Overview
The ADF7021BCPZ-RL7, produced by Analog Devices Inc., is a high-performance, low-power, highly integrated 2FSK/3FSK/4FSK transceiver. This device is designed to operate in the narrow-band, license-free ISM bands and is suitable for a variety of applications requiring high spectral efficiency and flexibility in modulation schemes. The ADF7021 features a dual voltage-controlled oscillator (VCO) design, allowing for dual-band operation and supporting frequency hopping spread spectrum (FHSS) systems. It is optimized for use in applications that require compliance 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.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Temperature | −40°C | +85°C | |||
| Supply Voltage | 2.3 V | 3.6 V | |||
| Data Rate (2FSK, 3FSK) | 0.05 kbps | 251 kbps | IF_BW = 25 kHz | ||
| Data Rate (4FSK) | 0.05 kbps | 32.82 kbps | IF_BW = 25 kHz | ||
| Frequency Deviation (fDEV) | 0.056 kHz | 156 kHz | PFD = 3.625 MHz to 20 MHz | ||
| Transmit Power | −16 dBm | +13 dBm | VDD = 3.0 V, TA = 25°C | ||
| IF Filter Bandwidth | 12.5 kHz | 25 kHz | Programmable | ||
| Package Type | 48-Lead Lead Frame Chip Scale Package (LFCSP_WQ) |
Key Features
- Dual VCO design supporting dual-band operation and frequency hopping spread spectrum (FHSS) systems.
- Support for 2FSK, 3FSK, and 4FSK modulation schemes with programmable data rates.
- Gaussian and raised cosine transmit data filtering options to improve spectral efficiency.
- Programmable transmit power in 63 steps from −16 dBm to +13 dBm with automatic power ramp control.
- Low IF architecture with programmable IF filter bandwidths to minimize power consumption and external component count.
- Automatic frequency control (AFC) loop with programmable pull-in range and image rejection performance of 56 dB.
- On-chip ADC for temperature sensor, external analog input, battery voltage, and RSSI signal readback.
- Operates with a simple 3-wire interface for RF frequency and modulation programming.
Applications
The ADF7021BCPZ-RL7 is suitable for various applications, including:
- Narrow-band, license-free ISM band communications.
- Wireless sensor networks.
- Industrial control and automation.
- Remote meter reading and smart grid applications.
- Medical devices and telehealth equipment.
- Consumer electronics requiring low-power wireless communication.
Q & A
- What is the operating temperature range of the ADF7021BCPZ-RL7?
The operating temperature range is from −40°C to +85°C. - What are the supported modulation schemes?
The device supports 2FSK, 3FSK, and 4FSK modulation schemes. - What is the range of programmable transmit power?
The transmit power is programmable in 63 steps from −16 dBm to +13 dBm. - What types of filtering options are available for transmit data?
The device offers Gaussian and raised cosine transmit data filtering options. - What is the purpose of the dual VCO design?
The dual VCO design allows for dual-band operation and supports frequency hopping spread spectrum (FHSS) systems. - How does the device minimize power consumption?
The device uses a low IF architecture and has programmable IF filter bandwidths to minimize power consumption and external component count. - What is the image rejection performance of the receiver?
The receiver achieves an image rejection performance of 56 dB using a patent-pending IR calibration scheme. - What additional features does the on-chip ADC provide?
The on-chip ADC provides readback of the integrated temperature sensor, external analog input, battery voltage, and RSSI signal. - What regulatory standards does the ADF7021BCPZ-RL7 comply with?
The device complies with 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. - How is the RF frequency and modulation programmed?
The RF frequency and modulation are programmable using a simple 3-wire interface.
