Silicon Laboratories' highly integrated FM transmitter family offers superior audio performance in a 3 mm × 3 mm × 0.55 mm 20-pin QFN package. By reducing the bill of materials and power consumption of existing solutions, the Si471x FM transmitter family allows customers to cost effectively add wireless FM audio playback capability to any portable media device.

The Si471x FM transmitter family leverages Silicon Laboratories' digital architecture to provide integration and high-quality sound fidelity. This innovative architecture improves the stability of volume output on the receiving system and through unique audio dynamic range control, increases delivered audio fidelity of the transmitting system. The Si4711 FM transmitter supports Radio Data Service (RDS) and Radio Broadcast Data Service (RBDS), enabling the display of the artist and song title on an RDS/RBDS-enabled FM receiver.

The Si471x FM transmitter family offers customers a fully tested solution that speeds time to market and simplifies manufacturing. It requires only two external components and is implemented in 15 mm² of PC board area. Programmable power scaling allows customers to comply with the Federal Communications Commission and pending European Union transmitted power regulations with a single implementation.

The FM transmitter function easily co-exists with active cellular networks as well as GPS, WLAN, Bluetooth and other wireless transmitters, due to integrated on-chip filtering, reducing noise and harmonics.

The Si4710 is sampling to lead customers. Pricing for the Si4710 begins at $3.91 in quantities of 10,000. Pricing for the Si4711, which samples in January 2007 and supports RDS/RBDS transmission, begins at $4.69 in quantities of 10,000. A Si4710 evaluation board is available for $250.
Silicon Laboratories
(877) 444 3032
www.silabs.com

Endwave Defense Systems' X-band synthesizer meets the rigid requirements of Satcom environments. This high-performance synthesizer operates over the X-band Satcom range of 6.410 GHz to 7.545 GHz and can be customized to meet step size requirements from 1 KHz down to 1 Hz. It features outstanding spectral purity and low phase noise of -77 dBc at 100 Hz offsets and -125 dBc at 1 MHz offsets.

The X-band synthesizer is ideal for harsh-environment defense applications where a combination of low noise, wide bandwidth, and very small step size are essential. The base model is based on Endwave's proprietary YIG oscillators. Applications include field- portable X-band Satcom terminals, control links for unmanned aerial vehicles (UAVs), and tri-band converters. Other S-, C-, Ku-, Ka- and tri-band synthesizers are available in both YIG and VCO-based designs.
Endwave Defense Systems
(408) 522-3181
www.endwave.com

Analog Devices offers the AD9352 and AD9353 — a family of high-performance, highly integrated CMOS, direct-conversion transceivers covering all the WiMAX profiles in the 2.x GHz, 3.x GHz, and 5.x GHz frequency bands. The high level of integration on the transceiver enables the reduction of the system bill of materials for the radio as well as reduced digital modem cost. The ADI/Q interface integrated on the transceiver, allows the digital modem solutions to be manufactured on a fine line process such as 65 nm or 45 nm, taking advantage of the lower cost per transistor. The ADI/Q bidirectional interface is a simple parallel CMOS digital I/O interface between the transceiver and the digital modem. The interface has been adopted by multiple digital modem partners.

The AD9352/AD9353 family of WiMAX transceivers offers a complete RF and mixed-signal system on a chip. The transceiver integrates a high-sensitivity direct-conversion receiver, and channel-select filtering at baseband, thus eliminating the need for external SAW filters. The highly linear transmitter offers excellent EVM and spurious performance. A low phase noise LO path is achieved by an integrated fractional-N synthesizer. To enable low system cost, an on-chip crystal oscillator replaces the expensive external voltage-controlled temperature-compensated crystal oscillator (VCTCXO) with a 40 MHz crystal.

These transceivers integrate smart system features such as self-calibration, automatic gain control, transmit power control, support for automatic frequency control, and auxiliary ADCs and DACs for system monitoring, reducing the level of real-time signaling between the modem and transceiver, simplifying the RF driver development and support.
Analog Devices
(800) 262-5643
www.analog.com

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