参数资料
型号: LTC1419ISW
厂商: Linear Technology
文件页数: 19/20页
文件大小: 0K
描述: IC A/D CONV 14BIT SAMPLNG 28SOIC
标准包装: 27
位数: 14
采样率(每秒): 800k
数据接口: 并联
转换器数目: 1
功率耗散(最大): 240mW
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: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC
包装: 管件
输入数目和类型: 2 个单端,双极;1 个差分,双极
8
LTC1419
1419fb
APPLICATIONS INFORMATION
WU
U
frequencies outside the fundamental. Figure 2 shows a
typical LTC1419 FFT plot.
Effective Number of Bits
The effective number of bits (ENOBs) is a measurement of
the resolution of an ADC and is directly related to the
S/(N + D) by the equation:
N = [S/(N + D) – 1.76]/6.02
where N is the effective number of bits of resolution and
S/(N + D) is expressed in dB. At the maximum sampling
rate of 800kHz, the LTC1419 maintains near ideal ENOBs
up to the Nyquist input frequency of 400kHz (refer to
Figure 3).
FREQUENCY (kHz)
0
AMPLITUDE
(dB)
–60
–40
–20
300
1419 F02a
–80
–100
100
200
400
250
50
150
350
–120
–140
0
fSAMPLE = 800kHz
fIN = 99.804687kHz
SFDR = 98dB
THD = –93.3dB
Figure 2a. LTC1419 Nonaveraged, 4096 Point FFT,
Input Frequency = 100kHz
FREQUENCY (kHz)
0
AMPLITUDE
(dB)
–60
–40
–20
300
1419 F02b
–80
–100
100
200
400
250
50
150
350
–120
–140
0
fSAMPLE = 800kHz
fIN = 375kHz
SFDR = 88.3dB
SINAD = 80.1
Figure 2b. LTC1419 Nonaveraged, 4096 Point FFT,
Input Frequency = 375kHz
Signal-to-Noise Ratio
The signal-to-noise plus distortion ratio [S/(N + D)] is the
ratio between the RMS amplitude of the fundamental input
frequency to the RMS amplitude of all other frequency
components at the A/D output. The output is band limited
to frequencies from above DC and below half the sampling
frequency. Figure 2 shows a typical spectral content with
a 800kHz sampling rate and a 100kHz input. The dynamic
performance is excellent for input frequencies up to and
beyond the Nyquist limit of 400kHz.
Total Harmonic Distortion
Total harmonic distortion (THD) is the ratio of the RMS
sum of all harmonics of the input signal to the fundamental
itself. The out-of-band harmonics alias into the frequency
band between DC and half the sampling frequency. THD is
expressed as:
THD
Log
VVV
Vn
V
=
++
+…
20
23
4
1
22
2
where V1 is the RMS amplitude of the fundamental fre-
quency and V2 through Vn are the amplitudes of the
second through nth harmonics. THD vs Input Frequency is
shown in Figure 4. The LTC1419 has good distortion
performance up to the Nyquist frequency and beyond.
INPUT FREQUENCY (Hz)
1k
EFFECTIVE
BITS
SIGNAL/(NOISE
+
DISTORTION)
(dB)
14
13
12
11
10
9
8
7
6
5
4
3
2
86
80
74
68
62
10k
100k
1419 TA02
1M
2M
fSAMPLE = 800kHz
Figure 3. Effective Bits and Signal/(Noise + Distortion)
vs Input Frequency
相关PDF资料
PDF描述
MS27474E10A5P CONN RCPT 5POS JAM NUT W/PINS
VE-J73-MX-S CONVERTER MOD DC/DC 24V 75W
VE-26M-CU-F4 CONVERTER MOD DC/DC 10V 200W
IDT72V273L10PFG IC FIFO SYNC II 3.3V 80-TQFP
VE-J72-MX-S CONVERTER MOD DC/DC 15V 75W
相关代理商/技术参数
参数描述
LTC1419ISW#PBF 功能描述:IC A/D CONV 14BIT SAMPLNG 28SOIC RoHS:是 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
LTC1419ISW#TR 功能描述:IC ADC 14BIT 800KSPS SHDN 28SOIC 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
LTC1419ISW#TRPBF 功能描述:IC A/D CONV 14BIT SAMPLNG 28SOIC 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:-
LTC1420CGN 功能描述:IC ADC 12BIT 10MSPS SAMPL 28SSOP 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:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC(0.295",7.50mm 宽) 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端,单极
LTC1420CGN#PBF 功能描述:IC ADC 12BIT 10MSPS SAMPL 28SSOP RoHS:是 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:microPOWER™ 位数:8 采样率(每秒):1M 数据接口:串行,SPI? 转换器数目:1 功率耗散(最大):- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘(4x4) 包装:Digi-Reel® 输入数目和类型:8 个单端,单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6