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Texas Instruments LMK6CE02500DDLFT
- Part No.:
- LMK6CE02500DDLFT
- Manufacturer:
- Texas Instruments
- Category:
- Oscillators
- Package:
- 4-VDFN
- Datasheet:
-
LMK6CE02500DDLFT.pdf
- Description:
- SILIC OSC XO 25.0000MHZ LVCMOS
- Quantity:
- Payment:
- Shipping:
Inventory:4,616
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Product details
Overview
LMK6CE02500DDLFT from Texas Instruments is a factory-programmed, ultra-low-jitter LVCMOS BAW oscillator delivering 25 MHz output at 1.8 V supply, rated for –40°C to 105°C operation in the compact 2.5 mm × 2.0 mm DLF VSON package. It serves as a high-stability reference clock for FPGA configuration, industrial MCU timing, and PCIe Gen 1–7 compliant systems requiring tight frequency stability and low power.
For engineers reviewing the LMK6CE02500DDLFT datasheet, LMK6CE02500DDLFT pinout, LMK6CE02500DDLFT application, or LMK6CE02500DDLFT equivalent, key selection criteria include its ±25 ppm total frequency stability over temperature and aging, 350 fs typical RMS jitter (12 kHz–20 MHz) at 100 MHz, 1.8 V operation, 4-pin DLF package, and Output Enable (Pin 1, active-high) control function.
Technical Context
The LMK6CE02500DDLFT integrates a Bulk-Acoustic Wave (BAW) resonator with a fractional frequency divider and integrated LDO, enabling fixed-frequency precision without external crystals. Its architecture supports single-ended LVCMOS output only, with no differential signaling capability.
It operates exclusively in the LMK6C variant family, limited to 1–200 MHz output range and –40°C to 105°C extended industrial temperature grade. Pin 1 functions as Output Enable (active-high), and the device features <5 ms start-up time and –70 dBc PSRR at 500 kHz ripple on 1.8 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 25 MHz - factory-programmed, stable reference for synchronous logic and SERDES PHY layers |
| Output Type | LVCMOS - single-ended, rail-to-rail compatible with 1.8 V logic families and FPGA I/O banks |
| Supply Voltage | 1.8 V ±5% - enables low-power operation in battery-backed or energy-constrained industrial systems |
| Frequency Stability | ±25 ppm - includes initial tolerance, temp drift (–40°C to 105°C), voltage variation, and 10-year aging |
| RMS Jitter (12 kHz–20 MHz) | 350 fs typical at 100 MHz - meets PCIe Gen 5+ and 100G Ethernet clocking requirements |
| Start-up Time | <5 ms - ensures rapid system boot and deterministic timing initialization after power-on |
| Package | DLF VSON-4 (2.5 mm × 2.0 mm) - ultra-small footprint for space-constrained PCBs and high-density modules |
| Operating Temperature | –40°C to 105°C - qualified for extended industrial environments including base stations and motor drives |
Pinout & Package
LMK6CE02500DDLFT uses a 4-pin VSON (DLF-4) package measuring 2.5 mm × 2.0 mm with wettable flanks. Pin 1 is Output Enable (active-high), Pin 2 is GND, Pin 3 is LVCMOS clock output, and Pin 4 is VDD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE / ST / NC) | Input (active-high enable) | Drives output when pulled high; output disabled (high-impedance) when low or floating |
| 2 (GND) | Ground reference | Primary return path for internal circuitry and output driver; requires low-inductance connection |
| 3 (OUT) | LVCMOS clock output | Single-ended 1.8 V rail-to-rail square wave; drives ≤15 pF load at >50 MHz |
| 4 (VDD) | Power supply input | 1.8 V ±5% supply with integrated LDO; decoupling capacitor required per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Bulk-Acoustic Wave (BAW) resonator | Enables crystal-free, monolithic integration with sub-picosecond jitter performance and mechanical shock immunity |
| Integrated LDO | Delivers –72 dBc PSRR at 500 kHz ripple, reducing sensitivity to noisy system rails and eliminating external regulators |
| Extended temperature grade | –40°C to 105°C operation validated across full voltage and frequency range, suitable for under-hood or enclosed industrial use |
| Ultra-small DLF package | 2.5 mm × 2.0 mm footprint saves >40% board area vs. legacy 3.2 mm × 2.5 mm oscillators while maintaining thermal reliability |
| Factory-programmed configuration | No external programming required - frequency, voltage, output type, and OE function are permanently set during manufacturing |
| Fast output enable/disable | 25 µs enable time and 1 µs disable time allow dynamic clock gating for power management in real-time systems |
Applications
| Industrial Motor Drives | FPGA Configuration Timing |
|---|---|
|
Use Scenario: Synchronous PWM generation and encoder feedback sampling in servo drives operating at 105°C ambient. IC Role / Device Role / Timing Role: Primary system clock source for real-time MCU and gate driver ICs, ensuring deterministic interrupt latency and phase alignment. Use Value: ±25 ppm stability and 350 fs jitter prevent timing skew across multi-axis control loops, improving position accuracy and torque ripple suppression. |
Use Scenario: Power-on configuration of Xilinx Kintex Ultrascale+ FPGAs in 5G radio units with strict boot-time constraints. IC Role / Device Role / Timing Role: Dedicated 25 MHz LVCMOS clock feeding FPGA configuration interface (e.g., SelectMAP or JTAG), meeting setup/hold timing under 1.8 V I/O standards. Use Value: <5 ms start-up time guarantees FPGA configuration completes before watchdog timeout; DLF package enables placement near BGA ball-out zones. |
| PCIe Gen 5 Reference Clock | Optical Transport Line Cards |
|
Use Scenario: Providing common clock to PCIe Gen 5 switch ASICs in telecom edge servers where EMI and thermal density are critical. IC Role / Device Role / Timing Role: Low-jitter 25 MHz reference used to generate PCIe 32 GT/s lanes via internal PLLs; must meet Gen 5 SRNS jitter limit of 150 fs. Use Value: 350 fs typical RMS jitter at 100 MHz extrapolates to well below 150 fs at 25 MHz, enabling margin-rich compliance without external jitter cleaners. |
Use Scenario: Timing reference for 100G/400G coherent DSPs in CFP2-ACO modules deployed in outdoor optical line terminals. IC Role / Device Role / Timing Role: Stable 25 MHz clock synchronizing ADC/DAC sampling and forward error correction engines across multiple DSP cores. Use Value: BAW technology provides immunity to vibration and thermal cycling, maintaining ±25 ppm stability over 10 years without crystal aging drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-frequency oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMK6CE02500DLEFT | Same LMK6C family, identical 25 MHz LVCMOS output and 1.8 V operation, but in larger 3.2 mm × 2.5 mm DLE package | Requires more PCB area; slightly better thermal resistance (RθJA = 124.8°C/W vs. 128.1°C/W), but same electrical specs | Select when board layout allows larger footprint and thermal margin is prioritized over space savings |
| Si510-250F-25M000000 | 25 MHz LVCMOS oscillator from Silicon Labs; ±20 ppm stability, 1.8 V, 2.5 mm × 2.0 mm QFN; uses MEMS resonator | Lower frequency stability (±20 ppm vs. ±25 ppm inclusive of aging); higher typical jitter (500 fs vs. 350 fs at 100 MHz) | Choose when cost sensitivity outweighs jitter and long-term aging requirements; verify MEMS shock robustness for target environment |
Compared with LMK6CE02500DLEFT and Si510-250F-25M000000, the LMK6CE02500DDLFT delivers superior jitter performance and guaranteed 10-year aging inclusion in its ±25 ppm spec, while occupying the smallest standard footprint - making it optimal for thermally dense, high-reliability industrial and telecom designs where board space and timing margin are constrained.
Availability
LMK6CE02500DDLFT is available at Aetrix Electronics and suitable for industrial motor drives, FPGA configuration timing, PCIe Gen 5 reference clocking, optical transport line cards, and high-reliability embedded systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LMK6CE02500DDLFT 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 company specializing in analog, embedded processing, and clock solutions, with vertically integrated manufacturing and design expertise in high-performance timing devices.
The LMK6C product line was engineered specifically for replacing quartz-based oscillators in high-speed digital systems, delivering ultra-low jitter, extended temperature operation, and monolithic BAW integration for SERDES, networking, and industrial control applications.
FAQ
What is the output enable behavior of the LMK6CE02500DDLFT?
The LMK6CE02500DDLFT uses Pin 1 as an active-high Output Enable (OE) input. When OE is pulled high (≥1.3 V), the LVCMOS output is active; when OE is low (≤0.6 V) or left floating, the output enters high-impedance state. This enables dynamic clock gating in power-sensitive applications without requiring external switches or buffers. The LMK6CE02500DDLFT supports 25 µs enable and 1 µs disable timing.
Does the LMK6CE02500DDLFT require external configuration or programming?
No, the LMK6CE02500DDLFT is factory-programmed with fixed 25 MHz output, 1.8 V supply, LVCMOS output type, and Pin 1 Output Enable functionality. No external EEPROM, I²C interface, or configuration pins are present. All timing parameters, including ±25 ppm stability and 350 fs typical jitter, are guaranteed at shipment - eliminating field programming complexity and qualification overhead for the LMK6CE02500DDLFT.
Can the LMK6CE02500DDLFT operate at frequencies other than 25 MHz?
No - the LMK6CE02500DDLFT is a fixed-frequency device programmed exclusively for 25 MHz output. While the broader LMK6C family supports 1–200 MHz, each part number (e.g., LMK6CE02500DDLFT) is laser-trimmed and tested at its specific frequency. Attempting to use the LMK6CE02500DDLFT outside its specified 25 MHz output violates datasheet guarantees and voids jitter, stability, and timing specifications.
What is the maximum capacitive load the LMK6CE02500DDLFT can drive?
The LMK6CE02500DDLFT supports up to 15 pF capacitive load for output frequencies above 50 MHz, and up to 30 pF for frequencies below 50 MHz. At its 25 MHz output, the LMK6CE02500DDLFT can reliably drive up to 30 pF, accommodating typical PCB trace capacitance plus FPGA or ASIC input capacitance without signal integrity degradation or duty cycle distortion.
How does the LMK6CE02500DDLFT achieve ±25 ppm frequency stability over 10 years?
The LMK6CE02500DDLFT achieves ±25 ppm total stability by integrating a Bulk-Acoustic Wave (BAW) resonator with no aging mechanism - unlike quartz crystals, BAW devices exhibit negligible long-term drift. This specification includes initial tolerance, temperature variation (–40°C to 105°C), supply voltage deviation (±5%), solder shift, and 10-year aging - all validated during LMK6CE02500DDLFT production testing and lifetime characterization.
LMK6CE02500DDLFT 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:
- 25 MHz
- Function:
- Enable/Disable
- Output:
- LVCMOS
- Voltage - Supply:
- 1.8V
- Frequency Stability:
- ±25ppm
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -40°C ~ 105°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- 59mA
- 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)
LMK6CE02500DDLFT FAQ
1.How can I place an order for LMK6CE02500DDLFT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMK6CE02500DDLFT 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 LMK6CE02500DDLFT reliable?
The price and inventory of LMK6CE02500DDLFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMK6CE02500DDLFT is usually 5 days.
3.What payment methods are accepted for LMK6CE02500DDLFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMK6CE02500DDLFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMK6CE02500DDLFT?
LMK6CE02500DDLFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMK6CE02500DDLFT 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 LMK6CE02500DDLFT?
For technical support, including LMK6CE02500DDLFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMK6CE02500DDLFT requirements.
6.How does Aetrix verify that LMK6CE02500DDLFT is sourced from the original manufacturer or authorized distributors?
All LMK6CE02500DDLFT 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 LMK6CE02500DDLFT meets industry standards.
7.What is the process for return or replacement of LMK6CE02500DDLFT?
All LMK6CE02500DDLFT units undergo pre-shipment inspection (PSI). If there is an issue with LMK6CE02500DDLFT, 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 LMK6CE02500DDLFT part is unused and in its original packaging.
Return procedure for LMK6CE02500DDLFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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