Texas Instruments LMK6DA05184ADLET

Overview

LMK6DA05184ADLET from Texas Instruments is a factory-programmed, ultra-low-jitter BAW-based LVDS oscillator delivering a precise 51.84 MHz differential clock output with ±25 ppm total frequency stability over –40°C to 85°C, 2.5V–3.3V supply, and integrated LDO for supply noise immunity - deployed in 100G/400G optical transport and SERDES reference clocking.

For engineers reviewing the LMK6DA05184ADLET datasheet, LMK6DA05184ADLET pinout, LMK6DA05184ADLET application, or LMK6DA05184ADLET equivalent, key selection criteria include its 100 fs typical RMS jitter (12 kHz–20 MHz), 3.2 mm × 2.5 mm DLE package, Pin 1 Standby (active low) control, and compliance with high-speed serial interface timing budgets including PCIe Gen 5+ and PAM4 systems.

Technical Context

The LMK6DA05184ADLET implements a Bulk-Acoustic Wave (BAW) resonator co-integrated with a high-performance fractional divider and LVDS output driver, enabling fixed-frequency operation without external crystals or loop filters. Its architecture eliminates phase-locked loop (PLL) complexity while maintaining sub-125 fs RMS jitter at 51.84 MHz.

It operates within the LMK6D variant family exclusively - supporting only LVDS output, not HCSL/LVPECL/LVCMOS - and uses a 6-pin VSON (DLE-6) package with dedicated OE/ST control on Pin 1, differential outputs on Pins 4 (OUTP) and 5 (OUTN), power on Pin 6 (VDD), and ground on Pin 3 (GND).

Key Specifications

Pinout & Package

Package: VSON (DLE-6), 3.2 mm × 2.5 mm, 0.5 mm pitch, moisture sensitivity level MSL1 - optimized for space-constrained optical modules and high-density switch PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMK6D04800ADLET, the LMK6DA05184ADLET delivers exact 51.84 MHz alignment for OTN and Ethernet standards; versus Si510-ACA5184A, it provides native LVDS drive, 50 fs lower jitter, and superior PSRR - making it essential for high-speed optical and SerDes applications.

Availability

LMK6DA05184ADLET is available at Aetrix Electronics and suitable for 100G/400G optical transport, PCIe Gen 5 server platforms, and high-density networking equipment requiring stable component supply, consistent parametric performance, and long-lifecycle availability.

Supply support for LMK6DA05184ADLET 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 design expertise spanning over 90 years.

The LMK6x product line was engineered specifically for high-speed serial interface timing - replacing quartz oscillators with integrated BAW technology to deliver ultra-low jitter, small form factor, and robustness in telecom, data center, and test equipment.

FAQ

What is the output type and interface standard supported by the LMK6DA05184ADLET?

The LMK6DA05184ADLET features an LVDS (Low-Voltage Differential Signaling) output compliant with ANSI TIA/EIA-644-A. It delivers a 51.84 MHz differential clock with 250–450 mV swing into a 100 Ω load, 1.025–1.375 V common-mode voltage, and 45–55% duty cycle - designed for direct interfacing with SerDes receivers requiring LVDS-level timing references.

Does the LMK6DA05184ADLET require an external crystal or PLL configuration?

No, the LMK6DA05184ADLET does not require an external crystal or PLL configuration. It integrates a factory-trimmed Bulk-Acoustic Wave (BAW) resonator and fractional divider, delivering a fixed 51.84 MHz LVDS output directly from power-up. All timing parameters are pre-programmed; no external components or register writes are needed for basic operation.

What is the function of Pin 1 on the LMK6DA05184ADLET, and how should it be used?

Pin 1 on the LMK6DA05184ADLET is the Standby (ST) input, active-low. When pulled to GND, it places the device in standby mode, disabling the LVDS outputs and reducing current consumption to 6–13 mA. When left open or pulled high (via pull-up), the oscillator operates normally. This pin enables dynamic power gating in systems requiring low-power idle states.

Is the LMK6DA05184ADLET suitable for PCIe Gen 5 reference clock applications?

Yes, the LMK6DA05184ADLET meets PCIe Gen 5 Common Clock jitter requirements (150 fs RMS limit) with a typical RMS jitter of 100 fs at 51.84 MHz (12 kHz–20 MHz integration bandwidth). Its phase noise profile (–95 dBc/Hz at 1 kHz offset) and 1.6 ps RMS period jitter further validate suitability for PCIe Gen 5 root complex and endpoint timing.

What package type and dimensions does the LMK6DA05184ADLET use?

The LMK6DA05184ADLET uses a VSON package designated DLE-6, measuring 3.2 mm × 2.5 mm with 0.5 mm pin pitch. It has six terminals: Pin 1 (ST), Pin 2 (NC), Pin 3 (GND), Pin 4 (OUTP), Pin 5 (OUTN), and Pin 6 (VDD). The package is rated MSL1 and supports reflow soldering per JEDEC J-STD-020.