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LTC2326-18 PDF预览

LTC2326-18

更新时间： 2024-11-08 14:58:19
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
26页 505K
描述
具 95dB SNR 的 18 位、250ksps、±10.24V 真正双极、伪差分输入 ADC

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LTC2326-18 数据手册

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LTC2326-18  
18-Bit, 250ksps, 10ꢀ2ꢁ4  
True Bipolar, Pseudo-Differential  
Input ADC with 95dB SNR  
FeaTures  
DescripTion  
The LTC®2326-18 is a low noise, high speed 18-bit suc-  
cessive approximation register (SAR) ADC with pseudo-  
differential inputs. Operating from a single 5V supply,  
the LTC2326-18 has a 1ꢀ.2ꢁV true bipolar input range,  
n
250ksps Throughput Rate  
n
±5ꢀLS ꢁIꢀ ꢂ(aꢃx  
n
Guaranteed 18-Sit Io (issing Codes  
Pseudo-Differential ꢁnputs  
n
n
True Sipolar ꢁnput Ranges ±±625ꢄV ±1062ꢅꢄV ±1265ꢄ  
making it ideal for high voltage applications which require  
a wide dynamic range. The LTC2326-18 achieves 5LSꢂ  
INLmaximum,nomissingcodesat18bitswith95dꢂSNR.  
n
n
n
n
n
n
n
n
n
n
n
n
95dS LIR ꢂTypx at f = 2kHz  
ꢁI  
–111dS THD ꢂTypx at f = 2kHz  
ꢁI  
Guaranteed Operation to 125°C  
The LTC2326-18 has an onboard single-shot capable  
reference buffer and low drift (2ꢀppm/°C max) 2.ꢀꢁ8V  
temperature compensated reference. The LTC2326-18  
also has a high speed SPI-compatible serial interface that  
supports1.8V,2.5V,3.3Vand5Vlogicwhilealsofeaturing  
a daisy-chain mode. The fast 25ꢀksps throughput with  
no cycle latency makes the LTC2326-18 ideally suited  
for a wide variety of high speed applications. An internal  
oscillator sets the conversion time, easing external timing  
considerations. The LTC2326-18 dissipates only 28mW  
and automatically naps between conversions, leading to  
reduced power dissipation that scales with the sampling  
rate. A sleep mode is also provided to reduce the power  
consumption of the LTC2326-18 to 3ꢀꢀμW for further  
power savings during inactive periods.  
Single 5V Supply  
Low Drift (2ꢀppm/°C Max) 2.ꢀꢁ8V Internal Reference  
Onboard Single-Shot Capable Reference ꢂuffer  
No Pipeline Delay, No Cycle Latency  
1.8V to 5V I/O Voltages  
SPI-Compatible Serial I/O with Daisy-Chain Mode  
Internal Conversion Clock  
Power Dissipation 28mW (Typ)  
16-Lead MSOP Package  
applicaTions  
n
Programmable Logic Controllers  
n
Industrial Process Control  
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High Speed Data Acquisition  
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Portable or Compact Instrumentation  
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 77ꢀ5765, 7961132.  
n
ATE  
Typical applicaTion  
32k Point FFT fL = 250kspsV  
fꢁI = 2kHz  
0
5V  
1.8V TO 5V  
–20  
–40  
10µF  
2.2µF  
0.1µF  
+10.24V  
–60  
+
V
V
OV  
DD  
DDLBYP DD  
CHAIN  
RDL/SDI  
SDO  
SCK  
BUSY  
CNV  
–80  
–10.24V  
+
–
LT®1468  
IN  
–100  
–120  
–140  
–160  
–180  
LTC2326-18  
–
IN  
SAMPLE CLOCK  
REFBUF  
REFIN  
GND  
232618 TA01  
100nF  
47µF  
0
25  
50  
75  
100  
125  
FREQUENCY (kHz)  
232618 TA01b  
232618fb  
1
For more information www.linear.com/LTC2326-18  
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