参数资料
| 型号： | AD712AQ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/20页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP BIFET DUAL PREC 8CDIP |
| 标准包装： | 48 |
| 放大器类型： | J-FET |
| 电路数： | 2 |
| 转换速率： | 20 V/µs |
| -3db带宽： | 4MHz |
| 电流 - 输入偏压： | 25pA |
| 电压 - 输入偏移： | 300µV |
| 电流 - 电源： | 5mA |
| 电流 - 输出 / 通道： | 25mA |
| 电压 - 电源，单路/双路(±)： | 9 V ~ 36 V，±4.5 V ~ 20 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-CERDIP |
| 包装： | 管件 |
| 产品目录页面： | 766 (CN2011-ZH PDF) |
AD712
Rev. H | Page 18 of 20
+15V
0.001F
100k
0.1F
–15V
+15V
0.1F
–15V
*
D
*
C
*
B
*
A
2800
6190
6490
6190
2800
VIN
0.001F
124k
4.99k
4.99k
VOUT
4.9395E–15
5.9276E–15
4.9395E–15
*SEE TEXT
A1
AD711
A2
AD711
+
–
+
–
00
82
3-
05
0
Figure 50. 9-Pole Chebychev Filter
9-POLE CHEBYCHEV FILTER
the AD711, as a 9-pole Chebychev filter using active frequency
dependent negative resistors (FDNRs). With a cutoff frequency
of 50 kHz and better than 90 dB rejection, it can be used as an
antialiasing filter for a 12-bit data acquisition system with
100 kHz throughput.
As shown in Figure 50, the filter is comprised of four FDNRs
(A, B, C, D) having values of 4.9395 × 1015 and 5.9276 × 10–15
farad-seconds. Each FDNR active network provides a two-pole
response for eight poles. The ninth pole consists of a 0.001 μF
capacitor and a 124 kΩ resistor at Pin 3 of Amplifier A2. Figure 51
depicts the circuits for each FDNR with the proper selection of
R. To achieve optimal performance, the 0.001 μF capacitors
must be selected for 1% or better matching and all resistors
should have 1% or better tolerance.
+15V
0.001F
4.99k
0.1F
–15V
1.0k
0.001F
R
+
–
1/2
AD712
+
–
1/2
AD712
R:
24.9k
FOR 4.9395E–15
29.4k
FOR 5.9276E–15
+
0
08
23
-0
51
Figure 51. FDNR for 9-Pole Chebychev Filter
REF 5.0dBm
10dB/DIV
RANGE –5.0dBm
MARKER 96 800.0Hz
–90dBm
START.0Hz
RBW 300Hz
STOP 200 000.0Hz
ST 69.6 SEC
VBW 30Hz
0
08
23-
05
2
Figure 52. High Frequency Response for 9-Pole Chebychev Filter
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD712AQ/+ | 制造商:Analog Devices 功能描述: |
| AD712BA/+ | 制造商:Analog Devices 功能描述: |
| AD712BH | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD712BQ | 制造商:Rochester Electronics LLC 功能描述: |
| AD712CH | 制造商:Analog Devices 功能描述: |
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