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Analog Devices Inc. LTC5566IUH#PBF
- Part No.:
- LTC5566IUH#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC5566IUH#PBF.pdf
- Description:
- IC MIXER 300MHZ-4GHZ DWN QFN32
- Quantity:
- Payment:
- Shipping:
Inventory:1,594
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Product details
Overview
LTC5566IUH#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, wideband downconverting mixer IC designed for MIMO and diversity receiver front-ends. It delivers 12dB power conversion gain at 4.5GHz RF input, 35dBm output IP3, and programmable 0.5dB-step IF gain control across two independent channels - enabling precise gain matching in 4G/5G base station receivers.
For engineers reviewing the LTC5566IUH#PBF datasheet, LTC5566IUH#PBF pinout, LTC5566IUH#PBF application, or LTC5566IUH#PBF equivalent, this device supports SPI-programmable RF input tuning, reduced-power mode, differential IF outputs, and operates from a single 3.3V supply over –40°C to 105°C - critical for compact, thermally constrained radio designs.
Technical Context
The LTC5566IUH#PBF integrates two fully independent active mixers with on-chip RF transformers for 50Ω single-ended RF inputs, differential LO inputs (supporting single-ended or differential drive), and differential IF outputs. Each channel includes a digital variable-gain amplifier (DVGA) with 15.5dB range in 0.5dB steps, controlled via SPI or parallel interface.
It supports four RF tuning bands (450MHz–6GHz), with programmable RF input matching per band via SPI or parallel logic (T0/T1/PS). The device features integrated channel-to-channel isolation (>40dB), low LO-to-RF leakage (<–42dBm), and stable conversion gain vs. temperature (–0.014dB/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 300MHz to 6GHz - covers all major cellular bands (700MHz, 850MHz, 1.9GHz, 2.6GHz, 3.5GHz, 4.5GHz, 5GHz) without external tuning reconfiguration. |
| IF Gain Control | 15.5dB range in 0.5dB steps - enables fine-grained gain calibration between MIMO paths to minimize amplitude/phase mismatch. |
| Output IP3 | 35dBm (typ.) - ensures high linearity under strong interferer conditions in dense RF environments like DAS or small cells. |
| Power Conversion Gain | 12dB (typ., 0dB IF attenuation, 4.5GHz RF) - reduces need for post-mixer amplification, lowering noise figure and power consumption. |
| Supply Voltage | 3.3V single supply - simplifies power delivery and eliminates need for multiple rail generation in compact RF modules. |
| Operating Temperature | –40°C to 105°C case temperature - qualified for outdoor macro/base station deployments and industrial-grade wireless infrastructure. |
| Package | 32-lead 5mm × 5mm QFN with exposed thermal pad - provides low thermal resistance (θJC = 7.7°C/W) for sustained full-power operation. |
Pinout & Package
Package: 32-lead (5mm × 5mm) plastic QFN with exposed GND pad (Pin 33), lead-free finish, tape-and-reel packaging. Thermal pad must be soldered to PCB for proper heat dissipation and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF1 / RF2 | Dual single-ended RF inputs | 50Ω-terminated inputs with integrated balun; support independent signal paths for MIMO diversity reception. |
| LO+, LO– | Differential LO input | Accepts single-ended or differential LO drive; high return loss (>10dB up to 6GHz) minimizes LO source loading. |
| IF1+, IF1– / IF2+, IF2– | Differential IF outputs | 300Ω || 1pF output impedance - directly interfaces with differential IF filters/amplifiers without external matching. |
| EN1 / EN2 | Channel enable controls | Active-high logic inputs with internal pull-down; enable/disable each mixer independently to reduce system power dynamically. |
| T0, T1, PS | RF tuning band selection | Parallel logic interface (T0/T1) or SPI-controlled (PS) to select among 5 RF bands - enables fast frequency-agile reconfiguration. |
| SDI, SDO, CLK, CSB | SPI serial interface | 4-wire SPI (10MHz max clock) for programming IF gain, RF band, power mode, and diagnostics - accelerates prototyping and calibration. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent mixer channels | Enables simultaneous processing of two RF streams in MIMO/diversity architectures without cross-talk or shared resource contention. |
| 15.5dB IF DVGA with 0.5dB resolution | Supports closed-loop automatic gain control (AGC) with <±0.06dB gain error - essential for maintaining SNR across varying signal conditions. |
| Programmable RF input tuning (5 bands) | Eliminates external tunable matching networks; reduces BOM count and PCB area while supporting multi-band base station radios. |
| Reduced power mode | Cuts supply current by ~25% per channel (e.g., 384mA → 294mA both channels) - extends thermal headroom in fanless enclosures. |
| High channel-to-channel isolation | >40dB (up to 57dB at 450MHz) - prevents inter-channel leakage that degrades MIMO spatial multiplexing efficiency. |
| Integrated 50Ω RF input matching | Removes need for external baluns or matching components - simplifies layout and improves repeatability across production units. |
Applications
| 4G/5G Massive MIMO Base Stations | Distributed Antenna Systems (DAS) |
|---|---|
Use Scenario: Multi-element antenna array receiving concurrent LTE/NR signals across 3.5GHz and 4.5GHz bands in urban macro cells. IC Role / Device Role: Dual-channel downconversion front-end, providing matched gain and phase response across RF paths prior to digitization. Use Value: 0.5dB IF gain step resolution and >50dB channel isolation preserve spatial orthogonality required for MU-MIMO beamforming accuracy. |
Use Scenario: Remote radio unit (RRU) in indoor DAS serving multiple frequency layers (700MHz, 1.9GHz, 2.6GHz) with minimal footprint. IC Role / Device Role: Wideband mixer enabling flexible band selection via SPI-controlled RF tuning without hardware changes. Use Value: Single-part support for 5 RF bands (450MHz–6GHz) reduces inventory complexity and accelerates RRU variant development. |
| Software-Defined Radio (SDR) Transceivers | Network Test & Monitoring Equipment |
Use Scenario: Field-deployable SDR platform requiring rapid reconfiguration between cellular, public safety, and IoT waveforms. IC Role / Device Role: Reconfigurable downconverter with programmable gain, band, and power mode - controlled entirely via SPI. Use Value: 10MHz SPI interface and parallel control options enable real-time gain/band switching during waveform transitions. |
Use Scenario: Portable spectrum analyzer capturing wide instantaneous bandwidth (e.g., 100MHz) across 300MHz–6GHz range. IC Role / Device Role: High-linearity, low-noise mixer front-end delivering consistent conversion gain and NF across frequency sweeps. Use Value: 35dBm OIP3 and <13dB SSB NF (at 0dB IF attenuation) ensure accurate signal detection in presence of strong adjacent-channel interferers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel downconverting mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1040LP5E | Single-channel, 10–20GHz range, no integrated IF DVGA; requires external VGA and LO buffer. | Targeted at millimeter-wave test equipment, not sub-6GHz cellular infrastructure. | Select when operating above 6GHz or when discrete gain control architecture is preferred. |
| MAX19997A | Single-channel, 800MHz–2.5GHz RF range, fixed 12dB gain, no programmable RF tuning or reduced-power mode. | Designed for cost-sensitive consumer-grade diversity receivers, not high-performance MIMO base stations. | Select only for narrowband, low-complexity applications where SPI configurability and wideband coverage are unnecessary. |
Compared with HMC1040LP5E and MAX19997A, the LTC5566IUH#PBF uniquely combines dual-channel integration, 0.5dB IF gain resolution, 5-band RF tuning, and 3.3V operation - making it the only option qualified for thermally demanding, multi-band 4G/5G infrastructure with precise gain matching requirements.
Availability
LTC5566IUH#PBF is available at Aetrix Electronics and suitable for 4G/5G base station radios, distributed antenna systems, and software-defined radio transceivers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LTC5566IUH#PBF 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 acquired Linear Technology in 2017 and maintains its high-performance RF product lines with rigorous automotive and industrial qualification standards.
The LTC5566IUH#PBF belongs to Linear's precision RF mixer family, engineered specifically for cellular infrastructure applications demanding wideband operation, programmable gain, and thermal robustness in compact form factors.
FAQ
What is the RF input frequency range supported by the LTC5566IUH#PBF?
The LTC5566IUH#PBF supports an RF input frequency range of 300MHz to 6GHz, verified across five programmable tuning bands (Band 0 to Band 4). This covers all major licensed cellular bands including 700MHz, 850MHz, 1.9GHz, 2.6GHz, 3.5GHz, 4.5GHz, and 5GHz - with measured performance data provided in the datasheet for each band.
Does the LTC5566IUH#PBF require external matching components on the RF input?
No, the LTC5566IUH#PBF integrates RF transformers that provide single-ended 50Ω input matching across its full 300MHz–6GHz range. External matching is not required for nominal operation, though optional external tuning may be used to optimize return loss in specific band-edge scenarios.
How is IF gain controlled on the LTC5566IUH#PBF?
The LTC5566IUH#PBF provides 15.5dB of IF gain control in precise 0.5dB steps per channel, programmed via its 4-wire SPI interface (SDI/SDO/CLK/CSB) or parallel control lines (T0/T1/PS). Gain settings are applied independently to each channel, enabling dynamic path calibration in MIMO systems.
What is the maximum supply current draw for the LTC5566IUH#PBF?
The LTC5566IUH#PBF draws up to 450mA total supply current (ICC) when both channels operate in full-power mode at VCC = 3.3V and TC = 25°C. In reduced-power mode, current drops to 294mA for both channels - a 35% reduction that improves thermal margin in enclosed RF modules.
Is the LTC5566IUH#PBF pin-compatible with other devices in the LTC556x family?
No, the LTC5566IUH#PBF is not pin-compatible with earlier LTC5564 or LTC5562 variants. Its 32-pin QFN layout, pin functions (e.g., dedicated T0/T1/PS for RF tuning), and dual-channel IF output structure are unique to the LTC5566. Migration requires PCB redesign and firmware updates.
LTC5566IUH#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- RF Type:
- -
- Frequency:
- 300MHz ~ 6GHz
- Number of Mixers:
- 2
- Gain:
- 12dB
- Noise Figure:
- 22dB
- Secondary Attributes:
- -
- Current - Supply:
- 450mA
- Voltage - Supply:
- 3.3V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (5x5)
LTC5566IUH#PBF FAQ
1.How can I place an order for LTC5566IUH#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC5566IUH#PBF 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 LTC5566IUH#PBF reliable?
The price and inventory of LTC5566IUH#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC5566IUH#PBF is usually 5 days.
3.What payment methods are accepted for LTC5566IUH#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC5566IUH#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC5566IUH#PBF?
LTC5566IUH#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC5566IUH#PBF 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 LTC5566IUH#PBF?
For technical support, including LTC5566IUH#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC5566IUH#PBF requirements.
6.How does Aetrix verify that LTC5566IUH#PBF is sourced from the original manufacturer or authorized distributors?
All LTC5566IUH#PBF 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 LTC5566IUH#PBF meets industry standards.
7.What is the process for return or replacement of LTC5566IUH#PBF?
All LTC5566IUH#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC5566IUH#PBF, 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 LTC5566IUH#PBF part is unused and in its original packaging.
Return procedure for LTC5566IUH#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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