●Product Details
●The ADF7021-V is a high performance, low power, narrow-band RF transceiver based on the ADF7021-N. The architecture of the ADF7021-V transceiver is similar to that of the ADF7021-N except that an external VCO is used by the on-chip RF synthesizer for applications that require improved phase noise performance.
●The ADF7021-V is designed to operate in both the license-free ISM bands and in the licensed bands from 80 MHz to 960 MHz.
●To minimize RF feedthrough and spurious emissions, the external VCO operates at 2× or 4× the desired RF frequency; the ADF7021-V supports a maximum VCO frequency operation of 1920 MHz. The 4× VCO operation is programmable by enabling an additional on-chip divide-by-2 outside the RF synthesizer loop and offers improved phase noise performance.
●As with the ADF7021-N receiver, the IF filter bandwidths of 9 kHz, 13.5 kHz, and 18.5 kHz are supported, making the ADF7021-V ideally suited to worldwide narrow-band telemetry applications.
●The part has both Gaussian and raised cosine transmit data filtering options to improve spectral efficiency for narrow-band applications. It is suitable for circuit applications targeted at the following:
● European ETSI EN 300 220
● North American FCC Part 15, Part 90, and Part 95
● Japanese ARIB STD-T67
● Korean short-range device regulations
● Chinese short-range device regulations
●A complete transceiver can be built using a small number of discrete external components, making the ADF7021-V very suitable for area-sensitive, high performance driven applications.
●See data sheet for more information.
●Applications
● Narrow-band, short range device (SRD) standards
● ETSI EN 300 220
● FCC Part 90 (meets
● Emission Mask D requirements)
● FCC Part 95
● ARIB STD-T67
● Wireless Metering
● Narrow-band wireless telemetry
●### Features and Benefits
● High performance, low power, narrow-band transceiver
● Enhanced performance ADF7021-N with external VCO
● Frequency bands using external VCO: 80 MHz to 960 MHz
● Improved adjacent channel power (ACP) and adjacent channel rejection (ACR) compared with the ADF7021-N
● Programmable IF filter bandwidths:
●9 kHz, 13.5 kHz, and 18.5 kHz
● Modulation schemes: 2FSK, 3FSK, 4FSK, MSK
● Spectral shaping: Gaussian and raised cosine filtering
● Data rates: 0.05 kbps to 24 kbps
● Power supply: 2.3 V to 3.6 V
● See data sheet for additional Features
