My Inquiry
My Account
Analog Devices Inc. ADF4156BCPZ
- Part No.:
- ADF4156BCPZ
- Manufacturer:
- Analog Devices Inc.
- Package:
- 20-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADF4156BCPZ.pdf
- Description:
- IC FRACT N SYNTH 20LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,332
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADF4156BCPZ from Analog Devices is a 6.2 GHz fractional-N frequency synthesizer implementing local oscillators in upconversion/downconversion paths of wireless transceivers. It features 2.7–3.3 V operation, programmable charge-pump current (312.5 µA to 5 mA), 3-wire serial interface, digital lock detect, and cycle slip reduction for faster lock times. Used in WiMAX base stations and WCDMA handsets.
For engineers reviewing the ADF4156BCPZ datasheet, ADF4156BCPZ pinout, ADF4156BCPZ application, or ADF4156BCPZ equivalent, key selection criteria include RF bandwidth (6.2 GHz), fractional-N interpolation with 12-bit INT/FRAC/MOD registers, VP pin for extended tuning voltage (up to 5.5 V), phase programmability, and compatibility with ADIsimPLL loop filter design.
Technical Context
The ADF4156BCPZ integrates a low-noise digital phase frequency detector (PFD), precision charge pump, and third-order Σ-Δ fractional interpolator enabling fine frequency resolution. Its N-divider supports N = INT + FRAC/MOD with INT (23–4095), FRAC (0–MOD−1), and MOD (2–4095).
It provides dual-mode RF output phase control and cycle slip reduction circuitry that accelerates lock time without loop filter redesign. The device supports programmable reference division (R = 1–32), reference doubler/divide-by-2, and two noise optimization modes (low-noise/low-spur) verified on ZCOMM V940ME03 VCO at 5.8 GHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 0.5 GHz to 6.2 GHz input - enables direct synthesis of LO signals for sub-6 GHz wireless infrastructure and handset front-ends. |
| PFD Max Frequency | 32 MHz - sets upper limit on reference clock rate and loop bandwidth for stable PLL operation. |
| Charge-Pump Current | Programmable 312.5 µA to 5 mA - allows trade-off between loop filter size, lock time, and reference spur level. |
| Fractional Resolution | 12-bit INT, 12-bit FRAC, 12-bit MOD - supports <1 Hz frequency step resolution at high RF outputs. |
| Phase Programmability | 12-bit phase word (0°–360° in 360°/MOD steps) - enables deterministic RF-to-reference phase alignment for coherent systems. |
| Supply Voltage | AVDD/DVDD = 2.7 V to 3.3 V; VP = AVDD to 5.5 V - separates logic supply from charge-pump headroom, supporting wide-tuning-range VCOs. |
| Digital Interface | 3-wire serial (CLOCK, DATA, LE) with MSB-first 32-bit shift register - simplifies microcontroller integration and reduces PCB routing complexity. |
Pinout & Package
LFCSP_VQ (32-lead, 5 mm × 5 mm, exposed pad) package. Exposed pad must be soldered to ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RSET | Charge-pump current setting | Resistor to ground defines ICPmax per ICP = 25/RSET (kΩ); 5.1 kΩ yields 5 mA typical. |
| CP | Charge-pump output | Drives external loop filter; requires low-impedance path to VCO tuning port; sensitive to noise coupling. |
| VP | Charge-pump power supply | Independent rail (up to 5.5 V) enables full VCO tuning range without compromising digital supply integrity. |
| REFIN | Reference clock input | CMOS-compatible (10–250 MHz); internal 100 kΩ termination; supports ac-coupled or dc-coupled drive. |
| RFINA/RFINB | Differential RF prescaler input | Accepts 0.5–6.2 GHz small-signal RF; requires 100 pF bypass on RFINB; ac-coupled from VCO output. |
| MUXOUT | Multiplexer output | Selectable internal signal: lock detect, N-divider, R-divider, clock divider, or serial data - aids debug and system monitoring. |
| CE | Chip enable | Active-low; places CP in three-state and disables digital core - reduces quiescent current to 1 µA in sleep mode. |
Key Features
| Feature | Design Value |
|---|---|
| Cycle slip reduction | Reduces frequency settling time by eliminating false lock events during large frequency jumps (e.g., 200 MHz jump in <800 µs). |
| Dual noise optimization modes | Configurable low-noise mode (−89.5 dBc/Hz @ 5 kHz offset) or low-spur mode (fractional spurs suppressed, integer boundary spurs remain). |
| Pin compatibility | Direct replacement for ADF4110/4111/4112/4113, ADF4106, ADF4153, ADF4154 - enables drop-in upgrade in existing PLL designs. |
| ADIsimPLL support | Full loop filter design, phase noise prediction, and spur analysis integrated into Analog Devices' free simulation tool. |
| Programmable RF output phase | 12-bit phase word adjusts RF output phase relative to REFIN with resolution down to 360°/MOD - critical for phased-array and MIMO calibration. |
Applications
| Wireless Base Stations | Test & Measurement Equipment |
|---|---|
Use Scenario: Generating local oscillator signals for upconversion in WiMAX, GSM, and WCDMA macrocell and SuperCell 3G base stations. IC Role / Device Role / Timing Role: Fractional-N synthesizer providing agile, low-phase-noise LO with fast lock for TDD/FDD channel switching. Use Value: 6.2 GHz RF bandwidth covers entire sub-6 GHz licensed spectrum; cycle slip reduction ensures <800 µs lock for dynamic channel allocation. | Use Scenario: Precision frequency synthesis in vector signal analyzers and RF signal generators requiring fine resolution and low spurs. IC Role / Device Role / Timing Role: Core PLL engine generating calibrated, programmable output frequencies with traceable phase relationships. Use Value: 12-bit FRAC/MOD registers enable <1 Hz step resolution; dual noise modes allow optimization for spectral purity or spur suppression per test requirement. |
| Wireless Handsets | CATV Infrastructure |
Use Scenario: Dual-band LO generation in multi-mode GSM/PCS/DCS/WCDMA mobile handsets with shared VCO architecture. IC Role / Device Role / Timing Role: Frequency synthesizer driving quadrature modulators/demodulators in transceiver RFICs. Use Value: 2.7–3.3 V single-supply operation matches handset PMIC rails; 1 µA sleep current extends battery life during idle periods. | Use Scenario: Channel tuning in cable modem termination systems (CMTS) and set-top box tuners operating across 50–1000 MHz DOCSIS bands. IC Role / Device Role / Timing Role: High-stability LO source for QAM demodulation with minimal phase error impact on EVM. Use Value: −220 dBc/Hz normalized phase noise floor and −110 dBc/Hz 1/f noise ensure <0.73° RMS integrated phase error at 5.8 GHz - meets DOCSIS 3.1 spectral mask requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fractional-N frequency synthesizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADF4153BCPZ | Lower RF bandwidth (4.0 GHz), no VP pin, fixed 3.3 V charge-pump supply, no cycle slip reduction. | Suitable for cost-sensitive 2.4/5 GHz WLAN or lower-frequency infrastructure where 6.2 GHz coverage not required. | Select ADF4153BCPZ only if RF range ≤4 GHz and extended tuning voltage is unnecessary. |
| ADF4154BCPZ | Same 6.2 GHz bandwidth and VP pin, but lacks programmable RF output phase and has reduced MOD register depth (8-bit vs. 12-bit). | Applicable where phase alignment is not needed and coarser fractional resolution (e.g., >1 kHz step) is acceptable. | Choose ADF4154BCPZ when phase programmability and finest fractional resolution are non-critical. |
Compared with ADF4153BCPZ and ADF4154BCPZ, the ADF4156BCPZ uniquely delivers full 6.2 GHz coverage, independent VP rail for wide-tuning VCOs, deterministic RF phase control, and cycle slip reduction-making it the only option among the three for demanding 5G FR1 and high-end test equipment designs requiring sub-Hz resolution and fast, reliable locking.
Availability
ADF4156BCPZ is available at Aetrix Electronics and suitable for wireless infrastructure, communications test equipment, and CATV systems requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.
Supply support for ADF4156BCPZ 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 ADF4156BCPZ belongs to Analog Devices' ADF4xxx family of fractional-N PLL synthesizers, designed specifically for wireless communication systems requiring wideband, low-noise, and fast-locking local oscillator generation.
FAQ
What is the maximum RF input frequency supported by the ADF4156BCPZ?
The ADF4156BCPZ supports an RF input frequency range of 0.5 GHz to 6.2 GHz. This is specified under "RF CHARACTERISTICS" in the datasheet with test conditions of −10 dBm minimum to 0 dBm maximum input power. Operation below 0.5 GHz requires ensuring slew rate exceeds 400 V/µs to maintain prescaler functionality.
Does the ADF4156BCPZ support phase programmability, and how is it implemented?
Yes, the ADF4156BCPZ supports programmable RF output phase via a dedicated 12-bit phase register (R1). The phase word sets output phase relative to the reference clock with resolution of 360°/MOD, where MOD is loaded in the MOD/R register. This enables deterministic phase alignment for phased-array calibration or fractional spur optimization in the ADF4156BCPZ.
How does the cycle slip reduction feature improve lock time in the ADF4156BCPZ?
The ADF4156BCPZ incorporates dedicated cycle slip reduction circuitry that detects and corrects false lock conditions during large frequency transitions. As shown in Figures 8 and 9 of the datasheet, this reduces 200 MHz frequency jumps (e.g., 5705 MHz → 5905 MHz) to under 800 µs - significantly faster than conventional fractional-N synthesizers without this feature - without requiring loop filter modifications.
What are the power supply requirements for the ADF4156BCPZ, and why is the VP pin separate?
The ADF4156BCPZ requires AVDD and DVDD at 2.7 V to 3.3 V, while the VP pin accepts 2.7 V to 5.5 V. The separate VP rail powers the charge pump independently, allowing full 0–5.5 V tuning voltage to be delivered to wide-range VCOs without violating digital supply limits - a key differentiator from earlier ADF415x devices like the ADF4153BCPZ.
Which evaluation board is recommended for prototyping with the ADF4156BCPZ?
The EV-ADF4156SD1Z evaluation board is the official Analog Devices platform for the ADF4156BCPZ. It includes onboard loop filter components, SMA RF and reference connectors, USB interface for SPI control, and compatibility with ADIsimPLL software - enabling rapid characterization of phase noise, lock time, and spur performance for the ADF4156BCPZ.
ADF4156BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Fractional N 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:
- 6.2GHz
- Divider/Multiplier:
- Yes/Yes
- Voltage - Supply:
- 2.7V ~ 3.3V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-LFCSP (4x4)
ADF4156BCPZ FAQ
1.How can I place an order for ADF4156BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADF4156BCPZ 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 ADF4156BCPZ reliable?
The price and inventory of ADF4156BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADF4156BCPZ is usually 5 days.
3.What payment methods are accepted for ADF4156BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADF4156BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADF4156BCPZ?
ADF4156BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADF4156BCPZ 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 ADF4156BCPZ?
For technical support, including ADF4156BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADF4156BCPZ requirements.
6.How does Aetrix verify that ADF4156BCPZ is sourced from the original manufacturer or authorized distributors?
All ADF4156BCPZ 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 ADF4156BCPZ meets industry standards.
7.What is the process for return or replacement of ADF4156BCPZ?
All ADF4156BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with ADF4156BCPZ, 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 ADF4156BCPZ part is unused and in its original packaging.
Return procedure for ADF4156BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADF4156BCPZ 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…
