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LTC1861_15

更新时间： 2024-01-01 13:37:40
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
16页 200K
描述
Power, 12-Bit, 250ksps 1- and 2-Channel ADCs in MSOP

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LTC1861_15 数据手册

 浏览型号LTC1861_15的Datasheet PDF文件第2页浏览型号LTC1861_15的Datasheet PDF文件第3页浏览型号LTC1861_15的Datasheet PDF文件第4页浏览型号LTC1861_15的Datasheet PDF文件第5页浏览型号LTC1861_15的Datasheet PDF文件第6页浏览型号LTC1861_15的Datasheet PDF文件第7页 
LTC1860/LTC1861  
µPower, 12-Bit, 250ksps  
1- and 2-Channel ADCs in MSOP  
FEATURES  
DESCRIPTION  
The LTC®1860/LTC1861 are 12-bit A/D converters that are  
offeredinMSOPandSO-8packagesandoperateonasingle  
5V supply. At 250ksps, the supply current is only 850μA.  
The supply current drops at lower speeds because the  
LTC1860/LTC1861 automatically power down to a typical  
supply current of 1nA between conversions. These 12-bit  
switchedcapacitorsuccessiveapproximationADCsinclude  
sample-and-holds. The LTC1860 has a differential analog  
input with an adjustable reference pin. The LTC1861 offers  
a software-selectable 2-channel MUX and an adjustable  
reference pin on the MSOP version.  
n
12-Bit 250ksps ADCs in MSOP Package  
n
Single 5V Supply  
n
Low Supply Current: 850μA (Typ)  
Auto Shutdown Reduces Supply Current  
n
to 2μA at 1ksps  
True Differential Inputs  
n
n
1-Channel (LTC1860) or 2-Channel (LTC1861)  
Versions  
SPI/MICROWIRETM Compatible Serial I/O  
n
n
High Speed Upgrade to LTC1286/LTC1298  
n
Pin Compatible with 16-Bit LTC1864/LTC1865  
n
Guaranteed Operation to 125°C (MSOP Package)  
The 3-wire, serial I/O, MSOP or SO-8 package and  
extremely high sample rate-to-power ratio make these  
ADCs ideal choices for compact, low power, high speed  
systems.  
APPLICATIONS  
n
High Speed Data Acquisition  
Portable or Compact Instrumentation  
Low Power Battery-Operated Instrumentation  
Isolated and/or Remote Data Acquisition  
n
These ADCs can be used in ratiometric applications or  
with external references. The high impedance analog in-  
puts and the ability to operate with reduced spans down  
to 1V full scale, allow direct connection to signal sources  
in many applications, eliminating the need for external  
gain stages.  
n
n
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Single 5V Supply, 250ksps, 12-Bit Sampling ADC  
Supply Current vs Sampling Frequency  
1MF  
1000  
5V  
100  
10  
LTC1860  
1
2
3
4
8
7
6
V
V
CC  
REF  
+
IN  
IN  
SCK  
SDO  
ANALOG INPUT  
0V TO 5V  
SERIAL DATA LINK TO  
ASIC, PLD, MPU, DSP  
OR SHIFT REGISTERS  
1
–
5
GND  
CONV  
1860 TA01  
0.1  
0.01  
0.01  
0.1  
1
10  
100  
1000  
SAMPLING FREQUENCY (kHz)  
1860 TA02  
18601fa  
1
1234567...16

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