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OPA2652UG4 参数 Datasheet PDF下载

OPA2652UG4图片预览
型号: OPA2652UG4
PDF下载: 下载PDF文件 查看货源
内容描述: 双通道, 700MHz的,电压反馈运算放大器 [Dual, 700MHz, Voltage-Feedback OPERATIONAL AMPLIFIER]
分类和应用: 运算放大器光电二极管
文件页数/大小: 20 页 / 508 K
品牌: BB [ BURR-BROWN CORPORATION ]
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OPA2652  
www.ti.com  
SBOS125AJUNE 2000REVISED MAY 2006  
Differential ADC Driver  
0
-5  
The circuit on the front page shows an OPA2652  
driving the ADS807 analog-to-digital converter (ADC)  
differentially, at a gain of +2V/V. The outputs are  
AC-coupled to the converter to adjust for the  
difference in supply voltages. The 133resistors at  
the noninverting inputs minimize DC offset errors.  
The differential topology minimizes even-order  
distortion products, such as second-harmonic  
distortion.  
-10  
-15  
-20  
-25  
-30  
-35  
-40  
Bandpass Filter  
10k  
100k  
1M  
10M  
100M  
Figure 31 shows a single OPA2652 implementing a  
sixth-order bandpass filter. This filter cascades two  
second-order Sallen-Key sections with transmission  
zeros, and a double real pole section. It has 0.3dB of  
ripple, –3dB frequencies of 450kHz and 11MHz, and  
–23dB frequencies of 315kHz and 16MHz. The  
20.0resistor isolates the first OPA2652 output from  
capacitive loading. This configuration improves  
stability with minimal impact on the filter response.  
Figure 30 shows the nominal response simulated by  
SPICE.  
Frequency (Hz)  
Figure 30. Nominal Filter Response  
2.2nF  
1% Resistors  
5% Capacitors  
+5V  
140W  
2.10kW  
1/2  
OPA2652  
VIN  
1.30kW  
1.0nF  
1.0nF  
-5V  
24.9W  
143W  
180pF  
+5V  
225W  
158W  
2.7nF  
200W  
1/2  
OPA2652  
VOUT  
18pF  
12pF  
150pF  
20.0W  
100W  
100pF  
-5V  
24.9W  
107W  
Figure 31. Bandpass Filter  
11  
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