Overview
The ADF7021BCPZ is a high-performance narrow-band transceiver IC designed by Analog Devices Inc. This device is optimized for operation in the narrow-band, license-free ISM bands and complies with various regulatory standards including European ETSI EN 300 220, Japanese ARIB STD-T67, Chinese short range device regulations, and North American FCC Part 15, Part 90, and Part 95. It is particularly suited for applications requiring low power consumption, small footprint, and high spectral efficiency.
The transceiver supports multiple modulation schemes such as 2FSK, 3FSK, and 4FSK, allowing for dynamic switching to maximize communication range and data throughput. It features dual voltage-controlled oscillators (VCOs) and a low noise fractional-N PLL, enabling dual-band operation and frequency hopping spread spectrum (FHSS) systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Frequency Range | 80 MHz | - | 950 MHz | - | Dual VCOs: 80 MHz to 650 MHz (external inductor), 431 MHz to 475 MHz and 862 MHz to 950 MHz (internal LC tank) |
| Supply Voltage (VDD) | 2.3 V | - | 3.6 V | V | - |
| Operating Temperature | -40°C | - | +85°C | °C | - |
| Package Type | - | - | - | - | 48-Lead Frame Chip Scale Package (LFCSP-WQ) |
| Data Rate | 0.05 kbps | - | 32.82 kbps | kbps | 2FSK, 3FSK, 4FSK; IF_BW = 25 kHz |
| Transmit Power | -16 dBm | - | +13 dBm | dBm | Programmable in 63 steps |
| Receiver Sensitivity | -130 dBm | - | -113 dBm | dBm | Dependent on data rate and modulation scheme |
| Phase Noise | -124 dBc/Hz | - | - | dBc/Hz | 1 MHz offset, fRF = 433 MHz, PA = 10 dBm, VDD = 3.0 V, PFD = 19.68 MHz |
Key Features
- Dual VCOs and Fractional-N PLL: Enables dual-band operation and frequency hopping spread spectrum (FHSS) systems.
- Modulation Schemes: Supports 2FSK, 3FSK, and 4FSK modulation, with dynamic switching capabilities.
- Spectral Shaping: Gaussian and raised cosine filtering options to improve spectral efficiency.
- Automatic PA Ramp Control: Prevents spectral splatter and helps meet regulatory standards.
- On-Chip ADC and Temperature Sensor: 7-bit ADC for reading temperature, external analog input, battery voltage, and RSSI signal.
- Fully Automatic Frequency Control (AFC) Loop: With programmable pull-in range to track frequency errors in incoming signals.
- Integrated Tx/Rx Switch and Digital RSSI: Simplifies system design and improves performance.
- Low Power Consumption: Operates with low power and has a power-down mode with 0.1 A leakage current.
Applications
- Narrow-Band Standards: Compliant with ETSI EN 300 220, FCC Part 15, FCC Part 90, FCC Part 95, and ARIB STD-T67.
- Wireless Data Transfer: Suitable for low-cost wireless data transfer applications.
- Remote Control/Security Systems: Ideal for remote control and security systems due to its low power and small footprint.
- Wireless Metering: Used in wireless metering applications for efficient data communication.
- Private Mobile Radio and Wireless Medical Telemetry Service (WMTS): Supports private mobile radio and WMTS applications.
- Home Automation and Process Control: Suitable for home automation, process control, and building control systems.
- Pagers and Keyless Entry Systems: Used in pager systems and keyless entry applications.
Q & A
- What is the frequency range of the ADF7021BCPZ?
The ADF7021BCPZ operates in the frequency range of 80 MHz to 950 MHz, using dual VCOs for different frequency bands.
- What modulation schemes does the ADF7021BCPZ support?
The device supports 2FSK, 3FSK, and 4FSK modulation schemes, with the ability to dynamically switch between them.
- What is the power supply range for the ADF7021BCPZ?
The device operates with a power supply range of 2.3 V to 3.6 V.
- What is the maximum transmit power of the ADF7021BCPZ?
The maximum transmit power is +13 dBm, programmable in 63 steps.
- Does the ADF7021BCPZ have an on-chip temperature sensor?
Yes, it includes a 7-bit ADC and an on-chip temperature sensor accurate to ±10°C over the full operating temperature range).
- What is the receiver sensitivity of the ADF7021BCPZ?
The receiver sensitivity varies depending on the data rate and modulation scheme, ranging from -130 dBm to -113 dBm).
- Does the ADF7021BCPZ support automatic frequency control?
Yes, it features a fully automatic frequency control (AFC) loop with a programmable pull-in range).
- What is the phase noise performance of the ADF7021BCPZ?
The phase noise is -124 dBc/Hz at 1 MHz offset, fRF = 433 MHz, PA = 10 dBm, VDD = 3.0 V, and PFD = 19.68 MHz).
- What is the package type of the ADF7021BCPZ?
The device is packaged in a 48-Lead Frame Chip Scale Package (LFCSP-WQ)).
- What are some typical applications of the ADF7021BCPZ?
Typical applications include narrow-band standards, wireless data transfer, remote control/security systems, wireless metering, private mobile radio, and wireless medical telemetry service (WMTS)).
