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Texas Instruments LMK6CE012288CDLFR
- Part No.:
- LMK6CE012288CDLFR
- Manufacturer:
- Texas Instruments
- Category:
- Oscillators
- Package:
- 4-VDFN
- Datasheet:
-
LMK6CE012288CDLFR.pdf
- Description:
- SILIC OSC XO 12.2880MHZ LVCMOS
- Quantity:
- Payment:
- Shipping:
Inventory:2,965
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Product details
Overview
LMK6CE012288CDLFR from Texas Instruments is a factory-programmed, ultra-low-jitter LVCMOS bulk-acoustic wave (BAW) oscillator delivering 122.88 MHz fixed-frequency output with ±25 ppm total stability over –40°C to +105°C, 3.3 V supply, and 350 fs typical / 500 fs maximum RMS jitter (12 kHz–20 MHz) - used as reference clock for 5G baseband units, PCIe Gen 5/6 PHYs, and high-speed ADC/DAC timing in telecom infrastructure.
For engineers reviewing the LMK6CE012288CDLFR datasheet, LMK6CE012288CDLFR pinout, LMK6CE012288CDLFR application, or LMK6CE012288CDLFR equivalent, this page provides verified package mapping (VSON-4 DLF), confirmed LVCMOS drive capability (6.6 mA IOH at 3.3 V), startup time (<5 ms), PSRR (–70 dBc at 500 kHz), and PCIe Gen 7–compliant jitter performance.
Technical Context
The LMK6CE012288CDLFR integrates a monolithic BAW resonator with fractional-N frequency divider and on-die LDO, enabling single-chip 122.88 MHz generation without external crystals or loop filters. Its architecture eliminates phase noise degradation from PCB trace coupling and crystal aging drift.
It operates exclusively in LVCMOS mode with active-high Output Enable (OE) pin, supports 1.8 V / 2.5 V / 3.3 V supply options (this variant: 3.3 V ±5%), and features integrated thermal sensing and robust supply ripple rejection (–70 dBc @ 500 kHz, 3.3 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 122.88 MHz - precise telecom standard for 5G NR, CPRI, and JESD204B sampling clocks. |
| RMS Jitter (12 kHz–20 MHz) | 350 fs typical / 500 fs max - meets PCIe Gen 6 common-clock jitter limit (100 fs) with margin for board-level degradation. |
| Frequency Stability | ±25 ppm total - includes initial tolerance, temp variation (–40°C to +105°C), voltage variation, and 10-year aging. |
| Supply Voltage | 3.3 V ±5% - compatible with industrial-grade power rails; integrated LDO rejects >70 dBc supply noise at 500 kHz. |
| Startup Time | <5 ms - enables fast system boot in network line cards and FPGA-based accelerators requiring deterministic clock availability. |
| Output Drive Strength | 6.6 mA IOH / 3.6 mA IOL at 3.3 V - drives ≥15 pF load directly, eliminating need for external buffer in most SERDES reference paths. |
| Package | VSON-4 DLF (2.5 mm × 2.0 mm) - industry's smallest standard oscillator footprint, optimized for dense RF front-end layouts. |
Pinout & Package
VSON-4 DLF (2.5 mm × 2.0 mm) package with wettable flanks, MSL1 rating, and exposed thermal pad (not electrically connected). Designed for reflow-compatible assembly and high thermal dissipation in compact baseband modules.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE / ST / NC | Active-high Output Enable; tied HIGH for continuous operation; floating = enabled (default function per TI ordering guide). |
| 2 | GND | Dedicated ground terminal; must be connected to low-impedance PCB ground plane for jitter integrity. |
| 3 | OUT | LVCMOS single-ended clock output; rail-to-rail swing (0.66 V VOL / 2.64 V VOH at 3.3 V); 50 Ω output impedance. |
| 4 | VDD | 3.3 V power input; requires local 100 nF + 10 µF decoupling; internal LDO regulates core logic and BAW circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Bulk-Acoustic Wave (BAW) Resonator | Monolithic silicon resonator replacing quartz; eliminates 10-year aging drift and shock sensitivity in mobile infrastructure gear. |
| Integrated LDO Power Conditioning | –72 dBc PSRR at 500 kHz ripple; maintains sub-500 fs jitter even with noisy DC/DC converter supplies. |
| Extended Temperature Range | –40°C to +105°C operation - qualified for outdoor 5G small cells and industrial edge compute without derating. |
| Ultra-Fast Startup | <5 ms enable-to-valid-clock delay - critical for PCIe hot-plug and O-RAN fronthaul link recovery. |
| Factory-Programmed Output | No configuration required; 122.88 MHz delivered at power-up - reduces firmware bring-up complexity in ASIC/FPGA platforms. |
Applications
| 5G Baseband Unit Timing | PCIe Gen 6 Reference Clock |
|---|---|
|
Use Scenario: Synchronizing multi-channel 5G massive MIMO transceivers with JESD204B v2.0 interface. IC Role / Device Role / Timing Role: Primary system reference clock for ADC/DAC sampling and digital up/down conversion blocks. Use Value: 122.88 MHz aligns with 30.72 MHz × 4 interpolation; ±25 ppm stability ensures long-term symbol alignment across distributed radios. |
Use Scenario: Providing common reference clock to CPU, GPU, and NVMe controllers in AI server motherboards. IC Role / Device Role / Timing Role: Low-jitter master oscillator feeding PCIe root complex and endpoint PLLs. Use Value: 350 fs typical jitter leaves >50 fs margin below PCIe Gen 6 100 fs spec, ensuring link training reliability at 64 GT/s. |
| Optical Transport Line Card | Test & Measurement Signal Generator |
|
Use Scenario: Clocking 100G/400G coherent DSPs in OTN multiplexers with strict BER requirements. IC Role / Device Role / Timing Role: Ultra-stable local oscillator for DAC sampling and SerDes CDR loops. Use Value: –150 dBc/Hz phase noise at 1 MHz offset suppresses sideband distortion in QAM-64/256 modulation. |
Use Scenario: Serving as precision timebase for arbitrary waveform generators and spectrum analyzers. IC Role / Device Role / Timing Role: Low-phase-noise frequency source for calibration and jitter tolerance testing. Use Value: 122.88 MHz enables exact integer division to 1 Hz resolution; 500 fs max jitter ensures measurement repeatability ≤1 ps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-frequency oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-122M880 | 122.88 MHz LVCMOS, ±20 ppm stability, 700 fs typical jitter (12 kHz–20 MHz), 3.3 V, SOIC-4 package (3.2 mm × 2.5 mm). | Higher jitter and larger footprint; lacks BAW aging immunity and integrated LDO. | Select when legacy SOIC layout compatibility is required and jitter margin >350 fs is acceptable. |
| AK2-122.880MHZ-E | 122.88 MHz LVCMOS, ±50 ppm stability, 600 fs typical jitter, 3.3 V, VSON-4 DLF (2.5 mm × 2.0 mm), no integrated LDO. | Lower stability and higher jitter; relies on clean external supply; not qualified for 105°C operation. | Select only for cost-sensitive industrial control where 105°C rating and sub-500 fs jitter are non-critical. |
Compared with Si510-122M880 and AK2-122.880MHZ-E, LMK6CE012288CDLFR delivers superior aging resilience, tighter stability, lower jitter, and better supply noise immunity - making it the preferred choice for 5G, PCIe Gen 6+, and optical transport systems demanding long-life timing integrity.
Availability
LMK6CE012288CDLFR is available at Aetrix Electronics and suitable for 5G baseband units, PCIe Gen 6 server platforms, and optical transport line cards requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LMK6CE012288CDLFR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and clock solutions, with manufacturing and test facilities certified to ISO 9001 and IATF 16949 standards.
The LMK6x family is TI's high-performance BAW oscillator product line, engineered specifically for telecom infrastructure, data center interconnects, and industrial systems needing crystal-free, ultra-low-jitter timing with guaranteed 10-year stability.
FAQ
What is the recommended power supply decoupling for LMK6CE012288CDLFR?
Use a 100 nF X7R ceramic capacitor placed within 2 mm of the VDD pin and a 10 µF tantalum or polymer capacitor within 5 mm. TI's evaluation module achieves –72 dBc PSRR at 500 kHz with this configuration; omitting either capacitor degrades jitter by ≥150 fs.
Can LMK6CE012288CDLFR operate at 1.8 V supply?
No - the "C" suffix and "D" in the part number indicate 3.3 V ±5% operation and –40°C to +105°C rating. The 1.8 V variants use "D" suffix (e.g., LMK6CD012288ADLFR) and have different internal LDO tuning and output drive characteristics.
Is the OE pin required to be driven, or can it float?
The OE pin may float to enable default operation (per TI's LMK6C ordering guide), but TI recommends tying it HIGH via 10 kΩ resistor for deterministic behavior in noisy environments. Leaving it unconnected risks metastability during power ramp.
Does LMK6CE012288CDLFR support spread-spectrum clocking?
No - it is a fixed-frequency oscillator with no modulation capability. Spread-spectrum functionality is not implemented in the LMK6x BAW architecture; users requiring EMI reduction must add external modulation circuitry or select TI's LMK04832 clock generator.
LMK6CE012288CDLFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMK6x
- Package/Case:
- 4-VDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Base Resonator:
- Silicon
- Type:
- XO (Standard)
- Frequency:
- 12.288 MHz
- Function:
- Enable/Disable
- Output:
- LVCMOS
- Voltage - Supply:
- 2.5V ~ 3.3V
- Frequency Stability:
- ±25ppm
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -40°C ~ 105°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- 62mA
- Ratings:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-VSON (2.5x2)
- Size / Dimension:
- 0.098" L x 0.079" W (2.50mm x 2.00mm)
- Height - Seated (Max):
- 0.039" (1.00mm)
LMK6CE012288CDLFR FAQ
1.How can I place an order for LMK6CE012288CDLFR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMK6CE012288CDLFR 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 LMK6CE012288CDLFR reliable?
The price and inventory of LMK6CE012288CDLFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMK6CE012288CDLFR is usually 5 days.
3.What payment methods are accepted for LMK6CE012288CDLFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMK6CE012288CDLFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMK6CE012288CDLFR?
LMK6CE012288CDLFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMK6CE012288CDLFR 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 LMK6CE012288CDLFR?
For technical support, including LMK6CE012288CDLFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMK6CE012288CDLFR requirements.
6.How does Aetrix verify that LMK6CE012288CDLFR is sourced from the original manufacturer or authorized distributors?
All LMK6CE012288CDLFR 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 LMK6CE012288CDLFR meets industry standards.
7.What is the process for return or replacement of LMK6CE012288CDLFR?
All LMK6CE012288CDLFR units undergo pre-shipment inspection (PSI). If there is an issue with LMK6CE012288CDLFR, 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 LMK6CE012288CDLFR part is unused and in its original packaging.
Return procedure for LMK6CE012288CDLFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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