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LTC1404

更新时间： 2024-02-08 02:15:24
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 458K
描述
Complete SO-8, 12-Bit, 600ksps ADC with Shutdown

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中文翻译

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LTC1404 数据手册

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LTC1404  
Complete SO-8, 12-Bit,  
600ksps ADC with Shutdown  
U
FEATURES  
DESCRIPTION  
The LTC®1404 is a complete 600ksps, 12-bit A/D con-  
verterwhichdrawsonly75mWfroma5Vor± 5Vsupplies.  
This easy-to-use device comes complete with a 160ns  
sample-and-hold and a precision reference. Unipolar and  
bipolar conversion modes add to the flexibility of the ADC.  
The LTC1404 has two power saving modes: Nap and  
Sleep. In Nap mode, it consumes only 7.5mW of power  
and can wake up and convert immediately. In the Sleep  
mode, itconsumes60µWofpowertypically. Uponpower-  
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: 600ksps  
Power Dissipation: 75mW (Typ)  
72dB S/(N + D) and –80dB THD at Nyquist  
No Missing Codes over Temperature  
Nap Mode with Instant Wake-Up: 7.5mW  
Sleep Mode: 60µW  
High Impedance Analog Input  
Input Range (1mV/LSB): 0V to 4.096V or ± 2.048V  
Internal Reference Can Be Overdriven Externally  
3-Wire Interface to DSPs and Processors (SPI and  
MICROWIRETM Compatible)  
The LTC1404 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  
DNL and 45ppm/°C full-scale drift over temperature.  
Guaranteed AC performance includes 69dB 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.  
■
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■
U
TYPICAL APPLICATION  
Power Consumption vs Sample Rate  
Single 5V Supply, 600kHz, 12-Bit Sampling A/D Converter  
100  
5V  
NORMAL CONVERSION  
1
8
V
CC  
V
SS  
10  
+
NAP MODE  
10µF*  
0.1µF  
BETWEEN CONVERSION  
MPU  
P1.4  
LTC1404  
1
2
7
ANALOG INPUT  
(0V TO 4.096V)  
A
V
CONV  
CLK  
IN  
SLEEP MODE  
BETWEEN CONVERSION  
3
4
6
5
REF  
2.43V  
10µF  
OUT  
0.1  
P1.3  
P1.2  
REF  
+
GND  
D
0.1µF  
OUT  
SERIAL  
DATA LINK  
0.01  
9.6MHz CLOCK  
*AVX TPSD106M035R0300  
LTC1404 • TA01  
0.001  
0.01 0.1  
100  
SAMPLE RATE (Hz)  
1
10  
1k 10k 100k 1M  
LTC1404 • TA02  
1
1234567...24

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