Texas Instruments LMK6DA10000ADLFT

Overview

LMK6DA10000ADLFT from Texas Instruments is a factory-programmed, ultra-low-jitter BAW-based LVDS oscillator delivering 100 MHz fixed-frequency output with ±25 ppm total stability over –40°C to 85°C, 2.5V–3.3V supply, and 140 fs RMS jitter (12 kHz–20 MHz). It serves as a high-precision reference clock in SERDES-based optical transport and PCIe Gen 7 systems.

For engineers reviewing the LMK6DA10000ADLFT datasheet, LMK6DA10000ADLFT pinout, LMK6DA10000ADLFT application, or LMK6DA10000ADLFT equivalent, key selection criteria include LVDS output compliance, 100 MHz exact-frequency delivery, sub-150 fs jitter performance, DLF package footprint constraints, and standby-mode power control via Pin 1.

Technical Context

The LMK6DA10000ADLFT integrates a Bulk-Acoustic Wave (BAW) resonator directly into its VSON package, eliminating external crystal dependency while enabling single-chip, factory-trimmed 100 MHz generation. Its fractional divider architecture supports precise frequency synthesis without external PLL components.

It features an active-low Standby (ST) function on Pin 1, integrated LDO for –72 dBc PSRR at 500 kHz, and differential LVDS output with 250–450 mV swing under standard load. Start-up time is <5 ms, and it operates across full industrial temperature range with no re-trimming required.

Key Specifications

Pinout & Package

LMK6DA10000ADLFT uses a 6-pin VSON (DLF) package measuring 2.5 mm × 2.0 mm with wettable flanks. Pin 1 is Standby (active low), Pins 4 and 5 deliver complementary LVDS outputs, Pin 6 supplies VDD, and Pin 3 is GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-frequency oscillator applications.

Compared with LMK6DA10000ADLFT, LMK6D0E10000ADLFT offers identical timing performance but incompatible control logic, while Si510-100.000M-AG trades differential integrity and sub-150 fs jitter for lower cost and simpler interface - neither is pin-compatible nor functionally interchangeable without redesign.

Availability

LMK6DA10000ADLFT is available at Aetrix Electronics and suitable for 56G/112G PAM4 clocking, PCIe Gen 7 reference designs, and optical transport network equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for LMK6DA10000ADLFT 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 high-performance timing solutions, with manufacturing and test facilities across North America, Asia, and Europe.

The LMK6x product line was designed specifically for high-speed digital systems requiring crystal-free, ultra-low-jitter clock generation - targeting SERDES, optical networking, and next-generation compute interconnects.

FAQ

What is the exact output frequency of the LMK6DA10000ADLFT?

The LMK6DA10000ADLFT is factory-programmed to deliver precisely 100.000 MHz. This fixed frequency is laser-trimmed during production and does not require external configuration or software initialization. The device maintains this output across its full operating temperature and voltage range with ±25 ppm total stability, including 10-year aging effects.

Does the LMK6DA10000ADLFT support LVDS termination and what are the load requirements?

Yes, the LMK6DA10000ADLFT drives standard LVDS loads: a 100 Ω differential termination between OUTP and OUTN. It delivers 250–450 mV differential swing and 1.025–1.375 V common-mode voltage under these conditions. No external biasing resistors are needed - the internal current sources and common-mode regulation handle full compliance with ANSI TIA/EIA-644-A.

How does the Standby (ST) function operate on the LMK6DA10000ADLFT?

Pin 1 of the LMK6DA10000ADLFT is an active-low Standby input. When pulled low (≤0.6 V), the device enters standby mode, disabling both LVDS outputs and reducing supply current to ≤13 mA. When high (≥1.3 V), normal operation resumes with <5 ms start-up time. Pin 2 is NC and must remain unconnected.

What is the RMS jitter performance of the LMK6DA10000ADLFT at 100 MHz?

At 100 MHz output, the LMK6DA10000ADLFT achieves 140 fs maximum RMS jitter over the 12 kHz to 20 MHz integration bandwidth. This value is measured under recommended operating conditions (VDD = 3.3 V, TA = 25°C) and meets PCIe Gen 7 common-clock jitter specification (67 fs limit) with significant margin when used with proper PCB layout and decoupling.

Is the LMK6DA10000ADLFT compatible with automated optical inspection (AOI) and reflow processes?

Yes, the LMK6DA10000ADLFT is packaged in a RoHS-compliant, MSL1-rated VSON (DLF) package with wettable flanks, fully compatible with standard lead-free reflow profiles (J-STD-020) and AOI systems. Its 2.5 mm × 2.0 mm footprint and exposed paddle support reliable solder joint formation and automated post-reflow inspection.