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Analog Devices Inc./Maxim Integrated DS1086HU-C01+
- Part No.:
- DS1086HU-C01+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
DS1086HU-C01+.pdf
- Description:
- IC INTEGRATED CIRCUIT
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Product details
Overview
DS1086HU-C01+ from Maxim Integrated is a programmable spread-spectrum clock generator producing dithered square-wave outputs from 260kHz to 133MHz. It features nonvolatile EEPROM configuration, 2% or 4% selectable frequency dithering, and dual control inputs (PDN for power-down, OE for glitchless output enable). It operates from a 5V supply and is used in EMI-sensitive digital systems such as printers, cable modems, and PC peripherals.
For engineers reviewing the DS1086HU-C01+ datasheet, DS1086HU-C01+ pinout, DS1086HU-C01+ application, or DS1086HU-C01+ equivalent, key selection considerations include its dither-enabled EMI reduction capability, 10kHz DAC step resolution, 8-pin µSOP package, stand-alone operation without external timing components, and 2-wire serial interface for in-circuit reprogramming.
Technical Context
The DS1086HU-C01+ integrates a voltage-controlled master oscillator (66–133MHz), a 10-bit DAC with 10kHz step size, an OFFSET register selecting one of 13 frequency subranges, and a prescaler dividing by 1–256. Its dither is generated via a triangle-wave modulator injecting ±2% or ±4% deviation below the programmed frequency, with spectral attenuation maximized at prescaler = 1.
Control logic includes synchronous OE gating (glitchless enable) and PDN-driven power-down mode reducing supply current to 35µA. All register settings-including PRESCALER (02h), DAC HIGH/LOW (08h/09h), and OFFSET (0Eh)-are stored in NV EEPROM and persist across power cycles, enabling true stand-alone operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 260kHz to 133MHz - covers USB, PCI, Ethernet, and processor clock domains with single-device flexibility. |
| Dither Options | 2% or 4% peak deviation - reduces radiated EMI peaks by spreading energy across spectrum, validated per FCC/CE limits. |
| Supply Voltage | 4.75V to 5.25V - compatible with standard 5V logic rails; no LDO required. |
| Active Supply Current | 35mA typical at default frequency - enables use in power-constrained embedded systems with active thermal budgeting. |
| Power-Down Current | 35µA - allows deep sleep during system idle without losing configuration. |
| DAC Resolution | 10kHz step size - supports precise frequency tuning (e.g., 11.0592MHz UART clocks) with <0.004% error in typical cases. |
| Interface | 2-wire I²C-compatible (100kHz/400kHz) - enables host MCU-based calibration, field updates, and production programming. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade computing and peripheral applications. |
Pinout & Package
DS1086HU-C01+ is housed in an 8-pin µSOP package (2.0mm × 2.5mm, 0.5mm pitch), RoHS-compliant and lead-free (+ suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Oscillator Output | CMOS-compatible square-wave output; 40–60% duty cycle; drives 15pF load up to 133MHz. |
| 2 SPRD | Dither Enable Input | High = 2% dither, Low = 4% dither; controls spectral shaping without software intervention. |
| 3 VCC | Power Supply | 5V nominal input; requires 0.1µF + 0.01µF decoupling near pin for stable high-frequency operation. |
| 4 GND | Ground Reference | Return path for oscillator core and I/O; must be low-impedance to minimize jitter and EMI coupling. |
| 5 OE | Output Enable | High = output enabled; Low = output tri-stated while master oscillator remains active - enables dynamic clock gating. |
| 6 PDN | Power-Down Control | Low = master oscillator disabled, 35µA quiescent current; High = full operation - hardware-controlled sleep entry. |
| 7 SDA | 2-Wire Serial Data | Open-drain bidirectional line; requires external pull-up; supports I²C read/write to EEPROM registers. |
| 8 SCL | 2-Wire Serial Clock | Input-only clock line; synchronizes register access; supports standard/fast-mode timing (100/400kHz). |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum EMI reduction | Validated 10–15dB peak amplitude reduction in 9kHz RBW measurements vs. fixed-frequency oscillators. |
| Nonvolatile configuration storage | All register settings retained after power cycle - eliminates boot-time initialization firmware overhead. |
| Glitchless output enable | Synchronous OE control ensures zero-cycle output transitions - prevents metastability in clock-domain crossings. |
| No external timing components | Self-contained oscillator core - removes crystal, capacitors, and layout sensitivity from BOM and PCB design. |
| Hardware power-down mode | PDN pin disables oscillator core in <100µs - enables rapid system-level power state transitions without software latency. |
| Factory-default 97.1MHz output | Preprogrammed at wafer test - provides immediate functional operation on power-up before any I²C communication. |
Applications
| Printers & Copiers | PC Peripherals |
|---|---|
Use Scenario: High-speed laser print engine requiring low-EMI pixel clock generation for image data transfer and motor control synchronization. IC Role / Device Role / Timing Role: Primary spread-spectrum clock source for ASIC video controller and stepper driver ICs. Use Value: Meets CISPR 22 Class B radiated emissions limits without added shielding or ferrites, reducing mechanical cost and board area. |
Use Scenario: USB 2.0 hub controller needing precise 48MHz clock with minimized harmonic interference on shared PCB layers. IC Role / Device Role / Timing Role: Configurable clock generator replacing multiple fixed-frequency crystals in compact peripheral designs. Use Value: Single 8-pin µSOP replaces 3–4 crystals and associated load caps, cutting BOM count and routing complexity. |
| Cable Modems | Cell Phones (Baseband) |
Use Scenario: DOCSIS-compliant upstream/downstream PHY timing where spectral purity and FCC Part 15 compliance are mandatory. IC Role / Device Role / Timing Role: Master clock for QAM demodulator, MAC processor, and Ethernet PHY subsystems. Use Value: 4% dither option suppresses narrowband emissions at critical 5–30MHz bands, passing conducted emission tests on first spin. |
Use Scenario: Baseband processor clocking in legacy 2G/3G handsets where RF front-end sensitivity demands ultra-low phase noise and spurious content. IC Role / Device Role / Timing Role: Secondary clock source for audio codec, display interface, and memory controller blocks. Use Value: Stand-alone operation eliminates need for host MCU involvement in clock startup, improving boot reliability and reducing firmware dependencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable spread-spectrum clock generator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICS8430M-01LF | Fixed 2.5V supply; 100MHz max output; no NV memory - requires external configuration on every power-up. | Lacks stand-alone operation; suited for systems with always-on microcontroller managing clock setup. | Choose when 2.5V rail is available and host firmware guarantees reliable register initialization. |
| Si5351A-B-GM | 3-output, I²C-programmable; 1MHz–200MHz range; integrated PLL; no spread-spectrum dither function. | Offers multi-channel flexibility but no EMI-reduction feature - requires external filtering for strict EMC environments. | Prefer when multiple synchronized clocks are needed and EMI is managed via layout/shielding rather than spectral shaping. |
Compared with ICS8430M-01LF and Si5351A-B-GM, DS1086HU-C01+ uniquely combines nonvolatile configuration, hardware dither control (SPRD pin), and 5V operation - making it optimal for cost-sensitive, EMI-regulated commercial systems where firmware simplicity and EMC robustness are prioritized over multi-output capability or low-voltage operation.
Availability
DS1086HU-C01+ is available at Aetrix Electronics and suitable for printers, cable modems, and PC peripherals requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DS1086HU-C01+ 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 power management ICs for industrial, communications, and consumer applications.
The DS1086HU-C01+ belongs to Maxim's EconOscillator™ family - designed specifically to replace fixed-frequency crystals and oscillators in EMI-sensitive digital systems through integrated spread-spectrum clock generation and zero-external-component operation.
FAQ
What is the factory-default output frequency of the DS1086HU-C01+?
The DS1086HU-C01+ ships with a factory-default master oscillator frequency of 97.1MHz, resulting in a 97.1MHz output when the prescaler is set to divide-by-1. This value is stored in the RANGE register and corresponds to the OS (Offset Select) default setting. The DS1086HU-C01+ begins operating at this frequency immediately upon power-up, without requiring I²C programming or external configuration.
Does the DS1086HU-C01+ require external crystals or capacitors to operate?
No, the DS1086HU-C01+ does not require external crystals, resonators, or timing capacitors. Its internal voltage-controlled oscillator (VCO) and integrated DAC/offset architecture generate the full 260kHz–133MHz output range autonomously. Only standard 0.1µF and 0.01µF VCC decoupling capacitors are needed - eliminating BOM items, layout constraints, and frequency drift due to external component tolerances.
How does the SPRD pin affect dither behavior in the DS1086HU-C01+?
The SPRD pin on the DS1086HU-C01+ selects dither depth: high = 2% peak deviation, low = 4% peak deviation. This hardware-selectable option allows real-time EMI optimization without I²C register writes. Dither is unidirectional (always below the programmed center frequency) and its spectral effect is strongest at prescaler = 1, degrading by ~2.7dB per factor-of-2 increase in prescaler value due to averaging.
Can the DS1086HU-C01+ retain its configuration after power loss?
Yes, the DS1086HU-C01+ stores all register settings - including PRESCALER, DAC HIGH/LOW, and OFFSET - in nonvolatile EEPROM. These values persist across power cycles, enabling true stand-alone operation. Configuration is retained for >100 years at +25°C and withstands >100,000 write cycles, making the DS1086HU-C01+ suitable for unattended or remote-deployed equipment.
What is the minimum time required for the DS1086HU-C01+ output to stabilize after power-up?
The DS1086HU-C01+ requires a power-up stabilization time (tpor + tstab) of 0.1ms to 0.5ms, defined as the interval between VCC reaching valid level and the OUT signal achieving stable frequency and duty cycle. This delay equals approximately 512 master clock cycles, so actual duration scales inversely with programmed output frequency - e.g., ~5.3µs at 97.1MHz, ~100µs at 5MHz.
DS1086HU-C01+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- PLL:
- -
- Input:
- -
- Output:
- -
- Number of Circuits:
- -
- Ratio - Input:Output:
- -
- Differential - Input:Output:
- -
- Frequency - Max:
- -
- Divider/Multiplier:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
DS1086HU-C01+ FAQ
1.How can I place an order for DS1086HU-C01+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1086HU-C01+ 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 DS1086HU-C01+ reliable?
The price and inventory of DS1086HU-C01+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1086HU-C01+ is usually 5 days.
3.What payment methods are accepted for DS1086HU-C01+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1086HU-C01+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1086HU-C01+?
DS1086HU-C01+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1086HU-C01+ 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 DS1086HU-C01+?
For technical support, including DS1086HU-C01+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1086HU-C01+ requirements.
6.How does Aetrix verify that DS1086HU-C01+ is sourced from the original manufacturer or authorized distributors?
All DS1086HU-C01+ 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 DS1086HU-C01+ meets industry standards.
7.What is the process for return or replacement of DS1086HU-C01+?
All DS1086HU-C01+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1086HU-C01+, 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 DS1086HU-C01+ part is unused and in its original packaging.
Return procedure for DS1086HU-C01+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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