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Analog Devices Inc. LTC6930CMS8-7.37#PBF
- Part No.:
- LTC6930CMS8-7.37#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6930CMS8-7.37#PBF.pdf
- Description:
- IC OSC SILICON 7.3728MHZ 8-MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,750
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Product details
Overview
LTC6930CMS8-7.37#PBF from Analog Devices (formerly Linear Technology) is a digitally controlled, precision silicon oscillator with factory-set 7.3728MHz master frequency, selectable via DIVA/DIVB/DIVC pins across eight output frequencies (57.6kHz–7.3728MHz), ±0.1% max frequency accuracy over –40°C to 85°C, 105µA typical supply current at 32kHz/3V, and <110µs start-up time. It serves as a low-power clock source in portable microprocessor systems requiring stable timing without external crystals.
For engineers reviewing the LTC6930CMS8-7.37#PBF datasheet, LTC6930CMS8-7.37#PBF pinout, LTC6930CMS8-7.37#PBF application, or LTC6930CMS8-7.37#PBF equivalent, key selection criteria include its MS8 package compatibility, 1.7V–5.5V single-supply operation, RMS period jitter <0.15% at 3V, no external components required, and guaranteed performance across industrial temperature range.
Technical Context
The LTC6930CMS8-7.37#PBF implements a proprietary switched-capacitor feedback loop to stabilize its internal 7.3728MHz master oscillator against temperature and supply variation. Its three digital DIV inputs control an on-chip binary divider (1–128), enabling precise frequency selection without trimming or external components.
It features dual V+ pins (1 and 8) and dual GND pins (2 and 6) to isolate power delivery from the CMOS output driver, minimizing deterministic jitter under capacitive loads up to 50pF. The output stage delivers <3ns rise/fall time with 40Ω series resistance at 3V, optimized for clean signal integrity in noise-sensitive embedded applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 57.6kHz to 7.3728MHz (8 factory-selectable divisions of 7.3728MHz master) |
| Frequency Accuracy | ±0.1% max over –40°C to 85°C, V+ = 1.7V–5.5V (LTC6930I grade) |
| Supply Current | 183µA typical at 7.3728MHz/3V; 139µA typical at 32.768kHz/3V |
| Start-Up Time | <110µs from valid V+ to first accurate output cycle |
| RMS Period Jitter | <0.15% at V+ = 3V (≈180ps RMS at 7.3728MHz) |
| Operating Voltage | 1.7V to 5.5V single supply - supports direct Li-ion or dual AA battery operation |
| Temperature Range | –40°C to +85°C (I-grade, specified and tested) |
Pinout & Package
Package: 8-Lead Plastic MSOP (MS8), 3.0mm × 4.9mm, 0.65mm pitch, exposed thermal pad not present (MSOP variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pins 1, 8) | Positive Supply Input | Dual supply pins reduce PSRR coupling; each requires local 0.1µF bypass to adjacent GND |
| GND (Pins 2, 6) | Ground Reference | Dual ground pins provide low-inductance return path; must be connected together and to system ground plane |
| DIVA, DIVB, DIVC (Pins 3, 4, 5) | Frequency Divider Control Inputs | CMOS logic inputs (VIH ≥1.25V, VIL ≤1.25V); set division ratio 1–128 per Table 1; state changes yield glitch-free output within one cycle |
| OUT (Pin 7) | CMOS Clock Output | Low-impedance (40Ω typ at 3V), rail-to-rail swing; drives ≤50pF or 1kΩ load; held low during start-up |
Key Features
| Feature | Design Value |
|---|---|
| Digitally programmable frequency | 8 discrete output frequencies derived from fixed 7.3728MHz master via 3-pin binary control - eliminates crystal inventory and layout tuning |
| Ultralow power consumption | 105µA typical at 32kHz/3V enables multi-year battery life in always-on sensor nodes and RTC subsystems |
| Fast, glitch-free start-up | <110µs power-on delay with output held low ensures no invalid clock edges reach downstream logic |
| Supply-insensitive frequency stability | 0.07%/V drift enables reliable timing across wide battery discharge curves (1.7V–5.5V) |
| Robust output drive | 40Ω series resistance and controlled 3ns rise/fall times suppress EMI while driving mixed-signal SoCs and ADCs directly |
Applications
| Microprocessor Clock | Portable Medical Device Timing |
|---|---|
Use Scenario: Providing main system clock to ultra-low-power ARM Cortex-M0+ MCU in handheld diagnostic instrument. IC Role / Device Role / Timing Role: Primary clock generator replacing quartz oscillator; supplies 4.096MHz (÷2) to MCU core and peripherals. Use Value: Eliminates crystal matching, PCB area, and board-level ESD sensitivity while maintaining ±0.1% timing accuracy across battery voltage drop from 3.3V to 2.0V. | Use Scenario: Synchronizing data acquisition in battery-powered glucose meter with BLE radio wake-up. IC Role / Device Role / Timing Role: Low-jitter 115.2kHz (÷64) clock for ADC sampling and 32.768kHz (÷128) for real-time clock/calendar. Use Value: Single device replaces two crystals; 183µA at 7.3728MHz enables >5-year coin-cell operation when duty-cycled. |
| Industrial Sensor Node Clock | Power Supply Monitoring Clock |
Use Scenario: Timing reference for LoRaWAN edge node operating in unheated outdoor enclosures (–40°C to +85°C). IC Role / Device Role / Timing Role: Factory-trimmed 230.4kHz (÷32) clock for microcontroller and RF transceiver timing synchronization. Use Value: Guaranteed ±0.1% accuracy over full industrial temperature range avoids calibration drift and communication timeouts. | Use Scenario: Clock source for isolated DC-DC controller monitoring circuit in telecom power shelf. IC Role / Device Role / Timing Role: 7.3728MHz (÷1) clock feeding PWM modulator and fault-detection logic. Use Value: 1.7V–5.5V operation allows direct tie to intermediate 3.3V rail; <110µs start-up ensures immediate response to brown-out recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SiT1533AI-H4-33E-32.768E | 32.768kHz only, MEMS-based, ±20ppm initial accuracy (±0.002%), 1.62–3.63V supply | Fixed-frequency RTC replacement; lacks programmability and wide-range output | Select when only ultra-stable 32.768kHz is needed and MEMS reliability is prioritized over flexibility |
| MAX7375AUB+T | Programmable 1kHz–10MHz, ±50ppm accuracy (±0.005%), 1.71–5.5V, 8-pin µMAX package | Higher jitter (>100ps RMS), no guaranteed industrial temp grade, less mature qualification | Consider for cost-sensitive designs where ±0.005% accuracy suffices and MSOP footprint is acceptable |
Compared with SiT1533AI-H4-33E-32.768E and MAX7375AUB+T, the LTC6930CMS8-7.37#PBF uniquely combines factory-programmed 7.3728MHz base frequency, 8-step digital division, ±0.1% industrial-grade accuracy, and sub-110µs start-up - making it optimal for battery-powered microcontrollers needing multiple synchronized clocks from one compact, crystal-free source.
Availability
LTC6930CMS8-7.37#PBF is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, battery-powered microprocessor systems, and power supply monitoring circuits requiring stable component supply with guaranteed long-term availability.
Supply support for LTC6930CMS8-7.37#PBF 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 maintains its high-performance analog and mixed-signal product lines with rigorous automotive and industrial qualification.
The LTC6930 series belongs to Linear's precision timing portfolio, designed specifically to replace quartz oscillators in space-constrained, battery-operated systems where programmability, low power, and guaranteed temperature performance are critical.
FAQ
What is the nominal master oscillator frequency of the LTC6930CMS8-7.37#PBF?
The LTC6930CMS8-7.37#PBF has a factory-programmed master oscillator frequency of exactly 7.372800MHz. This value is fixed and non-adjustable; all eight output frequencies (57.6kHz to 7.3728MHz) are generated by integer division (1–128) of this master frequency using the DIVA/DIVB/DIVC pins. The part number suffix "-7.37" explicitly denotes this base frequency.
Does the LTC6930CMS8-7.37#PBF require external load capacitors like quartz crystals?
No, the LTC6930CMS8-7.37#PBF is a fully integrated silicon oscillator and requires no external load capacitors or tuning components. Only standard 0.1µF ceramic bypass capacitors between each V+ pin (1 and 8) and its adjacent GND pin (2 and 6) are needed. This eliminates crystal matching tolerances, PCB layout sensitivity, and ESD vulnerability associated with external resonators.
What is the guaranteed operating temperature range for the LTC6930CMS8-7.37#PBF?
The LTC6930CMS8-7.37#PBF is an I-grade device with a guaranteed operating temperature range of –40°C to +85°C. This range is fully tested and specified per the datasheet - unlike C-grade variants which are only guaranteed from 0°C to 70°C. Performance parameters including frequency accuracy (±0.1% max), supply current, and start-up time are validated across this full industrial range.
Can the DIV pins of the LTC6930CMS8-7.37#PBF be changed dynamically during operation?
Yes, the DIVA/DIVB/DIVC pins of the LTC6930CMS8-7.37#PBF can be reconfigured dynamically during operation. The device responds to new DIV settings within one output clock cycle, with no glitches, runt pulses, or frequency transients. This enables real-time clock rate adaptation in power-managed systems - for example, switching from 7.3728MHz for active processing to 57.6kHz for sleep mode without interrupting system timing integrity.
What is the maximum capacitive load the OUT pin of the LTC6930CMS8-7.37#PBF can drive reliably?
The OUT pin of the LTC6930CMS8-7.37#PBF is characterized to drive up to 50pF capacitive load or 1kΩ resistive load. The datasheet specifies supply current vs. load capacitance up to 50pF, and the output driver's 40Ω series resistance at 3V ensures stable waveform integrity. Driving >50pF may increase supply current nonlinearly and degrade rise/fall times; for heavier loads, a buffer amplifier is recommended.
LTC6930CMS8-7.37#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Oscillator, Silicon
- Count:
- -
- Frequency:
- 7.3728MHz
- Voltage - Supply:
- 1.7V ~ 5.5V
- Current - Supply:
- 853 µA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6930CMS8-7.37#PBF FAQ
1.How can I place an order for LTC6930CMS8-7.37#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6930CMS8-7.37#PBF 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 LTC6930CMS8-7.37#PBF reliable?
The price and inventory of LTC6930CMS8-7.37#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6930CMS8-7.37#PBF is usually 5 days.
3.What payment methods are accepted for LTC6930CMS8-7.37#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6930CMS8-7.37#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6930CMS8-7.37#PBF?
LTC6930CMS8-7.37#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6930CMS8-7.37#PBF 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 LTC6930CMS8-7.37#PBF?
For technical support, including LTC6930CMS8-7.37#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6930CMS8-7.37#PBF requirements.
6.How does Aetrix verify that LTC6930CMS8-7.37#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6930CMS8-7.37#PBF 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 LTC6930CMS8-7.37#PBF meets industry standards.
7.What is the process for return or replacement of LTC6930CMS8-7.37#PBF?
All LTC6930CMS8-7.37#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6930CMS8-7.37#PBF, 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 LTC6930CMS8-7.37#PBF part is unused and in its original packaging.
Return procedure for LTC6930CMS8-7.37#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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