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Analog Devices Inc./Maxim Integrated DS4077L-0DN
- Part No.:
- DS4077L-0DN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- 9-BLGA
- Datasheet:
-
DS4077L-0DN.pdf
- Description:
- XTAL OSC VCXO 77.7600MHZ LVDS
- Quantity:
- Payment:
- Shipping:
Inventory:110
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Product details
Overview
DS4077L-0DN from Maxim Integrated is a 77.76MHz voltage-controlled crystal oscillator (VCXO) module with LVDS differential output, operating from 3.135V to 3.465V, delivering <0.8ps RMS jitter (12kHz–20MHz), ±69ppm absolute pull range, and -125dBc/Hz phase noise at 1kHz offset - designed for reference clock generation in telecom base stations and datacom timing recovery circuits.
For engineers reviewing the DS4077L-0DN datasheet, DS4077L-0DN pinout, DS4077L-0DN application, or DS4077L-0DN equivalent, key selection criteria include LVDS output compliance, tuning voltage bandwidth (10kHz), VC input leakage (<±500nA), aging stability (±5ppm first year), and thermal resistance (44.51°C/W junction-to-case).
Technical Context
The DS4077L-0DN integrates a fundamental-mode quartz crystal with a proprietary oscillator IC, using a varactor-based frequency control architecture. Its LVDS output stage delivers 250–400mV differential swing into 100Ω load, with tightly controlled common-mode voltage (1.125–1.275V) and matched rise/fall times (≤150ps).
Frequency tuning is achieved via analog VC pin (0.3–2.8V), providing 41–164ppm/V sensitivity and ±69ppm total absolute pull range. The device operates across -40°C to +85°C with guaranteed frequency stability over supply (±11.5ppm) and temperature (±20ppm) variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 77.76MHz nominal - precisely aligned to SONET/SDH OC-3 and OTU1 reference clocks. |
| Jitter (RMS) | <0.8ps (12kHz–20MHz) - meets stringent SerDes retiming requirements in 10G datacom systems. |
| Phase Noise | -125dBc/Hz at 1kHz offset - enables low-error-rate clock-data recovery in high-speed receivers. |
| Supply Voltage | 3.135V–3.465V - compatible with standard 3.3V LDO rails and immune to typical board-level ripple. |
| Absolute Pull Range | ±69ppm - supports sufficient frequency margin for PLL lock acquisition and drift compensation. |
| VC Input Bandwidth | 10kHz - allows dynamic loop filtering in analog PLL applications without instability risk. |
| Aging (Year 1) | ±5ppm - ensures long-term frequency accuracy without recalibration in deployed infrastructure. |
Pinout & Package
DS4077L-0DN uses a 9-pin plastic LGA package (14mm × 9mm × 3.06mm), transfer-molded, with exposed pad not electrically connected. Pin 1 is VC (tuning voltage input); pins 2,5,7,8,9 are no-connect; pin 3 is VSS (ground); pin 4 is LVDSO+; pin 6 is VDD (power); pin 5 is LVDSO−.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VC | Analog tuning voltage input (0.3–2.8V); controls oscillator frequency via integrated varactor. |
| 2,5,7,8,9 | N.C. | No internal connection; must remain unconnected on PCB to avoid parasitic coupling or EMI. |
| 3 | VSS | Dedicated ground terminal - requires low-inductance connection to system ground plane. |
| 4 | LVDSO+ | Positive LVDS differential output - routed as controlled-impedance pair (100Ω diff) with pin 5. |
| 6 | VDD | 3.3V power supply input - requires local 100nF + 10µF decoupling adjacent to pin. |
| 5 | LVDSO− | Negative LVDS differential output - complementary to pin 4; forms balanced transmission line. |
Key Features
| Feature | Design Value |
|---|---|
| LVDS Output Compliance | Meets ANSI TIA/EIA-644-A: 250–400mV differential swing, 100Ω load, 150ps max edge rate. |
| Fundamental Crystal Integration | Eliminates external crystal layout sensitivity and reduces board area vs. discrete XO + VCXO IC solutions. |
| Low Phase Noise Architecture | -125dBc/Hz @1kHz enables <1e-12 BER in 10G Ethernet PHY clocking with minimal jitter accumulation. |
| Thermal Stability | ±20ppm over -40°C to +85°C - maintains timing margin in outdoor base station enclosures. |
| Supply Ripple Rejection | Frequency shift ≤±11.5ppm over ±5% VDD variation - tolerates switching regulator noise without external filtering. |
Applications
| SONET/SDH Line Cards | 10G Ethernet PHY Clocking |
|---|---|
Use Scenario: Synchronous optical network line interface cards requiring stable 77.76MHz reference for STS-3/OC-3 framing. IC Role / Device Role / Timing Role: Primary reference oscillator for clock-data recovery (CDR) and frame alignment logic. Use Value: ±69ppm APR enables precise frequency pulling to match network master clock; LVDS output drives multiple CDR chips with minimal skew. |
Use Scenario: 10GBASE-R physical layer transceivers needing ultra-low-jitter clock for 10.3125Gbps serial links. IC Role / Device Role / Timing Role: Low-noise clock source feeding serializer/deserializer (SerDes) PLLs. Use Value: 0.8ps RMS jitter ensures bit error rate remains below 1e-12; -125dBc/Hz phase noise minimizes crosstalk-induced timing uncertainty. |
| Wireless Baseband Units | OTN Transport Equipment |
Use Scenario: LTE/5G macro base stations where BBUs require synchronized 77.76MHz clocks for digital up/down conversion. IC Role / Device Role / Timing Role: System-level timing reference for FPGA-based digital signal processing and RF front-end synchronization. Use Value: ±5ppm first-year aging guarantees long-term frequency alignment across distributed radio units without field recalibration. |
Use Scenario: Optical transport network (OTN) muxponders generating OTU1 (2.66Gbps) client signals. IC Role / Device Role / Timing Role: Jitter-attenuated reference for OTU frame mapping and multiplexing logic. Use Value: 14mm × 9mm LGA footprint fits dense line card layouts; 10kHz VC bandwidth supports adaptive jitter filtering in OTN forward error correction paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-77M760 | CMOS output only; 100ppm APR; 1.2ps RMS jitter (12kHz–20MHz); 5×3.2mm QFN package. | Lacks LVDS output - requires external level-shifting for differential interfaces; higher jitter limits use in 10G SerDes. | Select when cost-sensitive designs accept CMOS drive and relaxed jitter specs. |
| AK2-77M760 | LVDS output; ±50ppm APR; 0.7ps RMS jitter; 7×5mm ceramic LCC package; -40°C to +105°C rating. | Higher temp rating suits industrial base stations; narrower pull range reduces PLL lock range flexibility. | Prefer for extended-temperature deployments where ±50ppm APR suffices for system-level calibration. |
Compared with DS4077L-0DN, Si510-77M760 trades LVDS compatibility and jitter performance for smaller size and lower cost, while AK2-77M760 offers superior thermal robustness but reduced tuning margin - both require layout and signal integrity revalidation.
Availability
DS4077L-0DN is available at Aetrix Electronics and suitable for telecom infrastructure, wireless base station timing, and high-speed datacom applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for DS4077L-0DN 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 high-frequency timing solutions for communications and industrial markets.
The DS4077 family targets telecom/datacom infrastructure with integrated VCXOs optimized for low-jitter, wide-tuning-range reference clocking - specifically addressing phase noise, aging, and thermal stability demands of carrier-grade equipment.
FAQ
What is the operating temperature range for DS4077L-0DN?
The DS4077L-0DN is specified for operation from -40°C to +85°C ambient temperature. This range is fully characterized for all electrical parameters including frequency stability (±20ppm), jitter (<0.8ps RMS), and VC tuning sensitivity (41–164ppm/V). Thermal resistance is 44.51°C/W junction-to-case, enabling reliable thermal design in sealed base station enclosures.
Does DS4077L-0DN support LVDS termination on-chip?
No, DS4077L-0DN does not integrate LVDS termination resistors. It requires external 100Ω differential termination between LVDSO+ (pin 4) and LVDSO− (pin 5) at the load end. The output driver is designed for 100Ω load impedance, delivering 250–400mV differential swing and 1.125–1.275V common-mode voltage under that condition.
What is the maximum allowable VC voltage for DS4077L-0DN?
The absolute maximum VC voltage for DS4077L-0DN is +3.6V, but the functional tuning range is strictly 0.3V to 2.8V. Operating outside this range may cause frequency nonlinearity or damage. Within 0.3V–2.8V, the device achieves its specified ±69ppm absolute pull range and 41–164ppm/V tuning sensitivity.
How does DS4077L-0DN handle power supply noise?
DS4077L-0DN exhibits ±11.5ppm frequency shift over ±5% VDD variation (3.135V–3.465V), demonstrating strong supply ripple rejection. Its internal regulation and crystal oscillator topology minimize sensitivity to switching noise - making it suitable for direct use with DC/DC converters without additional linear regulation, provided proper decoupling (100nF + 10µF) is placed at pin 6.
Is DS4077L-0DN pin-compatible with other DS4077 variants?
Yes, all DS4077 variants - including DS4077L-0DN, DS4077L-0CN, and DS4077L-GDN - share identical 9-pin LGA package (L949A-1), pinout, and mechanical footprint. Only output type (LVDS vs. LVCMOS) and nominal frequency differ; no PCB redesign is needed when substituting within the same output family and thermal grade.
DS4077L-0DN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- DS4077
- Package/Case:
- 9-BLGA
- Packaging:
- Bulk
- Product Status:
- Active
- Base Resonator:
- Crystal
- Type:
- VCXO
- Frequency:
- 77.76 MHz
- Function:
- -
- Output:
- LVDS
- Voltage - Supply:
- -
- Frequency Stability:
- -
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- -
- 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-0DN FAQ
1.How can I place an order for DS4077L-0DN through Aetrix?
Please submit a Request for Quotation (RFQ) for DS4077L-0DN 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-0DN reliable?
The price and inventory of DS4077L-0DN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS4077L-0DN is usually 5 days.
3.What payment methods are accepted for DS4077L-0DN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS4077L-0DN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS4077L-0DN?
DS4077L-0DN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS4077L-0DN 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-0DN?
For technical support, including DS4077L-0DN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS4077L-0DN requirements.
6.How does Aetrix verify that DS4077L-0DN is sourced from the original manufacturer or authorized distributors?
All DS4077L-0DN 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-0DN meets industry standards.
7.What is the process for return or replacement of DS4077L-0DN?
All DS4077L-0DN units undergo pre-shipment inspection (PSI). If there is an issue with DS4077L-0DN, 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-0DN part is unused and in its original packaging.
Return procedure for DS4077L-0DN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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