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Analog Devices Inc. ADF4350BCPZ-RL7
- Part No.:
- ADF4350BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADF4350BCPZ-RL7.pdf
- Description:
- IC FANOUT DIST 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,418
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Product details
Overview
ADF4350BCPZ-RL7 from Analog Devices is a wideband fractional-N/integer-N PLL frequency synthesizer with integrated VCO, operating from 137.5 MHz to 4400 MHz. It features programmable RF output division (÷1/2/4/8/16), <0.4 ps rms jitter, 3-wire serial interface, and dual-mode lock detection. Used in wireless infrastructure base stations for W-CDMA and WiMAX local oscillator generation.
For engineers reviewing the ADF4350BCPZ-RL7 datasheet, ADF4350BCPZ-RL7 pinout, ADF4350BCPZ-RL7 application, or ADF4350BCPZ-RL7 equivalent, key selection criteria include VCO tuning voltage range (0.5–2.5 V), phase noise at 100 kHz offset (−114 dBc/Hz @ 2.2 GHz), integrated RMS jitter (0.5 ps), and support for fast-lock switched-bandwidth mode.
Technical Context
The ADF4350BCPZ-RL7 implements a third-order fractional interpolator with 12-bit FRAC/MOD registers to suppress fractional spurs, and supports both integer-N and fractional-N synthesis via configurable prescalers (4/5 or 8/9). Its VCO core comprises three multi-band oscillators covering 2200–4400 MHz fundamental range.
It integrates dual RF outputs (RFOUTA± and RFOUTB±), each programmable in 3 dB steps from −4 dBm to +5 dBm, with independent RF mute control via PDBRF pin or register. The charge pump current (ICP) is set by external RSET (2.7–10 kΩ), delivering 0.312–5 mA with ≤2% sink/source matching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 137.5 MHz to 4400 MHz - covers GSM, W-CDMA, WiMAX, and CATV bands without external multipliers |
| VCO Fundamental Range | 2200 MHz to 4400 MHz - enables direct synthesis of high-frequency LOs with low phase noise |
| RMS Jitter | 0.5 ps - ensures timing integrity in high-speed data converters and SERDES clocking |
| Phase Noise @ 100 kHz | −114 dBc/Hz @ 2.2 GHz - meets stringent spectral purity requirements for cellular basestation transceivers |
| Supply Voltage | 3.0 V to 3.6 V - single-rail operation compatible with standard LDOs and PMICs in RF subsystems |
| Logic Interface | 1.8 V CMOS - allows direct interfacing with low-voltage FPGAs and microcontrollers without level shifters |
| Power Consumption | 27 mA typical (AVDD/DVDD/VVCO = 3.3 V) - optimized for thermally constrained RF modules |
Pinout & Package
The ADF4350BCPZ-RL7 is housed in a 32-lead 5 mm × 5 mm LFCSP package with exposed paddle (EP), requiring soldered thermal connection to PCB ground plane for thermal management and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK, DATA, LE | 3-wire serial interface inputs | Enable register programming with 32-bit word; timing-critical (t1 ≥ 20 ns setup, t4/t5 ≥ 25 ns pulse width) |
| RFOUTA+/RFOUTA− | Differential main RF output | Programmable −4 dBm to +5 dBm; supports fundamental or ÷2/÷4/÷8/÷16 outputs |
| RFOUTB+/RFOUTB− | Differential auxiliary RF output | Independent power control; can be powered down when unused to reduce current draw |
| VTUNE | VCO tuning voltage input | 0.5–2.5 V range; connects to external loop filter output; determines instantaneous VCO frequency |
| PDBRF | RF output mute control | Hardware pin enables immediate RF shutdown; also controllable via register for software-defined muting |
| LD | Digital lock detect output | CMOS logic-high indicates stable PLL lock; used for system synchronization and fault monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Fractional-N synthesis with third-order interpolation | Reduces fractional spurs below −70 dBc while enabling 1 Hz frequency resolution |
| Switched bandwidth fast-lock mode | Reduces lock time by >50% during frequency hops (e.g., 100 MHz jump in <500 µs with CSR enabled) |
| Dual RF outputs with independent mute control | Enables redundant LO paths or I/Q signal generation without external splitters or switches |
| Programmable output power (−4 dBm to +5 dBm) | Eliminates need for external attenuators or amplifiers in impedance-matched 50 Ω systems |
| Analog + digital lock detect | Provides redundancy: analog LD monitors loop filter voltage; digital LD validates N/R counter alignment |
Applications
| Wireless Infrastructure Base Station | Test & Measurement Signal Generator |
|---|---|
Use Scenario: Generating local oscillator signals for up/down-conversion in macrocell BTS supporting W-CDMA and TD-SCDMA standards. IC Role / Device Role / Timing Role: Primary wideband synthesizer providing tunable, low-phase-noise LO to mixer stages. Use Value: Integrated VCO eliminates discrete VCO design effort; 137.5–4400 MHz coverage avoids band-switching hardware. | Use Scenario: Programmable RF source in benchtop spectrum analyzers and vector signal generators requiring rapid frequency agility. IC Role / Device Role / Timing Role: Core frequency synthesis engine delivering calibrated, repeatable output with sub-Hz resolution. Use Value: Fast-lock mode and cycle-slip reduction enable <500 µs settling for automated test sequences. |
| WiMAX/CATV Equipment | Clock Generation for High-Speed ADCs |
Use Scenario: LO generation in WiMAX subscriber units and CATV headend modulators operating in 2.3–2.7 GHz and 50–1000 MHz bands. IC Role / Device Role / Timing Role: Wideband synthesizer driving quadrature modulators with precise phase alignment. Use Value: Dual RF outputs support I/Q modulation paths; harmonic content ≤−10 dBc reduces filtering complexity. | Use Scenario: Low-jitter sampling clock source for 14-bit, 250 MSPS analog-to-digital converters in medical imaging systems. IC Role / Device Role / Timing Role: Jitter-optimized clock generator feeding ADC sampling clock input. Use Value: 0.5 ps rms jitter directly translates to >10.5 ENOB at Nyquist, meeting clinical-grade SNR requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband synthesizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADF4351BCPZ-RL7 | Same architecture but adds integrated 3.3 V LDO; eliminates external AVDD regulator; higher quiescent current (32 mA vs. 27 mA) | Better suited for space-constrained designs where supply rail consolidation is critical | Select ADF4351BCPZ-RL7 if board area is limited and system already uses 5 V input; otherwise retain ADF4350BCPZ-RL7 for lower power and cost |
| LMS8001-SYNTH | Lower max frequency (3.8 GHz), no integrated VCO (requires external VCO), SPI interface only (no 3-wire option) | Targeted at SDR platforms with flexible VCO selection; lacks fast-lock and cycle-slip reduction | Choose LMS8001-SYNTH only when VCO customization or multi-chip synchronization is required; ADF4350BCPZ-RL7 offers superior integration and jitter performance |
Compared with ADF4351BCPZ-RL7, the ADF4350BCPZ-RL7 provides lower power consumption and simpler power sequencing, while the LMS8001-SYNTH requires external VCO design effort and delivers higher integrated jitter-making ADF4350BCPZ-RL7 the preferred choice for turnkey wideband LO generation.
Availability
ADF4350BCPZ-RL7 is available at Aetrix Electronics and suitable for wireless infrastructure, test equipment, and high-speed data converter clocking requiring stable component supply across extended temperature ranges (−40°C to +85°C).
Supply support for ADF4350BCPZ-RL7 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and RF ICs for precision signal processing applications.
The ADF4350BCPZ-RL7 belongs to Analog Devices' RF & Microwave Synthesizer product line, designed specifically for wideband, low-phase-noise frequency generation in communications infrastructure and instrumentation.
FAQ
What is the minimum reference input frequency supported by the ADF4350BCPZ-RL7?
The ADF4350BCPZ-RL7 supports a minimum reference input frequency of 10 MHz, provided the input slew rate exceeds 21 V/µs. Below 10 MHz, signal integrity degrades due to internal comparator limitations; for sub-10 MHz references, external conditioning or frequency multiplication is required before applying to REFIN.
Does the ADF4350BCPZ-RL7 require an external loop filter?
Yes, the ADF4350BCPZ-RL7 requires an external passive loop filter between CPOUT and VTUNE. The device does not integrate loop filter components; filter topology (e.g., third-order passive) must be selected based on desired loop bandwidth, phase margin, and reference spur suppression per application requirements.
Can the ADF4350BCPZ-RL7 generate frequencies below 137.5 MHz?
No-the ADF4350BCPZ-RL7's lowest guaranteed output is 137.5 MHz, achieved by dividing its 2200 MHz minimum VCO frequency by 16. Frequencies below this require external frequency division or a different synthesizer architecture; the internal dividers do not support ratios beyond ÷16.
How is the charge pump current configured on the ADF4350BCPZ-RL7?
The ADF4350BCPZ-RL7 charge pump current (ICP) is set by an external resistor (RSET) connected between the RSET pin and AGND. With RSET = 5.1 kΩ, ICP = 5 mA (high value); scaling follows ICP = 25.5 / RSET (kΩ) mA. RSET must be within 2.7–10 kΩ for valid operation and ≤2% current matching.
Is the ADF4350BCPZ-RL7 RoHS compliant and lead-free?
Yes, the ADF4350BCPZ-RL7 is RoHS compliant and lead-free. Its LFCSP package uses matte tin (Sn) termination, and the device meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) with peak reflow temperature of 260°C for 40 seconds.
ADF4350BCPZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Fanout Distribution, Fractional N, Integer N, Clock/Frequency Synthesizer (RF)
- PLL:
- Yes
- Input:
- CMOS, TTL
- Output:
- Clock
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:2
- Differential - Input:Output:
- No/No
- Frequency - Max:
- 4.4GHz
- Divider/Multiplier:
- Yes/Yes
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-LFCSP-WQ (5x5)
ADF4350BCPZ-RL7 FAQ
1.How can I place an order for ADF4350BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF4350BCPZ-RL7 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 ADF4350BCPZ-RL7 reliable?
The price and inventory of ADF4350BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF4350BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADF4350BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF4350BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF4350BCPZ-RL7?
ADF4350BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF4350BCPZ-RL7 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 ADF4350BCPZ-RL7?
For technical support, including ADF4350BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF4350BCPZ-RL7 requirements.
6.How does Aetrix verify that ADF4350BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADF4350BCPZ-RL7 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 ADF4350BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADF4350BCPZ-RL7?
All ADF4350BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADF4350BCPZ-RL7, 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 ADF4350BCPZ-RL7 part is unused and in its original packaging.
Return procedure for ADF4350BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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