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Analog Devices Inc. LT5522EUF#TRPBF
- Part No.:
- LT5522EUF#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
LT5522EUF#TRPBF.pdf
- Description:
- IC MIXER 400MHZ-2.7GHZ DWN 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:445
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Product details
Overview
LT5522EUF#TRPBF from Analog Devices (acquired Linear Technology) is a high-linearity active downconverting mixer IC optimized for wireless and CATV infrastructure receivers. It operates from 400MHz to 2.7GHz RF input, delivers +25dBm IIP3 at 900MHz, −0.5dB typical conversion gain, 12.5dB SSB noise figure, and consumes only 280mW at 5V. It enables high-dynamic-range cellular base station and broadband cable downlink receivers.
For engineers reviewing the LT5522EUF#TRPBF datasheet, LT5522EUF#TRPBF pinout, LT5522EUF#TRPBF application, or LT5522EUF#TRPBF equivalent, key selection criteria include its integrated RF balun, single-ended 50Ω ports, enable-controlled shutdown (100µA), wideband LO buffer, and differential IF output requiring external impedance transformation - all in a compact 4mm × 4mm QFN package.
Technical Context
The LT5522EUF#TRPBF integrates a double-balanced mixer core driven by a high-speed limiting LO buffer amplifier and biased via dedicated VCC1/VCC2 rails. Its RF input incorporates an on-chip transformer with internal 1.2–2.3GHz match; external shunt C or L shifts coverage to 400MHz or 2.7GHz respectively. The LO port is internally matched for 50Ω single-ended drive without external components.
It supports both low-side and high-side LO injection, delivers IF outputs from 100kHz to 1GHz, and features >45dB LO-to-RF isolation and ≤–50dBm LO leakage across 400–2700MHz. The enable pin (EN) controls full power-down with 3µs turn-on time and 5µs turn-off time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 400MHz–2.7GHz (with external shunt C/L); no matching needed for 1.2–2.3GHz band - reduces BOM count and layout complexity |
| IIP3 (900MHz) | +25dBm - enables handling of strong interferers in cellular base stations without front-end attenuation |
| Conversion Gain | −0.5dB typical at 900MHz - minimizes need for post-mixer amplification while preserving SNR |
| SSB Noise Figure | 12.5dB at 900MHz - supports high-sensitivity demodulation in low-SNR infrastructure links |
| Supply Voltage | 4.5V–5.25V - compatible with standard 5V system rails and tolerant of ±2.5% regulation variation |
| Power Consumption | 280mW typical - balances performance and thermal load in densely packed RF modules |
| Enable Shutdown Current | 100µA - allows rapid power cycling in TDD systems without compromising bias stability |
Pinout & Package
LT5522EUF#TRPBF is housed in a 16-lead 4mm × 4mm plastic QFN package (UF) with exposed thermal pad (Pin 17) that must be soldered to PCB ground for optimal thermal and RF performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF+, RF− (Pins 2, 3) | Differential RF input terminals | Primary side of integrated balun; RF− used as single-ended input when RF+ grounded - eliminates external balun |
| LO+, LO− (Pins 14, 15) | Differential LO input terminals | Internally matched for 50Ω single-ended drive; no external matching required - simplifies LO path design |
| IF+, IF− (Pins 10, 11) | Differential IF output terminals | Require external biasing (via chokes/transformer center-tap) and impedance transformation to 50Ω - enables flexible IF architecture |
| VCC1, VCC2 (Pins 6, 7) | Separate supply rails | VCC1 powers LO buffer (22mA), VCC2 powers bias circuits (4mA) - allows independent decoupling and noise isolation |
| EN (Pin 5) | Enable control input | Active-high logic; ≥3V enables full operation, ≤0.3V disables all circuits - supports fast TDD switching |
| GND (Pins 9, 12) | Ground connections | Internally tied to backside ground plane; must connect to RF ground - improves LO-to-RF/IF isolation |
| NC (Pins 1, 4, 8, 13, 16) | No-connect pins | Internally unconnected; recommended to ground on PCB for enhanced isolation - not for routing or bypass |
| Exposed Pad (Pin 17) | Thermal and electrical ground | Mandatory solder connection to PCB ground plane - essential for thermal dissipation and RF return path integrity |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RF input transformer | Eliminates external balun and reduces board area by >30% in 900MHz/1900MHz base station designs |
| Wideband 50Ω single-ended RF/LO ports | Removes need for external matching networks across 400–2700MHz - accelerates RF front-end prototyping |
| High linearity (+25dBm IIP3 @ 900MHz) | Supports coexistence with adjacent-channel transmitters in dense urban macrocells without desensitization |
| Low-power LO buffer with −5dBm drive requirement | Reduces LO synthesizer output power demand and associated filtering complexity in multi-carrier systems |
| Enable-controlled shutdown (100µA) | Enables dynamic power management in time-division duplex (TDD) architectures with sub-5µs transition times |
| 16-lead 4mm × 4mm QFN package | Provides thermal performance comparable to larger packages while enabling high-density RF module integration |
Applications
| Cellular Base Station Receiver | CATV Downlink Infrastructure |
|---|---|
|
Use Scenario: Downconverting 1900MHz PCS band signals to 140MHz IF in macrocell remote radio heads. IC Role / Device Role / Timing Role: Active downconverting mixer providing high-linearity signal translation with integrated RF balun and LO buffer. Use Value: +21.5dBm IIP3 at 1900MHz and >45dB LO-RF isolation prevent intermodulation distortion from strong out-of-band blockers. |
Use Scenario: Converting 1150MHz CATV downlink channel to 500MHz IF in headend distribution amplifiers. IC Role / Device Role / Timing Role: High-dynamic-range mixer supporting wide IF bandwidth (50–1050MHz) with minimal spurious generation. Use Value: 23dBm IIP3 and ≤–63dBc 2RF−LO spurs ensure clean channel separation in multi-channel analog/digital hybrid systems. |
| 2.4GHz ISM Band Equipment | UMTS/WCDMA Infrastructure |
|
Use Scenario: Low-noise downconversion of 2450MHz Wi-Fi/Bluetooth coexistence signals to 140MHz IF in test instrumentation. IC Role / Device Role / Timing Role: Wideband mixer with 15.6dB SSB NF at 2450MHz and calibrated gain flatness over temperature. Use Value: −0.7dB conversion gain and 16.8dBm IIP3 maintain EVM performance under high RF input power conditions. |
Use Scenario: Dual-band (900MHz/2100MHz) UMTS receiver front-end in Node B equipment with shared LO architecture. IC Role / Device Role / Timing Role: Single-chip solution supporting both low-side and high-side LO injection with stable gain vs. temperature (−0.02dB/°C). Use Value: 12.5dB NF at 900MHz and 14.3dB NF at 2100MHz ensure consistent sensitivity across FDD bands without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar active downconverting mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADL5801ACPZ-R7 | Wider IF range (DC–6GHz), higher supply current (120mA), no integrated RF balun - requires external balun and matching | Better suited for wideband IF sampling architectures; less optimal for narrowband 140MHz IF with minimal external components | Select ADL5801ACPZ-R7 when IF bandwidth >1GHz is required and board space permits external balun implementation |
| MAX2029ETE+ | Higher IIP3 (+30dBm @ 1900MHz), but narrower RF range (1400–2700MHz), no enable pin, 24-lead TQFN package | Optimized for high-frequency PHS/WiMAX receivers; lacks low-band 400–900MHz support and power-gating capability | Select MAX2029ETE+ only for 1900MHz+ applications where maximum linearity is critical and enable control is unnecessary |
Compared with ADL5801ACPZ-R7 and MAX2029ETE+, the LT5522EUF#TRPBF uniquely combines integrated RF balun, 400–2700MHz RF coverage, enable functionality, and ultra-low 100µA shutdown current - making it optimal for cost-sensitive, space-constrained, and power-aware infrastructure receivers.
Availability
LT5522EUF#TRPBF is available at Aetrix Electronics and suitable for cellular base station receivers, CATV downlink infrastructure, 2.4GHz ISM test equipment, and UMTS/WCDMA Node B deployments requiring stable component supply and long-term production continuity.
Supply support for LT5522EUF#TRPBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving communications, industrial, automotive, and healthcare markets.
The LT5522EUF#TRPBF belongs to ADI's high-linearity RF mixer product line, engineered specifically for demanding wireless infrastructure applications where dynamic range, integration, and power efficiency are critical.
FAQ
What is the RF input frequency range supported by the LT5522EUF#TRPBF?
The LT5522EUF#TRPBF supports RF input frequencies from 400MHz to 2.7GHz. With no external matching components, it achieves optimal performance between 1.2GHz and 2.3GHz. A shunt capacitor (e.g., 2.2pF) on Pin 3 extends coverage down to 400MHz, while a shunt inductor (e.g., 3.9nH) extends it up to 2.7GHz - all confirmed in the official datasheet Figures 5 and 16.
Does the LT5522EUF#TRPBF require external baluns for single-ended RF or LO drive?
No, the LT5522EUF#TRPBF does not require external baluns. It integrates an on-chip RF input transformer and features internally matched 50Ω single-ended RF and LO ports - verified in the "Features" section and Figure 2 of the datasheet. External matching is optional only for band extension.
What is the typical conversion gain and IIP3 of the LT5522EUF#TRPBF at 900MHz?
At 900MHz, the LT5522EUF#TRPBF delivers −0.5dB typical conversion gain and +25dBm typical input third-order intercept point (IIP3), as specified in the AC Electrical Characteristics table (page 3 of the datasheet) under Cellular/PCS/UMTS conditions with −5dBm LO drive.
How is the IF output of the LT5522EUF#TRPBF configured, and what external components are required?
The LT5522EUF#TRPBF provides differential IF+ and IF− outputs (Pins 10 and 11) that must be biased to VCC via matching inductors or transformer center-taps. For 50Ω single-ended IF, a 4:1 or 8:1 transformer (e.g., MABAES0054 or ETC4-1-2) is required - detailed in Figures 10 and 12 and Table 3 of the datasheet.
What is the function and voltage threshold of the EN pin on the LT5522EUF#TRPBF?
The EN pin (Pin 5) enables or disables the LT5522EUF#TRPBF. It is active-high: logic high ≥3V enables full operation (56–68mA supply current), while logic low ≤0.3V places the device in shutdown mode drawing only 100µA - specified in the DC Electrical Characteristics table (page 2 of the datasheet).
LT5522EUF#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT5522
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- RF Type:
- Cellular, PCS, UMTS
- Frequency:
- 400MHz ~ 2.7GHz
- Number of Mixers:
- 1
- Gain:
- -0.2dB
- Noise Figure:
- 13.9dB
- Secondary Attributes:
- Down Converter
- Current - Supply:
- 56mA
- Voltage - Supply:
- 4.5V ~ 5.25V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (4x4)
LT5522EUF#TRPBF FAQ
1.How can I place an order for LT5522EUF#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT5522EUF#TRPBF 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 LT5522EUF#TRPBF reliable?
The price and inventory of LT5522EUF#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT5522EUF#TRPBF is usually 5 days.
3.What payment methods are accepted for LT5522EUF#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT5522EUF#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT5522EUF#TRPBF?
LT5522EUF#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT5522EUF#TRPBF 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 LT5522EUF#TRPBF?
For technical support, including LT5522EUF#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT5522EUF#TRPBF requirements.
6.How does Aetrix verify that LT5522EUF#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT5522EUF#TRPBF 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 LT5522EUF#TRPBF meets industry standards.
7.What is the process for return or replacement of LT5522EUF#TRPBF?
All LT5522EUF#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT5522EUF#TRPBF, 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 LT5522EUF#TRPBF part is unused and in its original packaging.
Return procedure for LT5522EUF#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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