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PM8870 WiZIRD 722 WiMAX Zero Intermediate Frequency Radio Device
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Features
PRODUCT OVERVIEW
The PM8870 WiZIRD 722 is an ultra-integrated tri-band 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. It has two independent
radio paths (2Tx and 2Rx) and supports operation in the 450 - 928 MHz,
2.3 - 2.9 GHz, or 3.3 - 3.8 GHz licensed bands.
The PM8870 WiZIRD 722 enables manufacturers of network interface cards,
hand-held devices, CPE, low-cost PICO, and Femto BS to build low-cost,
high-performance, 2x2 MIMO equipment.
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 PM8870 WiZIRD 722 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 DCXO supports AFC with no additional components, except for
low-cost 26 MHz or 40 MHz crystal
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- Integrated synthesizer loop filter improves noise immunity and
reduces board space requirements
- Standard analog I/Q Interface
- Integrated Rx DC offset compensation, digital temperature monitor, and transmit
baluns for 2.5 GHz and 3.5 GHz bands
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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 PM8870 WiZIRD 722 includes:
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Multi-band support for operation in the 450 - 928 MHz, 2.3 - 2.9 GHz
or 3.3 - 3.8 GHz licensed bands, enabling system designs that are suitable
for use across multiple geographies and roaming applications
- HFDD and TDD support for OFDM based broadband wireless technology and
compatibility with different worldwide channel assignments.
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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 for 2.5 GHz, 3.5 GHz):
-36 dB @Pout = 0 dBm (700 MHz), -36 dB @Pout = 0 dBm (2.5 GHz),
-34 dB @Pout = 0 dBm (3.5 GHz)
- Tx power control range: 70 dB (1 dB steps)
- -77 dBm/MHz noise floor @ 70 MHz offset for 450 - 928 MHz,
2.5 GHz and 3.5 GHz licensed bands
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Receive Path
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EVM: -36 dB (700 MHz), -36 dB (2.5 GHz), -34 dB (3.5 GHz)
- RFIC noise figure: 3.0 dB (700 MHz), 2.9 dB (2.5 GHz), 3.3 dB (3.5 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)
- 84-pin Single Row 0.4 mm pitch tsCSP Package
- 9 x 9 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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