(毕业论文)基于TI器件的带通滤波器的设计.pdf

Collin Wells, Ting Ye
TI Precision Designs: Verified Design
Band-Pass Filtered, Inverting -40 dB Attenuator,
10 Hz – 100 kHz, dB Error

TI Precision Designs Circuit Description
TI Precision Designs are analog solutions created by An attenuator circuit is required when the magnitude
TI’s analog experts. Verified Designs offer the theory, of an input signal needs to be reduced. This version
component selection, simulation, complete PCB of an inverting attenuator features an easily tunable
schematic & layout, bill of materials, and measured band-pass filter that is useful to limit noise and also
performance of useful circuits. Circuit modifications allows for independent control of the dc output level.
that help to meet alternate design goals are also The circuit can be used in a variety of applications
discussed. from low-level signal generation to large input signal
attenuation.
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C1
R1 R2
C2
VIN
R4
VOUT
+
C
+ 9
VCM
–



An IMPORTANT NOTICE at the end of this TI reference design addresses authorized use, intellectual property matters and
other important disclaimers and information.
TINA-TI is a trademark of Texas Instruments
WEBENCH is a registered trademark of Texas Instruments
SLAU518-June 2013-Revised June 2013 Error, -40dB Band-Pass Filtered Attenuator 1
Copyright © 2013, Texas Instruments Incorporated

1 Design Summary
The design requirements are as follows:
 Supply Voltage: +/-15 V
 Input: 100 mVpp to 50 Vpp
 Output: -40 dB
The design goals and performance are summarized in Table 1. Figure 1 depicts the ac transfer function of
the design measured from 1 Hz to 10 MHz.
Table 1. Comparison of Design Goals, Simulated, and Measured Performance
Goals Simulated Measur