参数资料
型号: LTC1747CFW#PBF
厂商: Linear Technology
文件页数: 7/20页
文件大小: 0K
描述: IC ADC 12BIT 80MSPS 48-TSSOP
标准包装: 39
位数: 12
采样率(每秒): 80M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 1.55W
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: 48-TFSOP(0.240",6.10mm 宽)
供应商设备封装: 48-TSSOP
包装: 管件
输入数目和类型: 2 个单端,双极;1 个差分,双极
15
LTC1747
1747fa
Any noise present on the encode signal will result in
additional aperture jitter that will be RMS summed with the
inherent ADC aperture jitter.
In applications where jitter is critical (high input frequen-
cies) take the following into consideration:
1. Differential drive should be used.
2. Use as large an amplitude as possible; if transformer
coupled use a higher turns ratio to increase the
amplitude.
3. If the ADC is clocked with a sinusoidal signal, filter the
encode signal to reduce wideband noise.
4. Balance the capacitance and series resistance at both
encode inputs so that any coupled noise will appear at
both inputs as common mode noise.
APPLICATIO S I FOR ATIO
WU
UU
VDD
LTC1747
1747 F07
BIAS
VDD
5V
ENC
ANALOG INPUT
2V BIAS
1:4
0.1
F
CLOCK
INPUT
50
6k
TO INTERNAL
ADC CIRCUITS
Figure 7. Transformer Driven ENC/ENC
1747 F08a
ENC
2V
VTHRESHOLD = 2V
ENC
0.1
F
LTC1747
1747 F08b
ENC
130
3.3V
130
D0
Q0
MC100LVELT22
LTC1747
83
83
Figure 8a. Single-Ended ENC Drive,
Not Recommended for Low Jitter
Figure 8b. ENC Drive Using a CMOS-to-PECL Translator
The encode inputs have a common mode range of 1.8V to
VDD. Each input may be driven from ground to VDD for
single-ended drive.
Maximum and Minimum Encode Rates
The maximum encode rate for the LTC1747 is 80Msps. For
the ADC to operate properly the encode signal should have
a 50% (
±4%) duty cycle. Each half cycle must have at least
6ns for the ADC internal circuitry to have enough settling
time for proper operation. Achieving a precise 50% duty
cycle is easy with differential sinusoidal drive using a
transformer or using symmetric differential logic such as
PECL or LVDS. When using a single-ended encode signal
asymmetric rise and fall times can result in duty cycles that
are far from 50%.
相关PDF资料
PDF描述
MAX3443EASA+T IC TXRX RS-485 8-SOIC
MS27467E21B16SB CONN PLUG 16POS STRAIGHT W/SCKT
VI-2N1-IU-F2 CONVERTER MOD DC/DC 12V 200W
VI-BTJ-MW-F2 CONVERTER MOD DC/DC 36V 100W
MAX251CSD+T IC RS-232 DRVR RX 5V 14-SOIC
相关代理商/技术参数
参数描述
LTC1747IFW 功能描述:IC ADC SMPL 12BIT 80MSPS 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 系列:- 位数:14 采样率(每秒):83k 数据接口:串行,并联 转换器数目:1 功率耗散(最大):95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP(0.600",15.24mm) 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端,双极
LTC1747IFW#PBF 功能描述:IC ADC 12BIT 80MSPS 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:-
LTC1747IFW#TR 功能描述:IC ADC SMPL 12BIT 80MSPS 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 系列:- 位数:14 采样率(每秒):83k 数据接口:串行,并联 转换器数目:1 功率耗散(最大):95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP(0.600",15.24mm) 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端,双极
LTC1747IFW#TRPBF 功能描述:IC ADC 12BIT 80MSPS 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:-
LTC1748CFW 功能描述:IC ADC 14BIT 80MSPS 48-TSSOP 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 系列:- 位数:14 采样率(每秒):83k 数据接口:串行,并联 转换器数目:1 功率耗散(最大):95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP(0.600",15.24mm) 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端,双极