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LTC2257CUJ-12-PBF PDF预览

LTC2257CUJ-12-PBF

更新时间： 2024-11-06 05:43:43
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
32页 819K
描述
12-Bit, 65/40/2 5Msps Ultralow Power 1.8V ADCs

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LTC2257CUJ-12-PBF 数据手册

 浏览型号LTC2257CUJ-12-PBF的Datasheet PDF文件第2页浏览型号LTC2257CUJ-12-PBF的Datasheet PDF文件第3页浏览型号LTC2257CUJ-12-PBF的Datasheet PDF文件第4页浏览型号LTC2257CUJ-12-PBF的Datasheet PDF文件第5页浏览型号LTC2257CUJ-12-PBF的Datasheet PDF文件第6页浏览型号LTC2257CUJ-12-PBF的Datasheet PDF文件第7页 
Electrical Specifications Subject to Change  
LTC2258-12  
LTC2257-12/LTC2256-12  
12-Bit, 65/40/2 5Msps  
Ultralow Power 1.8V ADCs  
FEATURES  
DESCRIPTION  
The LTC®2258-12/LTC2257-12/LTC2256-12 are sam-  
pling 12-bit A/D converters designed for digitizing high  
frequency, wide dynamic range signals. They are perfect  
for demanding communications applications with AC  
performancethatincludes71.1dBSNRand85dBspurious  
n
71.1dB SNR  
n
88dB SFDR  
n
Low Power: 79mW/47mW/34mW  
Single 1.8V Supply  
n
n
CMOS, DDR CMOS or DDR LVDS Outputs  
n
free dynamic range (SFDR). Ultralow jitter of 0.17ps  
Selectable Input Ranges: 1V to 2V  
RMS  
P-P  
P-P  
n
n
n
n
n
n
n
allows undersampling of IF frequencies with excellent  
800MHz Full-Power Bandwidth S/H  
noise performance.  
Optional Data Output Randomizer  
Optional Clock Duty Cycle Stabilizer  
Shutdown and Nap Modes  
DC specs include 0.3LSB INL (typical), 0.1LSB DNL  
(typical) and no missing codes over temperature. The  
transition noise is a low 0.3LSB  
Serial SPI Port for Configuration  
.
RMS  
Pin Compatible 14-Bit and 12-Bit Versions  
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.  
40-Pin (6mm × 6mm) QFN Package  
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 and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
1.8V  
2-Tone FFT, fIN = 68MHz and 69MHz  
1.2V  
TO 1.8V  
V
DD  
0
OV  
DD  
–10  
–20  
–30  
–40  
–50  
–60  
–70  
D11  
+
–
12-BIT  
PIPELINED  
ADC CORE  
CMOS  
OR  
LVDS  
•
•
•
CORRECTION  
LOGIC  
ANALOG  
INPUT  
OUTPUT  
DRIVERS  
INPUT  
S/H  
D0  
OGND  
–80  
–90  
CLOCK/DUTY  
CYCLE  
CONTROL  
–100  
–110  
–120  
225812 TA01a  
GND  
0
20  
10  
FREQUENCY (MHz)  
30  
65MHz  
CLOCK  
225812 TA01b  
225812p  
1
1234567...32

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