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LTC1277CS PDF预览

LTC1277CS

更新时间： 2024-09-23 22:57:35
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
20页 414K
描述
12-Bit, 10mW, 100ksps ADCs with 1uA Shutdown

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中文翻译

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LTC1277CS 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SOP, SOP24,.4
针数：24Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.35最大模拟输入电压：2.048 V
最小模拟输入电压：-2.048 V最长转换时间：8 µs
转换器类型：ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码：R-PDSO-G24
JESD-609代码：e0长度：15.4 mm
最大线性误差 (EL)：0.0244%标称负供电电压：-5 V
模拟输入通道数量：1位数：12
功能数量：1端子数量：24
最高工作温度：70 °C最低工作温度：
输出位码：OFFSET BINARY输出格式：PARALLEL, 8 BITS
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP24,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：245
电源：-2.7/5,3/5,5 V认证状态：Not Qualified
采样速率：0.1 MHz采样并保持/跟踪并保持：SAMPLE
座面最大高度：2.65 mm子类别：Analog to Digital Converters
最大压摆率：4 mA标称供电电压：5 V
表面贴装：YES技术：CMOS
温度等级：COMMERCIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：7.5 mmBase Number Matches：1

LTC1277CS 数据手册

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LTC1274/LTC1277  
12-Bit, 10mW, 100ksps  
ADCs with 1µA Shutdown  
U
DESCRIPTIO  
EATURE  
Low Power Dissipation: 10mW  
Sample Rate: 100ksps  
Samples Inputs Beyond Nyquist, 72dB S/(N + D)  
and 82dB THD at fIN = 100kHz  
Single Supply 5V or ±5V Operation  
Power Shutdown to 1µA in Sleep Mode  
180µA Nap Mode (LTC1277) with Instant Wake-Up  
Internal Reference Can Be Overdriven  
Internal Synchronized Clock  
S
F
The LTC®1274/LTC1277 are 8µs sampling 12-bit A/D  
converters which draw only 2mA (typ) from single 5V or  
±5V supplies. These easy-to-use devices come complete  
with a 2µs sample-and-hold, a precision reference and an  
internally trimmed clock. Unipolar and bipolar conversion  
modes add to the flexibility of the ADCs.  
■
■
■
■
■
■
■
■
■
■
Two power-down modes are available in the LTC1277. In  
Nap mode, the LTC1277 draws only 180µA and the instant  
wake-up from Nap mode allows the LTC1277 to be pow-  
ered down even during brief inactive periods. In Sleep  
mode only 1µA will be drawn. A REFRDY signal is used to  
show the ADC is ready to sample after waking up from  
Sleep mode. The LTC1274 also provides the Sleep mode  
and REFRDY signal.  
0V to 4.096V or ±2.048V Input Ranges (1mV/LSB)  
24-Lead SO Package  
O U  
PPLICATI  
A
S
■
■
■
■
■
■
Battery-Powered Portable Systems  
High Speed Data Acquisition for PCs  
Digital Signal Processing  
Multiplexed Data Acquisition Systems  
Audio and Telecom Processing  
Spectrum Analysis  
The A/D converters convert 0V to 4.096V unipolar inputs  
from a single 5V supply or ±2.048V bipolar inputs from  
±5V supplies.  
The LTC1274 has a single-ended input and a 12-bit  
parallel data format. The LTC1277 offers a differential  
input and a 2-byte read format. The bipolar mode is  
formatted as 2’s complement for the LTC1274 and offset  
binary for the LTC1277.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
O
TYPICAL APPLICATI  
Single 5V Supply, 10mW, 100kHz, 12-Bit ADC  
Supply Current vs Sample Rate with  
Sleep and Nap Modes  
LTC1277  
5V  
10000  
1
2
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
+
–
ANALOG  
DIFFERENTIAL INPUTS  
(0V TO 4.096V)  
C
REF  
= 4.7µF  
A
A
V
V
DD  
IN  
+
V
SS  
WITHOUT SLEEP OR NAP  
IN  
0.1µF  
10µF  
3
2.42V  
OUTPUT  
BUSY  
CS  
REF  
µP  
1000  
100  
10  
V
REF  
+
4
AGND  
REFRDY  
SLEEP  
NAP  
D7  
CONTROL  
LINES  
0.1µF  
NAP MODE  
10µF  
5
RD  
6
CONVST  
HBEN  
7
OPTIONAL 3V SUPPLY  
TO INTERFACE WITH 3V  
PROCESSOR  
NAP = REFRDY  
(SLEEP MODE)  
8
V
LOGIC  
D0/8  
9
D6  
10  
11  
12  
NAP = 5V  
(SLEEP MODE)  
D5  
D1/9  
8-BIT  
PARALLEL  
BUS  
D4  
D2/10  
D3/11  
DGND  
1
0.1  
1
10  
100  
1k  
10k  
100k  
SAMPLE RATE (Hz)  
LTC1274/77 • TA01  
LTC1274/77 • TA02  
1
1234567...20

中文翻译

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