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LTC1400 PDF预览

LTC1400

更新时间： 2024-01-25 09:34:21
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
20页 518K
描述
Complete SO-8, 12-Bit, 400ksps ADC with Shutdown

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中文翻译

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LTC1400 技术参数

是否无铅： 不含铅生命周期：Active
零件包装代码：SOIC包装说明：0.150 INCH, LEAD FREE, PLASTIC, SOP-8
针数：8Reach Compliance Code：unknown
风险等级：5.32Base Number Matches：1

LTC1400 数据手册

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LTC1400  
Complete SO-8, 12-Bit,  
400ksps ADC with Shutdown  
U
FEATURES  
DESCRIPTION  
The LTC®1400 is a complete 400ksps, 12-bit A/D con-  
verterwhichdrawsonly75mWfroma5Vor± 5Vsupplies.  
This easy-to-use device comes complete with a 200ns  
sample-and-hold and a precision reference. Unipolar and  
bipolar conversion modes add to the flexibility of the ADC.  
The LTC1400 has two power saving modes: Nap and  
Sleep. In Nap mode, it consumes only 6mW of power and  
can wake up and convert immediately. In the Sleep mode,  
it consumes 30µW of power typically. Upon power-up  
from Sleep mode, a reference ready (REFRDY) signal is  
available in the serial data word to indicate that the  
reference has settled and the chip is ready to convert.  
■
Complete 12-Bit ADC in SO-8  
Single Supply 5V or ±5V Operation  
■
■
■
■
■
■
■
■
■
■
■
Sample Rate: 400ksps  
Power Dissipation: 75mW (Typ)  
72dB S/(N + D) and –80dB THD at Nyquist  
No Missing Codes over Temperature  
Nap Mode with Instant Wake-Up: 6mW  
Sleep Mode: 30µW  
High Impedance Analog Input  
Input Range (1mV/LSB): 0V to 4.096 or ± 2.048V  
Internal Reference Can Be Overdriven Externally  
3-Wire Interface to DSPs and Processors (SPI and  
MICROWIRETM Compatible)  
The LTC1400 converts 0V to 4.096V unipolar inputs from  
a single 5V supply and ±2.048V bipolar inputs from ±5V  
supplies. Maximum DC specs include ±1LSB INL, ±1LSB  
DNLand45ppm/°Cdriftovertemperature. GuaranteedAC  
performance includes 70dB S/(N + D) and –76dB THD at  
an input frequency of 100kHz, over temperature.  
U
APPLICATIONS  
■
High Speed Data Acquisition  
■
Digital Signal Processing  
■
Multiplexed Data Acquisition Systems  
Audio and Telecom Processing  
Digital Radio  
Spectrum Analysis  
Low Power and Battery-Operated Systems  
Handheld or Portable Instruments  
■
The 3-wire serial port allows compact and efficient data  
transfertoawiderangeofmicroprocessors,microcontrollers  
and DSPs.  
■
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
MICROWIRE is a trademark of National Semiconductor Corp.  
■
U
TYPICAL APPLICATION  
Power Consumption vs Sample Rate  
Single 5V Supply, 400kHz, 12-Bit Sampling A/D Converter  
100  
5V  
1
8
NORMAL CONVERSION  
10  
V
V
SS  
CC  
+
10µF  
0.1µF  
NAP MODE  
BETWEEN CONVERSION  
1
MPU  
P1.4  
LTC1400  
2
7
ANALOG INPUT  
(0V TO 4.096V)  
A
V
CONV  
CLK  
IN  
SLEEP AND NAP MODE  
3
4
6
5
2.42V REF  
P1.3  
P1.2  
REF  
OUT  
0.1  
0.01  
BETWEEN CONVERSION  
+
GND  
D
SLEEP MODE BETWEEN  
CONVERSION  
10µF  
0.1µF  
OUT  
SERIAL  
DATA LINK  
LTC1400 • TA01  
6.4MHz CLOCK  
0.001  
100  
SAMPLE RATE (Hz)  
0.01 0.1  
1
10  
1k 10k 100k 1M  
LTC1400 • TA02  
1
1234567...20

中文翻译

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