Analog Devices Inc. LTC6930CMS8-7.37#TRPBF

Overview

LTC6930CMS8-7.37#TRPBF from Analog Devices (formerly Linear Technology) is a digitally controlled silicon oscillator with factory-set 7.3728MHz master frequency, selectable via DIVA/DIVB/DIVC pins across eight output frequencies from 57.6kHz to 7.3728MHz. It delivers ±0.1% frequency accuracy over –40°C to 85°C, 105–453µA supply current (depending on DIV setting and V+), and <110µs start-up time. It serves as a precision clock source in low-power microcontroller systems requiring stable timing without external crystals.

For engineers reviewing the LTC6930CMS8-7.37#TRPBF datasheet, LTC6930CMS8-7.37#TRPBF pinout, LTC6930CMS8-7.37#TRPBF application, or LTC6930CMS8-7.37#TRPBF equivalent, key selection criteria include its 8-pin MSOP package, 1.7V–5.5V single-supply operation, ±0.1% temperature-stable accuracy, sub-110µs power-on delay, and RMS period jitter under 0.97ns at 7.3728MHz.

Technical Context

The LTC6930CMS8-7.37#TRPBF implements a proprietary switched-capacitor feedback loop to stabilize its internal 7.3728MHz master oscillator across voltage and temperature. Its three digital DIV inputs (DIVA/DIVB/DIVC) configure a binary divider (1–128) to generate any of eight precise output frequencies - including 7.3728MHz, 3.6864MHz, and down to 57.6kHz - without external components.

It features dual V+ pins (1 and 8) and dual GND pins (2 and 6) to isolate the oscillator core from output switching noise. The CMOS output driver has 40Ω typical series resistance, 3ns rise/fall time, and supports up to 50pF capacitive or 1kΩ resistive load while maintaining <0.15% RMS jitter at 3V.

Key Specifications

Pinout & Package

Package: 8-Lead Plastic MSOP (3.00mm × 4.90mm), RoHS-compliant, lead-free finish. Exposed pad not present (unlike DFN variant).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally controlled oscillator applications.

Compared with SiT1533AI-H4-33E-32.768D and MAX7375ETE+, the LTC6930CMS8-7.37#TRPBF uniquely combines factory-programmed 7.3728MHz base frequency, 8-way digital division, ±0.1% accuracy over industrial temperature, and sub-110µs start-up - making it optimal for cost-sensitive, battery-powered systems needing flexible, crystal-free timing with guaranteed jitter and latency specs.

Availability

LTC6930CMS8-7.37#TRPBF is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, smart energy meters, and microprocessor clocking applications requiring stable component supply across extended production lifecycles.

Supply support for LTC6930CMS8-7.37#TRPBF 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

Analog Devices acquired Linear Technology in 2017 and continues to manufacture and support its precision analog and timing portfolio.

The LTC6930 series belongs to Linear's precision µPower oscillator product line, designed specifically for battery-operated and space-constrained systems where crystal replacement, low supply current, and fast wake-up timing are critical system requirements.

FAQ

What is the nominal master oscillator frequency of the LTC6930CMS8-7.37#TRPBF?

The LTC6930CMS8-7.37#TRPBF has a factory-programmed master oscillator frequency of exactly 7.372800MHz. This value is fixed and non-adjustable; the device uses internal dividers (1–128) controlled by DIVA/DIVB/DIVC pins to generate eight output frequencies ranging from 57.6kHz to 7.3728MHz, as defined in Table 1 of the datasheet.

Does the LTC6930CMS8-7.37#TRPBF require external load capacitors like a crystal oscillator?

No, the LTC6930CMS8-7.37#TRPBF does not require external load capacitors. It is a fully integrated silicon oscillator with no external resonator. Only standard 0.1µF ceramic bypass capacitors between each V+ pin (1 and 8) and its adjacent GND pin (2 and 6) are required for stable operation - eliminating crystal matching, PCB layout sensitivity, and aging-related frequency drift inherent in quartz solutions.

What is the maximum capacitive load the OUT pin of the LTC6930CMS8-7.37#TRPBF can drive reliably?

The OUT pin of the LTC6930CMS8-7.37#TRPBF is characterized to drive up to 50pF capacitive load with minimal degradation in jitter and start-up time. The datasheet specifies performance at 5pF (equivalent to two HC logic inputs), but application notes confirm robust operation at 50pF when using proper local 0.1µF V+/GND decoupling. Driving >50pF may increase supply current and RMS jitter beyond guaranteed limits.

Can the DIV pins of the LTC6930CMS8-7.37#TRPBF be changed dynamically during operation?

Yes, the DIVA, DIVB, and DIVC pins of the LTC6930CMS8-7.37#TRPBF can be reconfigured dynamically during operation. The device guarantees glitch-free transitions: the output responds within one full clock cycle of the new DIV setting, with no runt pulses, metastability, or frequency spurs - enabling runtime clock scaling in adaptive power management systems.

What is the long-term frequency stability specification for the LTC6930CMS8-7.37#TRPBF?

The LTC6930CMS8-7.37#TRPBF has a typical long-term frequency stability of 30ppm/√kHr, measured at 30°C under continuous power. This translates to approximately 0.0198% drift over 5 years of continuous operation. Drift without power applied is estimated at ~1/10th of powered drift (3ppm/√kHr), making it significantly more stable than standard RC oscillators but less so than oven-controlled crystal oscillators (OCXOs).