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Analog Devices Inc. LTC6930CDCB-7.37#TRPBF
- Part No.:
- LTC6930CDCB-7.37#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6930CDCB-7.37#TRPBF.pdf
- Description:
- IC OSC SILICON 7.3728MHZ 8-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
LTC6930CDCB-7.37#TRPBF from Analog Devices (formerly Linear Technology) is a digitally controlled silicon oscillator with factory-set master frequency of 7.372800 MHz, selectable via DIVA/DIVB/DIVC pins across 8 output frequencies from 57.6 kHz to 7.3728 MHz. It delivers ±0.1% frequency accuracy over 0°C to 70°C, 105 µA typical supply current at 32 kHz/3 V, and <110 µs start-up time - ideal for low-power microcontroller clocking in portable instrumentation.
For engineers reviewing the LTC6930CDCB-7.37#TRPBF datasheet, LTC6930CDCB-7.37#TRPBF pinout, LTC6930CDCB-7.37#TRPBF application, or LTC6930CDCB-7.37#TRPBF equivalent, key selection criteria include its 0.09% max initial frequency error at 25°C, DFN-8 (2 mm × 3 mm) package with exposed thermal pad, RMS period jitter <0.15% at 3 V, and operation from 1.7 V to 5.5 V single supply.
Technical Context
The LTC6930CDCB-7.37#TRPBF implements a proprietary switched-capacitor feedback loop to stabilize its internal 7.3728 MHz master oscillator against temperature and supply variation. Its three digital control inputs (DIVA/DIVB/DIVC) configure binary dividers (1–128) to generate precise output frequencies without external components.
It features dual V+ pins (Pins 1 & 8) and dual GND pins (Pins 2 & 6) to isolate oscillator core from output driver noise, enabling clean CMOS output with <3 ns rise/fall time and <40 Ω series resistance at 3 V - critical for driving capacitive loads up to 50 pF while minimizing supply-induced jitter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 57.6 kHz to 7.3728 MHz (8 factory-selectable values via DIV pins) |
| Initial Frequency Accuracy | ±0.09% max at 25°C - enables timing-critical MCU boot without calibration |
| Supply Voltage Range | 1.7 V to 5.5 V - supports direct operation from single Li-ion or dual AA cells |
| Supply Current | 183 µA typical at 7.3728 MHz / 3 V - ensures >1-year battery life in sleep-wake cycling systems |
| RMS Period Jitter | 0.97 nsP-P at 7.3728 MHz / 3 V - meets USB audio and low-latency sensor interface requirements |
| Start-Up Time | <110 µs - guarantees deterministic clock availability after power-on reset |
| Operating Temperature | 0°C to 70°C (C-grade) - validated for commercial industrial control panels |
Pinout & Package
Package: 8-lead (2 mm × 3 mm) plastic DFN (DCB) with exposed thermal pad (Pin 9), JEDEC-compliant footprint, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pins 1, 8) | Positive supply input | Dual supply pins reduce PSRR coupling; each requires local 0.1 µF ceramic bypass to adjacent GND |
| GND (Pins 2, 6) | Ground reference | Dual ground pins minimize return path inductance; must be connected to shared low-impedance plane and exposed pad |
| DIVA, DIVB, DIVC (Pins 3, 4, 5) | Frequency divider select inputs | CMOS logic inputs (VIH = 1.25 V min); set binary divider ratio (1–128) per Table 1 - no pull-ups required |
| OUT (Pin 7) | CMOS oscillator output | Low-impedance (40 Ω typ) rail-to-rail driver; holds low during start-up; glitch-free on DIV changes |
| Exposed Pad (Pin 9) | Thermal and electrical ground | Must be soldered to PCB GND plane for thermal dissipation and EMI reduction - not optional |
Key Features
| Feature | Design Value |
|---|---|
| No external timing components | Eliminates crystal, load caps, and matching network - reduces BOM count and layout area by ≥4 parts |
| Digital frequency selection | Hardware-configurable divide ratio avoids firmware overhead or I²C/SPI interface complexity |
| Ultralow power at low frequencies | 105 µA at 32.768 kHz enables real-time clock backup with coin-cell longevity |
| Fast, glitch-free DIV switching | Output updates within one clock cycle - safe for dynamic clock scaling in power-managed systems |
| Factory-trimmed accuracy | 0.09% initial error removes need for system-level calibration in cost-sensitive applications |
Applications
| Portable Medical Sensors | Industrial PLC Timing Modules |
|---|---|
Use Scenario: Battery-powered ECG front-end acquiring 1 kSPS data with ultra-low standby current. IC Role / Device Role / Timing Role: Primary system clock for ADC sampling and microcontroller execution. Use Value: 183 µA at 7.3728 MHz enables >24-month battery life; ±0.1% accuracy ensures consistent sample timing across temperature. |
Use Scenario: DIN-rail mounted programmable logic controller requiring stable 1–8 MHz clock for I/O scanning and communication peripherals. IC Role / Device Role / Timing Role: Central timing source for CPU, UART, and SPI interfaces. Use Value: Dual V+/GND isolation minimizes jitter under noisy 24 V DC field bus conditions; DFN package withstands industrial vibration. |
| Smart Energy Meters | Wearable Fitness Trackers |
Use Scenario: ANSI C12.20-compliant electricity meter with metrology ASIC requiring precise 1 MHz clock for delta-sigma ADC oversampling. IC Role / Device Role / Timing Role: High-stability clock generator for energy measurement engine. Use Value: 0.97 nsP-P jitter at 7.3728 MHz maintains ENOB >18 bits; long-term drift ≤30 ppm/√kHr ensures 10-year calibration validity. |
Use Scenario: Bluetooth LE wristband synchronizing motion sensor sampling and radio transmission bursts. IC Role / Device Role / Timing Role: Low-power clock source for ARM Cortex-M0+ MCU and MEMS accelerometer. Use Value: <110 µs start-up allows immediate wake-from-sleep operation; 2 mm × 3 mm DFN fits constrained wearable PCB space. |
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-32.768D | 32.768 kHz fixed-frequency MEMS oscillator; ±10 ppm stability; no digital divider | Only supports RTC use cases; lacks programmable frequency range and fast start-up | Select when only ultra-low-power 32 kHz timing is needed and frequency flexibility is unnecessary |
| MAX7375EKA+T | 32.768 kHz to 2.5 MHz programmable oscillator; ±50 ppm initial accuracy; I²C interface | Requires serial bus overhead and firmware support; higher jitter (1.5 nsP-P at 2.5 MHz) | Select when I²C-based dynamic reconfiguration is mandatory and ±50 ppm accuracy is acceptable |
Compared with SiT1533AI-H4-33E-32.768D and MAX7375EKA+T, the LTC6930CDCB-7.37#TRPBF provides superior initial accuracy (±0.09% vs ±0.005% and ±0.005%), hardware-only frequency selection, and lower jitter - making it optimal for precision clocking where deterministic timing and minimal software dependency are critical.
Availability
LTC6930CDCB-7.37#TRPBF is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC timing modules, and smart energy meters requiring stable component supply with guaranteed long-term continuity.
Supply support for LTC6930CDCB-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 full product support, manufacturing, and documentation for the LTC6930 family.
The LTC6930 series was designed as a precision, ultralow-power silicon oscillator replacement for quartz crystals in battery-operated and space-constrained applications - emphasizing start-up speed, supply insensitivity, and long-term stability without external components.
FAQ
What is the nominal master oscillator frequency of the LTC6930CDCB-7.37#TRPBF?
The LTC6930CDCB-7.37#TRPBF has a factory-programmed master oscillator frequency of exactly 7.372800 MHz. This value is used with internal binary dividers (1–128) selected by DIVA/DIVB/DIVC pins to generate all eight output frequencies listed in Table 1 - including 7.3728 MHz (÷1), 3.6864 MHz (÷2), and down to 57.6 kHz (÷128). The "7.37" in the part number directly references this master frequency.
Does the LTC6930CDCB-7.37#TRPBF require external load capacitors like quartz crystals?
No, the LTC6930CDCB-7.37#TRPBF is a fully integrated silicon oscillator and requires no external load capacitors or tuning components. Only 0.1 µF ceramic bypass capacitors between each V+ pin and its adjacent GND pin are needed for stable operation. This eliminates the board space, cost, and calibration effort associated with crystal-based timing solutions.
Can the LTC6930CDCB-7.37#TRPBF operate from a single 1.8 V supply?
Yes, the LTC6930CDCB-7.37#TRPBF operates across 1.7 V to 5.5 V, so 1.8 V is fully supported. At 1.8 V and 7.3728 MHz, the typical supply current is 226 µA (per DC Electrical Characteristics table), and frequency accuracy remains within ±0.8% over the full temperature range - making it suitable for low-voltage IoT edge nodes.
How is the exposed thermal pad (Pin 9) of the LTC6930CDCB-7.37#TRPBF connected?
The exposed pad (Pin 9) of the LTC6930CDCB-7.37#TRPBF must be soldered directly to a PCB copper plane connected to system GND. It is not optional - doing so provides essential thermal dissipation (θJA = 64°C/W) and reduces EMI by lowering ground impedance. The pad must be included in the solder stencil and reflow profile per Linear's recommended layout (Figure 1).
What is the maximum capacitive load the LTC6930CDCB-7.37#TRPBF can drive reliably?
The LTC6930CDCB-7.37#TRPBF is characterized to drive up to 50 pF capacitive load or 1 kΩ resistive load. Its output driver has <40 Ω series resistance at 3 V, enabling robust signal integrity even with moderate PCB trace capacitance. Supply current increases linearly with load capacitance (ISUPPLY ≈ CLOAD × VSWING × fOSC), so 50 pF at 7.3728 MHz draws ~2.7 mA additional average current beyond quiescent consumption.
LTC6930CDCB-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:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-DFN (2x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6930CDCB-7.37#TRPBF FAQ
1.How can I place an order for LTC6930CDCB-7.37#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6930CDCB-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 LTC6930CDCB-7.37#TRPBF reliable?
The price and inventory of LTC6930CDCB-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 LTC6930CDCB-7.37#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6930CDCB-7.37#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6930CDCB-7.37#TRPBF transactions.
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4.How is shipping managed for LTC6930CDCB-7.37#TRPBF?
LTC6930CDCB-7.37#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6930CDCB-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 LTC6930CDCB-7.37#TRPBF?
For technical support, including LTC6930CDCB-7.37#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6930CDCB-7.37#TRPBF requirements.
6.How does Aetrix verify that LTC6930CDCB-7.37#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6930CDCB-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 LTC6930CDCB-7.37#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6930CDCB-7.37#TRPBF?
All LTC6930CDCB-7.37#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6930CDCB-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 LTC6930CDCB-7.37#TRPBF part is unused and in its original packaging.
Return procedure for LTC6930CDCB-7.37#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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