ADF7020-1: High Performance, ISM Band, FSK/ASK Transceiver IC
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 which allows you to set the operating frequency anywhere between 135MHz and 650MHz. 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 0.3 dB steps from −16 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 against current consumption, depending on the application. The receiver also features a patent-pending automatic frequency control (AFC) loop, allowing the PLL to track out the 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.
ADF7020-1 特点
- Low power, low IF transceiver
- Frequency bands: 135 MHz to 650 MHz
- Data rates supported:
FSK: 0.15 kbps to 200 kbps
ASK:0.15 kbps to 64 kbps - 2.3 V to 3.6 V power supply
- Receiver sensitivity
-119 dBm at 1 kbps, FSK
-112 dBm at 9.6 kbps, FSK
-106.5 dBm at 9.6 kbps, ASK - Programmable output power: -16 dBm to +13 dBm in 0.3 dBm steps
- On-chip VCO and fractional-N PLL
- Low power consumption
18 mA in receive mode
27 mA in transmit mode (10 dBm output) - On-chip 7-bit ADC and temperature sensor
- Fully automatic frequency control loop (AFC) compensates for lower tolerance crystals
- Digital RSSI
- Integrated TRx switch
ADF7020-1 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| ADF7020-1BCPZ | 量产 | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
| ADF7020-1BCPZ-RL | 量产 | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
| ADF7020-1BCPZ-RL7 | 量产 | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
| EVAL-ADF7020-1DBZ4 | 量产 | 评估板 | - | 工业 |
| EVAL-ADF7020-1DBZ5 | 量产 | 评估板 | - | 工业 |
| EVAL-ADF7020-1DBZ6 | 量产 | 评估板 | - | 工业 |
| EVAL-ADF7020-1DBZ7 | 量产 | 评估板 | - | 工业 |
| EVAL-ADF7020-1DBZ8 | 量产 | 评估板 | - | 工业 |