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LTC1864LACMS8#PBF PDF预览

LTC1864LACMS8#PBF

更新时间: 2024-10-01 13:09:43
品牌 Logo 应用领域
凌特 - Linear 转换器模数转换器光电二极管
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LTC1864LACMS8#PBF 数据手册

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LTC1864L/LTC1865L  
µPower, 3V, 16-Bit, 150ksps  
1- and 2-Channel ADCs in MSOP  
U
FEATURES  
DESCRIPTIO  
The LTC®1864L/LTC1865L are 16-bit A/D converters that  
are offered in MSOP and SO-8 packages and operate on a  
single 3V supply. At 150ksps, the supply current is only  
450µA. The supply current drops at lower speeds because  
the LTC1864L/LTC1865L automatically power down  
between conversions. These 16-bit switched capacitor  
successiveapproximationADCsincludesample-and-holds.  
The LTC1864L has a differential analog input with an  
external reference pin. The LTC1865L offers a software-  
selectable2-channelMUXandanexternalreferencepinon  
the MSOP version.  
16-Bit 150ksps ADCs in MSOP Package  
Single 3V Supply  
Low Supply Current: 450µA (Typ)  
Auto Shutdown Reduces Supply Current  
to 10µA at 1ksps  
True Differential Inputs  
1-Channel (LTC1864L) or 2-Channel (LTC1865L)  
Versions  
SPI/MICROWIRETM Compatible Serial I/O  
16-Bit Upgrade to 12-Bit LTC1285/LTC1288  
Pin Compatible with 12-Bit LTC1860L/LTC1861L  
No Minimum Data Transfer Rate  
The 3-wire, serial I/O, small 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.  
U
APPLICATIO S  
High Speed Data Acquisition  
Portable or Compact Instrumentation  
These ADCs can be used in ratiometric applications or  
with external references. The high impedance analog  
inputs 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.  
Low Power Battery-Operated Instrumentation  
Isolated and/or Remote Data Acquisition  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
MICROWIRE is a trademark of National Semiconductor Corporation.  
U
TYPICAL APPLICATIO  
Supply Current vs Sampling Frequency  
Single 3V Supply, 150ksps, 16-Bit Sampling ADC  
1000  
CONV LOW = 2µs  
T
= 25°C  
A
1µF  
V
= 2.7V  
CC  
100  
3V  
LTC1864L  
10  
1
1
2
3
4
8
7
6
V
V
CC  
REF  
+
IN  
IN  
SCK  
SDO  
ANALOG INPUT  
0V TO 3V  
SERIAL DATA LINK TO  
ASIC, PLD, MPU, DSP  
OR SHIFT REGISTERS  
5
GND  
CONV  
1864 TA01  
0.1  
0.01  
0.1  
1
10  
100  
1000  
SAMPLING FREQUENCY (kHz)  
1864L/65L TA02  
sn18645L 18645Lfs  
1

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