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Analog Devices Inc. ADF4110BRU-REEL
- Part No.:
- ADF4110BRU-REEL
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADF4110BRU-REEL.pdf
- Description:
- IC CLK/FREQ SYNTH 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,460
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Product details
Overview
ADF4110BRU-REEL from Analog Devices is a 550 MHz RF PLL frequency synthesizer IC used as a local oscillator in wireless transceiver up/downconversion stages. It features a 24-bit serial interface, programmable dual-modulus prescaler (8/9, 16/17, 32/33, 64/65), 2.7–5.5 V supply range, separate VP pin for extended tuning voltage, and analog/digital lock detect. It targets GSM/PCS/CDMA base station and handset RF front-ends.
For engineers reviewing the ADF4110BRU-REEL datasheet, ADF4110BRU-REEL pinout, ADF4110BRU-REEL application, or ADF4110BRU-REEL equivalent, key selection criteria include RF input frequency range (50–550 MHz at 3 V), charge pump current programmability (625 µA to 5 mA), phase detector frequency limit (55 MHz max), and TSSOP-16 package compatibility with industrial temperature operation (−40°C to +85°C).
Technical Context
The ADF4110BRU-REEL implements a digital phase-frequency detector (PFD) with precision charge pump, 14-bit R counter, 6-bit A counter, 13-bit B counter, and dual-modulus prescaler (P/P+1) to realize N = BP + A division. Its architecture supports fractional-N synthesis when paired with external loop filter and VCO.
It operates with independent analog (AVDD) and digital (DVDD) supplies tied together (2.7–5.5 V), plus a dedicated charge pump supply VP (≥AVDD, ≤6.0 V) enabling higher tuning voltage headroom in 3 V systems. Lock detection is provided via both analog comparator and digital logic outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Input Frequency | 50–550 MHz at 3 V supply; enables direct use with VCOs covering UHF bands in GSM/PCS infrastructure. |
| Phase Detector Max Frequency | 55 MHz; sets upper bound on PFD rate, directly limiting loop bandwidth and settling time in closed-loop design. |
| Charge Pump Current Range | 625 µA to 5 mA (programmable via RSET); allows optimization of loop filter component values and noise vs. lock time trade-offs. |
| Supply Voltage Range | 2.7–5.5 V for AVDD/DVDD; supports single-rail operation across legacy 3.3 V and modern 5 V RF subsystems. |
| VP Supply Range | AVDD to 6.0 V; permits 6 V tuning voltage generation even from 3 V system rail, extending VCO frequency coverage. |
| Operating Temperature | −40°C to +85°C (Industrial B Version); qualified for deployment in outdoor base stations and mobile handsets. |
| Power Consumption | 5.5 mA max IDD at 3 V; low quiescent current supports battery-sensitive portable RF applications. |
Pinout & Package
TSSOP-16 package with exposed paddle (connected to AGND per datasheet Note 1). Pinout validated from Figure 3 and Table 4 of Rev. F datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RSET | Charge pump current setting | Resistor-to-ground sets ICPmax (e.g., 4.7 kΩ → 5 mA); critical for loop filter gain calibration. |
| CP | Charge pump output | Drives external loop filter; requires low-impedance path to VCO tuning line; sensitive to PCB parasitics. |
| CPGND | Charge pump ground return | Dedicated low-noise ground path; must be isolated from digital ground to minimize reference spurs. |
| RFINA / RFINB | Differential RF input | Accepts ac-coupled VCO signal; RFINB requires 100 pF bypass to AGND per Figure 29 for optimal sensitivity. |
| REFIN | Reference clock input | CMOS input (threshold ≈ VDD/2); accepts 5–104 MHz crystal oscillator or buffered clock; 100 kΩ internal termination. |
| DATA / CLK / LE | 3-wire serial interface | 24-bit shift register control; MSB-first loading; LE edge triggers latch selection (Function, A/B, R, Initialization). |
| CE | Chip enable | Active-low hardware power-down; places CP in high-Z state and disables internal clocks to reduce leakage. |
| MUXOUT | Multiplexed diagnostic output | Selectable between lock detect, scaled RF, or scaled REFIN; enables real-time PLL status monitoring without test points. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable dual-modulus prescaler | Supports 8/9, 16/17, 32/33, 64/65 ratios - enables wide N-divider range while maintaining PFD frequency within 55 MHz limit. |
| Separate VP supply pin | Allows VP = 6 V while AVDD = 3 V - extends VCO tuning range by >2× versus single-supply architectures. |
| Analog + digital lock detect | Dual-output lock indication improves system reliability: analog comparator detects loop stability; digital flag simplifies FPGA/MCU polling. |
| Antibacklash pulse width control | Reduces reference spurs caused by PFD dead-zone; adjustable via register bits to match specific loop filter dynamics. |
| Hardware/software power-down | CE pin provides immediate shutdown; F2 bit enables controlled sleep mode - reduces current to 1 µA typical for intermittent operation. |
Applications
| GSM Base Station Transmitter | Wireless Handset Local Oscillator |
|---|---|
|
Use Scenario: Generating stable 900 MHz or 1800 MHz LO signals for upconversion in macrocell BTS power amplifiers. IC Role / Device Role / Timing Role: PLL-based frequency synthesizer providing low-phase-noise LO with fast lock time (<400 µs typical) and robust spurious performance (−97 dBc). Use Value: Enables compliant EVM and ACLR in 3GPP-compliant transmitters using external VCO and loop filter optimized for 20 kHz bandwidth. |
Use Scenario: Providing channel-select LO in dual-band GSM/DCS handsets with tight PCB space and thermal constraints. IC Role / Device Role / Timing Role: Compact TSSOP-16 synthesizer driving integrated SiGe VCO; supports 3 V operation with VP = 6 V for full band coverage. Use Value: Reduces bill-of-materials by eliminating discrete level-shifting circuitry while meeting −40°C to +85°C environmental requirements. |
| Wireless LAN Frequency Planning | Communications Test Equipment LO |
|
Use Scenario: Synthesizing precise 2.4 GHz or 5.8 GHz LOs for WLAN transceivers requiring agile channel switching. IC Role / Device Role / Timing Role: Programmable N-divider enables rapid frequency reconfiguration via SPI; MUXOUT monitors lock status during hopping sequences. Use Value: Achieves <100 µs frequency settling with minimal reference spurs (−91 dBc at 200 kHz offset), supporting IEEE 802.11a/g/j standards. |
Use Scenario: Serving as core LO generator in spectrum analyzers and signal generators needing wideband, low-noise synthesis. IC Role / Device Role / Timing Role: High-frequency RF input (550 MHz) and flexible prescaler allow integration into multi-octave synthesizer chains with external mixers. Use Value: Delivers −91 dBc/Hz phase noise at 1 kHz offset (900 MHz output), meeting metrology-grade spectral purity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF PLL synthesizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADF4111BRU-REEL | Higher RF input range: 80–1200 MHz; identical pinout and register map; same TSSOP-16 package. | Supports PCS/DCS/CDMA bands beyond ADF4110BRU-REEL's 550 MHz limit; requires no layout change but higher current draw (5.5 mA max). | Select when VCO output exceeds 550 MHz; retains full software compatibility and evaluation board reuse (EV-ADF411XSD1Z). |
| LMX2531LQ1520E/NOPB | Integrated VCO; 2.2–2.5 GHz range; different 32-pin QFN package; SPI interface only (no CE pin). | Eliminates external VCO and loop filter components; not pin-compatible; requires new PCB layout and firmware adaptation. | Choose for space-constrained designs where integration outweighs flexibility; not suitable for drop-in replacement or existing ADF4110BRU-REEL layouts. |
Compared with ADF4110BRU-REEL, ADF4111BRU-REEL offers extended RF range without altering footprint or control logic, while LMX2531LQ1520E/NOPB trades layout compatibility for monolithic integration-making the former ideal for band upgrades and the latter for greenfield compact RF modules.
Availability
ADF4110BRU-REEL is available at Aetrix Electronics and suitable for GSM base station transmitters, wireless handsets, and WLAN equipment requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for ADF4110BRU-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 communications, industrial, and automotive markets with precision signal processing solutions.
The ADF4110BRU-REEL belongs to the ADF411x family of integer-N PLL synthesizers designed specifically for wireless infrastructure and handset LO generation, emphasizing low phase noise, flexible power supply architecture, and robust lock detection.
FAQ
What is the maximum RF input frequency supported by the ADF4110BRU-REEL?
The ADF4110BRU-REEL supports an RF input frequency range of 50 MHz to 550 MHz when operated at 3 V supply. At 5 V, the lower limit remains 50 MHz but the upper limit stays at 550 MHz per Table 1. This makes ADF4110BRU-REEL suitable for UHF bands including GSM900 and DCS1800 transmitter LO paths.
Does the ADF4110BRU-REEL require an external loop filter?
Yes, the ADF4110BRU-REEL requires an external passive loop filter between its CP pin and the VCO tuning input. The IC contains only the PFD, charge pump, and dividers; loop filter design determines phase margin, lock time, and spurious suppression. ADF4110BRU-REEL does not integrate filtering components.
Can the ADF4110BRU-REEL operate with separate analog and digital supply voltages?
No - the ADF4110BRU-REEL requires AVDD and DVDD to be tied together (same voltage, 2.7–5.5 V), as specified in Table 5 and Figure 25. However, it does provide a separate VP supply pin for the charge pump, which may be set higher (up to 6.0 V) to extend VCO tuning range independently.
How is lock detection implemented in the ADF4110BRU-REEL?
The ADF4110BRU-REEL provides dual lock detection: an analog lock detect output (LOCK pin) based on PFD phase error comparison, and a digital lock flag accessible via the Function Latch register. Both signals indicate stable PLL lock; the analog output drives external LEDs or MCU interrupts, while the digital flag supports register-polling architectures.
What package type is used for the ADF4110BRU-REEL?
The ADF4110BRU-REEL is supplied in a 16-lead TSSOP package (JEDEC MO-153) with exposed thermal pad, as confirmed in Figure 3 and the Ordering Guide of Rev. F datasheet. The "RU" suffix explicitly denotes the TSSOP variant, distinguishing it from the LFCSP option (e.g., ADF4110BCPZ-REEL).
ADF4110BRU-REEL 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:
- 550MHz
- 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
ADF4110BRU-REEL FAQ
1.How can I place an order for ADF4110BRU-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF4110BRU-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 ADF4110BRU-REEL reliable?
The price and inventory of ADF4110BRU-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF4110BRU-REEL is usually 5 days.
3.What payment methods are accepted for ADF4110BRU-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF4110BRU-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF4110BRU-REEL?
ADF4110BRU-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF4110BRU-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 ADF4110BRU-REEL?
For technical support, including ADF4110BRU-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF4110BRU-REEL requirements.
6.How does Aetrix verify that ADF4110BRU-REEL is sourced from the original manufacturer or authorized distributors?
All ADF4110BRU-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 ADF4110BRU-REEL meets industry standards.
7.What is the process for return or replacement of ADF4110BRU-REEL?
All ADF4110BRU-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADF4110BRU-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 ADF4110BRU-REEL part is unused and in its original packaging.
Return procedure for ADF4110BRU-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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