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Analog Devices Inc. ADF4212LBCPZ-RL7
- Part No.:
- ADF4212LBCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 20-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADF4212LBCPZ-RL7.pdf
- Description:
- IC CLK/FREQ SYNTH 20LFCSP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADF4212LBCPZ-RL7 from Analog Devices is a dual low-power PLL frequency synthesizer designed for local oscillator (LO) generation in RF and IF signal paths of wireless transceivers. It supports RF input up to 2.4 GHz and IF input up to 1.0 GHz, operates from 2.7 V to 3.3 V, delivers total supply current of 7.5 mA, and features programmable charge pump currents and a 3-wire serial interface. It enables precise LO synthesis in GSM, WCDMA, and WLAN baseband architectures.
For engineers reviewing the ADF4212LBCPZ-RL7 datasheet, ADF4212LBCPZ-RL7 pinout, ADF4212LBCPZ-RL7 application, or ADF4212LBCPZ-RL7 equivalent, key selection criteria include dual-channel independent N-divider architecture, separate VP1/VP2 tuning voltage supplies up to 5.5 V, fastlock mode support, analog/digital lock detect outputs, and compatibility with external VCOs requiring wide tuning range and low phase noise performance.
Technical Context
The ADF4212LBCPZ-RL7 integrates two fully independent PLL channels - RF and IF - each with its own phase frequency detector (PFD), charge pump (CPRF/CPIF), A/B counters (6-bit/12-bit), and programmable dual-modulus prescaler (8/9, 16/17, 32/33, 64/65). The 15-bit R counter enables flexible reference division from 10 MHz to 150 MHz.
It implements pulse-swallow N-divider logic (N = BP + A) per channel, supports simultaneous RF/IF lock detection via MUXOUT-configurable outputs, and allows independent power-down of RF or IF sections. The 3-wire serial interface (CLK/DATA/LE) is 1.8 V compatible and controls all on-chip registers with 22-bit data words.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Input Frequency | 0.2 GHz to 2.4 GHz - supports direct connection to VCO outputs in cellular and broadband RF front-ends |
| IF Input Frequency | 100 MHz to 1000 MHz - enables IF-stage LO synthesis for heterodyne receivers and transmitters |
| Total Supply Current | 7.5 mA typical at 3 V - enables low-power operation in battery-sensitive handheld and portable systems |
| Charge Pump Current Range | 625 µA to 5 mA programmable - allows optimization of loop filter bandwidth and phase noise trade-offs |
| Reference Input Frequency | 10 MHz to 150 MHz - accommodates crystal oscillators, TCXOs, and clock generators across multiple wireless standards |
| Phase Detector Max Frequency | 75 MHz - sets upper limit for PFD comparison rate and impacts reference spur spacing and settling time |
| Operating Temperature | −40°C to +85°C - qualified for industrial and commercial wireless infrastructure applications |
Pinout & Package
ADF4212LBCPZ-RL7 is packaged in a 20-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad. Pin numbering follows top-view orientation; EP (exposed pad) must be soldered to ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VP1 | RF Charge Pump Power Supply | Provides bias for RF charge pump; supports up to 5.5 V to drive high-tuning-range VCOs without level-shifting |
| CPRF | RF Charge Pump Output | Differential ±ICP output connected to external RF loop filter driving RF VCO |
| RFIN | RF Prescaler Input | AC-coupled small-signal input accepting up to 2.4 GHz VCO output; requires >140 V/µs slew rate |
| FLO | Multiplexed Output | CMOS output selectable as RF/IF divider output, Fastlock indicator, or reference frequency scaling |
| REFIN | Reference Clock Input | CMOS-compatible input (threshold ≈ VDD/2); accepts TTL/CMOS oscillators or AC-coupled sine sources |
| DGNDIF / DGNDRF | Digital Grounds | Separate digital ground pins for IF and RF domains to minimize coupling between control and RF sections |
| AGNDIF / AGNDRF | Analog Grounds | Isolated analog grounds for IF/RF charge pumps and prescalers to preserve phase noise integrity |
| CLK / DATA / LE | 3-Wire Serial Interface | 1.8 V–compatible control bus; latches 22-bit register data on rising CLK edge when LE transitions high |
| RSET | Charge Pump Current Set | Resistor-to-ground sets max ICP (ICP = 13.5 V / RSET); nominal 2.7 kΩ yields 5 mA for both RF and IF |
| MUXOUT | Multiplexer Output | Configurable output for lock detect (digital/analog), scaled RF/IF/REF frequencies, or internal test points |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent PLL channels | Enables concurrent RF and IF LO synthesis without shared timing constraints or cross-channel interference |
| Programmable dual-modulus prescaler | Four selectable ratios (8/9, 16/17, 32/33, 64/65) per channel allow optimal N-divider configuration for target VCO frequency and phase noise |
| Separate VP1 and VP2 supplies | Supports independent tuning voltage rails up to 5.5 V - critical for driving wide-range VCOs while maintaining low-noise RF/IF separation |
| Analog and digital lock detect | Digital lock detect asserts high after three consecutive <15 ns phase errors; analog lock detect provides open-drain N-channel output for external monitoring |
| Fastlock mode | Reduces frequency settling time by dynamically adjusting PFD gain and charge pump current during acquisition |
| Low-power sleep mode | 1 µA standby current enables rapid wake-up in burst-mode communication systems such as TDMA or IoT sensor nodes |
Applications
| GSM/WCDMA Handset Transceiver | Wireless LAN Baseband Architecture |
|---|---|
Use Scenario: Dual-conversion transmitter in multi-band mobile handset supporting GSM 900/1800 and WCDMA 2100 bands. IC Role / Device Role / Timing Role: Generates RF LO (900 MHz/2140 MHz) and IF LO (540 MHz/600 MHz) simultaneously using independent RF and IF PLL channels. Use Value: Eliminates need for two discrete synthesizers; reduces BOM count and PCB area while maintaining channel isolation and low spurious emissions. |
Use Scenario: 2.4 GHz and 5 GHz dual-band Wi-Fi access point requiring agile, low-phase-noise LOs for OFDM modulation. IC Role / Device Role / Timing Role: Provides synchronized RF LOs for transmit/receive paths and IF LO for image-reject mixers in zero-IF or low-IF receiver chains. Use Value: Enables fast channel switching (<100 µs) via Fastlock mode and meets IEEE 802.11ac EVM requirements through −87 dBc/Hz @ 1 kHz offset performance. |
| Cable TV Tuner Front-End | Communications Test Equipment |
Use Scenario: Broadband CATV tuner covering 47–1002 MHz downstream band with adjacent-channel rejection requirements. IC Role / Device Role / Timing Role: Generates tunable IF LO (e.g., 44 MHz or 36 MHz) and stable reference for demodulator clock recovery. Use Value: Programmable R counter and low 10 MHz minimum REFIN enable precise channel spacing (6/8 MHz) and minimize reference spurs below −90 dBc. |
Use Scenario: Modular signal generator module requiring reconfigurable LO synthesis across 100 MHz–2.4 GHz range. IC Role / Device Role / Timing Role: Serves as core frequency engine for swept-sine, modulation, and vector signal generation functions. Use Value: Dual-channel architecture supports simultaneous carrier + offset tone generation; 3-wire interface enables seamless integration into FPGA-based control platforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual PLL frequency synthesizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADF4153AACPZ-RL7 | Single-channel PLL with integrated VCO; no IF path; lower max RF frequency (1.2 GHz) | Suitable only for single-LO systems; lacks independent IF synthesis capability | Select when space/power budget prohibits dual-channel IC and system architecture permits shared LO paths |
| LMX2531LQ1E05/NOPB | Single PLL with integrated VCO; higher max RF frequency (2.9 GHz); no separate IF channel or FLO/MUXOUT flexibility | Designed for direct RF synthesis only; no provision for IF-stage LO generation or dual-path lock monitoring | Prefer for compact, cost-sensitive designs where full dual-channel functionality is unnecessary |
Compared with ADF4212LBCPZ-RL7, the ADF4153AACPZ-RL7 reduces component count but sacrifices IF-path independence and dual-lock detection, while the LMX2531LQ1E05/NOPB offers higher RF frequency coverage but eliminates the architectural flexibility needed for heterodyne receiver/transmitter co-design.
Availability
ADF4212LBCPZ-RL7 is available at Aetrix Electronics and suitable for wireless infrastructure, cable TV tuner design, and communications test equipment requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ADF4212LBCPZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADF4212L belongs to Analog Devices' precision PLL frequency synthesizer product line, engineered specifically for dual-path LO generation in multi-standard wireless transceivers requiring low power, low phase noise, and flexible programmability.
FAQ
What is the maximum RF input frequency supported by the ADF4212LBCPZ-RL7?
The ADF4212LBCPZ-RL7 supports an RF input frequency range of 0.2 GHz to 2.4 GHz. This specification is validated under standard operating conditions (VDD = 3 V, TA = 25°C) and requires input slew rate >140 V/µs for reliable prescaler operation at the upper end of the band. The 2.4 GHz limit ensures compatibility with GSM, PCS, and WLAN RF front-ends.
Does the ADF4212LBCPZ-RL7 support independent power-down of RF and IF sections?
Yes, the ADF4212LBCPZ-RL7 supports independent power-down of the RF and IF sections via dedicated control bits in its 22-bit register map. When enabled, RF power-down reduces IDD(RF) to ≤1 µA while preserving IF functionality, and vice versa. This feature enables dynamic power management in time-division duplex (TDD) systems and battery-powered portable devices.
How is charge pump current configured on the ADF4212LBCPZ-RL7?
Charge pump current on the ADF4212LBCPZ-RL7 is set by connecting an external resistor (RSET) between the RSET pin and ground. The relationship is ICP = 13.5 V / RSET; a 2.7 kΩ resistor yields 5 mA maximum for both RF and IF charge pumps. Programmable current values (625 µA to 5 mA) are selected via register bits CP1–CP3 in the charge pump configuration word.
What package type is used for the ADF4212LBCPZ-RL7?
The ADF4212LBCPZ-RL7 uses a 20-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad. Its footprint measures 4 mm × 4 mm × 0.85 mm, and the exposed pad must be soldered to a grounded copper plane for thermal dissipation and optimal RF performance. This package replaces the TSSOP variant in the ADF4212L family for improved high-frequency stability.
Can the ADF4212LBCPZ-RL7 generate both RF and IF LO signals simultaneously?
Yes, the ADF4212LBCPZ-RL7 is explicitly designed for concurrent RF and IF LO generation. Its dual-channel architecture includes independent PFDs, charge pumps (CPRF/CPIF), A/B counters, and prescalers - allowing simultaneous synthesis of, for example, a 2.14 GHz RF LO and a 540 MHz IF LO from a common 10 MHz reference, with no functional interdependence between paths.
ADF4212LBCPZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Clock/Frequency Synthesizer (RF/IF)
- PLL:
- Yes
- Input:
- CMOS, TTL
- Output:
- Clock
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 3:1
- Differential - Input:Output:
- Yes/Yes
- Frequency - Max:
- 2.4GHz
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 2.7V ~ 3.3V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-LFCSP (4x4)
ADF4212LBCPZ-RL7 FAQ
1.How can I place an order for ADF4212LBCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF4212LBCPZ-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 ADF4212LBCPZ-RL7 reliable?
The price and inventory of ADF4212LBCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF4212LBCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADF4212LBCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF4212LBCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF4212LBCPZ-RL7?
ADF4212LBCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF4212LBCPZ-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 ADF4212LBCPZ-RL7?
For technical support, including ADF4212LBCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF4212LBCPZ-RL7 requirements.
6.How does Aetrix verify that ADF4212LBCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADF4212LBCPZ-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 ADF4212LBCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADF4212LBCPZ-RL7?
All ADF4212LBCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADF4212LBCPZ-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 ADF4212LBCPZ-RL7 part is unused and in its original packaging.
Return procedure for ADF4212LBCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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