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Analog Devices Inc. LTC6930CDCB-4.19#TRMPBF
- Part No.:
- LTC6930CDCB-4.19#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6930CDCB-4.19#TRMPBF.pdf
- Description:
- IC OSC SILICON 4.194304MHZ 8-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,851
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Product details
Overview
LTC6930CDCB-4.19#TRMPBF from Analog Devices (formerly Linear Technology) is a digitally controlled silicon oscillator delivering a factory-programmed master frequency of 4.194304 MHz, selectable via three DIV pins to eight precise output frequencies from 32.768 kHz to 4.194304 MHz. It features <0.09% initial frequency accuracy at 25°C, 105 µA typical supply current at 32 kHz/3 V, and ultralow 110 µs start-up time. It serves as a precision clock source in battery-powered microcontroller systems requiring stable timing with minimal external components.
For engineers reviewing the LTC6930CDCB-4.19#TRMPBF datasheet, LTC6930CDCB-4.19#TRMPBF pinout, LTC6930CDCB-4.19#TRMPBF application, or LTC6930CDCB-4.19#TRMPBF equivalent, key selection criteria include its ±0.1% frequency accuracy over temperature (C-grade), 1.7–5.5 V single-supply operation, DFN-8 (2 mm × 3 mm) package with exposed thermal pad, and deterministic jitter performance critical for low-power embedded timing.
Technical Context
The LTC6930CDCB-4.19#TRMPBF integrates a proprietary switched-capacitor-controlled master oscillator operating near 4.194304 MHz, coupled with a binary divider (÷1 to ÷128) selected by CMOS-level DIVA/DIVB/DIVC inputs. Its internal regulation ensures <0.07%/V supply-induced frequency drift and <0.001%/°C temperature drift in the DCB package.
It employs dual V+ and GND pins flanking the OUT pin to isolate output switching noise from the control loop, enabling clean 50% duty cycle output (35–65%) into 5 pF loads while maintaining RMS period jitter <0.15% at 3 V. The device holds OUT low during power-up and guarantees glitch-free transitions when DIV pins are reconfigured.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 32.768 kHz to 4.194304 MHz (8 factory-selectable divisions of 4.194304 MHz master) |
| Initial Accuracy | ±0.09% max at 25°C - enables direct replacement of quartz crystals without calibration |
| Supply Voltage | 1.7 V to 5.5 V - supports single-cell Li-ion or dual AA alkaline operation |
| Supply Current | 105 µA typ at 32 kHz/3 V; 490 µA typ at 4.194304 MHz/3 V - defines battery life in sleep/wake cycles |
| Start-Up Time | <110 µs - meets fast wake-from-sleep timing requirements in portable devices |
| RMS Period Jitter | <0.15% at 3 V - ensures reliable sampling in ADCs and digital interfaces |
| Operating Temp | 0°C to 70°C (C-grade) - qualified for commercial industrial environments |
Pinout & Package
Package: 8-lead (2 mm × 3 mm) plastic DFN (DCB) with exposed thermal pad (Pin 9) requiring solder connection to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pins 1, 8) | Positive supply input | Dual supply pins reduce supply impedance; each must be bypassed locally with 0.1 µF ceramic capacitor to adjacent GND |
| GND (Pins 2, 6) | Ground reference | Dual ground pins provide low-inductance return path; must be connected together and to exposed pad |
| DIVA, DIVB, DIVC (Pins 3, 4, 5) | Binary divider select inputs | CMOS logic inputs (VIH = 1.4 V min, VIL = 0.7 V max); set division ratio ÷1 to ÷128 per Table 1 |
| OUT (Pin 7) | CMOS clock output | 40 Ω series resistance; drives ≤50 pF capacitive or 1 kΩ resistive load; held low during start-up |
| Exposed Pad (Pin 9) | Thermal & electrical ground | Must be soldered to PCB GND plane - essential for thermal dissipation and jitter performance |
Key Features
| Feature | Design Value |
|---|---|
| No external timing components required | Eliminates quartz crystal, load capacitors, and associated layout sensitivity - reduces BOM and board area |
| Digital frequency selection via 3 pins | Enables runtime reconfiguration of clock frequency without firmware update or hardware change |
| Ultralow power consumption | 105 µA at 32 kHz allows multi-year battery life in IoT sensor nodes with periodic wake-up |
| Glitch-free DIV pin switching | Output transitions cleanly within one clock cycle - prevents metastability in synchronous logic |
| Factory-trimmed master oscillator | Ensures <0.09% initial accuracy without user calibration - accelerates time-to-market |
Applications
| Microprocessor Clock Source | Portable Medical Sensor |
|---|---|
Use Scenario: Providing main system clock to an ARM Cortex-M0+ MCU in a handheld diagnostic device. IC Role / Device Role / Timing Role: Primary clock generator driving CPU core, peripherals, and ADC sampling engine. Use Value: 110 µs start-up and 105 µA sleep current enable rapid measurement bursts with minimal energy overhead. | Use Scenario: Timing reference for ECG signal acquisition in a wearable patch monitor. IC Role / Device Role / Timing Role: Stable 32.768 kHz clock for real-time clock (RTC) and low-power timer interrupts. Use Value: ±0.1% frequency accuracy over 0–70°C ensures accurate time-stamping across ambient conditions without crystal aging drift. |
| Industrial PLC I/O Module | Smart Energy Meter |
Use Scenario: Synchronizing analog input sampling and digital output updates in a DIN-rail mounted controller. IC Role / Device Role / Timing Role: Precision clock source for sigma-delta ADC oversampling and PWM generation. Use Value: <0.15% RMS jitter minimizes quantization noise floor degradation in high-resolution measurements. | Use Scenario: Clocking metrology ASIC and secure bootloader in a utility-grade electricity meter. IC Role / Device Role / Timing Role: Primary timing reference for energy accumulation algorithms and cryptographic operations. Use Value: 1.7–5.5 V operation supports wide-input buck-boost power supplies; long-term drift <30 ppm/√kHr ensures decade-level accuracy compliance. |
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 | 32.768 kHz only; ±20 ppm initial accuracy (±0.002%); MEMS resonator; no DIV pins | Fixed-frequency RTC use only; no programmable division | Select when only 32.768 kHz is needed and ultra-low power (<1 µA) dominates over accuracy |
| LTC6903CMS8-4.19#PBF | Same manufacturer, pin-compatible MSOP-8; identical frequency options but higher 250 µA typical supply current at 32 kHz | Same functional role but larger footprint and higher quiescent current | Select when MSOP-8 layout compatibility is required and DFN thermal constraints are not limiting |
Compared with SiT1533AI-H4-33E-32.768E, the LTC6930CDCB-4.19#TRMPBF offers 8× frequency flexibility and superior initial accuracy; compared with LTC6903CMS8-4.19#PBF, it delivers 58% lower supply current in low-frequency modes while using a smaller, thermally enhanced DFN package.
Availability
LTC6930CDCB-4.19#TRMPBF is available at Aetrix Electronics and suitable for microcontroller clocking, portable medical sensing, industrial I/O synchronization, and smart metering applications requiring stable component supply across extended production lifecycles.
Supply support for LTC6930CDCB-4.19#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 acquired Linear Technology in 2017 and maintains its precision analog and timing product lines with full technical documentation and long-term manufacturing commitment.
The LTC6930CDCB-4.19#TRMPBF belongs to the LTC6930 family of micropower silicon oscillators designed specifically for replacing quartz crystals in space-constrained, battery-operated embedded systems where fast start-up, low supply current, and guaranteed accuracy over temperature are critical.
FAQ
What is the nominal output frequency of the LTC6930CDCB-4.19#TRMPBF?
The LTC6930CDCB-4.19#TRMPBF has a factory-programmed master oscillator frequency of 4.194304 MHz. Its output frequency is determined by the state of the DIVA, DIVB, and DIVC pins, selecting one of eight divisions: ÷1 (4.194304 MHz), ÷2 (2.097152 MHz), down to ÷128 (32.768 kHz). The "-4.19" suffix explicitly denotes this master frequency.
Does the LTC6930CDCB-4.19#TRMPBF require external load capacitors like a quartz crystal?
No, the LTC6930CDCB-4.19#TRMPBF is a fully integrated silicon oscillator and requires no external load capacitors or resonators. Only two 0.1 µF ceramic bypass capacitors - one between each V+ pin and its adjacent GND pin - are needed for stable operation. This eliminates crystal matching tolerances and PCB layout sensitivity inherent in discrete crystal solutions.
What is the maximum capacitive load the LTC6930CDCB-4.19#TRMPBF can drive reliably?
The LTC6930CDCB-4.19#TRMPBF is specified to drive up to 50 pF capacitive load or 1 kΩ resistive load. Its typical output resistance is 40 Ω at 3 V, and output rise/fall times are 3 ns (10%–90%). Driving >5 pF increases supply current linearly (ISUPPLY ≈ CLOAD × VSWING × fOSC), so for 50 pF at 4.194 MHz, expect ~2.2 mA additional average current beyond the base 490 µA.
How does the exposed thermal pad (Pin 9) on the LTC6930CDCB-4.19#TRMPBF affect performance?
The exposed pad on the LTC6930CDCB-4.19#TRMPBF must be soldered to a PCB GND plane. It serves both thermal and electrical functions: it lowers junction-to-board thermal resistance (θJA = 64°C/W), preventing thermal drift-induced frequency error, and provides a low-inductance ground return that suppresses supply noise coupling into the oscillator core - directly improving RMS period jitter and start-up stability.
Can the LTC6930CDCB-4.19#TRMPBF operate from a 1.8 V supply?
Yes, the LTC6930CDCB-4.19#TRMPBF operates across 1.7 V to 5.5 V. At 1.8 V, typical supply current is 80 µA (÷1 mode, 32 kHz) and 290 µA (÷1 mode, 4.194 MHz), with frequency accuracy degrading to ±0.8% over the full 0°C–70°C range. Its internal regulation maintains <0.07%/V supply drift, making it robust for brown-out conditions common in battery-powered systems.
LTC6930CDCB-4.19#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Oscillator, Silicon
- Count:
- -
- Frequency:
- 4.194304MHz
- Voltage - Supply:
- 1.7V ~ 5.5V
- Current - Supply:
- 490 µA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6930CDCB-4.19#TRMPBF FAQ
1.How can I place an order for LTC6930CDCB-4.19#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6930CDCB-4.19#TRMPBF 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 LTC6930CDCB-4.19#TRMPBF reliable?
The price and inventory of LTC6930CDCB-4.19#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6930CDCB-4.19#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC6930CDCB-4.19#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6930CDCB-4.19#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6930CDCB-4.19#TRMPBF?
LTC6930CDCB-4.19#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6930CDCB-4.19#TRMPBF 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 LTC6930CDCB-4.19#TRMPBF?
For technical support, including LTC6930CDCB-4.19#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6930CDCB-4.19#TRMPBF requirements.
6.How does Aetrix verify that LTC6930CDCB-4.19#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC6930CDCB-4.19#TRMPBF 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 LTC6930CDCB-4.19#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC6930CDCB-4.19#TRMPBF?
All LTC6930CDCB-4.19#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6930CDCB-4.19#TRMPBF, 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 LTC6930CDCB-4.19#TRMPBF part is unused and in its original packaging.
Return procedure for LTC6930CDCB-4.19#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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