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Analog Devices Inc. ADF7021BCPZ
- Part No.:
- ADF7021BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Transceiver ICs
- Package:
- 48-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADF7021BCPZ.pdf
- Description:
- IC RF TXRX ISM<1GHZ 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:627
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Product details
Overview
ADF7021BCPZ from Analog Devices is a highly integrated, low-power narrow-band FSK transceiver IC designed for license-free and licensed ISM band operation (80–650 MHz and 862–950 MHz). It supports 2FSK/3FSK/4FSK modulation with Gaussian or raised cosine filtering, delivers programmable output power from −16 dBm to +13 dBm in 63 steps, achieves −130 dBm sensitivity at 100 bps, and integrates on-chip VCOs, fractional-N PLL, 7-bit ADC, temperature sensor, and automatic frequency control (AFC) loop.
For engineers reviewing the ADF7021BCPZ datasheet, ADF7021BCPZ pinout, ADF7021BCPZ application, or ADF7021BCPZ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options for ETSI EN 300 220/FCC Part 15/ARIB STD-T67-compliant systems, and supply-ready availability details.
Technical Context
The ADF7021BCPZ implements a low-IF receiver architecture (100 kHz IF) with programmable IF filter bandwidths (12.5/18.75/25 kHz), enabling trade-offs between sensitivity and selectivity. Its dual-VCO fractional-N PLL supports sub-1 ppm resolution and operates at twice the fundamental RF frequency to suppress spurs and pulling effects.
Transmit path includes automatic PA ramp control, spectral shaping via selectable Gaussian (BT = 0.5) or raised cosine (α = 0.5/0.7) filters, and dynamic modulation switching across 2FSK/3FSK/4FSK. Receiver features patent-pending on-chip image rejection calibration (56 dB), digital RSSI, and AFC with programmable pull-in range up to 1.5 × IF_BW.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 80–650 MHz (external VCO) and 862–950 MHz (internal VCO); enables dual-band support without external synthesizer changes. |
| Data Rate | 0.05–32.8 kbps; covers ultra-low-rate telemetry (e.g., utility metering) to medium-rate remote control (e.g., keyless entry). |
| Receiver Sensitivity | −130 dBm @ 100 bps (2FSK); ensures reliable link budget in battery-powered WMTS or building control sensors. |
| Output Power Range | −16 to +13 dBm in 0.3125 dB steps; allows precise regulatory compliance tuning per regional standard (e.g., ETSI EN 300 220 Class 1). |
| Modulation Schemes | 2FSK/3FSK/4FSK with Gaussian or raised cosine filtering; supports protocol agility for adaptive throughput/range optimization. |
| IF Filter Bandwidth | 12.5 / 18.75 / 25 kHz; directly sets adjacent channel rejection (e.g., 27 dB at 25 kHz spacing) and BER performance vs. data rate. |
| Power Supply | 2.3–3.6 V; compatible with single-cell Li-ion or 3×AA alkaline battery systems without LDO overhead. |
Pinout & Package
The ADF7021BCPZ is housed in a 48-lead LFCSP package (7 mm × 7 mm × 0.85 mm, exposed pad), optimized for RF performance and thermal dissipation in compact wireless modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE | Chip Enable | Active-high digital control that powers up internal regulators and initiates startup timing (1 ms for TCXO, 2 ms for crystal). |
| RFOUT | Transmit RF Output | Differential RF output requiring matching network (e.g., 39 + j61 Ω at 915 MHz) before antenna or PA stage. |
| RFIN/RFINB | Receiver RF Input | Differential input with complex impedance (e.g., 24 − j60 Ω at 915 MHz); requires external balun or matching for single-ended antenna interface. |
| SCLK/SDATA/SREAD | 3-Wire Serial Interface | Configures all registers including VCO, modulation, IF filter, AFC, and demodulator setup; no external SPI controller needed. |
| CLKOUT | Reference Clock Output | Provides buffered crystal or TCXO reference (3.625–26 MHz) for system clock distribution or synchronization. |
| TEMP/ADCIN/BAT | Analog Monitor Inputs | Shared 7-bit ADC inputs for on-chip temperature sensor (±10°C accuracy), battery voltage, or external analog signal monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip image rejection calibration | Delivers 56 dB image rejection without external RF source or factory calibration fixture-reduces BOM and test cost. |
| Programmable IF filter bandwidth | Three discrete settings (12.5/18.75/25 kHz) allow real-time optimization of adjacent channel rejection vs. sensitivity in field-deployed devices. |
| Automatic frequency control (AFC) | Tracks incoming signal frequency error up to ±1.5 × IF_BW (e.g., ±18.75 kHz at 25 kHz IF_BW), maintaining lock under Doppler or oscillator drift. |
| Dual-VCO architecture | Enables seamless operation across disjoint bands (e.g., 433 MHz and 868 MHz) using same PCB layout-no hardware change required for multi-region deployment. |
| Integrated 7-bit ADC & temp sensor | Eliminates need for external ADC in battery monitoring or thermal compensation circuits; readback via serial interface. |
Applications
| Wireless Metering | Private Mobile Radio (PMR) |
|---|---|
Use Scenario: Gas/water/electricity meters transmit consumption data hourly over unlicensed ISM bands. IC Role / Device Role / Timing Role: ADF7021BCPZ serves as the full RF transceiver, handling modulation, filtering, AFC, and RSSI-based link quality reporting. Use Value: −130 dBm sensitivity at low data rates extends battery life to >10 years; programmable power ensures ETSI EN 300 220 Class 1 compliance. | Use Scenario: Handheld two-way radios for industrial site communication operating in 433/868 MHz bands. IC Role / Device Role / Timing Role: ADF7021BCPZ provides narrow-band FSK transmission with Gaussian filtering to meet FCC Part 90 spectral mask requirements. Use Value: Dual-VCO support allows single hardware design for both EU (433 MHz) and UK (868 MHz) PMR variants-reducing NRE and inventory complexity. |
| Wireless Medical Telemetry (WMTS) | Home Automation Sensors |
Use Scenario: Patient-worn ECG or SpO₂ monitors transmitting vital signs to bedside gateway in hospital environments. IC Role / Device Role / Timing Role: ADF7021BCPZ acts as the regulated RF front-end, implementing AFC to maintain lock amid RF interference from nearby medical equipment. Use Value: On-chip AFC and image rejection calibration ensure robust reception without manual alignment-critical for zero-touch clinical deployment. | Use Scenario: Battery-powered door/window sensors and motion detectors communicating to central hub via sub-GHz mesh. IC Role / Device Role / Timing Role: ADF7021BCPZ performs low-power receive listening (Rx mode current < 15 mA) and fast Tx wake-up (<1 ms) for event-triggered reporting. Use Value: 0.1 μA power-down leakage and programmable sensitivity modes enable >5-year battery life in intermittent-reporting applications. |
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 |
|---|---|---|---|
| Si4438-B1B-FMR | Higher max data rate (1 Mbps), integrated PA (up to +20 dBm), but no on-chip ADC or temperature sensor. | Better suited for high-throughput sensor networks; lacks built-in analog monitoring for battery/thermal management. | Select Si4438-B1B-FMR when higher output power and faster data rates outweigh need for integrated analog sensing. |
| CC1125RHBR | Wider frequency coverage (27–1050 MHz), superior phase noise (−110 dBc/Hz @ 10 kHz), but requires external crystal load capacitors and separate LNA/PA matching. | Preferred for wideband spectrum scanning or high-precision timing sync; adds design complexity for narrow-band fixed-frequency use. | Select CC1125RHBR when multi-band flexibility or ultra-low phase noise is mandatory, and external component count is acceptable. |
Compared with Si4438-B1B-FMR and CC1125RHBR, the ADF7021BCPZ offers unique integration of on-chip ADC, temperature sensor, and image rejection calibration-reducing bill-of-materials and production test burden for cost-sensitive, certified narrow-band systems.
Availability
ADF7021BCPZ is available at Aetrix Electronics and suitable for wireless metering, private mobile radio, and wireless medical telemetry service (WMTS) requiring stable component supply, long-lifecycle assurance, and regulatory-compliant narrow-band RF performance.
Supply support for ADF7021BCPZ 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 is a global leader in high-performance analog, mixed-signal, and RF ICs, serving industrial, communications, automotive, and healthcare markets with precision signal processing solutions.
The ADF7021 product line targets narrow-band license-free and licensed ISM band applications requiring regulatory compliance (ETSI/FCC/ARIB), low power, and high integration-enabling compact, certified wireless endpoints without external synthesizers or calibration fixtures.
FAQ
What is the operating frequency range supported by the ADF7021BCPZ?
The ADF7021BCPZ supports two distinct frequency ranges: 80–650 MHz using an external inductor VCO and 862–950 MHz using an internal inductor VCO. This dual-VCO architecture enables true dual-band operation-for example, supporting both 433 MHz (EU) and 868 MHz (EU/UK) bands within the same hardware design. Frequency selection is fully programmable via its 3-wire serial interface.
Does the ADF7021BCPZ include integrated calibration features?
Yes, the ADF7021BCPZ includes patent-pending on-chip image rejection calibration that achieves 56 dB rejection without requiring an external RF source or factory calibration step. It also features automatic frequency control (AFC) with programmable pull-in range and on-chip IF filter coarse/fine calibration-all executed autonomously after power-up or register command. These reduce production test time and eliminate manual alignment.
What modulation schemes does the ADF7021BCPZ support, and how are they applied?
The ADF7021BCPZ supports 2FSK, 3FSK, and 4FSK modulation with selectable Gaussian (BT = 0.5) or raised cosine (α = 0.5/0.7) spectral shaping. Modulation type and filter parameters are configured via Register 2 (Transmit Modulation Register) and Register 5 (IF Filter Setup Register). This enables protocol-level agility-for instance, switching from 2FSK for long-range telemetry to 4FSK for higher throughput in the same node.
How does the ADF7021BCPZ manage power consumption in battery-operated devices?
The ADF7021BCPZ minimizes power in battery applications via multiple mechanisms: 0.1 μA leakage in power-down mode, programmable Rx sensitivity modes (adjusting current vs. sensitivity trade-off), fast wake-up (<1 ms to Tx/Rx), and integrated 7-bit ADC for battery voltage monitoring-eliminating need for external components. Typical Rx current is <15 mA, and Tx current scales with output power (e.g., ~25 mA at +13 dBm).
Can the ADF7021BCPZ be used in FCC Part 15 and ETSI EN 300 220 compliant systems?
Yes, the ADF7021BCPZ is explicitly designed for compliance with ETSI EN 300 220, FCC Part 15, FCC Part 90, FCC Part 95, and ARIB STD-T67. Its programmable output power (−16 to +13 dBm), spectral shaping filters, adjacent channel power (−43 to −50 dBc), and occupied bandwidth control (e.g., 9.9 kHz at 25 kHz spacing) meet mandated masks and limits. Reference designs and regulatory test reports are available from Analog Devices.
ADF7021BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad, CSP
- Packaging:
- Tray
- 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 FAQ
1.How can I place an order for ADF7021BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF7021BCPZ 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 reliable?
The price and inventory of ADF7021BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF7021BCPZ is usually 5 days.
3.What payment methods are accepted for ADF7021BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF7021BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF7021BCPZ?
ADF7021BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF7021BCPZ 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?
For technical support, including ADF7021BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF7021BCPZ requirements.
6.How does Aetrix verify that ADF7021BCPZ is sourced from the original manufacturer or authorized distributors?
All ADF7021BCPZ 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 meets industry standards.
7.What is the process for return or replacement of ADF7021BCPZ?
All ADF7021BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with ADF7021BCPZ, 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 part is unused and in its original packaging.
Return procedure for ADF7021BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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