参数资料
型号: LTC1740IG#TRPBF
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC ADC 14BIT 6MSPS 36SSOP
标准包装: 2,000
位数: 14
采样率(每秒): 6M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 300mW
电压电源: 双 ±
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 36-SSOP(0.209",5.30mm 宽)
供应商设备封装: 36-SSOP
包装: 带卷 (TR)
输入数目和类型: 2 个单端,双极;1 个差分,双极
11
LTC1740
1740f
APPLICATIO S I FOR ATIO
WU
UU
1740 F07
+AIN
VSS
VIN
1
F
0V
C
RR
LTC1740
5V
–AIN
VCM
Figure 7. AC Coupling to the LTC1740. Note That the Input Signal
Can Almost Always Be Directly Coupled with Better Performance
1740 F06
+AIN
VSS
VIN
1
F
2.500V
0V
5V
1.25V
LTC1740
5V
–AIN
VREF
SENSE
Figure 6. DC Coupling a 0V to 2.5V Signal
AC Coupling the Input
The analog inputs to the LTC1740 can also be AC coupled
through a capacitor, though in most cases it is simpler to
directly couple the input to the ADC. Figure 7 shows an
example where the input signal is centered around ground
and the ADC operates from a single 5V supply. Note that
the performance would improve if the ADC was operated
from a dual supply and the input was directly coupled (as
in Figure 4). With AC coupling the DC resistance to ground
should be roughly matched for AIN+ and AIN– to maintain
offset accuracy.
1740 F05
1
F
+AIN
VSS
VIN
2.5V
LTC1740
5V
–AIN
VCM
Figure 5. DC Coupling a Signal Centered Around
2.5V (Single Supply System)
1405 F04
1
F
+AIN
VSS
VIN
0V
LTC1740
5V
–5V
–AIN
VCM
Figure 4. DC Coupling a Ground Centered Signal
(Dual Supply System)
Differential Operation
The THD and SFDR performance of the LTC1740 can be
improved by using a center tap RF transformer to drive the
inputs differentially. Though the signal can no longer be
DC coupled, the improvement in dynamic performance
makes this an attractive solution for some applications.
Typical connections for single and dual supply systems
are shown in Figures 8a and 8b. Good choices for trans-
formers are the Mini Circuits T1-1T (1:1 turns ratio) and
T4-6T (1:4 turns ratio). For best results the transformer
should be located close to the LTC1740 on the printed
circuit board.
1740 F08a
+AIN
VSS
VIN
1000pF
15
15
MINI CIRCUITS
T1-1T
1
F
LTC1740
5V
–AIN
VCM
Figure 8a. Single Supply Transformer Coupled Input
1740 F08b
+AIN
VSS
VIN
MINI CIRCUITS
T1-1T
1
F
LTC1740
5V
–5V
–AIN
VCM
1000pF
15
15
Figure 8b. Dual Supply Transformer Coupled Input
相关PDF资料
PDF描述
LTC1741IFW#PBF IC ADC 12BIT 65MSPS 48-TSSOP
LTC1742CFW#TRPBF IC ADC 14BIT 65MSPS 48-TSSOP
LTC1743IFW#PBF IC ADC 12BIT 50MSPS SMPL 48TSSOP
LTC1744IFW#TRPBF IC ADC 14BIT 50MSPS 48-TSSOP
LTC1745CFW#TRPBF IC ADC 12BIT 25MSPS LN 48TSSOP
相关代理商/技术参数
参数描述
LTC1741CFW 功能描述:IC ADC 12BIT 65MSPS 48-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 其它有关文件:TSA1204 View All Specifications 标准包装:1 系列:- 位数:12 采样率(每秒):20M 数据接口:并联 转换器数目:2 功率耗散(最大):155mW 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-TQFP 供应商设备封装:48-TQFP(7x7) 包装:Digi-Reel® 输入数目和类型:4 个单端,单极;2 个差分,单极 产品目录页面:1156 (CN2011-ZH PDF) 其它名称:497-5435-6
LTC1741CFW#PBF 功能描述:IC ADC 12BIT 65MSPS 48-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率(每秒):3M 数据接口:- 转换器数目:- 功率耗散(最大):- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:-
LTC1741CFW#TR 功能描述:IC ADC SMPL 12BIT 65MSPS 48TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率(每秒):300k 数据接口:并联 转换器数目:1 功率耗散(最大):75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC(0.295",7.50mm 宽) 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端,单极;1 个单端,双极
LTC1741CFW#TRPBF 功能描述:IC ADC 12BIT 65MSPS 48-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率(每秒):3M 数据接口:- 转换器数目:- 功率耗散(最大):- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:-
LTC1741IFW 功能描述:IC ADC SMPL 12BIT 65MSPS 48TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率(每秒):300k 数据接口:并联 转换器数目:1 功率耗散(最大):75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC(0.295",7.50mm 宽) 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端,单极;1 个单端,双极