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Analog Devices Inc. ADF7021BCPZ-RL
- Part No.:
- ADF7021BCPZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Transceiver ICs
- Package:
- 48-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADF7021BCPZ-RL.pdf
- Description:
- IC RF TXRX ISM<1GHZ 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,237
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Product details
Overview
ADF7021BCPZ-RL from Analog Devices is a high-performance, low-power, narrow-band FSK transceiver IC operating across 80–650 MHz and 862–950 MHz bands. It supports 2FSK/3FSK/4FSK modulation with programmable output power (−16 dBm to +13 dBm), −130 dBm receiver sensitivity at 100 bps, and integrated fractional-N PLL with on-chip VCOs. It is designed for ETSI EN 300 220, FCC Part 15/90/95, and ARIB STD-T67 compliant wireless metering and remote control systems.
For engineers reviewing the ADF7021BCPZ-RL datasheet, ADF7021BCPZ-RL pinout, ADF7021BCPZ-RL application, or ADF7021BCPZ-RL equivalent, key selection criteria include dual-VCO frequency agility, Gaussian/raised cosine spectral shaping, AFC loop performance, image rejection calibration, and 3-wire serial interface compatibility with microcontroller-based embedded RF designs.
Technical Context
The ADF7021BCPZ-RL implements a low-IF receiver architecture (100 kHz IF) with programmable IF filter bandwidths (12.5/18.75/25 kHz) and fully automatic frequency control (AFC) with ±0.5–1.5×IF_BW pull-in range. Its transmitter uses dual VCOs-one internal LC tank (862–950 MHz, 431–475 MHz) and one external-inductor-based (80–650 MHz)-enabling dual-band operation without external switching.
It integrates a 7-bit ADC for temperature sensing (±10°C accuracy), battery voltage monitoring, and RSSI readback; on-chip image rejection calibration achieves 56 dB image rejection without external RF sources. The fractional-N PLL delivers <1 ppm resolution and ≤40 µs settling for 10 MHz frequency steps at 100 kHz loop bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 80–650 MHz (external VCO) and 862–950 MHz (internal VCO); enables license-free ISM and licensed band operation per regional standards |
| Modulation Schemes | 2FSK/3FSK/4FSK with Gaussian and raised cosine filtering; supports dynamic protocol switching to optimize range vs. throughput |
| Data Rate Range | 0.05 kbps to 32.8 kbps; accommodates ultra-low-power telemetry and higher-throughput remote control |
| Receiver Sensitivity | −130 dBm @ 100 bps (2FSK); enables long-range, low-power sensor node reception in noisy industrial environments |
| Output Power Range | −16 dBm to +13 dBm in 63 steps; allows precise regulatory compliance tuning and antenna matching optimization |
| Power Supply | 2.3 V to 3.6 V; compatible with single-cell Li-ion, LiFePO₄, or 3×AA alkaline battery systems |
| Image Rejection | 56 dB after on-chip calibration; eliminates need for external image-reject filters and reduces BOM cost |
Pinout & Package
The ADF7021BCPZ-RL is housed in a 48-lead LFCSP (7 mm × 7 mm × 0.85 mm) package with exposed thermal pad. Pin functions are defined per Analog Devices' Rev. D datasheet, Figure 10 (Pin Configuration and Function Descriptions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE | Chip Enable | Active-high digital control that powers up regulators and initiates startup sequence; enables rapid wake-up from 0.1 μA power-down mode |
| SCLK, SDATA, SREAD | 3-Wire Serial Interface | Asynchronous SPI-compatible bus for register configuration; requires no external clock source or framing overhead |
| RFIN / RFINB | Differential RF Input | Low-noise amplifier input pair; impedance varies by frequency (e.g., 24 − j60 Ω @ 915 MHz); requires matched balun or differential front-end |
| RFOUT | Single-Ended RF Output | PA output port; optimal load impedance is frequency-dependent (e.g., 39 + j61 Ω @ 915 MHz); mandates external matching network |
| OSC1 / OSC2 | Crystal/Oscillator Inputs | Supports 3.625–26 MHz crystal or clipped sine/CMOS external reference; start-up time as low as 0.438 ms with 35 µA XTAL bias |
| TEMP / ADCIN / VBAT | Analog Monitor Inputs | Shared 7-bit ADC inputs for on-die temperature sensor, external battery voltage, or analog signal monitoring-reduces system-level ADC count |
Key Features
| Feature | Design Value |
|---|---|
| Dual-VCO Architecture | Enables simultaneous support for sub-GHz ISM bands (e.g., 433 MHz EU and 915 MHz US) without external RF switches or re-tuning |
| Patent-Pending Image Rejection Calibration | Delivers 56 dB image rejection using only on-chip circuitry-no external RF source or factory calibration required |
| Programmable IF Filter Bandwidth | Three selectable bandwidths (12.5/18.75/25 kHz) let designers trade sensitivity vs. adjacent-channel selectivity based on channel spacing requirements |
| Integrated Temperature Sensor | On-die sensor accurate to ±10°C over −40°C to +85°C; enables closed-loop PA power compensation and thermal derating in outdoor deployments |
| Automatic Frequency Control (AFC) | Digitally programmable pull-in range (0.5–1.5×IF_BW) tracks frequency drift from crystal aging or temperature variation in real time |
| Low IF Receiver (100 kHz) | Eliminates DC offset and flicker noise issues common in zero-IF receivers while minimizing external component count and power consumption |
Applications
| Wireless Metering | Remote Security Systems |
|---|---|
Use Scenario: Battery-powered gas/water/electricity meters transmitting consumption data hourly via star-network topology to concentrators. IC Role / Device Role / Timing Role: Full-duplex transceiver handling burst-mode uplink transmission and periodic downlink command reception; manages timing-critical AFC lock during short receive windows. Use Value: −130 dBm sensitivity extends range to >1 km in urban pipe infrastructure; programmable 12.5 kHz IF filter meets ETSI EN 300 220 spectral mask for 12.5 kHz channel spacing. |
Use Scenario: Wireless door/window sensors and motion detectors in residential security panels operating under FCC Part 90/95 rules. IC Role / Device Role / Timing Role: Low-latency transceiver supporting fast Tx-to-Rx turnaround (<300 µs + 5×tBIT) for ACK-based polling and anti-jamming frequency hopping. Use Value: Dual-VCO agility enables seamless 433 MHz (EU) and 915 MHz (US) variants from same PCB layout; automatic PA ramp control suppresses spectral splatter during alarm-triggered bursts. |
| Industrial Process Control | Medical Telemetry (WMTS) |
Use Scenario: Wireless sensor nodes monitoring pressure, flow, and temperature in hazardous Zone 2 industrial plants with explosion-proof enclosures. IC Role / Device Role / Timing Role: Robust narrowband transceiver operating in 868 MHz band with calibrated image rejection to withstand EMI from VFDs and motors. Use Value: 56 dB on-chip image rejection eliminates need for external preselector filters; −24 dBm IIP3 in high-sensitivity mode maintains BER <10⁻³ amid strong interferers. |
Use Scenario: Body-worn patient monitors transmitting vital signs (ECG, SpO₂) to bedside units in hospital WMTS bands (e.g., 608–614 MHz, 1395–1400 MHz). IC Role / Device Role / Timing Role: Regulatory-compliant transceiver supporting ARIB STD-T67 and FCC Part 95; handles low-duty-cycle transmissions with precise AFC tracking of crystal drift. Use Value: Integrated 7-bit ADC reads on-die temperature and battery voltage-enables predictive maintenance alerts without adding discrete sensors or ADCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar narrow-band FSK transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si4463-B1B-FMR | Higher max data rate (1 Mbps), integrated DC-DC converter, but no on-chip temperature sensor or 7-bit ADC | Better suited for high-throughput sensor networks; lacks integrated analog monitoring capability | Select when system-level power efficiency demands integrated buck regulator and higher speed is needed |
| CC1125RHBR | Wider frequency range (27–1050 MHz), superior phase noise (−110 dBc/Hz @ 10 kHz), but requires external IF filter and no built-in AFC calibration | Preferred for wideband spectrum analysis or custom PHY development; adds design complexity for narrowband compliance | Select when ultra-low phase noise and wideband flexibility outweigh integration benefits and regulatory certification effort |
Compared with Si4463-B1B-FMR and CC1125RHBR, the ADF7021BCPZ-RL provides unique on-chip image rejection calibration, integrated analog monitoring (temperature/battery/RSSI), and dual-VCO dual-band support-making it optimal for cost-sensitive, certified narrowband deployments where BOM reduction and regulatory alignment are critical.
Availability
ADF7021BCPZ-RL is available at Aetrix Electronics and suitable for wireless metering, remote security systems, industrial process control, and medical telemetry requiring stable component supply and long-term lifecycle assurance.
Supply support for ADF7021BCPZ-RL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide.
The ADF7021BCPZ-RL belongs to Analog Devices' ADF70xx family of narrow-band transceivers, engineered specifically for regulatory-compliant, low-power, license-free and licensed-band wireless communication in industrial, utility, and medical applications.
FAQ
What frequency bands does the ADF7021BCPZ-RL support?
The ADF7021BCPZ-RL supports two distinct frequency ranges: 80 MHz to 650 MHz using an external-inductor VCO, and 862 MHz to 950 MHz (plus 431–475 MHz in divide-by-2 mode) using an internal LC-tank VCO. This dual-VCO architecture enables operation across ETSI EN 300 220 (433/868 MHz), FCC Part 15/90/95 (902–928 MHz), and ARIB STD-T67 (315/426 MHz) bands without hardware changes. Each VCO is optimized for its respective range to ensure phase noise and power efficiency targets are met.
How does the ADF7021BCPZ-RL achieve −130 dBm receiver sensitivity?
The ADF7021BCPZ-RL achieves −130 dBm sensitivity at 100 bps (2FSK) through a combination of low-noise LNA design, programmable high-sensitivity mode (LNA_GAIN = 30), narrow 12.5 kHz IF filter bandwidth, and optimized demodulator CDR loop. This sensitivity level is measured under high-sensitivity mode with Gaussian filtering and 1 kHz frequency deviation. The low-IF architecture avoids flicker noise, while the integrated AFC loop compensates for frequency drift, preserving SNR in real-world deployment conditions.
Does the ADF7021BCPZ-RL require external components for image rejection calibration?
No, the ADF7021BCPZ-RL performs image rejection calibration entirely on-chip using a patent-pending scheme that requires no external RF source, test equipment, or factory calibration step. After power-up or register-initiated calibration, it achieves 56 dB image rejection-verified across 450 MHz and 900 MHz bands in production testing. This eliminates the need for external image-reject filters or costly calibration fixtures, reducing both BOM cost and manufacturing complexity for the ADF7021BCPZ-RL.
What is the role of the integrated 7-bit ADC in the ADF7021BCPZ-RL?
The integrated 7-bit ADC in the ADF7021BCPZ-RL provides readback capability for four analog inputs: on-die temperature sensor (±10°C accuracy), external battery voltage (VBAT), auxiliary analog input (ADCIN), and RSSI signal. This eliminates the need for an external ADC in many battery-powered applications-reducing component count, PCB area, and system power. The ADC supports single-shot or continuous conversion modes and is accessible via the same 3-wire serial interface used for transceiver configuration.
Can the ADF7021BCPZ-RL be used in FCC Part 95-compliant keyless entry systems?
Yes, the ADF7021BCPZ-RL is explicitly validated for FCC Part 95 applications including keyless entry, garage door openers, and remote start systems. Its programmable output power (−16 dBm to +13 dBm), automatic PA ramp control, and spectral shaping (Gaussian/raised cosine filtering) meet stringent occupied bandwidth and adjacent channel power (ACP) limits. At 315 MHz and 433 MHz, it achieves ≥−50 dBc ACP in 12.5 kHz channels-fully compliant with FCC Part 95.27 and Part 95.29 requirements for narrowband devices.
ADF7021BCPZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx Only
- RF Family/Standard:
- General ISM < 1GHz
- Protocol:
- -
- Modulation:
- 2FSK, 2GFSK, 3FSK, 4FSK, FHSS, GMSK, MSK
- Frequency:
- 80MHz ~ 650MHz, 862MHz ~ 950MHz
- Data Rate (Max):
- 32.8kbps
- Power - Output:
- 13dBm
- Sensitivity:
- -130dBm
- Memory Size:
- -
- Serial Interfaces:
- SPI, UART
- GPIO:
- -
- Voltage - Supply:
- 2.3V ~ 3.6V
- Current - Receiving:
- 17.5mA ~ 26.4mA
- Current - Transmitting:
- 13.5mA ~ 32.3mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-LFCSP (7x7)
ADF7021BCPZ-RL FAQ
1.How can I place an order for ADF7021BCPZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF7021BCPZ-RL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADF7021BCPZ-RL reliable?
The price and inventory of ADF7021BCPZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF7021BCPZ-RL is usually 5 days.
3.What payment methods are accepted for ADF7021BCPZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF7021BCPZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF7021BCPZ-RL?
ADF7021BCPZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF7021BCPZ-RL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADF7021BCPZ-RL?
For technical support, including ADF7021BCPZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF7021BCPZ-RL requirements.
6.How does Aetrix verify that ADF7021BCPZ-RL is sourced from the original manufacturer or authorized distributors?
All ADF7021BCPZ-RL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADF7021BCPZ-RL meets industry standards.
7.What is the process for return or replacement of ADF7021BCPZ-RL?
All ADF7021BCPZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADF7021BCPZ-RL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADF7021BCPZ-RL part is unused and in its original packaging.
Return procedure for ADF7021BCPZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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