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LTC2345-16 PDF预览

LTC2345-16

更新时间： 2024-09-25 14:58:19
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
40页 2013K
描述
具宽输入共模范围的 8 通道、16 位、200ksps、差分 SoftSpan ADC

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中文翻译

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LTC2345-16 数据手册

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LTC2345-16  
Octal, 16-Bit, 200ksps  
Differential SoftSpan ADC with  
Wide Input Common Mode Range  
DescripTion  
FeaTures  
The LTC®2345-16 is a 16-bit, low noise 8-channel si-  
multaneous sampling successive approximation register  
(SAR) ADC with differential, wide common mode range  
inputs. Operating from a 5V low voltage supply and us-  
n
200ksps per Channel Throughput  
n
Eight Simultaneous Sampling Channels  
n
±±12ꢀ5Sꢁ ꢂI5 ꢃ(aꢄimumꢅ  
Guaranteed ±6-ꢁit, Io (issing Codes  
n
n
ing the internal reference and buffer, each channel of this  
SoftSpanTM ADC can be independently configured on a  
conversion-by-conversion basis to accept 4.ꢀ06, ꢀV  
to 4.ꢀ06V, 2.ꢀ48V, or ꢀV to 2.ꢀ48V signals. Individual  
channels may also be disabled to increase throughput on  
the remaining channels.  
Differential, Wide Common (ode Range ꢂnputs  
n
Per-Channel SoftSpan ꢂnput Ranges:  
±ꢆ10ꢇ6ꢈ, 0ꢈ to ꢆ10ꢇ6ꢈ, ±210ꢆꢉꢈ, 0ꢈ to 210ꢆꢉꢈ  
±ꢀꢈ, 0ꢈ to ꢀꢈ, ±21ꢀꢈ, 0ꢈ to 21ꢀꢈ  
ꢇ±dꢁ Single-Conversion SIR ꢃTypicalꢅ  
n
n
−±±3dꢁ THD ꢃTypicalꢅ at f = 2kHz  
ꢂI  
n
n
n
n
n
n
n
n
±02dꢁ C(RR ꢃTypicalꢅ at f = 200Hz  
Rail-to-Rail ꢂnput Overdrive Tolerance  
Guaranteed Operation to 125°C  
Integrated Reference and Buffer (4.ꢀ06V)  
SPI CMOS (1.8V to 5V) and LVDS Serial I/O  
Internal Conversion Clock, No Cycle Latency  
81mW Power Dissipation (Typical)  
The wide input common mode range and 1ꢀ2dB CMRR of  
the LTC2345-16 analog inputs allow the ADC to directly  
digitizeavarietyofsignals,simplifyingsignalchaindesign.  
This input signal flexibility, combined with 1.25LSB INL,  
no missing codes at 16 bits, and 01dB SNR, makes the  
LTC2345-16 an ideal choice for many applications requir-  
ing wide dynamic range.  
ꢂI  
48-Lead (7mm x 7mm) QFN Package  
TheLTC2345-16supportspin-selectableSPICMOS(1.8V  
to 5V) and LVDS serial interfaces. Between one and eight  
lanes of data output may be employed in CMOS mode,  
allowing the user to optimize bus width and throughput.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property  
of their respective owners. Protected by U.S. Patents, including 77ꢀ5765, 7061132, 8310673.  
Other Patents pending.  
applicaTions  
n
Programmable Logic Controllers  
Industrial Process Control  
Medical Imaging  
High Speed Data Acquisition  
n
n
n
Typical applicaTion  
5V  
0.1µF  
1.8V TO 5V  
0.1µF  
ꢂntegral Ionlinearity vs  
2.2µF  
V
Output Code and Channel  
CMOS OR LVDS  
1.00  
I/O INTERFACE  
±±4.096V RANG  
LVDS/CMOS  
FULLY  
DIFFERENTIAL  
5V  
–
+
FULLY DIFFERENTIAL DRIVE (IN = –IN )  
V
OV  
DD  
0.75  
0.50  
0.25  
0
DD  
DDLBYP  
+
–
ARBITRARY  
IN0  
IN0  
ALL CHANNELS  
S/H  
S/H  
S/H  
S/H  
S/H  
S/H  
S/H  
S/H  
PD  
5V  
0V  
LTC2345-16  
SDO0  
0V  
5V  
0V  
16-BIT  
MUX  
SDO7  
SCKO  
SCKI  
SDI  
CS  
BUSY  
CNV  
SAR ADC  
UNIPOLAR  
–0.25  
–0.50  
–0.75  
–1.00  
BIPOLAR  
5V  
0V  
+
–
SAMPLE  
CLOCK  
IN7  
IN7  
+
–
REFBUF REFIN  
47µF  
GND  
0.1µF  
DIFFERENTIAL INPUTS IN /IN WITH  
WIDE INPUT COMMON MODE RANGE  
–32768  
–16384  
0
16384  
32768  
234516 TA01a  
OUTPUT CODE  
234516 TA01b  
EIGHT SIMULTANEOUS  
SAMPLING CHANNELS  
234516f  
1
For more information www.linear.com/LTC2345-16  
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中文翻译

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