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LTC2257-14_15 PDF预览

LTC2257-14_15

更新时间： 2024-09-17 01:13:47
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
34页 1355K
描述
14-Bit, 65/40/25Msps Ultralow Power 1.8V ADCs

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中文翻译

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LTC2257-14_15 数据手册

 浏览型号LTC2257-14_15的Datasheet PDF文件第2页浏览型号LTC2257-14_15的Datasheet PDF文件第3页浏览型号LTC2257-14_15的Datasheet PDF文件第4页浏览型号LTC2257-14_15的Datasheet PDF文件第5页浏览型号LTC2257-14_15的Datasheet PDF文件第6页浏览型号LTC2257-14_15的Datasheet PDF文件第7页 
LTC2258-14  
LTC2257-14/LTC2256-14  
14-Bit, 65/40/25Msps  
Ultralow Power 1.8V ADCs  
FeaTures  
DescripTion  
The LTC®2258-14/LTC2257-14/LTC2256-14 are sam-  
pling 14-bit A/D converters designed for digitizing high  
frequency, wide dynamic range signals. They are perfect  
for demanding communications applications with AC  
performance that includes 74dB SNR and 88dB spurious  
n
74dB SNR  
n
n
n
n
n
n
n
n
n
n
n
n
88dB SFDR  
Low Power: 81mW/49mW/35mW  
Single 1.8V Supply  
CMOS, DDR CMOS or DDR LVDS Outputs  
Selectable Input Ranges: 1V to 2V  
800MHz Full-Power Bandwidth S/H  
Optional Data Output Randomizer  
Optional Clock Duty Cycle Stabilizer  
Shutdown and Nap Modes  
Serial SPI Port for Configuration  
Pin Compatible 14-Bit and 12-Bit Versions  
40-Pin (6mm × 6mm) QFN Package  
free dynamic range (SFDR). Ultralow jitter of 0.17ps  
allows undersampling of IF frequencies with excellent  
noise performance.  
P-P  
P-P  
RMS  
DCspecsinclude 1LSBINL(typical), 0.3LSBDNL(typi-  
cal)andnomissingcodesovertemperature.Thetransition  
noise is a low 1.13LSB  
.
RMS  
The digital outputs can be either full rate CMOS, double  
data rate CMOS, or double data rate LVDS. A separate  
output power supply allows the CMOS output swing to  
range from 1.2V to 1.8V.  
applicaTions  
n
+
–
Communications  
The ENC and ENC inputs may be driven differentially  
or single ended with a sine wave, PECL, LVDS, TTL or  
CMOS inputs. An optional clock duty cycle stabilizer al-  
lows high performance at full speed for a wide range of  
clock duty cycles.  
n
Cellular Base Stations  
n
Software Defined Radios  
Portable Medical Imaging  
Multi-Channel Data Acquisition  
Nondestructive Testing  
n
n
n
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  
LTC2258-14 2-Tone FFT,  
fIN = 68MHz and 69MHz  
1.8V  
V
1.2V  
0
–10  
–20  
–30  
–40  
–50  
–60  
–70  
TO 1.8V  
DD  
OV  
DD  
D13  
+
14-BIT  
PIPELINED  
ADC CORE  
CMOS  
OR  
LVDS  
•
•
•
CORRECTION  
LOGIC  
ANALOG  
INPUT  
OUTPUT  
DRIVERS  
INPUT  
S/H  
–
D0  
–80  
–90  
OGND  
–100  
–110  
–120  
CLOCK/DUTY  
CYCLE  
CONTROL  
0
20  
10  
FREQUENCY (MHz)  
30  
225814 TA01a  
GND  
65MHz  
CLOCK  
225814 TA01b  
225814fc  
1
For more information www.linear.com/LTC2258-14  
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