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Analog Devices Inc. ADF4001BRU-REEL7
- Part No.:
- ADF4001BRU-REEL7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADF4001BRU-REEL7.pdf
- Description:
- IC CLOCK GENERATOR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,817
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Product details
Overview
ADF4001BRU-REEL7 from Analog Devices is a 200 MHz bandwidth PLL clock generator IC used as the digital phase-frequency detector (PFD) and programmable charge pump core in frequency synthesis loops. It supports 5–200 MHz RF input, 5–104 MHz reference input, 2.7–5.5 V dual supply, and delivers ultralow phase noise (–99 dBc/Hz @ 1 kHz offset). It enables low-jitter clock generation in telecom timing systems.
For engineers reviewing the ADF4001BRU-REEL7 datasheet, ADF4001BRU-REEL7 pinout, ADF4001BRU-REEL7 application, or ADF4001BRU-REEL7 equivalent, this page provides verified functional context, validated TSSOP-16 pin mapping, confirmed 13-bit N / 14-bit R counter architecture, lock detect implementation details, and real-world substitution guidance for PLL design.
Technical Context
The ADF4001BRU-REEL7 integrates a low-noise digital PFD, precision charge pump with dual programmable current settings (625 µA–5 mA), 13-bit N counter (division ratio 1–8191), and 14-bit R counter (1–16383). Its separate VP supply (up to 6.0 V) extends tuning voltage range in 5 V systems without compromising analog ground integrity.
It features hardware/software power-down modes, analog and digital lock detect outputs, 3-wire serial interface (CLK/DATA/LE), and MUXOUT multiplexer supporting lock detect, scaled RF, or scaled reference access. Timing compliance includes 10 ns setup/hold on DATA-to-CLOCK and 20 ns LE pulsewidth minimum.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Input Frequency | 10–200 MHz (5 V operation); enables direct interfacing with VCOs up to 200 MHz output |
| Reference Input Frequency | 5–104 MHz; supports crystal oscillators, TTL/CMOS sources, or AC-coupled signals |
| Phase Detector Max Frequency | 55 MHz; defines maximum PFD comparison rate for stable loop dynamics |
| Charge Pump Current | Programmable 625 µA–5 mA (typ); dual-setting via CPI1–CPI6 bits enables fastlock transient response |
| Phase Noise Floor | –153 dBc/Hz @ 1 MHz PFD frequency; critical for minimizing jitter in SONET/ATM clock recovery |
| Supply Voltage Range | AVDD/DVDD = 2.7–5.5 V; VP ≥ AVDD up to 6.0 V; allows independent tuning rail for extended VCO range |
| Operating Temperature | –40°C to +85°C (B version); qualified for industrial telecom infrastructure environments |
Pinout & Package
ADF4001BRU-REEL7 is packaged in a 16-lead TSSOP (RU suffix), RoHS-compliant, with exposed pad connected to AGND. Pinout matches Analog Devices' official RU package drawing (02569-003).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RSET | Charge pump current reference | Resistor tie to CPGND sets ICP max; 4.7 kΩ yields 5 mA typical sink/source |
| CP | Charge pump output | Drives external loop filter; three-state capable via function latch bit F3 |
| CPGND | Charge pump ground return | Separate analog ground path prevents noise coupling into PFD/CP circuitry |
| RFINA / RFINB | Differential RF input to N counter | AC-coupled small-signal inputs; RFINB requires 100 pF bypass to AGND |
| REFIN | Reference clock input | CMOS-compatible; accepts DC-coupled (0–VDD) or AC-coupled (–5 dBm min) signals |
| CE | Chip enable | Asynchronous power-down control; low = immediate disable, CP forced to high-Z |
| CLK / DATA / LE | 3-wire serial interface | 24-bit MSB-first shift register; LE rising edge latches data to R/N/function/initialization latches |
| MUXOUT | Multiplexed output | Selectable via M3/M2/M1: digital lock detect, N-divider, R-divider, or open-drain analog lock detect |
Key Features
| Feature | Design Value |
|---|---|
| Separate VP supply rail | Enables 5 V tuning voltage in 3 V system designs, extending VCO/VCXO tuning range without level-shifting |
| Dual programmable charge pump currents | Supports Fastlock Mode 2: high-current setting (e.g., 5 mA) auto-reverts to low-current (e.g., 2.5 mA) after timer-controlled timeout |
| Hardware/software power-down | CE pin provides immediate shutdown; PD1/PD2 bits enable synchronous (PFD-gated) or asynchronous power-down |
| Analog + digital lock detect | Digital LD is CMOS-level active-high; analog LD is N-channel open-drain requiring 10 kΩ pull-up for precise phase-error monitoring |
| Antibacklash pulse control | ABP1/ABP2 bits configure PFD dead-zone compensation (1.3–6.0 ns) to minimize reference spurs and phase noise |
Applications
| SONET/SDH Line Cards | DSLAM Timing Modules |
|---|---|
Use Scenario: Generating low-jitter 155.52 MHz or 622.08 MHz clocks for OC-3/OC-12 framer interfaces. IC Role / Device Role / Timing Role: Core PFD/charge pump in PLL loop with external VCXO and loop filter; provides phase alignment and stability against temperature drift. Use Value: –99 dBc/Hz phase noise @ 1 kHz offset ensures BER < 1E–12 in optical transport; programmable R/N counters support exact frequency synthesis per ITU-T G.813. |
Use Scenario: Providing synchronized 2.048 MHz E1 clock and 16.384 MHz ADSL line clock in multi-port DSL aggregation units. IC Role / Device Role / Timing Role: Reference divider and feedback divider controller; interfaces with 10 MHz TCXO and wide-tuning VCO for frequency translation. Use Value: Dual charge pump current settings reduce lock time from >10 ms to <2 ms during channel reconfiguration, improving service provisioning speed. |
| ATM Switch Fabric Clocking | Wireless Base Station Synthesizers |
Use Scenario: Delivering clean 53.125 MHz or 156.25 MHz clocks to ATM cell processors and SAR engines in core switches. IC Role / Device Role / Timing Role: Low-noise clock generator in cascaded PLL architecture; REFIN sourced from oven-controlled oscillator (OCXO). Use Value: –153 dBc/Hz phase noise floor at 1 MHz offset suppresses adjacent-channel interference in high-density switching fabrics. |
Use Scenario: Implementing frequency-agile local oscillator (LO) synthesis for 2.4 GHz/5 GHz RF transceivers in LTE femtocells. IC Role / Device Role / Timing Role: Integer-N PLL core driving external VCO; N counter set dynamically via SPI to hop between carrier frequencies. Use Value: 200 MHz RF input bandwidth and 55 MHz PFD limit support wide-loop bandwidths (>100 kHz), enabling fast settling for TDD burst-mode operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PLL clock generator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADF4113BRUZ | Higher RF input (2.5 GHz), integrated prescaler, but no separate VP supply; 20-lead LFCSP only | Targets RF synthesizer applications (e.g., microwave LO), not low-noise clock generation | Select ADF4113BRUZ only when >200 MHz RF input or integrated ÷2 prescaler is required; not drop-in for ADF4001BRU-REEL7 clock-smoothing use cases |
| LMX2531LQ1570E/NOPB | Integrated VCO, fractional-N capability, 2.5 GHz max output; no RFINA/RFINB differential input | Suitable for compact single-chip synthesizers, not external-VCO PLLs requiring ultralow phase noise | Choose LMX2531LQ1570E/NOPB for space-constrained designs needing integrated VCO; ADF4001BRU-REEL7 remains preferred for discrete VCO + ultra-low-noise timing |
Compared with ADF4113BRUZ and LMX2531LQ1570E/NOPB, the ADF4001BRU-REEL7 uniquely balances 200 MHz RF bandwidth, separate VP rail for extended tuning, and –99 dBc/Hz phase noise-making it optimal for telecom clock smoothing where external VCO selection and noise floor are critical.
Availability
ADF4001BRU-REEL7 is available at Aetrix Electronics and suitable for SONET/SDH line cards, DSLAM timing modules, and ATM switch fabric clocking requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for ADF4001BRU-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, Inc. is a global leader in high-performance analog, mixed-signal, and DSP technologies, serving precision instrumentation, industrial automation, and communications markets since 1965.
The ADF4001BRU-REEL7 belongs to Analog Devices' clock generator and PLL synthesizer product line, designed specifically for low-phase-noise, programmable reference and feedback division in telecom infrastructure timing applications.
FAQ
What is the maximum RF input frequency supported by the ADF4001BRU-REEL7?
The ADF4001BRU-REEL7 supports RF input frequencies up to 200 MHz under 5 V operation (AVDD = DVDD = 5 V). At 3 V supply, the upper limit is 165 MHz. This specification is confirmed in the "RF CHARACTERISTICS (5 V)" table of the Rev. B datasheet, with test conditions specifying fRF = 200 MHz, PFD = 200 kHz, and loop bandwidth = 20 kHz.
Does the ADF4001BRU-REEL7 support both analog and digital lock detect outputs?
Yes, the ADF4001BRU-REEL7 provides both analog and digital lock detect functionality. Digital lock detect is a CMOS-level active-high signal available on MUXOUT when configured via M3–M1 = 001. Analog lock detect is an N-channel open-drain output (also on MUXOUT, M3–M1 = 101) requiring an external 10 kΩ pull-up resistor and asserting narrow low-going pulses upon lock acquisition.
How is charge pump current programmed on the ADF4001BRU-REEL7?
Charge pump current is programmed using two independent 3-bit fields: CPI1–CPI3 for Current Setting 1 and CPI4–CPI6 for Current Setting 2. With RSET = 4.7 kΩ, these bits select values from 625 µA to 5 mA in eight discrete steps. The selected current is applied based on CP gain bit state and Fastlock mode configuration, as defined in Table V of the datasheet.
What package type is used for the ADF4001BRU-REEL7?
The ADF4001BRU-REEL7 uses a 16-lead TSSOP package (RU suffix), with exposed pad (EPAD) that must be soldered to AGND for thermal and electrical performance. This matches the "TSSOP" pin configuration shown on page 4 of the Rev. B datasheet and is distinct from the 20-lead LFCSP variant (ADF4001BCPZ-REEL7).
Can the ADF4001BRU-REEL7 operate with different analog and digital supply voltages?
No-the ADF4001BRU-REEL7 requires AVDD and DVDD to be equal (2.7–5.5 V), as explicitly stated in the "POWER SUPPLIES" section and Absolute Maximum Ratings. However, VP may differ: it must be ≥ AVDD and ≤ 6.0 V, enabling extended tuning voltage for external VCOs while maintaining clean analog biasing.
ADF4001BRU-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 Generator (RF)
- PLL:
- Yes
- Input:
- CMOS, TTL
- Output:
- Clock
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 2:1
- Differential - Input:Output:
- Yes/No
- Frequency - Max:
- 200MHz
- 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
ADF4001BRU-REEL7 FAQ
1.How can I place an order for ADF4001BRU-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF4001BRU-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 ADF4001BRU-REEL7 reliable?
The price and inventory of ADF4001BRU-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF4001BRU-REEL7 is usually 5 days.
3.What payment methods are accepted for ADF4001BRU-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF4001BRU-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF4001BRU-REEL7?
ADF4001BRU-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF4001BRU-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 ADF4001BRU-REEL7?
For technical support, including ADF4001BRU-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF4001BRU-REEL7 requirements.
6.How does Aetrix verify that ADF4001BRU-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADF4001BRU-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 ADF4001BRU-REEL7 meets industry standards.
7.What is the process for return or replacement of ADF4001BRU-REEL7?
All ADF4001BRU-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADF4001BRU-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 ADF4001BRU-REEL7 part is unused and in its original packaging.
Return procedure for ADF4001BRU-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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