max2991 Maxim Integrated Products, Inc., max2991 Datasheet - Page 22

• Manufacturer Part Number: max2991
• Description: Power-line Communications Plc Integrated Analog Front-end Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

MATLAB is a registered trademark of The MathWorks, Inc.
Power-Line Communications (PLC) Integrated
Analog Front-End Transceiver
Table 9. Purposed IIR Coefficients for FCC Band
The second example shows the design steps used to
generate the IIR coefficients for the filter in the FCC
band. For this design, a 4th-order elliptic filter is used
with the 483kHz passband frequency. The passband
ripple is 0.5dB and the stopband attenuation is 12dB.
For a 1.2MHz sampling frequency, the coefficients are
shown in Table 9.
The transmitter lowpass filter band is set by TXCONF<7:6>
bits. The aforementioned floating point coefficients were
generated using MATLAB
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time.
22
©
2010 Maxim Integrated Products
COEFFICIENT NAME
IIR0B0
IIR0B1
IIR0B2
IIR0A1
IIR0A2
IIR1B0
IIR1B1
IIR1B2
IIR1A1
IIR1A2
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
M
“fdatool” GUI.
FLOATING POINT VALUE
0.67910441874341
1.27553272646766
0.67910441874341
1.24725754685134
0.54254301592170
0.97169123170169
1.62951057639590
0.97169123170169
1.61392655185432
0.95896648794496
Maxim is a registered trademark of Maxim Integrated Products, Inc.
PROCESS: CMOS
For the latest package outline information and land patterns,
go to www.maxim-ic.com/packages. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package
drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE TYPE
Q13 FORMAT VALUE
48 LQFP
10449
10218
13349
13221
5563
5563
4445
7960
7960
7856
PACKAGE CODE
Package Information
C48+2
Chip Information
REGISTER VALUE
0x15BB
0x15BB
0x28D1
0x27EA
0x115D
0x33A5
0x1EB0
0x1F18
0x3425
0x1F18
DOCUMENT NO.
21-0054