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LTC2641-16

更新时间： 2024-09-21 11:41:55
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 408K
描述
16-Bit, 2Msps, Low Power SAR ADC with 96dB SNR

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LTC2641-16 数据手册

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Electrical Specifications Subject to Change  
LTC2380-16  
16-Bit, 2Msps, Low Power  
SAR ADC with 96dB SNR  
FEATURES  
DESCRIPTION  
The LTC®2380-16 is a low noise, low power, high speed  
16-bit successive approximation register (SAR) ADC.  
Operating from a 2.5V supply, the LTC2380-16 has a  
n
2Msps Throughput Rate  
n
±±0.6Sꢀ IN6 ꢁMaꢂx  
n
Guaranteed 1.-ꢀit No Missing Codes  
n
6ow Power: 19mW at 2Msps, 19μW at 2ksps  
V
REF  
fully differential input range with V ranging from  
REF  
n
9.dꢀ SNR ꢁtypx at f = 2kHz  
2.5V to 5.1V. The LTC2380-16 consumes only 19mW and  
achieves 0.6LSꢀ ꢁIL maximum, no missing codes at  
16-bits with 96dꢀ SIR.  
IN  
n
–117dꢀ THD ꢁtypx at f = 2kHz  
IN  
n
Digital Gain Compression ꢁDGCx  
n
Guaranteed Operation to 125°C  
The LTC2380-16 has a high speed SPꢁ-compatible serial  
interface that supports 1.8V, 2.5V, 3.3V and 5V logic while  
alsofeaturingadaisychainmode.Thefast2Mspsthrough-  
put with no cycle latency makes the LTC2380-16 ideally  
suited for a wide variety of high speed applications. An  
internaloscillatorsetstheconversiontime,easingexternal  
timingconsiderations.TheLTC2380-16automaticallypow-  
ers down between conversions, leading to reduced power  
dissipation that scales with the sampling rate.  
n
2.5V Supply  
n
Fully Differential ꢁnput Range 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-pin MSOP and 4mm × 3mm DFI Packages  
The LTC2380-16 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 ꢁmaging  
n
High Speed Data Acquisition  
n
Portable or Compact ꢁnstrumentation  
ꢁndustrial Process Control  
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
Low Power ꢀattery-Operated ꢁnstrumentation  
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
ATE  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
32k Point FFT fS = 2Msps, fIN = 2kHz  
0
2.5V 1.8V TO 5V  
10μF  
SIR = 96.4dꢀ  
–20  
–40  
THD = –119dꢀ  
SꢁIAD = 96.3dꢀ  
SFDR = 122dꢀ  
0.1μF  
–60  
V
OV  
DD  
CHAꢁI  
RDL/SDꢁ  
SDO  
SCK  
ꢀUSY  
CIV  
DD  
3300pF  
3300pF  
3300pF  
V
V
REF  
20Ω  
20Ω  
+
–
–80  
ꢁI  
0V  
–100  
–120  
–140  
–160  
–180  
LTC2380-16  
REF  
ꢁI  
SAMPLE CLOCK  
0V  
V
REF/DGC  
REF  
GID  
REF  
238016 TA01  
2.5V TO 5.1V  
47μF  
(X5R, 0805 SꢁZE)  
0
100 200 300 400 500 600 700 800 900 1000  
FREQUEICY (kHz)  
238016 TA02  
238016p  
1
1234567...24

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