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Analog Devices Inc. ADF7011BRU-REEL
- Part No.:
- ADF7011BRU-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Transmitters
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADF7011BRU-REEL.pdf
- Description:
- IC ASK/FSK/GFSK BAND TX 24-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,350
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Product details
Overview
ADF7011BRU-REEL from Analog Devices is a single-chip, low-power UHF ASK/FSK/GFSK transmitter IC operating in 433–435 MHz and 868–870 MHz ISM bands. It integrates a fractional-N PLL, on-chip VCO, and programmable PA delivering –16 dBm to +12 dBm output power in 0.3125 dB steps, supporting data rates up to 76.8 kbps. It is used in wireless metering and keyless entry systems requiring ETSI-compliant sub-GHz RF transmission.
For engineers reviewing the ADF7011BRU-REEL datasheet, ADF7011BRU-REEL pinout, ADF7011BRU-REEL application, or ADF7011BRU-REEL equivalent, this page provides verified functional specifications, validated 24-pin TSSOP package mapping, confirmed modulation scheme selection (OOK/ASK/FSK/GFSK), real-world spurious performance at 433/868 MHz, and accurate regulator-ready timing for serial interface initialization.
Technical Context
The ADF7011BRU-REEL implements a Σ-Δ fractional-N PLL architecture with dual-modulus prescaler (8/9 or 4/5) and integrated charge pump driving an external loop filter. Its VCO operates at 433–435 MHz or 868–870 MHz with gain of 40 MHz/V (433 MHz) or 80 MHz/V (868 MHz), enabling precise channel spacing via 24-bit register programming.
Modulation is selected via the Modulation Register: FSK/GFSK uses frequency deviation controlled by PFD frequency and modulation bits (e.g., 58 kHz at 19.2 kbps); ASK achieves ≥28 dB depth; OOK reaches ≥40 dB depth. Frequency compensation supports ±1 ppm crystal error correction, and indirect temperature compensation is enabled through the crystal compensation register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Bands | 433–435 MHz and 868–870 MHz ISM/SRD bands - enables ETSI 300-220 compliance in European wireless metering and security applications |
| Output Power Range | –16 dBm to +12 dBm in 0.3125 dB steps - allows fine-grained RF link budget tuning without external attenuators |
| Data Rates | FSK/GFSK: 0.3–76.8 kbps; ASK: 0.3–9.6 kbps - supports high-speed telemetry and low-power sensor wake-up protocols |
| Phase Noise | –83 dBc/Hz @ 5 kHz offset (868 MHz) - ensures clean spectral mask for narrowband FSK in congested 868 MHz SRD band |
| Supply Voltage | 2.3 V to 3.6 V - compatible with single-cell Li-ion or 3.3 V system rails without level-shifting |
| Power-Down Current | <1 µA - enables battery-powered devices to achieve multi-year shelf life in sleep mode |
| Reference Input | Crystal: 1.7–22.1184 MHz; External oscillator: 3.4–40 MHz - supports low-cost fundamental-mode crystals or TCXOs for temperature-stable operation |
Pinout & Package
Package: 24-lead TSSOP (RU-24), 0.65 mm pitch, exposed pad not present. RoHS-compliant, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RSET | Charge pump current bias | 4.7 kΩ sets max charge pump current to 2.02 mA - critical for loop stability and lock time; value must be matched to loop filter design |
| CE | Chip enable | Active-high logic input - only method to power down regulator and erase registers; must be high before serial programming |
| DATA/CLK/LE | 3-wire serial interface | MSB-first 24-bit shift register load - requires t1 ≥10 ns setup, t2 ≥10 ns hold, t6 ≥20 ns LE pulsewidth per timing diagram |
| TxDATA/TxCLK | GFSK data interface | TxCLK synchronizes microcontroller data to ADF7011BRU-REEL - eliminates timing jitter in Gaussian-filtered bit streams |
| MUXOUT | Multiplexed debug output | Selects Regulator Ready (default), Digital Lock Detect, or divided reference - enables real-time PLL status monitoring without test equipment |
| RFOUT | Modulated RF output | 50 Ω impedance-matched output - requires external matching network (e.g., π-network) due to complex ZOUT: 25 – j2.6 Ω @ 433 MHz |
Key Features
| Feature | Design Value |
|---|---|
| Fractional-N PLL with Σ-Δ modulator | Enables arbitrary channel selection within 433/868 MHz bands - supports frequency hopping and avoids crowded channels in SRD applications |
| Four modulation schemes (OOK/ASK/FSK/GFSK) | Single device replaces multiple legacy transmitters - reduces BOM count and simplifies firmware for multi-standard remote controls |
| Crystal frequency compensation register (±1 ppm) | Corrects aging and temperature drift without external DAC - eliminates need for TCXO in cost-sensitive metering endpoints |
| Integrated 2.2 V LDO regulator (CREG pin) | Stabilizes VCO and PA supply independently of DVDD - prevents supply noise from degrading phase noise and spurious performance |
| Digital lock detect with 5-cycle validation | Provides deterministic, no-component lock indication - simplifies host MCU firmware versus analog lock detect with pull-up resistor |
Applications
| Wireless Metering | Keyless Entry |
|---|---|
Use Scenario: Battery-powered gas/water meters transmitting consumption data hourly via 868 MHz SRD band. IC Role / Device Role / Timing Role: ASK transmitter with 9.6 kbps rate and ≥28 dB depth - meets ETSI spectral mask while minimizing current draw during brief transmit bursts. Use Value: Programmable output power (–16 to +12 dBm) enables adaptive link margin control across varying pipe-wall attenuation and antenna placement. | Use Scenario: Automotive key fob sending encrypted rolling-code packets at 433.92 MHz with <200 ms latency. IC Role / Device Role / Timing Role: FSK transmitter with 76.8 kbps capability and 58 kHz deviation - satisfies fast packet turnaround and regulatory occupied bandwidth limits. Use Value: On-chip VCO + fractional-N PLL eliminates external VCO tuning components, reducing PCB area and calibration labor. |
| Remote Security Systems | Industrial Sensor Networks |
Use Scenario: Door/window sensors reporting open/close events using low-duty-cycle OOK modulation. IC Role / Device Role / Timing Role: OOK transmitter with ≥40 dB depth and <1 µA power-down current - extends CR2032 battery life beyond 5 years. Use Value: Regulator Ready signal on MUXOUT ensures reliable serial programming after cold start, preventing register corruption. | Use Scenario: Factory-floor temperature nodes transmitting every 10 seconds using GFSK to suppress adjacent-channel interference. IC Role / Device Role / Timing Role: GFSK transmitter with 2.0–2.5× data rate loop BW - balances spectral efficiency and noise immunity in electrically noisy environments. Use Value: TxCLK output synchronizes MCU data clock to ADF7011BRU-REEL, eliminating inter-symbol jitter in Gaussian-filtered streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UHF ASK/FSK transmitter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADF7021BRUZ-RL7 | Integrated receiver path + higher integration; 2.7–3.6 V supply; supports FSK/OOK only; no GFSK | Full transceiver use case (e.g., bidirectional sensor nodes); requires different register map and timing | Select when two-way communication is needed and board space permits larger footprint |
| SI4432-B1B-FM | Sub-GHz transceiver with +20 dBm PA; 1.8–3.6 V; proprietary packet engine; no fractional-N PLL | Longer-range links (>1 km) with embedded CRC and FIFO; lacks crystal compensation register | Select for extended range where ETSI-compliant +12 dBm is insufficient and host MCU offload is valuable |
Compared with ADF7021BRUZ-RL7 and SI4432-B1B-FM, the ADF7011BRU-REEL offers superior frequency agility via fractional-N synthesis and dedicated GFSK support, making it optimal for ETSI-constrained hopping systems where spectral purity and modulation flexibility outweigh transceiver functionality.
Availability
ADF7011BRU-REEL is available at Aetrix Electronics and suitable for wireless metering, keyless entry, and remote security systems requiring stable component supply, long-term industrial lifecycle support, and full traceability to original Analog Devices wafer lots.
Supply support for ADF7011BRU-REEL 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 precision instrumentation, communications, and industrial markets since 1965.
The ADF7011BRU-REEL belongs to Analog Devices' sub-GHz RF transmitter product line, designed specifically for ETSI-compliant, low-power wireless systems in utility metering, building automation, and automotive access.
FAQ
What modulation schemes does the ADF7011BRU-REEL support, and how are they selected?
The ADF7011BRU-REEL supports OOK, ASK, FSK, and GFSK modulation. Selection is made via bits S2/S1 in the Modulation Register: 00 = FSK, 01 = GFSK, 10 = ASK, 11 = OOK. The ADF7011BRU-REEL's register-based control allows runtime switching between schemes without hardware changes, enabling flexible firmware-defined radio protocols.
How does the ADF7011BRU-REEL achieve ETSI 300-220 compliance in the 868 MHz band?
The ADF7011BRU-REEL meets ETSI 300-220 requirements through its fractional-N PLL's precise channel spacing, programmable loop bandwidth (2–5× data rate), and harmonic suppression design. At +3 dBm output, spurious emissions are ≤–54 dBm in specified bands; adding an external output filter enables >+10 dBm operation while maintaining compliance. The ADF7011BRU-REEL's documented phase noise and harmonic levels confirm conformance.
What is the role of the RSET pin, and what value resistor should be used?
The RSET pin sets the maximum charge pump current and internal bias currents. A 4.7 kΩ resistor yields 2.02 mA CP current, which is the default value validated for stable PLL lock and minimal reference spurs. Using values outside 2.7–10 kΩ risks degraded phase noise or extended lock time. The ADF7011BRU-REEL's datasheet specifies this value for all production-tested configurations.
Can the ADF7011BRU-REEL operate with an external oscillator instead of a crystal?
Yes, the ADF7011BRU-REEL accepts external oscillators from 3.4 MHz to 40 MHz applied to the OSC2 pin. The XOE bit in the R register must be set high to disable the internal crystal oscillator. CMOS-level inputs are required, and the ADF7011BRU-REEL maintains full frequency compensation and modulation functionality with external references.
What is the purpose of the MUXOUT pin, and what signals can it output?
MUXOUT is a multiplexed debug output controlled by bits M1–M4 in the Function Register. It can output Regulator Ready (default on power-up), Digital Lock Detect, Analog Lock Detect, R-divider/2, N-divider/2, or RF divider outputs. This allows real-time verification of PLL lock status and internal clock domains without additional test points - a key diagnostic feature of the ADF7011BRU-REEL.
ADF7011BRU-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Frequency:
- 433MHz ~ 435MHz, 866MHz ~ 870MHz
- Applications:
- Data Transfer, RKE, Remote Control/Security Systems
- Modulation or Protocol:
- ASK, FSK, GFSK, OOK
- Data Rate (Max):
- 76.8kbps
- Power - Output:
- -16dBm ~ 12dBm
- Current - Transmitting:
- 34mA
- Data Interface:
- PCB, Surface Mount
- Antenna Connector:
- PCB, Surface Mount
- Memory Size:
- -
- Features:
- -
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
ADF7011BRU-REEL FAQ
1.How can I place an order for ADF7011BRU-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF7011BRU-REEL 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 ADF7011BRU-REEL reliable?
The price and inventory of ADF7011BRU-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF7011BRU-REEL is usually 5 days.
3.What payment methods are accepted for ADF7011BRU-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF7011BRU-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF7011BRU-REEL?
ADF7011BRU-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF7011BRU-REEL 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 ADF7011BRU-REEL?
For technical support, including ADF7011BRU-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF7011BRU-REEL requirements.
6.How does Aetrix verify that ADF7011BRU-REEL is sourced from the original manufacturer or authorized distributors?
All ADF7011BRU-REEL 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 ADF7011BRU-REEL meets industry standards.
7.What is the process for return or replacement of ADF7011BRU-REEL?
All ADF7011BRU-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADF7011BRU-REEL, 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 ADF7011BRU-REEL part is unused and in its original packaging.
Return procedure for ADF7011BRU-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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