Overview
The ADF7021-NBCPZ-RL is a high-performance, low-power, narrow-band transceiver IC produced by Analog Devices Inc. This device is designed to operate in the narrow-band, license-free ISM bands and in licensed bands, covering frequency ranges from 80 MHz to 650 MHz and 842 MHz to 916 MHz. It is particularly suited for applications requiring 12.5 kHz channel separation, such as those adhering to Japanese ARIB STD-T67, European ETSI EN 300 220, Korean, Chinese, and North American FCC Part 15, Part 90, and Part 95 regulatory standards. The ADF7021-N offers flexible modulation schemes, including 2FSK, 3FSK, 4FSK, and MSK, along with Gaussian and raised cosine spectral shaping to enhance spectral efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Frequency Range | 80 MHz to 650 MHz, 842 MHz to 916 MHz | Hz |
| Operating Temperature | -40°C to +85°C | °C |
| Supply Voltage | 2.3 V to 3.6 V | V |
| Transmit Current | 13.8 mA to 27.1 mA | mA |
| Receive Current | 16.3 mA to 21.7 mA | mA |
| Output Power | -16 dBm to +13 dBm (in 63 steps) | dBm |
| Data Rate | 0.05 kbps to 24 kbps | kbps |
| Receiver Sensitivity | -130 dBm at 100 bps, 2FSK; -122 dBm at 1 kbps, 2FSK | dBm |
| Modulation Schemes | 2FSK, 3FSK, 4FSK, MSK | |
| IF Filter Bandwidths | 9 kHz, 13.5 kHz, 18.5 kHz | kHz |
| Package Type | 48-Lead Lead Frame Chip Scale Package (LFCSP) |
Key Features
- Dual VCO design for dual-band operation, allowing transmission and reception at frequencies supported by both internal and external inductor VCOs.
- Programmable IF filter bandwidths of 9 kHz, 13.5 kHz, and 18.5 kHz.
- Support for multiple modulation schemes: 2FSK, 3FSK, 4FSK, MSK, and spectral shaping using Gaussian and raised cosine filtering.
- Programmable output power in 63 steps from -16 dBm to +13 dBm with automatic power amplifier (PA) ramp control.
- On-chip VCO and fractional-N PLL with an output resolution of <1 ppm.
- On-chip 7-bit ADC and temperature sensor with accuracy of ±10°C over the full operating temperature range.
- Fully automatic frequency control loop (AFC) with programmable pull-in range.
- Image rejection calibration scheme achieving 56 dB image rejection without an external RF source.
- Low power consumption in both transmit and receive modes.
- Compatibility with various ISM band protocols and standards.
Applications
- Wireless sensor networks
- Industrial automation
- Home and building automation
- Asset tracking
- Telemetry and remote control systems
Q & A
- What is the operating frequency range of the ADF7021-NBCPZ-RL?
The operating frequency range is from 80 MHz to 650 MHz and 842 MHz to 916 MHz.
- What are the supported modulation schemes?
The device supports 2FSK, 3FSK, 4FSK, and MSK modulation schemes.
- What is the power supply range for this device?
The power supply range is from 2.3 V to 3.6 V.
- What are the programmable IF filter bandwidths?
The IF filter bandwidths are programmable to 9 kHz, 13.5 kHz, and 18.5 kHz.
- How is the output power controlled?
The output power is programmable in 63 steps from -16 dBm to +13 dBm with automatic PA ramp control.
- What is the receiver sensitivity?
The receiver sensitivity is -130 dBm at 100 bps, 2FSK, and -122 dBm at 1 kbps, 2FSK.
- Does the device support automatic frequency control?
Yes, it features a fully automatic frequency control loop (AFC) with a programmable pull-in range.
- How accurate is the on-chip temperature sensor?
The temperature sensor is accurate to ±10°C over the full operating temperature range.
- What package type is used for this device?
The device is packaged in a 48-Lead Lead Frame Chip Scale Package (LFCSP).
- Is the device RoHS compliant?
Yes, the device is RoHS compliant.
