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Analog Devices Inc. LTC6930IDCB-7.37#TRPBF
- Part No.:
- LTC6930IDCB-7.37#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6930IDCB-7.37#TRPBF.pdf
- Description:
- IC OSC SILICON 7.3728MHZ 8-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,088
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Product details
Overview
LTC6930IDCB-7.37#TRPBF from Analog Devices (formerly Linear Technology) is a digitally controlled silicon oscillator with factory-set 7.3728MHz master frequency, selectable via DIV pins across 8 output frequencies (57.6kHz–7.3728MHz), ±0.1% frequency accuracy over –40°C to 85°C, 105µA typical supply current at 32kHz/3V, and <110µs start-up time. It serves as a precision timing source in battery-powered microcontroller clocking and portable instrumentation.
For engineers reviewing the LTC6930IDCB-7.37#TRPBF datasheet, LTC6930IDCB-7.37#TRPBF pinout, LTC6930IDCB-7.37#TRPBF application, or LTC6930IDCB-7.37#TRPBF equivalent, key selection criteria include guaranteed ±0.1% frequency accuracy over temperature, ultralow 105µA supply current at low frequencies, 8-pin DFN package with exposed thermal pad, and deterministic single-cycle DIV pin switching without runt pulses.
Technical Context
The LTC6930IDCB-7.37#TRPBF integrates a proprietary switched-capacitor-controlled master oscillator operating at 7.3728MHz, paired with a binary divider (÷1 to ÷128) controlled by three CMOS digital inputs (DIVA/DIVB/DIVC). Its internal voltage regulation minimizes supply-induced frequency drift (0.07%/V).
It delivers RMS period jitter of 180ps at 7.3728MHz (V+ = 3V), 3ns output rise/fall time, and 40Ω output drive impedance - enabling direct connection to HC logic or microcontroller clock inputs without external buffering while maintaining <0.15% duty cycle deviation across supply and divide settings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 57.6kHz to 7.3728MHz (8 discrete values set by DIVA/DIVB/DIVC) |
| Frequency Accuracy | ±0.1% max over –40°C to 85°C (LTC6930I grade) |
| Supply Current | 183µA typical at 7.3728MHz/3V; 139µA at 32kHz/1.7V |
| Start-Up Time | <110µs to first valid output cycle after V+ exceeds 1.7V |
| RMS Period Jitter | 180ps at 7.3728MHz, V+ = 3V (enables stable MCU clocking at ≤20MHz system clocks) |
| Operating Voltage | 1.7V to 5.5V single supply (supports Li-ion or dual AA operation) |
| Duty Cycle | 48%–52% over full supply and divide range (minimizes timing skew in synchronous logic) |
Pinout & Package
Package: 8-lead (2mm × 3mm) plastic DFN (DCB) with exposed thermal pad (Pin 9) requiring solder connection to GND for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pins 1, 8) | Positive supply input | Each must be bypassed to adjacent GND with 0.1µF ceramic capacitor; both pins tied externally |
| GND (Pins 2, 6) | Ground reference | Low-inductance connection to PCB ground plane; internally connected to exposed pad (Pin 9) |
| DIVA, DIVB, DIVC (Pins 3, 4, 5) | Binary divider control inputs | CMOS logic inputs (VIH ≥ 1.25V, VIL ≤ 1.25V); select ÷1 to ÷128 per Table 1 |
| OUT (Pin 7) | CMOS clock output | 40Ω driver capable of driving 5pF load (2 HC inputs) or 1kΩ resistive load; held low during start-up |
Key Features
| Feature | Design Value |
|---|---|
| Digitally programmable frequency | 8 factory-defined output frequencies from single 7.3728MHz master oscillator via 3-pin binary control |
| Ultralow power operation | 105µA typical at 32kHz/3V enables >10-year battery life in coin-cell IoT sensors |
| Fast, glitch-free start-up | <110µs start-up with output held low prevents invalid clock edges during power ramp |
| No external components required | Operates with only 0.1µF V+/GND bypass capacitors - eliminates crystal load caps and matching networks |
| Robust digital interface | DIV pin transitions produce clean output within one clock cycle - no runt pulses or metastability |
Applications
| Microcontroller Clock Source | Portable Medical Instrumentation |
|---|---|
Use Scenario: Providing main system clock to ARM Cortex-M0+ MCU in handheld glucose meter with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Primary timing reference generating 1MHz system clock via ÷7.3728M/7.3728. Use Value: 105µA supply current at low-frequency mode extends CR2032 battery life beyond 3 years; ±0.1% accuracy ensures reliable ADC sampling timing. | Use Scenario: Synchronizing data acquisition in battery-powered ECG patch with BLE transmission bursts. IC Role / Device Role / Timing Role: Low-jitter 57.6kHz clock for SAR ADC oversampling and digital filter clocking. Use Value: 180ps RMS jitter preserves ENOB in 16-bit ADC; 1.7V minimum supply allows operation down to end-of-life battery voltage. |
| Industrial Sensor Node Timing | Smart Energy Meter Real-Time Clock |
Use Scenario: Precision timing for LoRaWAN node transmitting temperature/humidity every 15 minutes. IC Role / Device Role / Timing Role: 32.768kHz output (÷128) driving RTC and wake-up timer. Use Value: 139µA at 32kHz/1.7V enables >5-year operation on two AA cells; ±0.1% tempco ensures calendar accuracy within ±2.6 minutes/year. | Use Scenario: Backup timing source in electricity meter during main power failure. IC Role / Device Role / Timing Role: 32.768kHz oscillator feeding dedicated RTC IC when VMAIN drops below 10V. Use Value: Guaranteed –40°C to 85°C operation maintains timekeeping across outdoor meter enclosures; no crystal aging drift vs quartz alternatives. |
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 fixed-output MEMS oscillator; no DIV pin control; ±20ppm (±0.002%) initial accuracy | Only supports single frequency; lacks programmability and wide voltage range (1.62–3.63V) | Select when absolute lowest power (55nA standby) and highest stability at 32.768kHz are required, not multi-frequency flexibility |
| MAX7375EKA+T | 32.768kHz–2MHz programmable oscillator; ±50ppm (±0.005%) accuracy; 1.7–5.5V supply; 8-pin µMAX | Lower accuracy than LTC6930I grade; no 7.3728MHz base frequency; higher 1.2mA typical current at 2MHz | Choose for cost-sensitive designs needing basic programmability where ±0.005% accuracy suffices and DFN footprint is not mandatory |
Compared with SiT1533AI-H4-33E-32.768E and MAX7375EKA+T, the LTC6930IDCB-7.37#TRPBF uniquely combines ±0.1% accuracy across –40°C to 85°C, 7.3728MHz master frequency enabling 57.6kHz–7.3728MHz outputs, and sub-200µA current at high frequencies - making it optimal for programmable timing in industrial and medical battery-powered systems.
Availability
LTC6930IDCB-7.37#TRPBF is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial sensor nodes, smart energy metering, and battery-powered microcontroller clocking requiring stable component supply across extended temperature ranges.
Supply support for LTC6930IDCB-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 maintains its precision analog and timing product lines with full technical support and long-term manufacturing commitment.
The LTC6930 series was designed as a drop-in replacement for quartz crystals and oscillators in space-constrained, battery-operated systems - delivering programmable silicon timing with superior shock/vibration immunity and faster start-up than crystal-based solutions.
FAQ
What is the nominal master oscillator frequency of the LTC6930IDCB-7.37#TRPBF?
The LTC6930IDCB-7.37#TRPBF has a factory-programmed master oscillator frequency of exactly 7.372800MHz. This value is fixed and defines all eight selectable output frequencies (e.g., ÷1 = 7.3728MHz, ÷2 = 3.6864MHz, ..., ÷128 = 57.6kHz) via the DIVA/DIVB/DIVC pins. The "7.37" suffix in the part number directly references this master frequency.
Does the LTC6930IDCB-7.37#TRPBF require external load capacitors like quartz crystals?
No, the LTC6930IDCB-7.37#TRPBF is a fully integrated silicon oscillator and requires no external load capacitors. Only 0.1µF ceramic bypass capacitors between each V+ pin and its adjacent GND pin are needed. Unlike quartz crystals, it contains internal frequency synthesis and regulation circuitry, eliminating matching networks and load capacitance tuning.
What is the maximum capacitive load the OUT pin of the LTC6930IDCB-7.37#TRPBF can drive?
The OUT pin of the LTC6930IDCB-7.37#TRPBF is specified to drive up to 50pF capacitive load or 1kΩ resistive load. At 7.3728MHz and 3V supply, driving 50pF increases supply current by approximately 2.0mA (calculated as CLOAD × VSWING × fOSC). For reliable operation, keep trace capacitance low and use local 0.1µF decoupling on V+/GND pins 6 and 8.
Can the DIV pins of the LTC6930IDCB-7.37#TRPBF be changed dynamically during operation?
Yes, the DIVA/DIVB/DIVC pins of the LTC6930IDCB-7.37#TRPBF can be reconfigured dynamically during operation. The device responds within one output clock cycle with no glitches, runt pulses, or metastability. This enables real-time clock rate adaptation in power-managed systems - for example, switching from 7.3728MHz during active processing to 32.768kHz for RTC sleep mode.
What is the thermal pad (Pin 9) requirement for the LTC6930IDCB-7.37#TRPBF DCB package?
The exposed thermal pad (Pin 9) on the LTC6930IDCB-7.37#TRPBF's 2mm × 3mm DFN package must be soldered to a PCB copper plane connected to GND. This is mandatory for both thermal dissipation (θJA = 64°C/W) and electrical stability. Failure to connect the pad degrades jitter performance and risks exceeding junction temperature limits under sustained 7.3728MHz operation.
LTC6930IDCB-7.37#TRPBF 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:
- 7.3728MHz
- Voltage - Supply:
- 1.7V ~ 5.5V
- Current - Supply:
- 853 µA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6930IDCB-7.37#TRPBF FAQ
1.How can I place an order for LTC6930IDCB-7.37#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6930IDCB-7.37#TRPBF 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 LTC6930IDCB-7.37#TRPBF reliable?
The price and inventory of LTC6930IDCB-7.37#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6930IDCB-7.37#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6930IDCB-7.37#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6930IDCB-7.37#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6930IDCB-7.37#TRPBF?
LTC6930IDCB-7.37#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6930IDCB-7.37#TRPBF 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 LTC6930IDCB-7.37#TRPBF?
For technical support, including LTC6930IDCB-7.37#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6930IDCB-7.37#TRPBF requirements.
6.How does Aetrix verify that LTC6930IDCB-7.37#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6930IDCB-7.37#TRPBF 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 LTC6930IDCB-7.37#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6930IDCB-7.37#TRPBF?
All LTC6930IDCB-7.37#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6930IDCB-7.37#TRPBF, 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 LTC6930IDCB-7.37#TRPBF part is unused and in its original packaging.
Return procedure for LTC6930IDCB-7.37#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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