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PM8850 WiZIRD 522 WiMAX Zero Intermediate Frequency Radio Device
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Features
PRODUCT OVERVIEW
The PM8850 WiZIRD 522 is an ultra-integrated single-chip WiMAX Zero
Intermediate Frequency (ZIF) Radio Device. It is designed for Fixed
and Mobile WiMAX applications and supports both IEEE 802.16-2004
and IEEE 802.16e-2005 standard requirements. The PM8850 WiZIRD
522 has two independent radio paths (2Tx and 2Rx) and supports
operation in the 2.3 - 2.9 GHz or the 3.3 - 3.8 GHz, or the 4.9 - 5.95 Ghz bands.
The PM8850 WiZIRD 522 enables manufacturers of WiMAX Femto BS,
CPE, and MS User Equipment to build low-cost, high-performance, 2x2
MIMO equipment today.
ULTRA-INTEGRATION
Integration of key transmit and receive path components dramatically
reduces the cost of materials and manufacturing, at the same time
improving system reliability.
The PM8850 WiZIRD 522 features:
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Two independent radio paths (2Tx and 2Rx) supporting all Wave 2
MIMO features and enabling the radio path for uplink MIMO
enhancements
- Zero-IF architecture removes the cost associated with external SAW
filters
- Integrated Synthesizer loop filter improve noise immunity and reduce board
space requirements
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- Integrated DAC/ADCs for digital I/Q designs allow Baseband MAC
Processors to scale with Moore's Law without being burdened with
analog circuits
- Integrated transmit baluns, digital temperature monitor, and Rx DC
offset capability
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DESIGN FLEXIBILITY
Design flexibility is essential for equipment manufacturers, allowing
them to react and adapt to changes in market requirements with
minimal changes.
For flexibility, the PM8850 WiZIRD 522 includes:
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Multi-band support for operation in the 2.3 - 2.9 GHz, 3.3 - 3.8 GHz,
or the 4.9 - 5.95 Ghz bands, enabling system designs that are suitable
for use across multiple geographies
- The choice of selecting an analog or digital I/Q interface to an
external Baseband MAC Processor. This lets designers use the best-in-
class Baseband MAC Processor or ASIC available both now and in
the future. The digital I/Q interface is compliant with JEDEC JESD207,
Radio Front End - Baseband Digital Parallel Interface standard.
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Configurable channel bandwidths of 3.5 MHz, 5 MHz, 7 MHz,
8.75 MHz, 10 MHz, 14 MHz, and 20 MHz
- Programmable transmitter gain control for mobile applications
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RELIABLE PERFORMANCE
PMC-Sierra has supplied and supported high performance semiconductor
solutions to the communications industry for over a decade.
The same performance philosophy applies to our WiMAX products.
Transmit Path
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EVM (measured after integrated balun): -36 dB @Pout = 0 dBm
(2.5 GHz), -34 dB @Pout = 0 dBm (3.5 GHz), -32 dB @Pout = 0 dBm (5.5 GHz)
- Tx power control range: 70 dB (1 dB steps)
- -77 dBm/MHz noise floor at 70 MHz offset
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Receive Path
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EVM: -36 dB (2.5 GHz), -34 dB (3.5 GHz), -32 db (5.5 GHz)
- RFIC noise figure: 2.9 dB (2.5 GHz), 3.3 dB (3.5 GHz), 3.7 dB (5.5 GHz)
- Rx gain control: 93 dB range (1.5 dB steps), 106 dB max gain
- Adjacent channel rejection: 26 dB (64 QAM)
- Alternate channel rejection: 34 dB (64 QAM)
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GENERAL DEVICE INFORMATION
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Control interface conforms to industry standard SPI specifications
used by Baseband MAC Processors
- 1.8V ± 5% and 2.5V ± 5% supply voltages
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Industrial temperature range (-40 °C to +85 °C)
- 108-pin Dual Row 0.65 mm pitch Micro Lead Frame (MLF/QFN)
(11 x 11 mm body)
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Applications
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PCMCIA Cards, PC Express Cards, USB Dongles
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Customer Premises Equipment (CPE)
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Femto Base Stations
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Indoor Picostations
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