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LTC1745IFW PDF预览

LTC1745IFW

更新时间: 2024-02-12 19:22:27
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
20页 204K
描述
Low Noise,12-Bit, 25Msps ADC

LTC1745IFW 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:TSSOP,
针数:48Reach Compliance Code:compliant
风险等级:5.72最大模拟输入电压:1.6 V
最小模拟输入电压:-1 V转换器类型:ADC, FLASH METHOD
JESD-30 代码:R-PDSO-G48JESD-609代码:e3
长度:12.5 mm最大线性误差 (EL):0.0244%
湿度敏感等级:1模拟输入通道数量:1
位数:12功能数量:1
端子数量:48最高工作温度:85 °C
最低工作温度:-40 °C输出位码:OFFSET BINARY, 2'S COMPLEMENT BINARY
输出格式:PARALLEL, WORD封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
采样速率:25 MHz采样并保持/跟踪并保持:SAMPLE
座面最大高度:1.2 mm标称供电电压:5 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.5 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:6.1 mmBase Number Matches:1

LTC1745IFW 数据手册

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LTC1745  
Low Noise,12-Bit, 25Msps ADC  
U
DESCRIPTIO  
FEATURES  
The LTC®1745 is a 25Msps, sampling 12-bit A/D con-  
verter designed for digitizing high frequency, wide dy-  
namic range signals. Pin selectable input ranges of ±1V  
and ±1.6V along with a resistor programmable mode  
allowtheLTC1745’sinputrangetobeoptimizedforawide  
variety of applications.  
Sample Rate: 25Msps  
72.5dB SNR and 91dB SFDR (3.2V Range)  
71dB SNR and 96dB SFDR (2V Range)  
No Missing Codes  
Single 5V Supply  
Low Power Dissipation: 380mW  
Selectable Input Ranges: ±1V or ±1.6V  
The LTC1745 is perfect for demanding communications  
applications with AC performance that includes 72.5dB  
SNRand91dBspuriousfreedynamicrange.Ultralowjitter  
of 0.3psRMS allows undersampling with excellent noise  
performance. DC specs include ±1LSB INL maximum and  
±0.75LSB DNL over temperature.  
240MHz Full Power Bandwidth S/H  
Pin Compatible Family  
25 Msps: LTC1746 (14-Bit), LTC1745 (12-Bit)  
50 Msps: LTC1744 (14-Bit), LTC1743 (12-Bit)  
65 Msps: LTC1742 (14-Bit), LTC1741 (12-Bit)  
80 Msps: LTC1748 (14-Bit), LTC1747 (12-Bit)  
Thedigitalinterfaceiscompatiblewith5V, 3Vand2Vlogic  
systems. The ENC and ENC inputs may be driven differen-  
tiallyfromPECL, GTLandotherlowswinglogicfamiliesor  
from single-ended TTL or CMOS. The low noise, high gain  
ENC and ENC inputs may also be driven by a sinusoidal  
signal without degrading performance. A separate digital  
output power supply can be operated from 0.5V to 5V,  
making it easy to connect directly to low voltage DSPs  
or FIFOs.  
U
APPLICATIO S  
Telecommunications  
Medical Imaging  
Receivers  
Base Stations  
Spectrum Analysis  
Imaging Systems  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
The TSSOP package with a flow-through pinout simplifies  
the board layout.  
W
BLOCK DIAGRA  
25Msps, 12-Bit ADC with a ±1V Differential Input Range  
OV  
DD  
0.5V TO 5V  
0.1µF  
+
A
0.1µF  
IN  
OF  
±1V  
DIFFERENTIAL  
ANALOG INPUT  
12  
D11  
S/H  
AMP  
12-BIT  
PIPELINED ADC  
OUTPUT  
LATCHES  
D0  
CLKOUT  
A
IN  
SENSE  
OGND  
BUFFER  
V
DD  
5V  
RANGE  
SELECT  
1µF  
1µF  
1µF  
DIFF AMP  
V
CM  
GND  
2.35V  
REF  
CONTROL LOGIC  
4.7µF  
1745 BD  
REFLB REFHA  
4.7µF  
REFLA REFHB  
ENC ENC MSBINV  
OE  
0.1µF  
0.1µF  
DIFFERENTIAL  
ENCODE INPUT  
1µF  
1µF  
1745f  
1

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