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LTC2364-18 PDF预览

LTC2364-18

更新时间： 2024-09-29 14:58:03
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
24页 2025K
描述
具 97dB SNR 的 18 位、250ksps、伪差分单极性 SAR ADC

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中文翻译

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LTC2364-18 数据手册

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LTC2364-18  
18-Bit, 250ksps, Pseudo-  
Differential Unipolar SAR  
ADC with 97dB SNR  
FEATURES  
DESCRIPTION  
The LTC®2364-18 is a low noise, low power, high speed  
18-bit successive approximation register (SAR) ADC.  
Operating from a 2.5V supply, the LTC2364-18 has a 0V  
n
250ksps Throughput Rate  
n
2ꢀ5ꢁSꢂ INꢁ ꢃ(aꢄx  
n
Guaranteed 18-ꢂit No (issing Codes  
n
ꢁow Power: 3ꢀ4mW at 250ksps, 3ꢀ4µW at 250sps  
to V pseudo-differential unipolar input range with V  
REF  
REF  
n
97dꢂ SNR ꢃTypx at f = 2kHz  
rangingfrom2.5Vto5.1V.TheLTC2364-18consumesonly  
3.4mW and achieves 2.5LSꢀ ꢁIL maximum, no missing  
codes at 18 bits with 97dꢀ SIR.  
IN  
n
–120dꢂ THD ꢃTypx at f = 2kHz  
IN  
n
Guaranteed Operation to 125°C  
n
2.5V Supply  
The LTC2364-18 has a high speed SPꢁ-compatible se-  
rial interface that supports 1.8V, 2.5V, 3.3V and 5V logic  
while also featuring a daisy-chain mode. The fast 250ksps  
throughput with no cycle latency makes the LTC2364-18  
ideally suited for a wide variety of high speed applications.  
Aninternaloscillatorsetstheconversiontime,easingexter-  
nal timing considerations. The LTC2364-18 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 = 250ksps, fIN = 2kHz  
0
2.5V 1.8V TO 5V  
10µF  
SNR = 97.2dB  
–20  
–40  
THD = –121dB  
SINAD = 97.2dB  
SFDR = 125dB  
0.1µF  
V
REF  
–60  
+
–
V
OV  
DD  
DD  
10Ω  
CHAIN  
RDL/SDI  
SDO  
SCK  
BUSY  
CNV  
0V  
+
–
–80  
LT®6202  
IN  
–100  
–120  
–140  
–160  
–180  
10nF  
LTC2364-18  
IN  
SAMPLE CLOCK  
REF  
GND  
236418 TA01a  
2.5V TO 5.1V  
47µF  
(X5R, 0805 SIZE)  
0
25  
50  
75  
100  
125  
FREQUENCY (kHz)  
236418 TA01b  
236418f  
1
1234567...24

中文翻译

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