Analog Devices Introduces Transciever, Transmitter ICs For Low-Rate Wireless Connectivity Markets

New low-power, single-chip RF ICs enable affordable wireless connectivity.

Fort Worth, TX -- MTT-S 2004 -- Responding to the fast-growing demand for low-rate wireless connectivity solutions, Analog Devices today announced three new RFICs that offer a complete, low-power radio system solution on a single chip, which simplifies the design and reduces bill of material cost for customers. The new transceiver ICs and transmitter IC complement Analog Devices' existing family of ISM band transmitters (ADF7010, ADF7011) for low-rate wireless connectivity applications. These new RF ICs will be displayed in the Analog Devices' booth #847.

The ADF7012 is a (VHF/UHF) transmitter IC with 50 MHz to 1 GHz frequency operation allowing multiple frequency plans to be implemented for transmit applications such as RF remote controls, remote keyless entry and wireless sensor applications. The ADF7020 & ADF7025 are ISM band transceiver ICs, which operate at bands from 433 to 928 MHz, implement complete transceiver solutions with few external components and are suited to wireless video & audio for alarm, sensor, and security systems, automatic meter reading, and remote transducer applications.

"Analog Devices has once again drawn upon its RF integration expertise to build these single chip solutions that make creating wireless links very affordable," said Christian Kermarrec, VP, RF and wireless systems, Analog Devices, Inc.

About the ADF7012
The ADF7012 is a single-chip, low-power UHF transmitter with 50 MHz to 1 GHz frequency operation and a Fractional-N PLL (phased locked loop) at the core. It operates at 2.3 to 3.3 volts with very low current consumption. An onboard voltage regulator provides stable performance. The output power is programmable in steps of -16 dBm to +14 dBm, with 0.4 dB steps. Data rates supported are up to 150 kbits/s. Current consumption is 10 mA at 315 MHz (0 dBm).

About the ADF7020
The ADF7020 is a low power, low-IF transceiver operating in frequency bands from 433 to 464 MHz and 868 to 928 MHz. Data rates supported are 0.3 to 200 kbits/s, FSK of 0.3 to 64 kbits/s, and ASK. It operates on a +2.3 V to +3.6 V power supply with programmable output power from -16 to +13 dBm in 0.3 dBm steps. Its receiver sensitivity is -117.5dBm at 1 kbits/s FSK, -110.5 dBm at 9.6 kbits/s FSK, and -106.5 dBm at 9.6 kbits/s ASK. Current consumption is 19 mA in receive mode and 22 mA in transmit mode (+10 dBm output). Other features include on-chip VCO, Fractional-N PLL, on-chip 7-bit analog-to-digital converter, digital received signal strength indication (RSSI), temperature sensor and a +/-1 ppm RF output frequency accuracy made possible by its low-cost 100ppm crystal. Its leakage current is less than 1uA in power down mode.

About the ADF7025
The ADF7025 is a low power, zero-IF RF transceiver operating in frequency bands of 433 MHz to 464 MHz and 862 MHz to 928 MHz. The ADF7025 is a highly integrated FSK/GFSK (Gaussian frequency shift keying) transceiver designed for compliance with FCC 15.247 specifications. A complete time division duplex (TDD) or full duplex RF link can be built with a small number of external components making the ADF7025 very suitable for price- and area-sensitive applications. Combined with the ADF7012 and ADF4106 a complete RF front-end for hybrid 5.8/0.9 GHz digital cordless phones can be implemented.

Source: Analog Devices, Inc.