LMX2581ESQX/NOPB Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock
Texas Instruments LMX2581ESQX/NOPB is a wideband frequency synthesizer with integrated VCO covering up to 3800 MHz, featuring a PLL and clean clock output in a 32-pin WQFN package rated from -40 to 85°C. From $12.50 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- ACTIVE
- Datasheet
- LMX2581ESQX/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.8600(MOQ 500)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LMX2581ESQX/NOPB?
- Integrated VCO covering output frequencies up to 3800 MHz, eliminating the need for an external oscillator in wideband RF synthesis designs
- Phase-locked loop architecture with low-noise fractional-N divider achieving sub-picosecond jitter for high-purity clock generation
- 32-pin WQFN package with exposed heat-slug rated from -40°C to 85°C supporting compact RF module assembly across industrial temperature ranges
What is LMX2581ESQX/NOPB used for?
The LMX2581ESQX/NOPB is designed for RF test equipment, wireless base stations, and software-defined radios that require a clean, programmable frequency source from a few hundred MHz up to 3800 MHz. Its integrated VCO and low-phase-noise PLL make it suitable for radar front ends, satellite communication receivers, and broadband frequency agile systems. The wide tuning range and -40 to 85°C operating temperature also support industrial instrumentation and automotive infotainment applications.
What are the specifications of LMX2581ESQX/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | PHASE LOCKED LOOP |
| JESD-30 Code | S-PQCC-N32 |
| JESD-609 Code | e3 |
| Output Frequency-Max | 3800MHz |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC32,.2SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the LMX2581ESQX/NOPB datasheet?
LMX2581ESQX/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LMX2581ESQX/NOPB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum output frequency of the LMX2581ESQX/NOPB, and what RF systems does this frequency range serve?
The LMX2581ESQX/NOPB synthesizes output frequencies up to 3800 MHz with its integrated VCO. This range covers 2G, 3G, and 4G LTE cellular bands, 2.4 GHz ISM wireless links, and the S-band used in radar and satellite communication systems, making it a single-chip solution for multi-standard RF front-end designs.
How does the 32-pin WQFN package affect thermal management when the LMX2581ESQX/NOPB is used in high-frequency applications?
The 32-pin WQFN package includes an exposed thermal pad on the bottom that provides a low-resistance heat path to the PCB ground plane. Connecting this pad to a copper pour with multiple thermal vias keeps junction temperature below the 85°C maximum even when the device operates at full 3800 MHz output frequency, ensuring reliable long-term performance without an external heatsink.
When is the LMX2581ESQX/NOPB a better choice than a discrete VCO plus external PLL for a frequency-agile design?
The LMX2581ESQX/NOPB integrates both the VCO and PLL in a single 32-pin WQFN die, reducing BOM count by at least 10 to 15 components and cutting PCB area compared to a discrete VCO and PLL combination. This integration also reduces RF board interconnect length, which improves phase noise by minimizing parasitic coupling between VCO tank and loop-filter elements at frequencies up to 3800 MHz.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $6.6000 | $3300.00 |
| 1000+ | $6.2300 | $6230.00 |
| 10000+ | $5.8600 | $58600.00 |
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