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LTC2379CDE-18#PBF

更新时间： 2024-02-16 09:36:53
品牌 Logo 应用领域
凌特 - Linear 光电二极管转换器
页数 文件大小 规格书
26页 550K
描述
LTC2379-18 - 18-Bit, 1.6Msps, Low Power SAR ADC with 101dB SNR; Package: DFN; Pins: 16; Temperature Range: 0°C to 70°C

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LTC2379CDE-18#PBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVSON,
针数：16Reach Compliance Code：compliant
风险等级：5.14最大模拟输入电压：5.1 V
最小模拟输入电压：-2.5 V最长转换时间：0.412 µs
转换器类型：ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码：R-PDSO-N16
JESD-609代码：e3长度：4 mm
最大线性误差 (EL)：0.0008%湿度敏感等级：1
模拟输入通道数量：1位数：18
功能数量：1端子数量：16
最高工作温度：70 °C最低工作温度：
输出位码：2'S COMPLEMENT BINARY输出格式：SERIAL
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
采样速率：1.6 MHz座面最大高度：0.8 mm
标称供电电压：2.5 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.45 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3 mm
Base Number Matches：1

LTC2379CDE-18#PBF 数据手册

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LTC2379-18  
18-Bit, 1.6Msps, Low Power  
SAR ADC with 101.2dB SNR  
FEATURES  
DESCRIPTION  
The LTC®2379-18 is a low noise, low power, high speed  
18-bit successive approximation register (SAR) ADC.  
Operating from a 2.5V supply, the LTC2379-18 has a  
n
1.6Msps Throughput Rate  
n
2ꢀSꢁ INꢀ ꢂMaꢃx  
n
Guaranteed 18-ꢁit No Missing Codes  
n
ꢀow Power: 18mW at 1.6Msps, 18µW at 1.6ksps  
V
REF  
fully differential input range with V ranging from  
REF  
n
101.2dꢁ SNR ꢂtypx at f = 2kHz  
2.5V to 5.1V. The LTC2379-18 consumes only 18mW and  
achieves 2LSBINLmaximum,nomissingcodesat18bits  
with 101.2dB SNR.  
IN  
IN  
n
–120dꢁ THD ꢂtypx at f = 2kHz  
n
Digital Gain Compression ꢂDGCx  
n
Guaranteed Operation to 125°C  
The LTC2379-18 has a high speed SPI-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 LTC2379-18  
ideally suited for a wide variety of high speed applications.  
Aninternaloscillatorsetstheconversiontime,easingexter-  
nal timing considerations. The LTC2379-18 automatically  
powers down between conversions, leading to reduced  
power dissipation that scales with the sampling rate.  
n
2.5V Supply  
n
Fully Differential Input Range V  
REF  
n
n
n
n
n
n
V
Input Range from 2.5V to 5.1V  
REF  
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  
16-Lead MSOP and 4mm × 3mm DFN Packages  
The LTC2379-18 features a unique digital gain compres-  
sion(DGC)function,whicheliminatesthedriveramplifier’s  
negative supply while preserving the full resolution of the  
ADC. When enabled, the ADC performs a digital scaling  
APPLICATIONS  
n
Medical Imaging  
n
High Speed Data Acquisition  
n
Portable or Compact Instrumentation  
Industrial Process Control  
Low Power Battery-Operated Instrumentation  
ATE  
function that maps zero-scale code from 0V to 0.1 • V  
REF  
n
and full-scale code from V  
to 0.9 • V . For a typical  
REF  
REF  
n
reference voltage of 5V, the full-scale input range is now  
0.5V to 4.5V, which provides adequate headroom for  
powering the driving amplifier from a single 5.5V supply.  
n
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.  
TYPICAL APPLICATION  
32k Point FFT fS = 1.6Msps, fIN = 2kHz  
0
2.5V 1.8V TO 5V  
10µF  
SNR = 101.2dB  
–20  
–40  
THD = –120dB  
SINAD = 101.1dB  
SFDR = 121dB  
0.1µF  
–60  
V
OV  
DD  
CHAIN  
RDL/SDI  
SDO  
SCK  
BUSY  
CNV  
DD  
3300pF  
3300pF  
3300pF  
V
V
REF  
20Ω  
20Ω  
+
–
–80  
IN  
+
–
0V  
–100  
–120  
–140  
–160  
–180  
LTC2379-18  
REF  
IN  
SAMPLE CLOCK  
0V  
V
REF/DGC  
REF  
GND  
REF  
237918 TA01  
2.5V TO 5.1V  
47µF  
(X5R, 0805 SIZE)  
0
100 200 300 400 500 600 700 800  
FREQUENCY (kHz)  
237918 TA02  
237918fb  
1
For more information www.linear.com/LTC2379-18  
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