Analog Devices Inc. LTC6930IDCB-5.00#TRMPBF

Overview

LTC6930IDCB-5.00#TRMPBF from Analog Devices (acquired Linear Technology) is a digitally controlled silicon oscillator with factory-set 5.000000MHz master frequency, selectable via DIVA/DIVB/DIVC pins across 8 output frequencies from 39.0625kHz to 5.000MHz, ±0.1% frequency accuracy over –40°C to 85°C, 105µA typical supply current at 32kHz/3V, and <110µs start-up time - ideal for low-power microcontroller clocking in portable instrumentation.

For engineers reviewing the LTC6930IDCB-5.00#TRMPBF datasheet, LTC6930IDCB-5.00#TRMPBF pinout, LTC6930IDCB-5.00#TRMPBF application, or LTC6930IDCB-5.00#TRMPBF equivalent, key selection criteria include guaranteed ±0.1% initial accuracy at –40°C to 85°C, DFN-8 (2mm × 3mm) package with exposed thermal pad, 1.7V–5.5V single-supply operation, and deterministic single-cycle DIV pin switching without runt pulses.

Technical Context

The LTC6930IDCB-5.00#TRMPBF implements a proprietary switched-capacitor feedback loop to stabilize its internal 5.000000MHz master oscillator against temperature and supply variation. Its digital control architecture uses three CMOS input pins (DIVA/DIVB/DIVC) to select binary division ratios from 1 to 128, generating eight precise output frequencies without external components.

It features dual V+ pins (Pins 1 and 8) and dual GND pins (Pins 2 and 6) to isolate the output driver path from the control loop, minimizing deterministic jitter. The 40Ω CMOS output driver delivers controlled 3ns rise/fall times into 5pF loads while maintaining <0.15% RMS period jitter at 3V supply.

Key Specifications

Pinout & Package

Package: 8-lead (2mm × 3mm) plastic DFN (DCB), with exposed thermal pad (Pin 9) requiring solder connection to PCB ground plane per LTC DWG #05-08-1718 Rev A.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SiT1533AI-H4-33E-32.768D and MAX7375EKA+T, the LTC6930IDCB-5.00#TRMPBF uniquely balances programmable frequency selection, ±0.1% industrial-grade accuracy, sub-200µA active current, and DFN-8 integration - making it optimal for single-clock, battery-constrained systems needing flexible timing without external components.

Availability

LTC6930IDCB-5.00#TRMPBF is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, and smart utility meters requiring stable component supply with guaranteed –40°C to +85°C operation and long-term production continuity.

Supply support for LTC6930IDCB-5.00#TRMPBF 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, Inc. (ADI) is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies.

The LTC6930 series was developed by Linear Technology (acquired by ADI in 2017) specifically for battery-operated systems demanding precision timing with ultralow quiescent current and minimal board space - targeting portable instrumentation, IoT edge nodes, and energy-harvesting applications.

FAQ

What is the guaranteed frequency accuracy of the LTC6930IDCB-5.00#TRMPBF over its operating temperature range?

The LTC6930IDCB-5.00#TRMPBF guarantees ±0.1% initial frequency accuracy over its full specified operating temperature range of –40°C to +85°C. This is a maximum limit, not a typical value, and applies to all eight selectable output frequencies derived from the 5.000000MHz master oscillator. Accuracy degrades to ±0.65% at the extended –40°C to +125°C range (H-grade), but the IDCB variant is rated only to +85°C.

Can the LTC6930IDCB-5.00#TRMPBF generate frequencies outside the eight values listed in Table 1?

No - the LTC6930IDCB-5.00#TRMPBF can only produce the eight discrete frequencies defined by dividing its factory-programmed 5.000000MHz master oscillator by integer powers of two (N = 1, 2, 4, 8, 16, 32, 64, 128), yielding outputs from 39.0625kHz to 5.000MHz. Custom frequencies require factory programming of a different master oscillator (e.g., LTC6930-4.19 or LTC6930-8.19) and are subject to minimum order quantities.

How should the exposed thermal pad (Pin 9) of the LTC6930IDCB-5.00#TRMPBF be handled in PCB layout?

The exposed pad (Pin 9) of the LTC6930IDCB-5.00#TRMPBF must be soldered directly to a solid copper ground plane on the PCB. Per LTC DWG #05-08-1718 Rev A, this connection is mandatory for thermal dissipation, electrical noise reduction, and functional reliability. The pad area should match the package outline (≈2.0mm × 3.0mm), use 4–9 thermal vias (0.3mm diameter) to inner/ground layers, and avoid solder mask coverage over the pad surface.

Does the LTC6930IDCB-5.00#TRMPBF require external load capacitors like quartz crystals?

No - the LTC6930IDCB-5.00#TRMPBF is a fully integrated silicon oscillator requiring no external timing components. Only 0.1µF ceramic bypass capacitors between each V+ pin (Pins 1, 8) and its adjacent GND pin (Pins 2, 6) are needed. Unlike crystal oscillators, it has no load capacitance requirement because the resonator and sustaining amplifier are monolithically integrated.

What is the maximum capacitive load the OUT pin of the LTC6930IDCB-5.00#TRMPBF can drive reliably?

The OUT pin of the LTC6930IDCB-5.00#TRMPBF is characterized to drive up to 50pF capacitive load or 1kΩ resistive load. Supply current increases linearly with load capacitance (I_SUPPLY ≈ C_LOAD × V_SWING × f_OSC), reaching ~2.2mA at 50pF/5.5V/8MHz. For reliable operation, keep trace length short, avoid stubs, and maintain ≥20mil clearance from noisy signals. Performance data is specified at 5pF (equivalent to two HC logic inputs).