- 您现在的位置：买卖IC网 > PDF目录10672 > LTC2410IGN#PBF (Linear Technology)IC ADC 24BIT DIFF INP/REF 16SSOP PDF资料下载
参数资料
| 型号： | LTC2410IGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 26/48页 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT DIFF INP/REF 16SSOP |
| 标准包装： | 100 |
| 位数： | 24 |
| 采样率（每秒）： | 7.5 |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 1mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
| 输入数目和类型： | 1 个差分，双极 |
| 配用： | DC575A-ND - BOARD DELTA SIGMA ADC LTC2410 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页
LTC2410
32
APPLICATIO S I FOR ATIO
WU
U
When external amplifiers are driving the LTC2410, the
ADC input referred system noise calculation can be simpli-
fied by Figure 36. The noise of an amplifier driving the
LTC2410 input pin can be modeled as a band limited white
noise source. Its bandwidth can be approximated by the
bandwidth of a single pole lowpass filter with a corner
frequency fi. The amplifier noise spectral density is ni.
From Figure 36, using fi as the x-axis selector, we can find
on the y-axis the noise equivalent bandwidth freqi of the
input driving amplifier. This bandwidth includes the band
limiting effects of the ADC internal calibration and filtering.
The noise of the driving amplifier referred to the converter
input and including all these effects can be calculated as
N = ni √freqi. The total system noise (referred to the
LTC2410 input) can now be obtained by summing as
square root of sum of squares the three ADC input referred
noise sources: the LTC2410 internal noise (800nV), the
noise of the IN+ driving amplifier and the noise of the IN–
driving amplifier.
If the FO pin is driven by an external oscillator of frequency
fEOSC, Figure 36 can still be used for noise calculation if the
x-axis is scaled by fEOSC/153600. For large values of the
ratio fEOSC/153600, the Figure 36 plot accuracy begins to
decrease, but in the same time the LTC2410 noise floor
rises and the noise contribution of the driving amplifiers
lose significance.
Normal Mode Rejection and Antialiasing
One of the advantages delta-sigma ADCs offer over con-
ventional ADCs is on-chip digital filtering. Combined with
a large oversampling ratio, the LTC2410 significantly
simplifies antialiasing filter requirements.
The Sinc4 digital filter provides greater than 120dB normal
mode rejection at all frequencies except DC and integer
multiples of the modulator sampling frequency (fS). The
LTC2410’s autocalibration circuits further simplify the
antialiasing requirements by additional normal mode sig-
nal filtering both in the analog and digital domain. Inde-
pendent of the operating mode, fS = 256 fN = 2048
fOUTMAX where fN in the notch frequency and fOUTMAX is
the maximum output data rate. In the internal oscillator
mode with a 50Hz notch setting, fS = 12800Hz and with a
60Hz notch setting fS = 15360Hz. In the external oscillator
mode, fS = fEOSC/10.
Figure 37. Input Normal Mode Rejection,
Internal Oscillator and 50Hz Notch
Figure 38. Input Normal Mode Rejection, Internal
Oscillator and 60Hz Notch or External Oscillator
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
0fS 2fS 3fS 4fS 5fS 6fS 7fS 8fS 9fS10fS11fS12fS
INPUT
NORMAL
MODE
REJECTION
(dB)
2410 F37
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
FO = HIGH
FO = LOW OR
FO = EXTERNAL OSCILLATOR,
fEOSC = 10 fS
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
0fS
INPUT
NORMAL
MODE
REJECTION
(dB)
2410 F38
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
2fS 3fS 4fS 5fS 6fS 7fS 8fS 9fS 10fS
Figure 36. Input Referred Noise Equivalent Bandwidth
of an Input Connected White Noise Source
INPUT NOISE SOURCE SINGLE POLE
EQUIVALENT BANDWIDTH (Hz)
1
INPUT
REFERRED
NOISE
EQUIVALENT
BANDWIDTH
(Hz)
10
0.1
1
10
100
1k
10k
100k
1M
2410 F36
0.1
100
FO = HIGH
FO = LOW
相关PDF资料 |
PDF描述 |
|---|---|
| AD7680BRMZ | IC ADC 16BIT LP UNIPOLAR 8-MSOP |
| AD7472ARUZ | IC ADC 12BIT PAR 1.5MSPS 24TSSOP |
| ISL3333IRZ | IC TXRX RS485/422 2PRT 40-QFN |
| LTC1594IS#PBF | IC A/D CONV 12BIT SRL 4CH 16SOIC |
| ISL81334IAZ | IC TXRX DUAL 2PORT ESD 28-SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2411-1CMS | 功能描述:IC A/DCONV DIFF INPUT&REF 10MSOP 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 |
| LTC2411-1CMS#PBF | 功能描述:IC A/DCONV DIFF INPUT&REF 10MSOP 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: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 |
| LTC2411-1CMS#TR | 功能描述:IC A/DCONV DIFF INPUT&REF 10MSOP 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 |
| LTC2411-1CMS#TRPBF | 功能描述:IC A/DCONV DIFF INPUT&REF 10MSOP 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: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 |
| LTC2411-1CMSPBF | 制造商:Linear Technology 功能描述:ADC 24-Bit Differential and Ref. MSOP10 |
发布紧急采购，3分钟左右您将得到回复。