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LTC2172IUKG-12TRPBF PDF预览

LTC2172IUKG-12TRPBF

更新时间: 2024-09-16 11:42:03
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
34页 1586K
描述
12-Bit, 65Msps/40Msps/25Msps Low Power Quad ADCs

LTC2172IUKG-12TRPBF 数据手册

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LTC2172-12/  
LTC2171-12/LTC2170-12  
12-Bit, 65Msps/40Msps/  
25Msps Low Power Quad ADCs  
FEATURES  
DESCRIPTION  
TheLTC®2172-12/LTC2171-12/LTC2170-12are4-channel,  
simultaneoussampling12-bitA/Dconvertersdesignedfor  
digitizinghighfrequency,widedynamicrangesignals.They  
are perfect for demanding communications applications  
with AC performance that includes 71dB SNR and 90dB  
spurious free dynamic range (SFDR). An ultralow jitter of  
n
4-Channel Simultaneous Sampling ADC  
n
71dB SNR  
n
90dB SFDR  
Low Power: ꢀ06mW/198mW/160mW Total,  
77mW/50mW/40mW per Channel  
Single 1.8V Supply  
Serial LVDS Outputs: One or Two Bits per Channel  
Selectable Input Ranges: 1V to 2V  
n
n
n
0.15ps  
allows undersampling of IF frequencies with  
RMS  
n
excellent noise performance.  
P-P  
P-P  
n
n
n
n
n
800MHz Full Power Bandwidth Sample-and-Hold  
Shutdown and Nap Modes  
DC specifications include 0.ꢀLSB INL (typ), 0.1LSB  
DNL (typ) and no missing codes over temperature. The  
transition noise is a low 0.ꢀLSB  
Serial SPI Port for Configuration  
.
RMS  
Pin-Compatible 14-Bit and 12-Bit Versions  
52-Pin (7mm × 8mm) QFN Package  
The digital outputs are serial LVDS to minimize the num-  
ber of data lines. Each channel outputs two bits at a time  
(2-lanemode)oronebitatatime(1-lanemode).TheLVDS  
drivers have optional internal termination and adjustable  
output levels to ensure clean signal integrity.  
APPLICATIONS  
n
Communications  
n
Cellular Base Stations  
+
The ENC and ENC inputs may be driven differentially  
or single-ended with a sine wave, PECL, LVDS, TTL or  
CMOS inputs. An internal clock duty cycle stabilizer al-  
lows high performance at full speed for a wide range of  
clock duty cycles.  
n
Software Defined Radios  
n
Portable Medical Imaging  
n
Multichannel Data Acquisition  
n
Nondestructive Testing  
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  
1.8V  
V
1.8V  
OV  
DD  
DD  
LTC2172-12, 65Msps,  
2-Tone FFT, fIN = 70MHz and 75MHz  
CHANNEL 1  
ANALOG  
INPUT  
12-BIT  
ADC CORE  
OUT1A  
OUT1B  
S/H  
S/H  
S/H  
S/H  
0
–10  
–20  
–30  
CHANNEL 2  
ANALOG  
INPUT  
OUT2A  
OUT2B  
12-BIT  
ADC CORE  
DATA  
SERIALIZER  
–40  
SERIALIZED  
CHANNEL ꢀ  
ANALOG  
INPUT  
OUTꢀA  
OUTꢀB  
12-BIT  
ADC CORE  
–50  
LVDS  
OUTPUTS  
–60  
–70  
CHANNEL 4  
ANALOG  
INPUT  
OUT4A  
OUT4B  
12-BIT  
ADC CORE  
–80  
–90  
–100  
–110  
–120  
DATA  
CLOCK  
OUT  
ENCODE  
INPUT  
PLL  
0
20  
10  
FREQUENCY (MHz)  
30  
FRAME  
217212 TA01b  
GND  
OGND  
217212 TA01  
21721012fa  
1

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