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Analog Devices Inc./Maxim Integrated DS4077L-ACN
- Part No.:
- DS4077L-ACN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- 9-BLGA
- Datasheet:
-
DS4077L-ACN.pdf
- Description:
- XTAL OSC VCXO 76.8000MHZ LVCMOS
- Quantity:
- Payment:
- Shipping:
Inventory:2,019
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Product details
Overview
DS4077L-ACN from Maxim Integrated is a voltage-controlled crystal oscillator (VCXO) module delivering 76.8MHz reference clock generation for telecom base stations and datacom systems. It operates from 3.135V to 3.465V, achieves <0.8ps RMS jitter (12kHz–20MHz), offers ±69ppm absolute pull range, and uses a fundamental quartz crystal in a 14mm × 9mm × 3.06mm plastic LGA package.
For engineers reviewing the DS4077L-ACN datasheet, DS4077L-ACN pinout, DS4077L-ACN application, or DS4077L-ACN equivalent, key selection criteria include LVCMOS output compatibility, ±69ppm tuning range at 76.8MHz, low-phase-noise performance (–125dBc/Hz @ 1kHz), and industrial temperature operation (–40°C to +85°C).
Technical Context
The DS4077L-ACN integrates a fundamental-mode quartz crystal with a proprietary oscillator IC to generate stable, tunable clock signals. Its VC control input enables precise frequency adjustment via analog voltage (0.3V–2.8V), with tuning sensitivity of 41–164ppm/V and bandwidth up to 10kHz.
Designed for high-integrity timing paths, it delivers LVCMOS output with 2ns rise/fall times, 40–60% duty cycle, and guaranteed logic levels (VOH ≥ VDD–0.8V, VOL ≤ 0.4V). Phase noise is specified at –125dBc/Hz @ 1kHz offset and –150dBc/Hz @ 100kHz offset under typical conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 76.8MHz nominal - fixed factory-set frequency for synchronous data recovery in telecom infrastructure |
| Supply Voltage | 3.135V to 3.465V - compatible with standard 3.3V rail with ±5% tolerance |
| Jitter (RMS) | <0.8ps (12kHz–20MHz) - meets SONET OC-192 and SyncE jitter compliance requirements |
| Absolute Pull Range | ±69ppm - enables fine frequency alignment in PLL-based clock-data recovery loops |
| Phase Noise | –125dBc/Hz @ 1kHz offset - supports low-error-rate transmission in high-speed serial links |
| Operating Temp | –40°C to +85°C - qualified for deployment in outdoor base station enclosures and network edge hardware |
| Package | 14mm × 9mm × 3.06mm plastic LGA - surface-mount compatible with automated PCB assembly and thermal management |
Pinout & Package
DS4077L-ACN uses a 9-pin plastic LGA (Land Grid Array) package with exposed pad for thermal conduction. Pin 1 is marked by a dot on top-side silkscreen; pins are arranged in a 3×3 grid with corner pins omitted per layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VC | Control voltage input for analog frequency tuning (0.3V–2.8V); high-impedance node requiring low-noise biasing |
| 2, 5, 7, 8, 9 | N.C. | No internal connection - must remain unconnected or grounded per layout guidelines to avoid parasitic coupling |
| 3 | VSS | Digital ground reference - requires low-inductance connection to system ground plane |
| 4 | LVCMOS Output | Single-ended CMOS-compatible clock output (3.3V logic levels); drives 10pF load with 2ns edge rates |
| 6 | VDD | 3.3V power supply input - requires local 100nF + 10µF decoupling adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Fundamental-mode quartz crystal | Enables lower phase noise vs. overtone designs; eliminates need for external load capacitors |
| LVCMOS output buffer | Direct interface to FPGA/ASIC clock inputs without level-shifting or termination resistors |
| ±69ppm absolute pull range | Supports full frequency calibration across manufacturing tolerances and aging drift over 10 years |
| –125dBc/Hz phase noise @ 1kHz | Meets stringent spectral purity requirements for 10G/25G Ethernet and CPRI fronthaul timing |
| 14mm × 9mm LGA footprint | Reduces board area vs. legacy DIP or SOIC oscillators while enabling improved thermal dissipation |
Applications
| Base Station Reference Clock | Datacom Clock-Data Recovery |
|---|---|
Use Scenario: Provides master timing reference for LTE/5G radio units and BBU synchronization. IC Role / Device Role / Timing Role: Primary VCXO source for phase-locked loop (PLL) frequency synthesis and IEEE 1588 timestamp alignment. Use Value: ±69ppm APR allows real-time compensation of temperature-induced drift in outdoor cabinet environments. |
Use Scenario: Retimes high-speed serial data streams in optical line cards and switch fabric interfaces. IC Role / Device Role / Timing Role: Low-jitter (0.8ps RMS) clock source for CDR circuits recovering 10G/25G NRZ signals. Use Value: –125dBc/Hz phase noise at 1kHz minimizes bit error rate degradation in long-haul fiber links. |
| SyncE Network Timing | Wireless Backhaul Synchronization |
Use Scenario: Supplies traceable, stratum-3-compliant clock to Ethernet switches supporting Synchronous Ethernet. IC Role / Device Role / Timing Role: Holdover-capable VCXO referenced to PTP grandmaster clocks in packet networks. Use Value: First-year aging ≤ ±5ppm ensures long-term stability without frequent recalibration during field deployment. |
Use Scenario: Enables precise time-of-arrival measurement between microwave backhaul nodes. IC Role / Device Role / Timing Role: Tunable 76.8MHz reference for TDD frame boundary alignment in point-to-point links. Use Value: 10kHz VC bandwidth supports dynamic frequency correction under variable environmental stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-76M8000 | Programmable XO (not VCXO); no analog tuning voltage input; ±50ppm initial accuracy only | Lacks real-time frequency adjustment capability required for PLL lock acquisition and holdover compensation | Select DS4077L-ACN when analog VC control and ±69ppm APR are mandatory for system-level timing agility |
| AK2-76.8000MHZ-E | Fixed-frequency LVCMOS oscillator; no VC pin; ±20ppm stability over temperature; higher jitter (1.2ps RMS) | Suitable only for static clock distribution, not for closed-loop timing recovery or adaptive synchronization | Choose DS4077L-ACN where jitter-critical retiming or temperature-compensated frequency pulling is required |
Compared with Si510-76M8000 and AK2-76.8000MHZ-E, DS4077L-ACN uniquely provides analog voltage-controlled tuning within ±69ppm range, sub-0.8ps jitter, and –125dBc/Hz phase noise - making it essential for telecom-grade clock-data recovery and base station holdover applications.
Availability
DS4077L-ACN is available at Aetrix Electronics and suitable for telecom infrastructure, datacom line cards, and wireless base station designs requiring stable component supply, long-lifecycle support, and guaranteed parametric performance across industrial temperature ranges.
Supply support for DS4077L-ACN 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, mixed-signal, and timing solutions for communications, industrial, and computing markets.
The DS4077L-ACN belongs to Maxim's high-stability VCXO product line, engineered specifically for low-jitter, temperature-resilient reference clocking in telecom/datacom infrastructure where phase noise and tuning range directly impact system BER and synchronization integrity.
FAQ
What is the operating temperature range for DS4077L-ACN?
The DS4077L-ACN is rated for continuous operation from –40°C to +85°C ambient temperature. This industrial-grade range ensures reliable performance in outdoor base station cabinets, network edge equipment, and datacom chassis where thermal cycling and extended uptime are critical. All electrical specifications, including jitter and phase noise, are guaranteed across this full range.
Does DS4077L-ACN support LVDS output?
No, DS4077L-ACN is configured exclusively for LVCMOS output. The "-ACN" suffix denotes LVCMOS output type and 76.8MHz frequency. For LVDS output at the same frequency, the correct part is DS4077L-ADN. Mixing output types is not possible - DS4077L-ACN contains internal circuitry optimized for single-ended CMOS drive strength and logic thresholds.
What is the absolute pull range of DS4077L-ACN, and how is it used?
The DS4077L-ACN has an absolute pull range (APR) of ±69ppm, meaning its output frequency can be tuned across ±69ppm relative to its nominal 76.8MHz value by applying 0.3V to 2.8V to the VC pin. This range supports system-level calibration for aging, temperature drift, and reference clock alignment in PLL-based timing architectures without requiring firmware updates or hardware changes.
Can DS4077L-ACN be used in place of a crystal plus separate oscillator IC?
Yes - DS4077L-ACN integrates both the fundamental quartz crystal and oscillator IC into one hermetically sealed LGA module. This eliminates external load capacitor selection, reduces PCB layout sensitivity, and guarantees matched crystal-IC performance. Unlike discrete crystal+IC solutions, DS4077L-ACN delivers factory-characterized jitter (<0.8ps RMS) and phase noise (–125dBc/Hz @ 1kHz) without design iteration.
What decoupling is recommended for DS4077L-ACN's VDD pin?
Maxim recommends placing a 100nF ceramic capacitor and a 10µF tantalum or ceramic capacitor in parallel, located within 2mm of the DS4077L-ACN's VDD (pin 6) and VSS (pin 3) terminals. This dual-capacitor approach suppresses high-frequency switching noise and low-frequency supply sag, ensuring stable oscillation and minimizing jitter contribution from power rail modulation.
DS4077L-ACN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- DS4077
- Package/Case:
- 9-BLGA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Base Resonator:
- Crystal
- Type:
- VCXO
- Frequency:
- 76.8 MHz
- Function:
- -
- Output:
- LVCMOS
- Voltage - Supply:
- 3.3V
- Frequency Stability:
- ±20ppm
- Absolute Pull Range (APR):
- ±69ppm
- Operating Temperature:
- -40°C ~ 85°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- 30mA
- Ratings:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-VDFN (3.2x2.5)
- Size / Dimension:
- 0.551" L x 0.354" W (14.00mm x 9.00mm)
- Height - Seated (Max):
- 0.120" (3.06mm)
DS4077L-ACN FAQ
1.How can I place an order for DS4077L-ACN through Aetrix?
Please submit a Request for Quotation (RFQ) for DS4077L-ACN 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 DS4077L-ACN reliable?
The price and inventory of DS4077L-ACN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS4077L-ACN is usually 5 days.
3.What payment methods are accepted for DS4077L-ACN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS4077L-ACN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS4077L-ACN?
DS4077L-ACN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS4077L-ACN 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 DS4077L-ACN?
For technical support, including DS4077L-ACN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS4077L-ACN requirements.
6.How does Aetrix verify that DS4077L-ACN is sourced from the original manufacturer or authorized distributors?
All DS4077L-ACN 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 DS4077L-ACN meets industry standards.
7.What is the process for return or replacement of DS4077L-ACN?
All DS4077L-ACN units undergo pre-shipment inspection (PSI). If there is an issue with DS4077L-ACN, 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 DS4077L-ACN part is unused and in its original packaging.
Return procedure for DS4077L-ACN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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