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LTC1419IG

更新时间： 2024-11-27 22:09:23
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
20页 404K
描述
14-Bit, 800ksps Sampling A/D Converter with Shutdown

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中文翻译

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LTC1419IG 数据手册

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LTC1419  
14-Bit, 800ksps Sampling  
A/D Converter with Shutdown  
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■
■
■
■
■
■
Sample Rate: 800ksps  
The LTC®1419 is a 1µs, 800ksps, 14-bit sampling  
A/D converter that draws only 150mW from ±5V supplies.  
This easy-to-use device includes a high dynamic range  
sample-and-hold and a precision reference. Two digitally  
selectable power shutdown modes provide flexibility for  
low power systems.  
Power Dissipation: 150mW  
81.5dB S/(N + D) and 93dB THD  
No Missing Codes  
No Pipeline Delay  
Nap and Sleep Shutdown Modes  
Operates with 2.5V Internal 15ppm/°C  
Reference or External Reference  
True Differential Inputs Reject Common Mode Noise  
20MHz Full-Power Bandwidth Sampling  
Bipolar Input Range: ±2.5V  
The LTC1419 has a full-scale input range of ±2.5V. Out-  
standing AC performance includes 81.5dB S/(N + D) and  
93dB THD with a 100kHz input; 80dB S/(N + D) and 86dB  
THD at the Nyquist input frequency of 400kHz.  
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Theuniquedifferentialinputsample-and-holdcanacquire  
single-ended or differential input signals up to its 20MHz  
bandwidth. The 60dB common mode rejection allows  
users to eliminate ground loops and common mode noise  
by measuring signals differentially from the source.  
28-Pin SSOP and SO Packages  
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Telecommunications  
Digital Signal Processing  
Multiplexed Data Acquisition Systems  
High Speed Data Acquisition  
Spectrum Analysis  
The ADC has a µP compatible, 14-bit parallel output port.  
There is no pipeline delay in the conversion results. A  
separate convert start input and data ready signal (BUSY)  
ease connections to FIFOs, DSPs and microprocessors.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Imaging Systems  
Effective Bits and Signal-to-(Noise + Distortion)  
800kHz, 14-Bit Sampling A/D Converter  
vs Input Frequency  
LTC1419  
5V  
14  
13  
12  
11  
10  
9
86  
80  
74  
68  
62  
1
2
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
DIFFERENTIAL  
ANALOG INPUT  
(–2.5V TO 2.5V)  
+A  
–A  
AV  
DV  
IN  
IN  
DD  
–5V  
V
DD  
REF  
3
10µF  
OUTPUT  
2.50V  
V
V
SS  
REF  
4
10µF  
REFCOMP  
AGND  
BUSY  
CS  
5
1µF  
10µF  
6
µP CONTROL  
LINES  
D13(MSB) CONVST  
8
7
D12  
D11  
D10  
D9  
RD  
SHDN  
D0  
7
8
6
9
5
10  
11  
12  
13  
14  
D1  
4
D8  
D2  
14-BIT  
PARALLEL  
BUS  
3
f
= 800kHz  
10k  
SAMPLE  
D7  
D3  
2
1k  
100k  
1M 2M  
D6  
D4  
INPUT FREQUENCY (Hz)  
DGND  
D5  
1419 TA02  
1419 TA01  
1
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中文翻译

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