My Inquiry
My Account
Analog Devices Inc. LTC5549IUDB#TRMPBF
- Part No.:
- LTC5549IUDB#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC5549IUDB#TRMPBF.pdf
- Description:
- IC MIXER 2GHZ-14GHZ 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,512
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC5549IUDB#TRMPBF from Analog Devices (formerly Linear Technology) is a 2GHz–14GHz passive double-balanced microwave mixer with integrated LO buffer amplifier and digitally controllable LO frequency doubler. It supports upconversion and downconversion, delivers +28.2dBm IIP3 at 5.8GHz, 8.0dB conversion loss, and +14.3dBm input P1dB - all with only 0dBm LO drive and 3.3V/115mA supply. It is used in C/X/Ku-band radar transceivers requiring high linearity and wide RF bandwidth.
For engineers reviewing the LTC5549IUDB#TRMPBF datasheet, LTC5549IUDB#TRMPBF pinout, LTC5549IUDB#TRMPBF application, or LTC5549IUDB#TRMPBF equivalent, key selection criteria include its dual-mode LO operation (1–12GHz fundamental or 0.5–6GHz doubled), 12-lead 2mm × 3mm QFN package with exposed thermal pad, fast 0.2μs turn-on for TDD systems, and guaranteed performance across –40°C to 105°C.
Technical Context
The LTC5549IUDB#TRMPBF implements a passive double-balanced mixer core with on-die RF/IF transformers and a high-linearity LO buffer amplifier. Its architecture enables simultaneous broadband operation across RF (2–14GHz), IF (0.5–6GHz), and LO (1–12GHz) ports, with impedance matching maintained via internal transformer design and external 0.15pF shunt capacitors.
LO frequency doubling is implemented as a digital-bypassable function controlled by the X2 pin (CMOS-compatible, 1.2V threshold), allowing direct interface with synthesizers like LTC6946/LTC6948 while preserving low-side or high-side injection flexibility. The enable (EN) pin provides fast 0.2μs turn-on/off control for time-division duplexing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 2GHz to 14GHz - supports full C, X, and Ku radar bands without external tuning. |
| LO Frequency Range (X2 = Low) | 1GHz to 12GHz - accepts standard synthesizer outputs directly. |
| LO Frequency Range (X2 = High) | 0.5GHz to 6GHz - enables use of lower-cost, lower-frequency LO sources with frequency doubling. |
| IIP3 @ 5.8GHz | +28.2dBm - ensures high dynamic range in dense RF environments such as wireless backhaul. |
| Conversion Loss @ 5.8GHz | 8.0dB (X2 = Low) - defines signal path gain budget; low loss reduces cascaded noise figure impact. |
| Input P1dB @ 5.8GHz | +14.3dBm - sets maximum usable RF input level before compression in receiver front-ends. |
| Supply Voltage / Current | 3.3V / 115mA - enables integration into compact 3.3V power domains with predictable thermal load. |
| Operating Temperature | –40°C to 105°C - qualified for industrial and outdoor base station deployments. |
Pinout & Package
Package: 12-lead (2mm × 3mm) plastic QFN (UDB), exposed thermal pad (Pin 13) soldered to PCB ground for thermal and electrical integrity. θJC = 25°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 3, 4, 6, 10, 12, Exposed Pad 13) | Ground reference and thermal path | All GND pins must be low-inductance connected to RF ground plane; exposed pad is mandatory for thermal dissipation and signal integrity. |
| IF (Pin 2) | Single-ended IF port | Internally connected to primary of IF transformer (DC resistance ~6.2Ω); requires DC blocking capacitor; 50Ω matched from 500MHz–6GHz. |
| RF (Pin 5) | Single-ended RF port | Internally connected to primary of RF transformer (DC resistance ~3.2Ω); requires DC blocking capacitor; 50Ω matched from 2GHz–14GHz. |
| EN (Pin 7) | Enable control input | CMOS-compatible (1.2V high threshold); enables/disables entire device; 0.2μs turn-on time supports TDD timing. |
| X2 (Pin 8) | LO frequency doubler control | Digital control for internal doubler (1.2V high = enabled); internal 376kΩ pull-down allows default-off operation when floating. |
| VCC (Pin 9) | Power supply input | 3.3V regulated supply; requires local 1µF bypass capacitor; current draw varies with X2 state (115mA typical). |
| LO (Pin 11) | Local oscillator input | Single-ended 50Ω port; DC bias ~1.6V; requires DC blocking capacitor; matched from 1GHz–12GHz with external 0.15pF shunt cap. |
Key Features
| Feature | Design Value |
|---|---|
| Bypassable LO frequency doubler | Enables flexible LO sourcing: use 1–12GHz synthesizers directly (X2 = Low) or reduce LO source cost/complexity with 0.5–6GHz inputs (X2 = High). |
| Fast enable/disable timing | 0.2μs turn-on and 0.1μs turn-off support tight TDD frame synchronization in FDD/TDD hybrid systems. |
| Integrated RF/IF transformers | Eliminates external baluns; maintains 50Ω match across full RF (2–14GHz) and IF (0.5–6GHz) bands with minimal external components. |
| Low LO-RF leakage | <–30dBm LO-to-RF leakage prevents LO radiation into antenna paths, critical for sensitive receive chains. |
| High linearity at low LO drive | +28.2dBm IIP3 and +14.3dBm P1dB achieved with only 0dBm LO input - reduces LO amplifier stage complexity and power consumption. |
| Industrial temperature grade | Specified over –40°C to 105°C case temperature with guaranteed AC performance - suitable for uncooled outdoor RF modules. |
Applications
| Phased-Array Radar Front-End | Point-to-Point Microwave Backhaul |
|---|---|
Use Scenario: Active electronically scanned array (AESA) radar operating in X-band (8–12GHz) with TDD waveform scheduling. IC Role / Device Role / Timing Role: Downconverter for received RF echoes; EN pin synchronized to TDD slot timing for rapid channel blanking. Use Value: 0.2μs turn-on enables precise receive window alignment; +22.8dBm IIP3 at 12GHz preserves dynamic range amid strong clutter signals. | Use Scenario: 5G fixed wireless access (FWA) link operating at 28GHz carrier with 5.8GHz IF processing. IC Role / Device Role / Timing Role: Upconverter in transmit chain; LO doubler (X2 = High) accepts 2.9GHz synthesizer output to generate 5.8GHz IF. Use Value: Eliminates need for costly 5.8GHz LO source; 8.1dB conversion loss at 5.8GHz minimizes EIRP penalty in power-constrained outdoor units. |
| Satellite Modem IF Interface | C/X-Band Test Equipment Signal Path |
Use Scenario: LEO satellite modem handling multiple frequency bands (C-band downlink, X-band uplink) with shared IF processing. IC Role / Device Role / Timing Role: Dual-role mixer: downconverts C-band (4–8GHz) RX signals and upconverts X-band (8–12GHz) TX signals using same IF port. Use Value: Single-chip solution replaces two discrete mixers; 50Ω single-ended ports simplify interconnect to FPGA-based IF processors. | Use Scenario: Portable spectrum analyzer front-end requiring calibrated wideband mixing from 2–14GHz. IC Role / Device Role / Timing Role: Core downconversion element; LO doubler disabled (X2 = Low) to accept precision 10GHz synthesizer output for harmonic-free mixing. Use Value: <–30dBm LO-RF leakage ensures measurement accuracy; ±0.009dB/°C conversion loss drift enables stable calibration over lab temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microwave mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC774ALC3B | Active GaAs mixer; requires +5V supply and higher LO drive (+13dBm); no integrated doubler; 3.5mm × 3.5mm package. | Better noise figure (6.5dB) but higher power and LO drive; suited for ultra-low-noise receive chains where LO power is available. | Select HMC774ALC3B when lowest possible NF is required and +5V/13dBm LO is acceptable; LTC5549IUDB#TRMPBF preferred for 3.3V, low-LO-power, space-constrained designs. |
| ADL5801ACPZ-R7 | Active SiGe mixer; 100MHz–6GHz RF range; integrated LO buffer; no frequency doubler; 4mm × 4mm LFCSP. | Lower frequency coverage limits use to sub-6GHz applications; higher integration includes on-chip IF amplification. | Select ADL5801ACPZ-R7 for sub-6GHz IF-centric designs needing gain; LTC5549IUDB#TRMPBF remains sole choice for 2–14GHz RF bandwidth with LO doubling. |
Compared with HMC774ALC3B and ADL5801ACPZ-R7, the LTC5549IUDB#TRMPBF uniquely combines 2–14GHz RF bandwidth, integrated LO doubler, and 3.3V/0dBm LO operation in a 2mm × 3mm footprint - enabling compact, low-power, wideband transceivers where frequency agility and board area are critical.
Availability
LTC5549IUDB#TRMPBF is available at Aetrix Electronics and suitable for microwave transceivers, phased-array radar systems, and point-to-point wireless backhaul requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC5549IUDB#TRMPBF 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. Linear pioneered precision analog and RF ICs for demanding communications infrastructure applications.
The LTC5549IUDB#TRMPBF belongs to Linear's microwave mixer family designed specifically for wideband, high-linearity signal conversion in radar, test equipment, and wireless infrastructure - emphasizing integration, low LO drive, and industrial temperature reliability.
FAQ
What is the minimum LO drive level required for specified performance of the LTC5549IUDB#TRMPBF?
The LTC5549IUDB#TRMPBF is characterized with 0dBm LO drive and delivers full performance (e.g., +28.2dBm IIP3, 8.0dB conversion loss at 5.8GHz) at this level. It operates over –6dBm to +6dBm LO input power, with degradation outside that range. The integrated LO buffer eliminates need for external driver stages in most implementations.
Can the LTC5549IUDB#TRMPBF be used for both upconversion and downconversion?
Yes, the LTC5549IUDB#TRMPBF is a bidirectional passive mixer core. It functions identically as an upconverter (IF input → RF output) or downconverter (RF input → IF output), with identical AC specifications in both modes per the datasheet's upmixer and downmixer characterization tables.
How does the LO frequency doubler affect conversion loss and linearity in the LTC5549IUDB#TRMPBF?
When the LO frequency doubler is enabled (X2 = High), conversion loss increases by ~0.2–1.1dB and IIP3 decreases by ~0.3–1.2dB across the band (e.g., +27.9dBm vs. +28.2dBm at 5.8GHz). This trade-off enables use of lower-frequency, lower-cost LO sources while maintaining usable dynamic range.
What is the role of the exposed thermal pad (Pin 13) on the LTC5549IUDB#TRMPBF?
The exposed pad (Pin 13) is electrically and thermally connected to GND. It must be soldered to a dedicated PCB ground plane to ensure proper thermal dissipation (θJC = 25°C/W) and maintain RF return loss stability. Omitting this connection risks thermal runaway and degraded high-frequency performance.
Is external matching required for the RF, LO, and IF ports of the LTC5549IUDB#TRMPBF?
Yes - optimal 50Ω matching requires external 0.15pF shunt capacitors placed 1.4mm from RF (Pin 5) and 3.55mm from LO (Pin 11), per the evaluation board layout. The IF port (Pin 2) achieves broadband match without external components, but all ports require DC blocking capacitors due to internal transformer grounding.
LTC5549IUDB#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- RF Type:
- Radar
- Frequency:
- 2GHz ~ 14GHz
- Number of Mixers:
- 2
- Gain:
- -
- Noise Figure:
- 10.4dB
- Secondary Attributes:
- -
- Current - Supply:
- 115mA
- Voltage - Supply:
- 3V ~ 3.6V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-QFN (3x2)
LTC5549IUDB#TRMPBF FAQ
1.How can I place an order for LTC5549IUDB#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC5549IUDB#TRMPBF 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 LTC5549IUDB#TRMPBF reliable?
The price and inventory of LTC5549IUDB#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC5549IUDB#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC5549IUDB#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC5549IUDB#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC5549IUDB#TRMPBF?
LTC5549IUDB#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC5549IUDB#TRMPBF 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 LTC5549IUDB#TRMPBF?
For technical support, including LTC5549IUDB#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC5549IUDB#TRMPBF requirements.
6.How does Aetrix verify that LTC5549IUDB#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC5549IUDB#TRMPBF 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 LTC5549IUDB#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC5549IUDB#TRMPBF?
All LTC5549IUDB#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC5549IUDB#TRMPBF, 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 LTC5549IUDB#TRMPBF part is unused and in its original packaging.
Return procedure for LTC5549IUDB#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC5549IUDB#TRMPBF 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…
