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Analog Devices Inc. ADF4117BRU-REEL7
- Part No.:
- ADF4117BRU-REEL7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADF4117BRU-REEL7.pdf
- Description:
- IC CLK/FREQ SYNTH 16TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADF4117BRU-REEL7 from Analog Devices is a 1.2 GHz RF PLL frequency synthesizer used as a local oscillator (LO) in wireless transceivers. It features a 32/33 dual-modulus prescaler, 2.7–5.5 V supply range, −40°C to +125°C Y-grade operation, and digital lock detect - enabling precise frequency synthesis for GSM/PCS/WCDMA base station transmitters.
For engineers reviewing the ADF4117BRU-REEL7 datasheet, ADF4117BRU-REEL7 pinout, ADF4117BRU-REEL7 application, or ADF4117BRU-REEL7 equivalent, key selection criteria include its 1.2 GHz RF input capability, 200 kHz phase detector frequency support, charge pump current programmability (250 µA / 1 mA), and TSSOP-16 package compatibility with high-density RF layouts.
Technical Context
The ADF4117BRU-REEL7 implements a complete integer-N PLL architecture with a low-noise PFD, precision charge pump, 14-bit R counter, 13-bit B counter, and 5-bit A counter. Its 32/33 dual-modulus prescaler enables N-divider values up to 221, supporting fine frequency resolution at high RF input frequencies.
It operates with external loop filtering and a VCO, using separate VP (up to 6.0 V) to extend tuning voltage headroom in 3 V systems. The 3-wire serial interface supports latch-selectable programming of R, N (A/B), function, and initialization registers - with Fastlock mode and power-down control for dynamic system optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Input Frequency | 0.1–1.2 GHz: supports full-band LO generation for PCS (1.8–1.9 GHz) and WCDMA (1.9–2.2 GHz) when paired with appropriate prescaler/VCO. |
| Phase Detector Frequency | Up to 55 MHz: enables high-resolution channel spacing (e.g., 200 kHz PFD with R = 50 yields 10 MHz REFIN). |
| Charge Pump Current | 250 µA or 1 mA typ: selectable via register; determines loop filter gain and lock time trade-offs in closed-loop design. |
| Supply Voltage Range | 2.7–5.5 V (AVDD/DVDD), VP ≥ AVDD up to 6.0 V: allows 3 V system integration while driving 6 V-tuned VCOs. |
| Operating Temperature | −40°C to +125°C (Y grade): qualified for automotive under-hood and industrial base station environments. |
| Output Spurious Level | −90/−104 dBc @ 900 MHz: measured at 200/400 kHz offsets; critical for meeting spectral mask requirements in cellular transmitters. |
| Phase Noise @ 1 kHz | −87 dBc/Hz @ 900 MHz: defines close-in noise floor impacting EVM and adjacent channel leakage ratio (ACLR). |
Pinout & Package
TSSOP-16 package (4.4 mm × 5.0 mm, 0.65 mm pitch), thermally enhanced with exposed pad (not electrically connected). Pin 1 marked by dot; pins numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FLO (Pin 1) | Fast Lock Switch Output | Open-drain output to dynamically switch loop filter bandwidth during lock acquisition - reduces settling time without external logic. |
| CP (Pin 2) | Charge Pump Output | Bi-directional ±ICP current source/sink driving external loop filter; requires CPGND return path for low-noise performance. |
| CPGND (Pin 3) | Charge Pump Ground | Dedicated analog ground return for CP; must be star-connected to minimize coupling into sensitive analog paths. |
| RFINA/RFINB (Pins 6/5) | Differential RF Input | AC-coupled CML inputs accepting 0.1–1.2 GHz signals; require 100 pF bypass on RFINB and impedance-matched trace routing. |
| REFIN (Pin 8) | Reference Clock Input | CMOS input (threshold ≈ DVDD/2); accepts 5–100 MHz crystal or oscillator signals - biasing and slew rate (>100 V/µs below 5 MHz) must be verified. |
| CE (Pin 10) | Chip Enable | Active-low hardware shutdown: forces charge pump into three-state and disables internal logic - enables rapid system-level power gating. |
| CLK/DATA/LE (Pins 11/12/13) | 3-Wire Serial Interface | Non-latching SPI-like bus; LE edge loads 21-bit shift register contents into selected latch (R, N, Function, or Init) per C1/C2 control bits. |
| MUXOUT (Pin 14) | Multiplexer Output | Programmable output for lock detect (digital/analog), scaled RF, or scaled reference - simplifies test/debug without additional probes. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-modulus prescaler (32/33) | Enables wide N-divider range (N = 32×B + A) while maintaining high PFD frequency - essential for low-noise, fast-locking synthesizers above 1 GHz. |
| Separate VP supply (up to 6.0 V) | Decouples charge pump headroom from core logic supply - permits use of high-tuning-range VCOs (e.g., 0–6 V) in 3 V systems without level-shifting. |
| Digital lock detect | Hardware-based lock confirmation (3 consecutive <15 ns phase errors); eliminates need for external monitoring circuitry or software polling delays. |
| Fastlock mode | Reduces PLL lock time by temporarily widening loop bandwidth via FLO pin - cuts typical settling time to ~200 µs at 900 MHz (vs. 400 µs standard). |
| Y-grade temperature range | −40°C to +125°C operation validated per AEC-Q100 stress tests - suitable for base station outdoor units and automotive radar LO stages. |
Applications
| GSM Base Station Transmitter | WCDMA Femtocell LO |
|---|---|
Use Scenario: Generating stable 900 MHz or 1800 MHz LO signals for upconversion in macrocell BTS power amplifiers. IC Role / Device Role / Timing Role: Integer-N PLL synthesizer providing phase-coherent LO with <15 ns lock detect assertion for transmit enable timing. Use Value: Meets −90 dBc spurious requirement at 200 kHz offset and delivers −87 dBc/Hz phase noise at 1 kHz offset - directly supporting 3GPP ACLR specs. | Use Scenario: Local oscillator in compact indoor WCDMA femtocell access points requiring low power and small footprint. IC Role / Device Role / Timing Role: Frequency synthesizer operating from 3 V supply with VP = 5 V, driving narrow-tuning VCO for 2.1 GHz band. Use Value: 4.5 mA typical IDD enables thermal management in sealed enclosures; TSSOP-16 fits high-density PCB layouts with minimal RF shielding overhead. |
| PCS Handset Front-End | Wireless Test Equipment LO |
Use Scenario: Dual-band LO generation (800/1900 MHz) in CDMA/PCS handset transceivers with fast channel switching. IC Role / Device Role / Timing Role: Programmable synthesizer supporting rapid reconfiguration via 3-wire interface and Fastlock mode for <500 µs channel hop. Use Value: 200 µs typical lock time at 1900 MHz meets TIA/EIA-98 standards for mobile handover latency. | Use Scenario: Reference source in vector signal analyzers and synthesizers requiring ultra-low spurs and repeatable phase noise. IC Role / Device Role / Timing Role: High-stability LO generator with digital lock detect feedback to instrument firmware for automated calibration sequences. Use Value: −104 dBc second reference spur at 400 kHz offset ensures measurement integrity in adjacent-channel power ratio (ACPR) testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF PLL synthesizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADF4153AACPZ-R7 | Higher max RF input (4.4 GHz), integrated LDO, SPI-compatible interface, but no FLO pin or Y-grade option. | Better suited for microwave backhaul or 5G FR1 where >2 GHz synthesis is required; lacks automotive temp qualification. | Select when extending beyond 1.2 GHz or needing single-supply simplicity; avoid if Fastlock or −40°C to +125°C operation is mandatory. |
| LMX2531LQ1E050/NOPB | Lower max RF input (2.6 GHz), fractional-N architecture, integrated VCO, no separate VP pin. | Enables finer frequency resolution (Hz-level) and faster lock than integer-N; unsuitable for high-spur-margin base station transmitters. | Prefer for agile frequency hopping or low-phase-noise receiver LOs; not recommended for high-power transmitter LO where integer-N spurious performance is critical. |
Compared with ADF4117BRU-REEL7, the ADF4153A offers wider frequency coverage but sacrifices automotive-grade reliability and Fastlock capability, while the LMX2531LQ1 provides superior resolution and integration at the cost of higher reference spurs and no extended temperature support.
Availability
ADF4117BRU-REEL7 is available at Aetrix Electronics and suitable for GSM base station transmitters, WCDMA femtocells, PCS handset front-ends, wireless test equipment, and CATV infrastructure requiring stable component supply across extended temperature ranges.
Supply support for ADF4117BRU-REEL7 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 communications, industrial, automotive, and instrumentation markets with precision signal processing solutions.
The ADF411x product line was designed specifically for high-reliability wireless infrastructure LO generation, emphasizing low phase noise, robust spurious performance, and extended temperature operation in base station and test equipment applications.
FAQ
What is the maximum RF input frequency supported by the ADF4117BRU-REEL7?
The ADF4117BRU-REEL7 supports an RF input frequency range of 0.1 GHz to 1.2 GHz, as specified in the Rev. D datasheet Table 1. This upper limit is defined by the 32/33 dual-modulus prescaler's electrical characteristics and has been validated across the Y-grade temperature range (−40°C to +125°C). Operation beyond 1.2 GHz is not guaranteed and may result in degraded phase noise or lock failure.
Does the ADF4117BRU-REEL7 require an external loop filter?
Yes, the ADF4117BRU-REEL7 requires an external passive loop filter between the CP pin and the VCO tuning port. The charge pump output (CP) drives this filter to generate the analog tuning voltage; no internal filtering is provided. Designers must select resistor/capacitor values based on desired loop bandwidth, phase margin, and reference spur suppression - as detailed in Analog Devices' AN-587 application note.
Can the ADF4117BRU-REEL7 operate from a 3.3 V supply?
Yes, the ADF4117BRU-REEL7 operates with AVDD and DVDD from 2.7 V to 5.5 V, including 3.3 V nominal. The datasheet specifies performance (e.g., 4.5 mA typical IDD, −87 dBc/Hz phase noise) at both 3 V and 5 V. VP must be ≥ AVDD (so ≥3.3 V) and ≤6.0 V - allowing use of a 5 V VP rail to drive wide-tuning VCOs while maintaining 3.3 V logic compatibility.
What is the function of the FLO pin on the ADF4117BRU-REEL7?
The FLO (Fast Lock Switch Output) pin on the ADF4117BRU-REEL7 is an open-drain output that controls an external resistor network to dynamically widen the PLL loop bandwidth during lock acquisition. When asserted, it reduces lock time to ~200 µs at 900 MHz (per Figure 7), then releases to restore nominal bandwidth for optimal in-band phase noise - eliminating need for microcontroller intervention.
Is the ADF4117BRU-REEL7 pin-compatible with other ADF411x family members?
No, the ADF4117BRU-REEL7 is not pin-compatible with ADF4116 or ADF4118 variants. While all share the same TSSOP-16 package and core pin functions (e.g., CP, REFIN, CLK), the ADF4116 uses an 8/9 prescaler and supports only up to 550 MHz RF input, whereas ADF4117/ADF4118 use 32/33 and differ in maximum RF rating (1.2 GHz vs. 3.0 GHz). Electrical tolerances and layout constraints are not interchangeable.
ADF4117BRU-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Clock/Frequency Synthesizer (RF)
- PLL:
- Yes
- Input:
- CMOS, TTL
- Output:
- Clock
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 2:1
- Differential - Input:Output:
- Yes/No
- Frequency - Max:
- 1.2GHz
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-TSSOP
ADF4117BRU-REEL7 FAQ
1.How can I place an order for ADF4117BRU-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF4117BRU-REEL7 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 ADF4117BRU-REEL7 reliable?
The price and inventory of ADF4117BRU-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF4117BRU-REEL7 is usually 5 days.
3.What payment methods are accepted for ADF4117BRU-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF4117BRU-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF4117BRU-REEL7?
ADF4117BRU-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF4117BRU-REEL7 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 ADF4117BRU-REEL7?
For technical support, including ADF4117BRU-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF4117BRU-REEL7 requirements.
6.How does Aetrix verify that ADF4117BRU-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADF4117BRU-REEL7 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 ADF4117BRU-REEL7 meets industry standards.
7.What is the process for return or replacement of ADF4117BRU-REEL7?
All ADF4117BRU-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADF4117BRU-REEL7, 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 ADF4117BRU-REEL7 part is unused and in its original packaging.
Return procedure for ADF4117BRU-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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