ADF7020-1BCPZ Integrated Circuit Chip High Performance FSK/ASK Transceiver IC
electronic integrated circuit
,digital integrated circuits
High Performance FSK/ASK Transceiver IC ADF7020-1
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) compensates 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
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. Using the divideby-2 circuit allows users to operate the device as low as 80 MHz. The typical range of the VCO is about 10% of the operating frequency. A complete transceiver can be built using a small number of external discrete components, making the ADF7020- 1 very suitable for price-sensitive and area-sensitive applications.
The transmit section contains a VCO and low noise fractional-N PLL with output resolution of <1 ppm. This frequency agile PLL allows the ADF7020-1 to be used in frequency-hopping spread spectrum (FHSS) systems. The VCO operates at twice the fundamental frequency to reduce spurious emissions and frequency pulling problems.
The transmitter output power is programmable in 63 steps from −20 dBm to +13 dBm. The transceiver RF frequency, channel spacing, and modulation are programmable using a simple 3- wire interface. The device operates with a power supply range of 2.3 V to 3.6 V and can be powered down when not in use.
A low IF architecture is used in the receiver (200 kHz), minimizing power consumption and the external component count and avoiding interference problems at low frequencies. The ADF7020-1 supports a wide variety of programmable features, including Rx linearity, sensitivity, and IF bandwidth, allowing the user to trade off receiver sensitivity and selectivity for current consumption, depending on the application. The receiver also features a patent-pending automatic frequency control (AFC) loop, allowing the PLL to compensate for frequency error in the incoming signal.
An on-chip ADC provides readback of an integrated temperature sensor, an external analog input, the battery voltage, or the RSSI signal, which provides savings on an ADC in some applications. The temperature sensor is accurate to ±10°C over the full operating temperature range of −40°C to +85°C. This accuracy can be improved by doing a 1-point calibration at room temperature and storing the result in memory.
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Parameter Rating |
VDD to GND1 −0.3 V to +5 V Analog I/O Voltage to GND −0.3 V to AVDD + 0.3 V Digital I/O Voltage to GND −0.3 V to DVDD + 0.3 V Operating Temperature Range Industrial (B Version) −40°C to +85°C Storage Temperature Range −65°C to +125°C Maximum Junction Temperature 150°C MLF θJA Thermal Impedance 26°C/W Reflow Soldering Peak Temperature 260°C Time at Peak Temperature 40 sec |
1 GND = CPGND = RFGND = DGND = AGND = 0 V.
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
This device is a high performance RF-integrated circuit with an ESD rating of <2 kV. It is ESD sensitive; proper precautions should be taken for handling and assembly.
FUNCTIONAL BLOCK DIAGRAM
0402 0.063W 10kOhm SMT Thick Film Chip Resistor RC0402JR-0710KL
200MHz MPZ1608S300ATAH0 Chip Beads 5A For Power Line TDK SMD0603
22R 5% SMD0402 Film Chip Resistors ERJ-2GEJ220X PANASONIC
MOV-20D751K 750V 6.5kA Varistor blue SMD Chip Resistor 1 Circuit Through Hole Disc 20mm
2SB1261-TP 10W General Purpose Rectifier Diode Silicon Epitaxial Planar Pnp Transistor
IXFK140N30P Polar Power Mosfet Hiperfet TO264 300V 140A
DF2B29FU,H3F TVS 24VWM 47V ESD Protection Diodes
PMEG6010ER 1A Low VF MEGA Schottky Barrier Rectifier SOD123
SK34SMA 3A SMD Schottky Barrier Rectifier Diodes DO - 214AC
SMBJ5.0A Silicon Avalanche Diodes 600W Surface Mount TVS Diodes
Image | Part # | Description | |
---|---|---|---|
0402 0.063W 10kOhm SMT Thick Film Chip Resistor RC0402JR-0710KL |
10 kOhms ±5% 0.063W, 1/16W Chip Resistor 0402 (1005 Metric) Moisture Resistant Thick Film
|
||
200MHz MPZ1608S300ATAH0 Chip Beads 5A For Power Line TDK SMD0603 |
30 Ohms 1 Power Line Ferrite Bead 0603 (1608 Metric) 5A 10mOhm
|
||
22R 5% SMD0402 Film Chip Resistors ERJ-2GEJ220X PANASONIC |
22 Ohms ±5% 0.1W, 1/10W Chip Resistor 0402 (1005 Metric) Automotive AEC-Q200 Thick Film
|
||
MOV-20D751K 750V 6.5kA Varistor blue SMD Chip Resistor 1 Circuit Through Hole Disc 20mm |
750 V 6.5 kA Varistor 1 Circuit Through Hole Disc 20mm
|
||
2SB1261-TP 10W General Purpose Rectifier Diode Silicon Epitaxial Planar Pnp Transistor |
Bipolar (BJT) Transistor PNP 60 V 3 A 50MHz 1 W Surface Mount D-Pak
|
||
IXFK140N30P Polar Power Mosfet Hiperfet TO264 300V 140A |
N-Channel 300 V 140A (Tc) 1040W (Tc) Through Hole TO-264AA (IXFK)
|
||
DF2B29FU,H3F TVS 24VWM 47V ESD Protection Diodes |
47V Clamp 3A (8/20µs) Ipp Tvs Diode Surface Mount USC
|
||
PMEG6010ER 1A Low VF MEGA Schottky Barrier Rectifier SOD123 |
Diode 60 V 1A Surface Mount SOD-123W
|
||
SK34SMA 3A SMD Schottky Barrier Rectifier Diodes DO - 214AC |
Diode 40 V 3A Surface Mount DO-214AC, SMA
|
||
SMBJ5.0A Silicon Avalanche Diodes 600W Surface Mount TVS Diodes |
9.2V Clamp 65.3A Ipp Tvs Diode Surface Mount DO-214AA (SMBJ)
|