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LTC2301

更新时间： 2023-12-20 18:44:04
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
26页 885K
描述
具有I2C兼容型接口的单通道、12位ADC

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LTC2301 数据手册

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LTC2301/LTC2305  
1-/2-Channel, 12-Bit ADCs  
2
with I C Compatible Interface  
FEATURES  
DESCRIPTION  
The LTC®2301/LTC2305 are low noise, low power,  
1-/2-channel, 12-bit successive approximation ADCs  
n
12-Bit Resolution  
n
Low Power: 1.5mW at 1ksps, 35μW Sleep Mode  
2
n
14ksps Throughput Rate  
withanI Ccompatibleserialinterface.TheseADCsinclude  
n
Internal Reference  
an internal reference and a fully differential sample-and-  
hold circuit to reduce common mode noise. The LTC2301/  
LTC2305 operate from an internal clock to achieve a fast  
1.3μs conversion time.  
n
Low Noise: SNR = 73.5dB  
n
Guaranteed No Missing Codes  
n
Single 5V Supply  
2
n
2-wire I C Compatible Serial Interface with 9  
The LTC2301/LTC2305 operate from a single 5V supply  
and draw just 300μA at a throughput rate of 1ksps. The  
ADC enters nap mode when not converting, reducing the  
power dissipation.  
Addresses Plus One Global for Synchronization  
n
Fast Conversion Time: 1.3ꢀs  
n
1-Channel (LTC2301) and 2-Channel (LTC2305)  
Versions  
n
The LTC2301/LTC2305 are available in small 12-pin  
4mm × 3mm DFN and 12-pin MSOP packages. The in-  
ternal 2.5V reference further reduces PCB board space  
requirements.  
Unipolar or Bipolar Input Ranges (Software  
Selectable)  
Internal Conversion Clock  
n
n
Guaranteed Operation from –40°C to 125°C  
(MSOP Package)  
The low power consumption and small size make the  
LTC2301/LTC2305 ideal for battery operated and portable  
n
12-Pin 4mm × 3mm DFN and 12-Pin MSOP  
Packages  
2
applications,whilethe2-wireI Ccompatibleserialinterface  
makes these ADCs a good match for space-constrained  
systems.  
APPLICATIONS  
n
12-Bit I2C ADC Family  
Industrial Process Control  
n
Motor Control  
Input Channels  
Part Number  
1
2
8
n
Accelerometer Measurements  
LTC2301  
LTC2305  
LTC2309  
n
Battery Operated Instruments  
Isolated and/or Remote Data Acquisition  
n
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.  
n
Power Supply Monitoring  
BLOCK DIAGRAM  
5V  
Integral Nonlinearity vs Output Code (LTC2305)  
10μF  
0.1μF  
1.00  
0.75  
V
AD1  
LTC2301  
LTC2305  
DD  
0.50  
0.25  
AD0  
+
+
–
CH0(IN )  
ANALOG  
INPUT  
MUX  
12-BIT  
SAR ADC  
SCL  
SDA  
2
ANALOG INPUT  
0V TO 4.096V UNIPOLAR  
2.048V BIPOLAR  
I C  
0.00  
+
PORT  
CH1(IN )  
–0.25  
–0.50  
–0.75  
–1.00  
V
REF  
INTERNAL  
2.5V REF  
2.2μF  
PIN NAMES IN PARENTHESES  
REFER TO LTC2301  
REFCOMP  
10μF  
0
1024  
2048  
3072  
4096  
GND  
0.1μF  
OUTPUT CODE  
23015 TA01a  
23015 TA01b  
23015fb  
1
1234567...26

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