cx24132 Conexant Systems, Inc., cx24132 Datasheet

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cx24132

Manufacturer Part Number
cx24132
Description
Dual Low-power 8psk Digital Satellite Tuner
Manufacturer
Conexant Systems, Inc.
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
cx24132-12Z
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Company:
Part Number:
cx24132-12Z
Quantity:
4 000
Set-top Box Solutions
Satellite
Dual Low-power 8PSK Digital
Satellite Tuner
CX24132
Conexant’s portfolio includes a comprehensive suite of semiconductor
solutions for broadband communications and the digital home.
The CX24132 is Conexant’s second-generation dual 8PSK tuner with improved
This unique stand-alone dual tuner’s small size (7 mm x 7 mm) allows system
The CX24132 offers improved spurious-free dynamic range compared to
The device also meets other performance requirements that are necessary
The CX24132 includes many features that simplify the design or improve
The CX24132 uses a small 7 mm x 7 mm 48-pin lead-free Quad Flat-No Lead
complete dual-tuner solution includes all necessary Low Noise Amplifiers
(LNAs), Voltage-Controlled Oscillators (VCOs), synthesizers, mixers, and filters
(typically 160 Hz).
designers to significantly reduce the PCB size of dual front-ends, especially
At 1 W typical with both channels active, the CX24132 (along with other
Conexant tuners) offers the lowest per-channel power of any standards
compliant 8PSK tuner. In addition, the CX24132 is powered by a single 3.3
V power supply, allowing a low-power, simple, cost-effective power supply
design.
2-layer PCB designs, while providing added margin to 4-layer PCB designs.
section.
detectors have been added to allow estimation of composite input power for
optimal gain distribution. In more complex designs, the power detectors can
drive external PIN diode attenuators.
In addition to the Bill of Material (BOM) savings that its high level of
other features that lower system BOM cost. In particular, both tuners are
clocked from the same crystal and a buffered version of this clock is made
In addition, the RF inputs can be operated single-ended, eliminating the need
(QFN) package. Multiple reference designs that include this IC and various
Conexant dual demodulators are available.
performance and added features. It is designed with a SiGe BiCMOS process
to provide the excellent performance that is required by demanding 8PSK
applications, while maintaining low power consumption. This highly-integrated
required for common applications. The device employs fractional synthesizers
that provide excellent phase noise while maintaining a very small step size
when used with Conexant’s dual DVB-S2 or 8PSK Turbo demodulators.
previous generation dual tuners. This allows compatibility with low-cost
in demanding 8PSK applications, as listed in the “Distinguishing Features”
performance. To improve performance, integrated wideband RF power
be used in conjunction with high current General Purpose Outputs (GPOs) to
integration and single 3.3V supply provides, the CX24132 incorporates several
available to drive companion ICs, such as Conexant demodulators and tuners.
for baluns in most applications.
Distinguishing Features
Part Number CX24132
Description
• Complete dual 8PSK tuner
• Integrated LNA
• Low power (1 W typical)
• Single 3.3 V power supply
• Superior phase noise (0.36 deg RMS DSB)
• Outstanding noise figure (10 dB typical)
• Exceptional linearity (9 dBm IIP3)
• Excellent spurious-free dynamic range
• 65 dB isolation between channels
• Buffered clock output
• Single-ended RF inputs
• Built in auto-tuning machine
• High current GPOs
• Wideband RF power detectors
Dual Low-power 8PSK
Digital Satellite Tuner

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cx24132 Summary of contents

Page 1

... ICs, such as Conexant demodulators and tuners. In addition, the RF inputs can be operated single-ended, eliminating the need for baluns in most applications. The CX24132 uses a small 48-pin lead-free Quad Flat-No Lead (QFN) package. Multiple reference designs that include this IC and various Conexant dual demodulators are available. ...

Page 2

... VGA Gain States 90 o I/Q DC Offset Cancellation CX24132 Functional Block Diagram Product Specifications • Supports 8PSK and QPSK modulation formats • Supported symbol rates: 1-45 MSps • RF input frequency: 925 to 2175 MHz • Dynamic range: -23 to -69 dBm • Small , lead-free 48-pin QFN package www ...

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