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LTM2893 PDF预览

LTM2893

更新时间: 2024-01-14 22:42:24
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
32页 1054K
描述
100MHz Isolated ADC Serial Interface

LTM2893 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active包装说明:BGA,
针数:36Reach Compliance Code:compliant
风险等级:5.58转换器类型:ADC, SUCCESSIVE APPROXIMATION
JESD-30 代码:R-PBGA-B36长度:15 mm
湿度敏感等级:3模拟输入通道数量:8
功能数量:1端子数量:36
最高工作温度:85 °C最低工作温度:-40 °C
输出位码:BINARY输出格式:SERIAL
封装主体材料:PLASTIC/EPOXY封装代码:BGA
封装形状:RECTANGULAR封装形式:GRID ARRAY
峰值回流温度(摄氏度):260采样速率:100 MHz
座面最大高度:2.26 mm标称供电电压:5 V
表面贴装:YES温度等级:INDUSTRIAL
端子形式:BALL端子节距:1 mm
端子位置:BOTTOM处于峰值回流温度下的最长时间:30
宽度:6.25 mmBase Number Matches:1

LTM2893 数据手册

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LTM2893/LTM2893-1  
100MHz Isolated ADC  
Serial Interface  
FEATURES  
DESCRIPTION  
n
Isolate5 Interface: 6ꢀꢀꢀ4  
for 1 Minute  
The LTM®2893 is a high speed isolated μModule  
(micromodule)SPIinterfacewithADCcontrolsignals.The  
LTM2893 is optimized for isolating 1Msps high resolution  
18-bitSARADCs,suchastheLTC2338andsimilarfamilies,  
and can interface with most general purpose ADCs. The  
LTM2893-1 is optimized for isolating the LTC2348 and  
similarfamiliesofsimultaneoussamplingADCsthatrequire  
writing configuration settings into the ADC. LTM2893  
isolates the conversion start, sampling signal, with very  
low aperture jitter (30ps) and low latency (20ns).  
ꢃMꢂ  
n
UL-CꢂA ꢃecognition Pen5ing  
n
n
n
n
n
n
n
n
n
n
1ꢀꢀMHz ꢂPI-Compatible I/O  
Configurable ꢂPI Wor5 Length 8 to 32 dits  
Low Jitter Conversion ꢂtart (3ꢀps  
Supports Simultaneously Sampled ADCs  
Read Only (LTM2893), Read/Write (LTM2893-1)  
Three Isolated Multiplexer Select Signals  
1.71V to 5.5V I/O Voltages  
3V to 5.5V Supply Voltages  
High Common Mode Transient Immunity  
15mm × 6.25mm BGA Package  
)
ꢃMꢂ  
The interface enables fast throughput with no cycle  
latency, which makes the LTM2893 ideally suited for a  
wide variety of applications. The LTM2893 has a high  
speed SPI-compatible serial port that supports 1.71V to  
5.5V logic and is configurableforADCswith 8 to32 bit SPI  
word lengths. It also isolates three select signals (SA, SB,  
SC) for controlling analog multiplexers or gain settings.  
APPLICATIONS  
n
Remote Sensing  
n
High Speed Data Acquisition  
n
Industrial Process Control  
Test and Measurement Equipment  
The isolation barrier tolerates large voltage ground  
variations between the logic interface and the isolated  
side of the LTM2893. Uninterrupted communication is  
maintainedduringvoltagetransientsgreaterthan50kV/µs.  
n
L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks  
and SoftSpan is a trademark of Analog Devices, Inc. All other trademarks are the property of  
their respective owners.  
TYPICAL APPLICATION  
LTC2328-18 ADC Isolation AIN = 1ꢀ02ꢁ4V ꢂNꢃ = ꢄ95d  
3.3Vi  
5Vi  
LTC6655-2.048  
+15Vi  
V
V
3.3V  
IN  
OUT_F  
1µF  
5V  
5Vi  
3.3Vi  
SHDN  
V
OUT_S  
2.2µF  
V
L
V
V
V
L2  
CC  
CC2  
0.1µF  
10µF  
LTM2893  
500Ω  
6.8nF  
MASTER  
FPGA  
10V  
47µF  
+
IN  
OV  
CNV  
BUSY  
V
REFIN  
DD  
INPUT  
DD  
CNV  
BUSY  
SS  
SCK  
MISOA  
CNV2  
BUSY2  
SS2  
SCK2  
MISOA2  
REFBUF  
CNV  
BUSY  
CNV2  
BUSY2  
LT1468  
OUT  
20Ω  
3.3nF  
20Ω  
+
IN  
IN  
SPI  
INTERFACE  
LTC2328-18  
SPI  
INTERFACE  
SCK  
SDO  
RDL  
CHAIN  
IN  
BUFFER  
INPUT  
RETURN  
SA  
SB  
SC  
SA2  
SB2  
SC2  
VDDLBYP  
1µF  
SELECT  
SELECT2  
2.2µF  
–15Vi  
28931 TA01a  
28931fb  
1
For more information www.linear.com/LTM2893  

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