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| 型号： | ADA4941-1YRZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/25页 |
| 文件大小： | 0K |
| 描述： | IC DIFF ADC DRIVER 18BIT 8SOIC |
| 设计资源： | Converting a Single-Ended Signal with AD7982 Differential PulSAR ADC (CN0032) Converting a Single-Ended Signal with AD7984 Differential PulSAR ADC (CN0033) |
| 标准包装： | 1,000 |
| 类型： | ADC 驱动器 |
| 应用： | 数据采集 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
ADA4941-1
Rev. C | Page 21 of 24
ADDING A 3-POLE, SALLEN-KEY FILTER
The noninverting amplifier in the ADA4941-1 can be used as
the buffer amplifier of a Sallen-Key filter. A 3-pole, low-pass
filter can be designed to limit the signal bandwidth in front of
an ADC. The input signal first passes through the noninverting
stage where it is filtered. The filtered signal is then passed through
the inverting stage to obtain the complementary output.
Figure 54 illustrates a 3-pole, Sallen-Key, low-pass filter with a
3 dB cutoff frequency of 100 kHz. The 1.69 k resistor is
included to minimize dc errors due to the input offset current
in A1. The passive RC filters on the outputs are generally
required by the ADC converter that is being driven. The
frequency response of the filter is shown in Figure 55.
1k
1k
500
A2
A1
REF
IN
2
8
4
2.7nF
5
FB
+5V
–5V
560pF
VS+
VS–
OUT+
+
–
VO, dm
1
3
OUT–
VIN
562
562
562
1.69k
33
33
6
05704-
058
0.1F
2.7nF
3.9nF
10nF
Figure 54. Sallen-Key, Low-Pass Filter with 100 kHz Cutoff Frequency
0
–100
10
100M
FREQUENCY (Hz)
V
O,
d
m
/V
IN
(
dB
)
05704-
059
–10
–20
–30
–40
–50
–60
–70
–80
–90
100
1k
10k
100k
1M
10M
VO, dm = 3V p-p
Figure 55. Frequency Response of the Circuit Shown in Figure 54
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADA4941-1YRZ-RL | 功能描述:IC DIFF ADC DRIVER 18BIT 8SOIC RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 专用 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:60 系列:- 类型:可变增益放大器 应用:CATV 安装类型:表面贴装 封装/外壳:20-WQFN 裸露焊盘 供应商设备封装:20-TQFN-EP（5x5） 包装:托盘 |
| ADA4950-1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Power, Selectable Gain Differential ADC Driver, G = 1, 2, 3 |
| ADA4950-1YCP-EBZ | 功能描述:BOARD EVAL FOR ADA4950-1YCP RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| ADA4950-1YCPZ-R2 | 制造商:Analog Devices 功能描述:SP Amp DIFF AMP Single ±5.5V/11V 16-Pin LFCSP EP T/R 制造商:Analog Devices 功能描述:FIXED GAIN 1,2&3 DIFF ADC DRIVER - Tape and Reel 制造商:Analog Devices 功能描述:SP Amp DIFF AMP Single }5.5V/11V 16-Pin LFCSP EP |
| ADA4950-1YCPZ-R7 | 功能描述:IC AMP DIFF LP 114MA 16LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
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