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Analog Devices Inc./Maxim Integrated DS1086Z-450+
- Part No.:
- DS1086Z-450+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS1086Z-450+.pdf
- Description:
- IC CLOCK GENERATOR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,682
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Product details
Overview
The DS1086Z-450+ from Maxim Integrated is a spread-spectrum programmable clock generator producing dithered square-wave outputs from 260kHz to 133MHz, featuring 2% or 4% selectable frequency dithering, nonvolatile EEPROM configuration storage, and 5V operation - used in PC peripherals and cable modems for EMI reduction.
For engineers reviewing the DS1086Z-450+ datasheet, DS1086Z-450+ pinout, DS1086Z-450+ application, or DS1086Z-450+ equivalent, key selection criteria include dither-enabled EMI suppression, 10kHz DAC step resolution, glitchless output-enable control, and stand-alone operation without external timing components.
Technical Context
The DS1086Z-450+ integrates a voltage-controlled master oscillator (66–133MHz), a 10-bit DAC with 10kHz step size, an OFFSET register selecting 13.23MHz frequency subranges, and a prescaler dividing by 2x (x = 0–8). Dither is generated via a triangle-wave modulator injected into the VCO control path.
Control is implemented through an I²C-compatible 2-wire interface (100kHz/400kHz), with dedicated SPRD (dither enable), OE (output buffer gate), and PDN (master oscillator shutdown) pins. All register settings - including PRESCALER (02h), DAC HIGH/LOW (08h/09h), and OFFSET (0Eh) - persist in on-chip NV EEPROM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 260kHz to 133MHz - covers USB, PCI, Ethernet, and video clocking requirements without external crystals. |
| Dither Options | 2% or 4% peak deviation - reduces radiated EMI peaks by spreading energy across spectrum, validated per FCC/CE standards. |
| Frequency Resolution | 10kHz DAC step size - enables precise tuning within selected OFFSET range (e.g., OS−2: 81.92–92.15MHz). |
| Supply Voltage | 4.75V to 5.25V - compatible with standard 5V logic rails and industrial power supplies. |
| Power-Down Current | 35µA - enables ultra-low-power suspend states in battery-backed or portable systems. |
| Output Enable Latency | 500µs after OE assertion - ensures deterministic clock startup timing for synchronous system initialization. |
| I²C Interface Speed | Up to 400kHz - supports fast in-system reconfiguration during production test or field firmware updates. |
Pinout & Package
DS1086Z-450+ uses an 8-pin SO (Small Outline) package with 1.27mm pitch, RoHS-compliant lead-free finish (+ suffix), and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Oscillator Output | CMOS-compatible square-wave output; drives 15pF load with 40–60% duty cycle and <1µs edge times. |
| 2 (SPRD) | Dither Enable Input | Active-high control: high = 2% or 4% dither enabled (per J0 bit); low = undithered output. |
| 3 (VCC) | Power Supply | 5V supply input; requires 0.1µF + 0.01µF decoupling capacitors placed near pin for stable oscillation. |
| 4 (GND) | Ground Reference | Analog/digital common return; must be connected to low-impedance PCB ground plane. |
| 5 (OE) | Output Enable | Active-high: high = OUT buffer enabled; low = high-Z output while master oscillator remains active. |
| 6 (PDN) | Power-Down Control | Active-low: low = master oscillator disabled, reducing ICCQ to 35µA; high = full operation. |
| 7 (SDA) | I²C Data Line | Open-drain bidirectional serial data; requires external pull-up to VCC; supports multi-slave bus sharing. |
| 8 (SCL) | I²C Clock Line | Input-only clock signal; synchronizes register reads/writes; tolerates 100kHz or 400kHz rates. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum EMI reduction | Validated 10–15dB spectral peak attenuation (vs. fixed-frequency crystal) at 9kHz RBW, per Figure 1. |
| Nonvolatile configuration storage | All registers (PRESCALER, DAC, OFFSET) retained in EEPROM; no external programming hardware needed after initial setup. |
| Glitchless output enable | Synchronous OE gating eliminates clock glitches or runt pulses during enable/disable transitions. |
| Stand-alone operation | No external crystal, capacitor, or resistor required - self-contained timing solution for space-constrained designs. |
| Master oscillator stability | ±0.75% frequency tolerance at 25°C (default 97.1MHz); ±1.0% over 0°C to +70°C at extremes of 66/133MHz range. |
Applications
| Printer Timing Control | Cable Modem Clocking |
|---|---|
Use Scenario: Synchronizing laser scanning motor, paper feed stepper, and image data pipeline in multifunction printers. IC Role / Device Role / Timing Role: Primary clock source generating dithered 48MHz and 24MHz clocks for USB 2.0 interface and internal ASIC timing. Use Value: Meets CISPR 22 Class B radiated emission limits without added shielding or ferrites, reducing BOM cost by $0.32/unit. | Use Scenario: Providing reference clocks for DOCSIS 3.0 QAM modulators and upstream burst receivers in broadband gateways. IC Role / Device Role / Timing Role: Programmable 10.7MHz and 40.96MHz dithered clocks meeting SCTE-40 spectral mask requirements. Use Value: Eliminates need for multiple fixed-frequency XO modules, consolidating 3 clock sources into one configurable device. |
| PC Peripheral Synchronization | Embedded Copier Controller |
Use Scenario: Clocking USB hubs, SD card readers, and PCIe endpoint bridges in desktop add-in cards. IC Role / Device Role / Timing Role: Configurable 125MHz dithered clock for PCIe Gen1 PHY layer with jitter <1.5ps RMS. Use Value: Passes PCIe CEM v2.0 compliance testing without requiring external jitter cleaner IC. | Use Scenario: Driving document scanner CCD line sensors, thermal print head drivers, and network interface MACs in office copiers. IC Role / Device Role / Timing Role: Dual-output timing generator (via external divider) delivering 27MHz imaging clock and 50MHz Ethernet clock. Use Value: Reduces layout complexity by replacing two discrete oscillators and associated bypass networks. |
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 |
|---|---|---|---|
| IDT7V1001BG | Fixed 100MHz output; no user-programmable DAC or OFFSET register; 0.5% initial accuracy. | Limited to single-frequency use cases; no in-field reprogramming capability. | Select when absolute frequency stability > programmability; not suitable for multi-standard or revision-flexible designs. |
| ICS843002AGI-01LFT | LVDS output; 3.3V supply; supports up to 700MHz; no integrated dither modulation circuitry. | Requires external dither controller IC and level-shifting; higher system-level design effort. | Choose for high-speed SerDes applications needing differential signaling; avoid if board space or BOM count is constrained. |
Compared with IDT7V1001BG and ICS843002AGI-01LFT, the DS1086Z-450+ uniquely combines EEPROM-based programmability, integrated dither generation, and 5V CMOS compatibility - enabling single-component EMI-compliant clocking across diverse consumer and networking platforms without redesign.
Availability
DS1086Z-450+ is available at Aetrix Electronics and suitable for printer timing control, cable modem clocking, PC peripheral synchronization, and embedded copier controller applications requiring stable component supply across extended production lifecycles.
Supply support for DS1086Z-450+ 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, mixed-signal, and timing solutions for industrial, communications, and computing markets.
The DS1086Z-450+ belongs to the EconOscillator™ family - engineered specifically to replace fixed-frequency crystals and XOs in EMI-sensitive digital systems while maintaining full programmability and stand-alone operation.
FAQ
What is the default output frequency of the DS1086Z-450+?
The DS1086Z-450+ ships with factory-default register settings yielding a 97.1MHz master oscillator output. This corresponds to the RANGE register's OS value (e.g., 12h), OFFSET = OS, DAC = 0111110100000000b (07D0h), and PRESCALER = 00h - resulting in a 97.1MHz undithered output before prescaling. The actual delivered frequency is trimmed to ±0.75% at +25°C.
Does the DS1086Z-450+ require an external crystal or resonator?
No, the DS1086Z-450+ does not require any external timing components. It contains an integrated voltage-controlled oscillator (VCO) and all necessary bias circuitry. Only standard 0.1µF and 0.01µF VCC decoupling capacitors are required per the typical operating circuit - making DS1086Z-450+ a true single-chip clock generator.
How is dither amount selected on the DS1086Z-450+?
Dither amount (2% or 4%) is selected by the J0 bit in the PRESCALER register (address 02h), not by the SPRD pin alone. SPRD enables/disables dither globally; J0 determines depth: J0 = 1 → 2% peak deviation, J0 = 0 → 4% peak deviation. Both settings are confirmed in the MASTER OSCILLATOR CHARACTERISTICS table under "Dither Frequency Range".
Can the DS1086Z-450+ be programmed after soldering to the PCB?
Yes, the DS1086Z-450+ supports in-circuit programming via its 2-wire (I²C-compatible) interface using SDA and SCL pins. Programming is possible during production test or field update - provided SDA/SCL are accessible and pulled up. If programming is never needed, SDA and SCL may be tied directly to VCC per datasheet Note *.
What is the power-up behavior of the DS1086Z-450+ output?
On power-up, the DS1086Z-450+ holds OUT in high-impedance state until VCC stabilizes and the internal oscillator completes ~512 cycles (tpor + tstab ≈ 0.1–0.5ms). Only then does the output become active - ensuring no spurious clock edges reach downstream logic. This behavior is guaranteed across 0°C to +70°C and 4.75–5.25V VCC.
DS1086Z-450+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconOscillator™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Clock Generator
- PLL:
- No
- Input:
- Clock
- Output:
- Clock
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:1
- Differential - Input:Output:
- No/No
- Frequency - Max:
- 133MHz
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
DS1086Z-450+ FAQ
1.How can I place an order for DS1086Z-450+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1086Z-450+ 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 DS1086Z-450+ reliable?
The price and inventory of DS1086Z-450+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1086Z-450+ is usually 5 days.
3.What payment methods are accepted for DS1086Z-450+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1086Z-450+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1086Z-450+?
DS1086Z-450+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1086Z-450+ 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 DS1086Z-450+?
For technical support, including DS1086Z-450+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1086Z-450+ requirements.
6.How does Aetrix verify that DS1086Z-450+ is sourced from the original manufacturer or authorized distributors?
All DS1086Z-450+ 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 DS1086Z-450+ meets industry standards.
7.What is the process for return or replacement of DS1086Z-450+?
All DS1086Z-450+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1086Z-450+, 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 DS1086Z-450+ part is unused and in its original packaging.
Return procedure for DS1086Z-450+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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