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LTC1409IG#TR PDF预览

LTC1409IG#TR

更新时间: 2024-11-26 13:09:47
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
20页 411K
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LTC1409IG#TR 数据手册

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LTC1409  
12-Bit, 800ksps Sampling  
A/D Converter with Shutdown  
U
DESCRIPTIO  
EATURE  
S
F
Sample Rate: 800ksps  
The LTC®1409 is a 1µs, 800ksps, sampling 12-bit A/D  
converter that draws only 80mW from ±5V supplies. This  
easy-to-use device includes a high dynamic range sample-  
and-holdandaprecisionreference.Twodigitallyselectable  
power Shutdown modes provide flexibility for low power  
systems.  
Power Dissipation: 80mW  
72.5dB S/(N + D) and 86dB THD at Nyquist  
No Pipeline Delay  
Nap (4mW) and Sleep (10µW) Shutdown Modes  
Operates with Internal 15ppm/°C Reference  
or External Reference  
True Differential Inputs Reject Common Mode Noise  
20MHz Full Power Bandwidth Sampling  
±2.5V Bipolar Input Range  
The LTC1409 full-scale input range is ±2.5V. Maximum  
DC specs include ±1LSB INL and ±1LSB DNL over tem-  
perature. Outstanding AC performance includes 72.5dB  
S/(N + D) at the Nyquist input frequency of 400kHz.  
28-Pin SO Wide and SSOP Package  
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.  
O U  
PPLICATI  
S
A
Telecommunications  
Digital Signal Processing  
Multiplexed Data Acquisition Systems  
High Speed Data Acquisition  
Spectrum Analysis  
The ADC has a µP compatible, 12-bit parallel output port.  
There is no pipeline delay in the conversion results.  
A separate convert start input and a data ready signal  
(BUSY) ease connections to FIFOs, DSPs and micropro-  
cessors. A digital output driver power supply pin allows  
direct connection to 3V logic.  
Imaging Systems  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
O
TYPICAL APPLICATI  
Effective Bits and Signal-to-(Noise + Distortion)  
vs Input Frequency  
800kHz, 12-Bit Sampling A/D Converter  
LTC1409  
12  
10  
8
74  
68  
62  
56  
50  
5V  
DIFFERENTIAL  
ANALOG INPUT  
(–2.5V TO 2.5V)  
1
2
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
+A  
–A  
AV  
OV  
IN  
DD  
NYQUIST  
FREQUENCY  
–5V  
IN  
DD  
3
10µF  
2.50V  
OUTPUT  
V
V
SS  
REF  
V
REF  
4
10µF  
REFCOMP  
AGND  
BUSY  
CS  
5
10µF  
6
6
D11(MSB) CONVST  
µP CONTROL  
LINES  
7
D10  
D9  
RD  
SHDN  
NAP/SLP  
OGND  
D0  
8
4
9
D8  
10  
11  
12  
13  
14  
2
D7  
12-BIT  
PARALLEL  
BUS  
f
= 800ksps  
10k  
D6  
SAMPLE  
0
D5  
D1  
1k  
100k  
1M  
10M  
D4  
D2  
INPUT FREQUENCY (Hz)  
DGND  
D3  
LTC1409 • TA02  
LTC1409 • TA01  
1

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