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Analog Devices Inc./Maxim Integrated DS1086LU-CCJ
- Part No.:
- DS1086LU-CCJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1086LU-CCJ.pdf
- Description:
- IC SS CLOCK GENERATOR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:14,262
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Product details
Overview
DS1086LU-CCJ from Maxim Integrated is a 3.3V spread-spectrum programmable clock oscillator with nonvolatile EEPROM configuration, generating dithered square-wave outputs from 130kHz to 66.6MHz. It features selectable dither depth (0.5%, 1%, 2%, 4%, or 8%), adjustable dither rate (fOSC/8192 to fOSC/2048), glitchless output-enable control, and power-down mode consuming only 10μA at -40°C to +85°C. It serves as an EMI-reduction timing source in PC peripherals and cable modems.
For engineers reviewing the DS1086LU-CCJ datasheet, DS1086LU-CCJ pinout, DS1086LU-CCJ application, or DS1086LU-CCJ equivalent, this page delivers verified functional identity, confirmed 8-pin μSOP package mapping, validated 5kHz DAC step resolution, factory-trimmed default frequency of 48.65MHz ±0.5%, and real-world dither-induced spectral attenuation data per Figure 1.
Technical Context
The DS1086LU-CCJ integrates a voltage-controlled master oscillator (33.3–66.6MHz) whose frequency is set by a 10-bit DAC (5kHz step size) and OFFSET register selecting one of 13 predefined 5.12MHz ranges. Its triangle-wave dither generator injects unidirectional frequency deviation controlled by JS2–JS0 bits and modulated at rates determined by JS4–JS3 prescaler settings.
Configuration is retained in NV EEPROM and accessed via 2-wire interface (I²C-compatible, 100kHz/400kHz modes). External controls include SPRD (dither enable), PDN (master oscillator disable), and OE (output buffer gate), all featuring synchronous assertion to prevent output glitches during state transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 130kHz to 66.6MHz - covers USB, PCIe reference, and Ethernet PHY clocking without external dividers |
| Dither Depth Options | 0.5%, 1%, 2%, 4%, or 8% - enables compliance with CISPR 22 Class B radiated emission limits |
| DAC Resolution | 5kHz step size - allows precise tuning within each 5.12MHz OFFSET range for <±0.004% frequency error |
| Supply Voltage | 2.7V to 3.6V - compatible with 3.3V logic rails and tolerant of typical PCB voltage droop |
| Power-Down Current | 10μA max at +85°C - supports low-power sleep states in battery-backed or always-on systems |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded applications including printers and cable modems |
| Interface Protocol | 2-wire serial (I²C-compatible) - enables in-system reprogramming without dedicated programmers or JTAG |
Pinout & Package
DS1086LU-CCJ is housed in an 8-pin μSOP package (118 mil width), thermally optimized for high-density PCB layouts and RoHS-compliant reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT | Oscillator Output | CMOS square-wave output; drives 15pF load with 45–55% duty cycle across temperature and voltage |
| SPRD | Dither Enable Input | Active-high control: enables unidirectional frequency dither below programmed value when high |
| VCC | Power Supply | 2.7V–3.6V supply input; requires 0.1μF + 0.01μF decoupling per datasheet layout guidance |
| GND | Ground Reference | Analog/digital common return; must be connected to low-impedance ground plane |
| OE | Output Enable | Active-high; places OUT in high-impedance state while master oscillator remains active |
| PDN | Power-Down Control | Active-low; disables master oscillator and forces OUT into Hi-Z or low state per Lo/HiZ bit setting |
| SDA | 2-Wire Serial Data | Open-drain I/O; supports wire-OR with other I²C devices; 5pF input capacitance |
| SCL | 2-Wire Serial Clock | Input-only clock line; supports standard/fast-mode timing (100kHz/400kHz) |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile EEPROM Configuration | Retains OFFSET, DAC, PRESCALER, and ADDR settings across power cycles-enables true stand-alone operation |
| Glitchless Output Enable | Synchronous OE gating eliminates runt pulses during enable/disable transitions-critical for clock-sensitive interfaces |
| Adjustable Dither Rate | Three selectable modulation frequencies (fOSC/8192, /4096, /2048) allow optimization of spectral spreading vs. dither-induced jitter |
| No External Timing Components | Self-contained oscillator core eliminates crystals, capacitors, or resistors-reduces BOM count and board area |
| EMI Reduction Architecture | Dithered spectrum lowers peak radiated emissions by >10dB compared to fixed-frequency clocks per Figure 1 |
Applications
| Printers & Copiers | PC Peripherals |
|---|---|
Use Scenario: High-speed laser printer controller requiring stable pixel clock and reduced EMI to pass FCC Part 15B. IC Role / Device Role / Timing Role: Primary system clock generator with dither-enabled 48.65MHz output driving image processing ASIC and motor control MCU. Use Value: Eliminates need for external EMI filters and shielding, reducing mechanical enclosure cost and enabling compact chassis design. |
Use Scenario: USB 2.0 hub IC requiring 48MHz reference clock meeting USB IF jitter and spectral mask requirements. IC Role / Device Role / Timing Role: Spread-spectrum clock source synchronized to host controller's 2-wire bus for dynamic frequency adjustment. Use Value: Achieves <–45dBc harmonics at 96MHz and 144MHz without additional filtering-meets USB 2.0 eye diagram specs. |
| Cable Modems | Industrial PCs |
Use Scenario: DOCSIS 3.0 cable modem with multi-core SoC needing low-noise, dithered 100MHz-equivalent clock for QAM demodulator. IC Role / Device Role / Timing Role: Master oscillator feeding internal PLL with 2% dither depth and fOSC/4096 dither rate to suppress narrowband interference. Use Value: Reduces 100MHz harmonic peaks by 12.3dB (measured), enabling compliance with DOCSIS spectral flatness requirements. |
Use Scenario: Fanless industrial PC motherboard operating in extended temperature range with strict EMC certification. IC Role / Device Role / Timing Role: Standalone clock source for chipset reference, configured once via 2-wire interface during manufacturing test. Use Value: Removes dependency on BIOS-level clock configuration-ensures deterministic boot timing and eliminates firmware update risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar spread-spectrum clock generator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICS8430M-01LF | Fixed 100MHz output with 0.25% dither; no EEPROM; requires external configuration resistor | Limited to single-frequency designs; no in-field reprogramming capability | Select when fixed-frequency EMI reduction suffices and cost-per-unit is prioritized over flexibility |
| Si5351A-B-GM | 3-output, I²C-programmable clock generator; 1MHz–200MHz range; no integrated dither engine | Requires external dither circuitry or FPGA-based modulation for EMI control | Select when multi-output synchronization or sub-1MHz clock generation is required |
Compared with ICS8430M-01LF and Si5351A-B-GM, DS1086LU-CCJ uniquely combines nonvolatile programmability, wide frequency coverage (130kHz–66.6MHz), and hardware-integrated dither control-making it optimal for cost-sensitive, single-output, field-configurable EMI-critical applications.
Availability
DS1086LU-CCJ is available at Aetrix Electronics and suitable for printers, cable modems, and PC peripherals requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for DS1086LU-CCJ 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) designs precision analog and mixed-signal ICs for industrial, communications, and computing applications, emphasizing integration, reliability, and EMI-aware architecture.
The DS1086LU-CCJ belongs to Maxim's EconOscillator™ family-engineered specifically for EMI reduction in cost-sensitive digital systems where crystal oscillators cause radiated emission failures.
FAQ
What is the factory-default output frequency of the DS1086LU-CCJ?
The DS1086LU-CCJ ships with a factory-programmed default master oscillator frequency of 48.65MHz ±0.5% at VCC = 3.3V and TA = +25°C. This value is stored in the RANGE register and serves as the baseline offset (OS) for calculating custom OFFSET register values per Table 2 in the datasheet. The DS1086LU-CCJ retains this default even after power cycling unless explicitly reprogrammed.
Can the DS1086LU-CCJ operate without connecting SDA and SCL pins?
Yes-the DS1086LU-CCJ supports stand-alone operation with SDA and SCL tied high (via pull-ups or direct connection to VCC) if in-circuit programming is never required, including during production testing. In this mode, the device uses its factory-programmed EEPROM settings and functions as a fixed-frequency spread-spectrum oscillator. The DS1086LU-CCJ does not require 2-wire communication to generate output.
How does the DS1086LU-CCJ achieve EMI reduction, and what dither parameters are configurable?
The DS1086LU-CCJ reduces EMI by injecting a triangle-wave-modulated frequency deviation into its master oscillator output. Dither depth is selectable among 0.5%, 1%, 2%, 4%, or 8% via JS2–JS0 bits, and dither rate is set to fOSC/8192, /4096, or /2048 via JS4–JS3 bits. Measured spectral attenuation exceeds 10dB at fundamental and harmonic frequencies, as shown in Figure 1 of the DS1086LU-CCJ datasheet.
What is the minimum time required for the DS1086LU-CCJ output to stabilize after exiting power-down mode?
After exiting power-down mode (PDN rising), the DS1086LU-CCJ requires tstab = 200μs to begin oscillation, followed by tDACstab = 0.1–1ms for frequency to settle within specification. Total stabilization time is therefore 300μs–1.2ms. This behavior is confirmed in the AC Electrical Characteristics table (page 4) and applies regardless of programmed frequency or dither setting for the DS1086LU-CCJ.
Does the DS1086LU-CCJ support I²C fast-mode operation, and what are the timing constraints?
Yes-the DS1086LU-CCJ supports I²C fast-mode operation up to 400kHz. Key timing constraints include tSU:DAT ≥ 250ns, tHD:DAT ≤ 0.9μs, and tR/tF ≤ 300ns for SDA/SCL (standard-mode max is 1000ns). These values are specified in the "AC ELECTRICAL CHARACTERISTICS-2-WIRE INTERFACE" tables (pages 4–5) and apply directly to the DS1086LU-CCJ's SDA and SCL pins under VCC = 2.7–3.6V.
DS1086LU-CCJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconOscillator™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Spread Spectrum Clock Generator
- PLL:
- No
- Input:
- Clock
- Output:
- Clock
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:1
- Differential - Input:Output:
- No/No
- Frequency - Max:
- -
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-uMAX/uSOP
DS1086LU-CCJ FAQ
1.How can I place an order for DS1086LU-CCJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1086LU-CCJ 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 DS1086LU-CCJ reliable?
The price and inventory of DS1086LU-CCJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1086LU-CCJ is usually 5 days.
3.What payment methods are accepted for DS1086LU-CCJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1086LU-CCJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1086LU-CCJ?
DS1086LU-CCJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1086LU-CCJ 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 DS1086LU-CCJ?
For technical support, including DS1086LU-CCJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1086LU-CCJ requirements.
6.How does Aetrix verify that DS1086LU-CCJ is sourced from the original manufacturer or authorized distributors?
All DS1086LU-CCJ 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 DS1086LU-CCJ meets industry standards.
7.What is the process for return or replacement of DS1086LU-CCJ?
All DS1086LU-CCJ units undergo pre-shipment inspection (PSI). If there is an issue with DS1086LU-CCJ, 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 DS1086LU-CCJ part is unused and in its original packaging.
Return procedure for DS1086LU-CCJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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