GENERAL DESCRIPTION

The ADF7020-1 is a low power, highly integrated FSK/GFSK/ASK/OOK/GOOK transceiver designed for operation in the low UHF and VHF bands. The ADF7020-1 uses an external VCO inductor that allows users to set the operating frequency anywhere between 135 MHz and 650 MHz.

FEATURES

Low power, low IF transceiver

Frequency bands

  135 MHz to 650 MHz, direct output

  80 MHz to 325 MHz, divide-by-2 mode

Data rates supported

  0.15 kbps to 200 kbps, FSK

  0.15 kbps to 64 kbps, ASK

  2.3 V to 3.6 V power supply

Programmable output power

  −20 dBm to +13 dBm in 63 steps

Receiver sensitivity

  −119 dBm at 1 kbps, FSK, 315 MHz

  −114 dBm at 9.6 kbps, FSK, 315 MHz

  −111.8 dBm at 9.6 kbps, ASK, 315 MHz

Low power consumption

  17.6 mA in receive mode

  21 mA in transmit mode (10 dBm output)

On-chip VCO and fractional-N PLL

On-chip 7-bit ADC and temperature sensor

Fully automatic frequency control loop (AFC) compensat for lower tolerance crystals

Digital RSSI

Integrated TRx switch

Leakage current <1 μA in power-down mode

APPLICATIONS

Low cost wireless data transfer

Wireless medical applications

Remote control/security systems

Wireless metering

Keyless entry

Home automation

Process and building control