clc522 National Semiconductor Corporation, clc522 Datasheet - Page 11

• Manufacturer Part Number: clc522
• Description: Wideband Variable-gain Amplifier
• Manufacturer: National Semiconductor Corporation

Application Division
Frequency Shaping
Frequency shaping the bandwidth extension of the CLC522
can be accomplished using parallel networks connected
across the R
schematic will effectively extend the CLC522’s bandwidth.
g
ports. The network shown in the Figure 9
(Continued)
11
2nd Order Tuneable Bandpass Filter
The CLC522 Variable-Gain Amplifier placed into feedback
loops provide signal processing functions such as 2nd order
tuneable bandpass filters. The center frequency of the 2nd
order bandpass illustrated on the front page is adjusted
through the use of the CLC522’s gain-control voltage, V
The integrators implemented with two CLC420s, provide the
coefficients for the transfer function.
FIGURE 9.
DS012718-42
www.national.com
g
.