My Inquiry
My Account
Analog Devices Inc. ADF4112BRUZ-REEL
- Part No.:
- ADF4112BRUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADF4112BRUZ-REEL.pdf
- Description:
- IC CLK/FREQ SYNTH 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,602
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADF4112BRUZ-REEL from Analog Devices is a 3.0 GHz RF PLL frequency synthesizer IC used as a local oscillator in wireless transceiver up/downconversion stages. It features a dual-modulus prescaler (8/9, 16/17, 32/33, 64/65), programmable charge pump current (625 µA to 5 mA), 2.7 V to 5.5 V supply range, and 3-wire serial interface. It supports GSM, WCDMA, and wireless LAN base station applications.
For engineers reviewing the ADF4112BRUZ-REEL datasheet, ADF4112BRUZ-REEL pinout, ADF4112BRUZ-REEL application, or ADF4112BRUZ-REEL equivalent, key selection criteria include RF input frequency range (0.1–3.0 GHz at 3 V), phase noise performance (−90 dBc/Hz @ 1 kHz offset, 900 MHz), lock detect capability, and VP-supplied extended tuning voltage support for 3 V systems.
Technical Context
The ADF4112BRUZ-REEL implements a digital phase-frequency detector (PFD) with precision charge pump, 14-bit R counter, 6-bit A counter, and 13-bit B counter driving a P/P+1 dual-modulus prescaler to realize N = BP + A division. Its architecture enables fine frequency resolution and fast lock times in closed-loop PLL configurations with external loop filters and VCOs.
It supports hardware/software power-down modes, analog and digital lock detection, and programmable antibacklash pulse width. The separate VP supply (≥AVDD, up to 6.0 V) decouples charge pump headroom from core logic voltage-critical for wide-tuning-range VCO control in 3 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Input Frequency | 0.1–3.0 GHz (3 V operation); enables direct synthesis for UMTS/WCDMA bands without prescaler division overhead. |
| Phase Noise | −90 dBc/Hz @ 1 kHz offset (900 MHz output, 200 kHz PFD); meets stringent spectral purity requirements in cellular infrastructure. |
| Charge Pump Current | Programmable 625 µA–5 mA (RSET = 2.7–10 kΩ); allows optimization of loop filter bandwidth and transient response. |
| PFD Max Frequency | 55 MHz; supports high reference frequencies for reduced N-divider spurs and improved channel spacing resolution. |
| Supply Range | 2.7–5.5 V (AVDD/DVDD); single-supply operation simplifies power design across industrial temperature range (−40°C to +85°C). |
| Interface | 3-wire serial (DATA/CLK/LE); minimal GPIO usage and deterministic timing (t1 ≥10 ns setup) for reliable microcontroller integration. |
| Lock Detection | Analog + digital lock detect outputs; provides system-level PLL status verification without external monitoring circuitry. |
Pinout & Package
TSSOP-16 package with exposed paddle (connected to AGND). Pin count and layout match JEDEC MO-153 standard; thermal resistance θJA = 150.4°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RSET | Charge pump current setting | Resistor-to-ground sets ICPmax via ICP = 5.23/RSET (kΩ); 4.7 kΩ yields 5 mA nominal for wide VCO tuning range. |
| CP | Charge pump output | Drives external loop filter; ±ICP sourcing/sinking capability enables bidirectional VCO tuning voltage control. |
| CPGND | Charge pump ground return | Dedicated low-noise ground path isolates sensitive analog CP current from digital switching noise. |
| RFINA/RFINB | Differential RF input | Accepts ac-coupled VCO signal; differential topology improves common-mode noise rejection in high-density RF layouts. |
| REFIN | Reference clock input | CMOS-compatible (VDD/2 threshold); supports crystal oscillators or buffered clock sources up to 104 MHz. |
| CE | Chip enable | Active-low control for full device power-down; places CP in high-Z state to prevent loop filter disturbance during sleep. |
| MUXOUT | Multiplexed diagnostic output | Selectable between lock detect, scaled RF, or scaled reference-enables real-time PLL health monitoring. |
| VP | Charge pump supply | Independent rail (AVDD ≤ VP ≤ 6.0 V) extends tuning voltage headroom beyond core supply, critical for 3 V systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-modulus prescaler | Configurable 8/9, 16/17, 32/33, or 64/65 ratio-enables wide N-divider range while maintaining high PFD frequency for low phase noise. |
| Separate VP supply | Supports up to 6 V charge pump rail on 3 V AVDD/DVDD systems-enables direct drive of high-voltage-tuning VCOs without level-shifting. |
| Programmable antibacklash pulse | Adjustable width eliminates dead-zone-induced reference spurs in PFD output-improves spectral purity near carrier. |
| Hardware/software power-down | CE pin + F2 register bit allow flexible low-power sequencing-reduces quiescent current to 1 µA typical in sleep mode. |
| 3-wire serial interface | 24-bit shift register with MSB-first loading and control-bit–selected latch mapping-ensures deterministic register programming timing. |
Applications
| GSM Base Station Transmitter | WCDMA Femtocell 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: Primary frequency synthesizer providing phase-locked LO with <±1 ppm accuracy and low close-in phase noise. Use Value: −90 dBc/Hz phase noise @ 1 kHz offset ensures adjacent-channel leakage ratio (ACLR) compliance per 3GPP TS 34.121. |
Use Scenario: Providing tunable 1960 MHz LO for compact indoor femtocell transceivers operating in Band I. IC Role / Device Role / Timing Role: Integrated PLL synthesizer with integrated lock detect, eliminating need for external monitoring circuitry. Use Value: Programmable charge pump current (625 µA–5 mA) allows loop filter optimization for fast lock time (<400 µs) and stability across temperature. |
| Wireless LAN 5 GHz Band Synthesizer | Communications Test Equipment LO Source |
Use Scenario: Generating 5.15–5.825 GHz LO (via external ×2 doubler) for 802.11a/n/ac transceivers. IC Role / Device Role / Timing Role: High-frequency synthesizer front-end driving broadband VCO with extended tuning voltage via VP pin. Use Value: 0.1–3.0 GHz RF input range and 64/65 prescaler option support wideband VCO designs with fine channel spacing (e.g., 5 MHz). |
Use Scenario: Serving as agile LO engine in vector signal analyzers requiring rapid frequency hopping and low spurious content. IC Role / Device Role / Timing Role: Precision frequency reference generator with programmable R/A/B counters and dual lock detect outputs. Use Value: Analog + digital lock detect signals enable automated test sequence validation without firmware polling delays. |
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 interface only (no 3-wire), −223 dBc/Hz normalized phase noise floor. | Targeted at newer 5G FR1 infrastructure; requires PCB redesign due to LFCSP-24 package and SPI-only interface. | Choose for higher-frequency operation (>3 GHz) and lower integrated phase noise; not drop-in compatible. |
| LMX2531LQ1580E/NOPB | Integrated VCO (1.58 GHz), fractional-N capability, 3.3 V only, no VP pin, −226 dBc/Hz normalized noise floor. | Suitable for compact single-chip LO solutions where external VCO is undesirable; lacks prescaler flexibility and VP headroom. | Choose when board space is constrained and fixed-band operation suffices; requires different loop filter design. |
Compared with ADF4112BRUZ-REEL, the ADF4153A offers higher frequency and better noise but demands SPI interface redesign and LFCSP assembly, while the LMX2531LQ1580E integrates the VCO at the cost of prescaler configurability and tuning voltage flexibility-making ADF4112BRUZ-REEL optimal for discrete VCO-based 3G/4G infrastructure with legacy 3-wire control.
Availability
ADF4112BRUZ-REEL is available at Aetrix Electronics and suitable for GSM base stations, WCDMA femtocells, and wireless LAN equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial deployment.
Supply support for ADF4112BRUZ-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 ADF411x family was designed specifically for wireless infrastructure LO generation-emphasizing low phase noise, flexible prescaling, and robust lock detection in temperature-varying base station environments.
FAQ
What is the maximum RF input frequency supported by the ADF4112BRUZ-REEL?
The ADF4112BRUZ-REEL supports an RF input frequency range of 0.1 GHz to 3.0 GHz under 3 V operation, and 0.1 GHz to 3.0 GHz under 5 V operation. This specification is confirmed in Table 1 of the Rev. F datasheet, with input level and slew rate conditions specified for lower frequencies. The 3.0 GHz upper limit defines its suitability for UMTS Band I and II applications.
Does the ADF4112BRUZ-REEL require an external loop filter?
Yes, the ADF4112BRUZ-REEL requires an external passive loop filter connected between the CP pin and the VCO tuning input. As stated in the General Description section, "A complete phase-locked loop (PLL) can be implemented if the synthesizer is used with an external loop filter and voltage controlled oscillator (VCO)." The charge pump output drives this filter to generate the VCO control voltage.
What is the function of the VP pin on the ADF4112BRUZ-REEL?
The VP pin on the ADF4112BRUZ-REEL supplies the charge pump independently from AVDD/DVDD, allowing VP to range from AVDD to 6.0 V. This extends the tuning voltage range delivered to the VCO-especially valuable in 3 V systems where VP = 6 V enables full 0–6 V VCO tuning without external level-shifting circuitry, as detailed in Figure 25 and the Power Supplies section.
How does the ADF4112BRUZ-REEL indicate lock status?
The ADF4112BRUZ-REEL provides both analog and digital lock detect outputs. The LOCK pin delivers a CMOS-level signal indicating PLL lock, and the MUXOUT pin can be configured to output the same lock status. These functions are explicitly documented in the Features list and Functional Block Diagram, enabling system-level verification without additional monitoring components.
Is the ADF4112BRUZ-REEL pin-compatible with other ADF411x family members?
No, the ADF4112BRUZ-REEL shares the same TSSOP-16 pinout as ADF4110/ADF4111/ADF4113 per Figures 3 and 4 of the datasheet, but functional differences-including RF input range, prescaler performance, and current consumption-mean direct substitution requires validation of system-level timing, noise, and power constraints. Pin compatibility does not imply functional interchangeability.
ADF4112BRUZ-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:
- Active
- 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:
- 3GHz
- 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
ADF4112BRUZ-REEL FAQ
1.How can I place an order for ADF4112BRUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF4112BRUZ-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 ADF4112BRUZ-REEL reliable?
The price and inventory of ADF4112BRUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF4112BRUZ-REEL is usually 5 days.
3.What payment methods are accepted for ADF4112BRUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF4112BRUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF4112BRUZ-REEL?
ADF4112BRUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF4112BRUZ-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 ADF4112BRUZ-REEL?
For technical support, including ADF4112BRUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF4112BRUZ-REEL requirements.
6.How does Aetrix verify that ADF4112BRUZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADF4112BRUZ-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 ADF4112BRUZ-REEL meets industry standards.
7.What is the process for return or replacement of ADF4112BRUZ-REEL?
All ADF4112BRUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADF4112BRUZ-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 ADF4112BRUZ-REEL part is unused and in its original packaging.
Return procedure for ADF4112BRUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADF4112BRUZ-REEL Tags
-
CD74HCT4046AM96
Texas Instruments
-
MC14046BDWR2G
onsemi
-
501MILFT
Renesas
-
CD74HC7046AM
Texas Instruments
-
CDCVF2505PWR
Texas Instruments
-
RC19004A100GNL#KB0
Renesas
-
SI5351A-B-GTR
Skyworks Solutions Inc.
-
CY2305SXI-1T
Infineon Technologies
-
570BILFT
Renesas
-
CDCE913PWR
Texas Instruments
-
CY2305SXI-1HT
Infineon Technologies
-
DS1086LU+T
Analog Devices Inc./Maxim Integrated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
