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LTC1402

更新时间： 2024-02-06 05:07:59
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
20页 254K
描述
Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown

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中文翻译

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LTC1402 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：SSOP,
针数：16Reach Compliance Code：compliant
风险等级：5.65最大模拟输入电压：2.048 V
最小模拟输入电压：-2.048 V转换器类型：ADC, SUCCESSIVE APPROXIMATION
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：4.9 mm最大线性误差 (EL)：0.0244%
湿度敏感等级：1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：16
最高工作温度：85 °C最低工作温度：-40 °C
输出位码：BINARY, 2'S COMPLEMENT BINARY输出格式：SERIAL
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
采样速率：2.2 MHz采样并保持/跟踪并保持：SAMPLE
座面最大高度：1.75 mm标称供电电压：5 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3.9116 mm
Base Number Matches：1

LTC1402 数据手册

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Final Electrical Specifications  
LTC1402  
Serial 12-Bit, 2.2Msps  
Sampling ADC with Shutdown  
U
October 1999  
FEATURES  
DESCRIPTION  
The LTC®1402 is a 12-bit, 2.2Msps sampling A/D con-  
verter. This high performance device includes a high dy-  
namic range sample-and-hold and a precision reference.  
It operates from a single 5V supply or dual ±5V supplies  
and draws only 90mW from 5V.  
■
Sample Rate: 2.2Msps  
■
72dB S/(N + D) and –89dB THD at Nyquist  
■
No Missing Codes over Temperature  
■
Available in 16-Pin Narrow SSOP Package  
■
Single Supply 5V or ±5V Operation  
■
Power Dissipation: 90mW (Typ)  
The versatile differential input offers a unipolar range of  
4.096V and a bipolar range of ±2.048V for dual supply  
systems where high performance op amps perform best,  
eliminating the need for special translation circuitry.  
■
Nap Mode with Instant Wake-Up: 15mW  
■
Sleep Mode: 10µW  
■
True Differential Inputs Reject Common Mode Noise  
■
80MHz Full Power Bandwidth Sampling  
The high common mode rejection allows users to elimi-  
nategroundloopsandcommonmodenoisebymeasuring  
signals differentially from the source.  
■
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)  
U
Outstanding AC performance includes 72dB S/(N + D) and  
–93dB SFDR at the Nyquist input frequency of 1.1MHz  
with dual ±5V supplies and –84dB SFDR with a single 5V  
supply.  
APPLICATIONS  
■
Telecommunications  
High Speed Data and Signal Acquisition  
Digitally Multiplexed Data Acquisition Systems  
Digital Radio Receivers  
Spectrum Analysis  
■
The LTC1402 has two power saving modes: Nap and  
Sleep. Nap mode consumes only 15mW of power and  
Sleep can wake up and convert immediately. In Sleep  
mode, ittypicallyconsumes10µWofpower. 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.  
■
■
■
■
■
■
Low Power and Battery-Operated Systems  
Handheld or Portable Instruments  
Imaging Systems  
The 3-wire serial port allows compact and efficient data  
transfer to a wide range of microprocessors, microcon-  
trollers and DSPs. A digital output driver power supply pin  
allows direct connection to 3V or lower logic.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
MICROWIRE is a trademark of National Semiconductor Corp.  
W
BLOCK DIAGRA  
5V  
3V OR 5V  
5 Harmonic THD, 2nd, 3rd and SFDR  
vs Input Frequency (Unipolar)  
1
AV  
DD  
12 DV  
11 OV  
DD  
DD  
10µF  
0
THD  
SFDR  
–10  
3
+A  
IN  
–20  
–30  
2ND  
3RD  
SAMPLE-  
10  
OUTPUT  
BUFFER  
12-BIT ADC  
D
OUT  
AND-HOLD  
f
= 2.22MHz  
4
5
SAMPLE  
–40  
–A  
V
IN  
–50  
4.096V  
–60  
REF  
10µF  
64k  
64k  
–70  
–
+
–80  
8
BIP/UNI  
CONV  
SCK  
–90  
16  
15  
7
2.048  
REFERENCE  
TIMING  
LOGIC  
–100  
–110  
–120  
GAIN  
LTC1402  
1402 TA01  
14  
10µF  
–5V OR 0V  
V
SS  
2
AGND1  
6
AGND2  
13 DGND  
9 OGND  
4
5
6
7
10  
10  
10  
10  
INPUT FREQUENCY (Hz)  
1401 G05  
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-  
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.  
1
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中文翻译

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