 1.6ksps  
to V pseudo-differential unipolar input range with V  
REF  
REF  
n
96.ꢀdꢁ SNR ꢂTypx at f = 2kHz  
rangingfrom2.5Vto5.1V.TheLTC2369-18consumesonly  
18mW and achieves 2.5LSꢀ ꢁIL maximum, no missing  
codes at 18 bits with 96.5dꢀ SIR.  
IN  
IN  
n
120dꢁ THD ꢂTypx at f = 2kHz  
n
Guaranteed Operation to 125°C  
n
2.5V Supply  
The LTC2369-18 has a high speed SPꢁ-compatible serial  
interface that supports 1.8V, 2.5V, 3.3V and 5V logic while  
also featuring a daisy-chain mode. The fast 1.6Msps  
throughput with no cycle latency makes the LTC2369-18  
ideally suited for a wide variety of high speed applications.  
Aninternaloscillatorsetstheconversiontime,easingexter-  
nal timing considerations. The LTC2369-18 automatically  
powers 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 = 1.6Msps, fIN = 2kHz  
0
2.5V 1.8V TO 5V  
10μF  
SIR = 96.5dꢀ  
–20  
–40  
THD = –127dꢀ  
SꢁIAD = 96.5dꢀ  
SFDR = 134dꢀ  
0.1μF  
V
REF  
–60  
+
V
OV  
DD  
DD  
5.1Ω  
CHAꢁI  
RDL/SDꢁ  
SDO  
SCK  
ꢀUSY  
CIV  
0V  
+
–80  
LT®6202  
ꢁI  
–100  
–120  
–140  
–160  
–180  
10nF  
LTC2369-18  
ꢁI  
SAMPLE CLOCK  
REF  
GID  
236918 TA01a  
2.5V TO 5.1V  
47μF  
(X5R, 0805 SꢁZE)  
0
100 200 300 400 500 600 700 800  
FREQUEICY (kHz)  
236918 TA01b  
236918fa  
1

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