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LTC2261CUJ-12-TRPBF PDF预览

LTC2261CUJ-12-TRPBF

更新时间: 2024-11-12 05:43:43
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
32页 818K
描述
12-Bit, 125/105/80Msps Ultralow Power 1.8V ADCs

LTC2261CUJ-12-TRPBF 数据手册

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LTC2261-12  
LTC2260-12/LTC2259-12  
12-Bit, 125/105/80Msps  
Ultralow Power 1.8V ADCs  
FEATURES  
DESCRIPTION  
The LTC®2261-12/LTC2260-12/LTC2259-12 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  
performancethatincludes70.8dBSNRand85dBspurious  
n
70.8dB SNR  
n
85dB SFDR  
n
Low Power: 124mW/103mW/87mW  
n
Single 1.8V Supply  
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 = 70MHz and 75MHz  
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  
226112 TA01a  
GND  
0
20  
30  
40  
50  
60  
10  
125MHz  
CLOCK  
FREQUENCY (MHz)  
226112 TA01b  
226112f  
1

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