My Inquiry
My Account
Analog Devices Inc. LTC5569IUF#PBF
- Part No.:
- LTC5569IUF#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
LTC5569IUF#PBF.pdf
- Description:
- IC MIXER 300MHZ-4GHZ DWN 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:349
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC5569IUF#PBF from Analog Devices (formerly Linear Technology) is a dual active downconverting mixer IC optimized for diversity and MIMO receiver systems. It operates from 300MHz to 4GHz RF, supports 350MHz–4.5GHz LO, delivers 2dB typical conversion gain at 1950MHz, achieves 26.8dBm IIP3, and features independent enable pins (ENA/ENB) for power-gated operation in wireless infrastructure remote radio units.
For engineers reviewing the LTC5569IUF#PBF datasheet, LTC5569IUF#PBF pinout, LTC5569IUF#PBF application, or LTC5569IUF#PBF equivalent, key selection criteria include channel isolation (>44dB), low 11.7dB noise figure at 1950MHz, 3.3V/600mW total supply, 16-lead 4mm × 4mm QFN package, and differential IF output impedance of 530Ω || 1.3pF at 190MHz.
Technical Context
The LTC5569IUF#PBF integrates two symmetric, double-balanced active mixers sharing a common single-ended LO input but with independent RF inputs (RFA/RFB) and differential open-collector IF outputs (IFA+/IFA–, IFB+/IFB–). Each channel includes its own LO buffer amplifier, bias circuit, and enable control, enabling phase- and amplitude-coherent LO distribution across both paths.
Its RF inputs are internally matched to 50Ω from 1.4–3.3GHz using on-die transformers; external matching extends coverage to 300MHz–4GHz. The LO input maintains >12dB return loss from 1–3.5GHz regardless of enable state, and differential IF outputs support up to 1.6GHz bandwidth with external LC or transformer-based termination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 300MHz to 4000MHz - supports cellular bands from 700MHz LTE up to 3.8GHz 5G NR n77/n78. |
| LO Frequency Range | 350MHz to 4500MHz - enables high-side or low-side injection with stable 50Ω match even when mixers disabled. |
| IF Output Frequency Range | DC to 1600MHz - allows direct sampling of IF signals up to 1.6GHz without additional downconversion stages. |
| Conversion Gain | 2.0dB typical at 1950MHz - eliminates need for post-mixer gain stages in many diversity receiver designs. |
| IIP3 | 26.8dBm at 1950MHz - provides robust linearity against adjacent-channel interference in dense RF environments. |
| Noise Figure | 11.7dB SSB at 1950MHz - ensures high sensitivity in low-SNR base station front-ends. |
| Channel Isolation | >44dB from 300–1000MHz - prevents crosstalk between diversity/MIMO signal paths. |
| Supply & Power | 3.3V, 180mA (both mixers enabled) - draws only 600mW total, enabling compact thermal design in RRUs. |
Pinout & Package
Package: 16-lead (4mm × 4mm) plastic QFN with exposed thermal pad (Pin 17 = GND), rated for –40°C to 105°C case temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFA (Pin 1) | RF Input A | Single-ended 50Ω-matched RF port for Channel A; requires DC-blocking capacitor if source has DC offset. |
| RFB (Pin 4) | RF Input B | Single-ended 50Ω-matched RF port for Channel B; electrically isolated from RFA with >44dB channel-to-channel isolation. |
| ENA (Pin 12) | Enable A | CMOS-compatible digital control: ≥2.5V enables Channel A; ≤0.3V disables it with 200µA shutdown current. |
| ENB (Pin 9) | Enable B | CMOS-compatible digital control: ≥2.5V enables Channel B; ≤0.3V disables it independently of ENA. |
| LO (Pin 11) | Local Oscillator Input | Single-ended 50Ω-matched LO port shared by both mixers; maintains impedance stability across all enable states. |
| IFA+, IFA– (Pins 15, 14) | Differential IF Output A | Open-collector outputs requiring external bias (via inductors or transformer center tap); 530Ω || 1.3pF impedance at 190MHz. |
| IFB+, IFB– (Pins 6, 7) | Differential IF Output B | Open-collector outputs identical in structure and impedance to IFA+/IFA–, supporting parallel IF processing. |
| VCCA, VCCB (Pins 13, 8) | Supply A/B | Independent 3.3V supply pins per channel; each draws ~90mA when enabled, allowing separate decoupling. |
| BIASA, BIASB (Pins 16, 5) | Mixer Bias Adjustment | Open-circuit default setting yields optimal performance; 2.2V open-circuit voltage enables fine-tuning of DC current if needed. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable control | ENA/ENB pins allow dynamic power gating of each mixer channel, reducing system power by 50% when one path is idle. |
| LO input stability across modes | LO return loss remains >12dB from 1–3.5GHz whether zero, one, or both mixers are enabled-simplifies LO driver design. |
| Wideband RF input matching | Internal transformer-based RF inputs support 300–4000MHz with minimal external components (e.g., single 2.7pF series cap for 1.4–3.3GHz). |
| Differential IF output architecture | Low-capacitance open-collector IF outputs (IFA+/IFA–, IFB+/IFB–) enable high-frequency IF routing with reduced EMI and improved common-mode rejection. |
| High linearity & low noise coexistence | 26.8dBm IIP3 and 11.7dB NF at 1950MHz meet stringent requirements for carrier aggregation and multi-band receivers. |
| Thermally enhanced QFN package | 4mm × 4mm QFN with soldered exposed pad (Pin 17 = GND) provides θJC = 8°C/W, supporting continuous operation at 105°C case temperature. |
Applications
| Wireless Infrastructure Diversity Receivers | MIMO Infrastructure Receivers |
|---|---|
Use Scenario: Dual-antenna LTE/5G base station front-end receiving same signal via spatially separated antennas to combat fading. IC Role / Device Role / Timing Role: Dual-channel downconverting mixer providing coherent RF-to-IF translation for maximal ratio combining (MRC) algorithms. Use Value: >44dB channel isolation and matched conversion gain ensure accurate signal correlation between paths for optimal diversity gain. | Use Scenario: 4×4 or 8×8 massive MIMO active antenna system requiring simultaneous downconversion of multiple independent data streams. IC Role / Device Role / Timing Role: Two independent mixer channels integrated in single die, enabling compact, thermally uniform RF front-end partitioning. Use Value: Shared LO architecture guarantees sub-degree phase coherence between channels, critical for beamforming accuracy. |
| Remote Radio Units (RRUs) | Small Cell Base Stations |
Use Scenario: Outdoor macro-cell RRU deployed on tower top, operating in harsh thermal environments with strict power budget constraints. IC Role / Device Role / Timing Role: Low-power (600mW total), high-linearity downconverter enabling direct IF sampling without intermediate gain stages. Use Value: 3.3V operation and –40°C to 105°C rating eliminate need for external regulators or derating, simplifying outdoor enclosure design. | Use Scenario: Indoor/outdoor small cell unit serving dense urban or enterprise environments with multi-band carrier aggregation. IC Role / Device Role / Timing Role: Dual mixer supporting concurrent reception on different frequency bands (e.g., 1800MHz + 2600MHz) with independent enable control. Use Value: Independent ENA/ENB pins allow band-specific activation, reducing overall system power during low-traffic periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual downconverting mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1040LP4CE | Single-channel GaAs mixer; 300–4000MHz RF; no integrated LO buffer; requires external LO amplification. | Lacks dual-channel integration and independent enable logic-requires two devices and additional control logic for diversity/MIMO. | Select when higher IP3 (>30dBm) is required at expense of board area, power, and complexity. |
| ADL5365 | Single-channel SiGe mixer; 700–3000MHz RF; fixed 3.3V supply; no enable pin; 14-lead TSSOP package. | No channel enable, no LO stability across disable states, and narrower RF range limits use in wideband 5G FR1 deployments. | Select for cost-sensitive, single-path applications where thermal performance and LO flexibility are secondary. |
Compared with HMC1040LP4CE and ADL5365, the LTC5569IUF#PBF uniquely delivers dual-channel integration, independent enable control, and LO impedance stability across all operating modes-reducing component count, layout complexity, and calibration overhead in MIMO and diversity architectures.
Availability
LTC5569IUF#PBF is available at Aetrix Electronics and suitable for wireless infrastructure diversity receivers, MIMO infrastructure receivers, and remote radio units requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for LTC5569IUF#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 continues its legacy of high-performance analog and RF ICs for demanding communications and signal chain applications.
The LTC5569IUF#PBF belongs to Linear's high-frequency mixer product line, designed specifically for compact, low-power, high-linearity receiver front-ends in next-generation wireless infrastructure equipment.
FAQ
What is the operating temperature range for the LTC5569IUF#PBF?
The LTC5569IUF#PBF is specified for a case temperature range of –40°C to 105°C, validated per Absolute Maximum Ratings and Typical Performance Characteristics. Its thermal design-including exposed-pad QFN packaging and θJC = 8°C/W-ensures reliable operation in outdoor RRUs and thermally constrained small cells without derating.
Does the LTC5569IUF#PBF support both high-side and low-side LO injection?
Yes, the LTC5569IUF#PBF supports both high-side and low-side LO injection across its full 350MHz–4.5GHz LO range. Data sheet AC Electrical Characteristics confirm stable conversion gain, IIP3, and NF performance under both configurations-for example, 2.0dB gain and 26.8dBm IIP3 at 1950MHz RF with low-side LO at 1760MHz.
How is LO input impedance maintained when one mixer is disabled?
The LTC5569IUF#PBF maintains LO input impedance stability through dedicated LO buffer amplifiers per channel and internal bias architecture that preserves termination integrity. As shown in Figure 7 of the datasheet, LO return loss exceeds 12dB from 1–3.5GHz whether zero, one, or both mixers are enabled-enabling simplified LO driver design without re-matching.
What external components are required for basic operation of the LTC5569IUF#PBF?
Minimum external components for basic operation include: DC-blocking capacitors on RFA/RFB/LO (e.g., 1nF), bypass capacitors on VCCA/VCCB (e.g., 10nF), pull-up resistors on ENA/ENB (if driven from open-drain logic), and IF load networks-either 180nH inductors + 8:1 transformers for 190MHz bandpass IF, or appropriate termination for other IF frequencies per Table 4.
Can the LTC5569IUF#PBF be used for frequencies below 300MHz or above 4GHz?
The LTC5569IUF#PBF is characterized from 300MHz to 4GHz RF and 350MHz to 4.5GHz LO, but external matching extends usable range. For RF <300MHz, add series inductors (e.g., 270nH) and shunt capacitors per Figure 1; for RF >4GHz, performance degrades gradually-measured RF-to-IF isolation remains >31dB up to 4000MHz, and LO leakage stays <–42dBm up to 4500MHz.
LTC5569IUF#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- RF Type:
- General Purpose
- Frequency:
- 300MHz ~ 4GHz
- Number of Mixers:
- 2
- Gain:
- 2dB
- Noise Figure:
- 11.7dB
- Secondary Attributes:
- Down Converter
- Current - Supply:
- 180mA
- Voltage - Supply:
- 3.3V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (4x4)
LTC5569IUF#PBF FAQ
1.How can I place an order for LTC5569IUF#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC5569IUF#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 LTC5569IUF#PBF reliable?
The price and inventory of LTC5569IUF#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC5569IUF#PBF is usually 5 days.
3.What payment methods are accepted for LTC5569IUF#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC5569IUF#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC5569IUF#PBF?
LTC5569IUF#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC5569IUF#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 LTC5569IUF#PBF?
For technical support, including LTC5569IUF#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC5569IUF#PBF requirements.
6.How does Aetrix verify that LTC5569IUF#PBF is sourced from the original manufacturer or authorized distributors?
All LTC5569IUF#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 LTC5569IUF#PBF meets industry standards.
7.What is the process for return or replacement of LTC5569IUF#PBF?
All LTC5569IUF#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC5569IUF#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 LTC5569IUF#PBF part is unused and in its original packaging.
Return procedure for LTC5569IUF#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC5569IUF#PBF Tags
-
MAX2671EUT+T
Analog Devices Inc./Maxim Integrated
-
ADEX-10+
Mini-Circuits
-
ADE-2+
Mini-Circuits
-
ADE-1+
Mini-Circuits
-
LT5560EDD#PBF
Analog Devices Inc.
-
LT5560EDD#TRPBF
Analog Devices Inc.
-
LTC5562IUC#TRPBF
Analog Devices Inc.
-
MAX2681EUT+T
Analog Devices Inc./Maxim Integrated
-
ADE-1ASK+
Mini-Circuits
-
ADE-1L+
Mini-Circuits
-
ADL5350ACPZ-R7
Analog Devices Inc.
-
AD608ARZ-RL
Analog Devices Inc.
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…
