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Analog Devices Inc./Maxim Integrated DS1091LUA-033/V+
- Part No.:
- DS1091LUA-033/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1091LUA-033/V+.pdf
- Description:
- IC SS CLOCK GENERATOR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,553
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Product details
Overview
DS1091LUA-033/V+ from Maxim Integrated is an automotive-grade, factory-programmed spread-spectrum clock oscillator delivering a center-dithered 33.3MHz output with ±0.25% nominal accuracy at +25°C, ±1.75% across -40°C to +125°C, and 3.0V–3.6V supply operation in an 8-pin µMAX® package. It reduces EMI in infotainment systems and LCD displays via pin-selectable dither magnitude (0%, ±1%, ±2%, ±4%) and rate.
For engineers reviewing the DS1091LUA-033/V+ datasheet, DS1091LUA-033/V+ pinout, DS1091LUA-033/V+ application, or DS1091LUA-033/V+ equivalent, key selection criteria include automotive temperature compliance (-40°C to +125°C), center-spread spectrum capability, dither configurability via SEL0/SEL1/DR pins, and RoHS-compliant lead-free packaging.
Technical Context
The DS1091LUA-033/V+ implements a factory-trimmed master oscillator with integrated triangle-wave generator and dither-rate divider to modulate output frequency around its programmed 33.3MHz center. Dither magnitude and rate are controlled exclusively by digital inputs SEL0, SEL1, and DR - no external components or configuration registers required.
It operates as a self-contained, single-output clock source with CMOS-compatible output drive (VOH ≥ 2.4V @ -4mA, VOL ≤ 0.4V @ 4mA), 1.02ns typical rise time, and 1.13ns typical fall time into 12pF load. Power-up behavior holds OUT low for ≤0.1ms to prevent spurious transitions during supply ramp.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 33.3MHz center frequency, factory-programmed and fixed for DS1091LUA-033/V+ |
| Frequency Accuracy | ±0.25% at +25°C; ±1.75% over full -40°C to +125°C and 3.0V–3.6V supply range |
| Dither Type | Center-spread only (DS1091LUA variant); supports 0%, ±1%, ±2%, ±4% modulation depth |
| Supply Voltage | 3.0V to 3.6V - ensures compatibility with automotive 3.3V rail systems with margin |
| Operating Temperature | -40°C to +125°C - qualified per AEC-Q100 stress test requirements for automotive use |
| Output Rise/Fall Time | 1.02ns / 1.13ns typical into 12pF - enables clean edge integrity for high-speed timing interfaces |
| Package | 8-pin µMAX® (U8+1), RoHS-compliant, lead(Pb)-free, footprint compatible with 21-0036 outline |
Pinout & Package
DS1091LUA-033/V+ is housed in an 8-pin µMAX® package (outline 21-0036, land pattern 90-0092), measuring 3.0mm × 3.0mm × 0.8mm with exposed pad grounded per Maxim's recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | CMOS square-wave clock output; drives up to 15pF–50pF load with 50% duty cycle below 33.3MHz |
| 2 | VCC | Main power supply input; requires local 0.01µF + 0.1µF ceramic decoupling per Maxim layout guidelines |
| 3 | GND | Analog/digital ground reference; substrate tied to GND per chip design |
| 4 | SEL1 | Dither magnitude MSB input; logic level selects ±1%/±2%/±4% or 0% center dither per Table 1 |
| 5 | SEL0 | Dither magnitude LSB input; used with SEL1 to configure four discrete dither percentages |
| 6, 7 | N.C. | No internal connection; must be left unconnected or tied to GND/VCC per PCB routing constraints |
| 8 | DR | Dither rate selector; sets modulation frequency based on fOUT and Table 2 (e.g., ~13.2kHz or ~6.6kHz at 33.3MHz) |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | Qualified to -40°C to +125°C operating range with guaranteed parametric performance per AEC-Q100 |
| Pin-selectable dither control | Three logic inputs (SEL0/SEL1/DR) fully configure dither % and rate without firmware or I²C interface |
| Factory-programmed frequency | 33.3MHz output permanently set at wafer/test - eliminates external crystal or PLL tuning complexity |
| EMI reduction capability | Up to 14dB spectral attenuation demonstrated at ±4% center dither (DS1091LUA-033/V+ toc08) |
| Low-power active operation | 16mA typical supply current at 3.6V, 66.6MHz - scalable down with lower fOUT and VCC |
Applications
| Automotive Infotainment Systems | LCD Display Timing Control |
|---|---|
|
Use Scenario: Clocking video processor, GPU, and display interface ICs in head-unit and digital cluster modules. IC Role / Device Role / Timing Role: Primary spread-spectrum system clock generator providing EMI-compliant timing to reduce radiated emissions in compact enclosures. Use Value: Enables compliance with CISPR 25 Class 5 radiated emission limits without added shielding or ferrites. |
Use Scenario: Driving LVDS or RGB interface timing for automotive-grade TFT-LCD panels. IC Role / Device Role / Timing Role: Fixed-frequency, low-jitter (0.3% RMS at 50MHz) clock source synchronized to display pixel clock requirements. Use Value: Eliminates visible beat patterns and noise bars on screen by spreading energy away from narrowband peaks. |
| Industrial HMI Panels | POS Terminal Baseboards |
|
Use Scenario: Providing stable, low-EMI clock to ARM-based HMI controllers in factory automation equipment. IC Role / Device Role / Timing Role: System clock generator supporting real-time OS execution and touch controller synchronization. Use Value: Maintains timing integrity across wide industrial temperature swings while meeting EN 55032 Class B limits. |
Use Scenario: Clocking payment processing SoCs and secure element interfaces in retail POS terminals. IC Role / Device Role / Timing Role: Automotive-qualified oscillator ensuring reliable boot and cryptographic operation under variable ambient conditions. Use Value: Guarantees deterministic startup (<0.1ms power-up time) and long-term frequency stability for PCI PTS-certified designs. |
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 |
|---|---|---|---|
| Si5351A-B-GM | Programmable I²C clock generator (up to 3 outputs); requires external crystal and configuration firmware | Supports multi-frequency, multi-output systems; not factory-programmed or automotive-qualified | Choose when flexible frequency synthesis and multiple clocks are needed - not for drop-in 33.3MHz replacement |
| ICS843002AGI-01LFT | Fixed 33.333MHz spread-spectrum oscillator; ±100ppm (±0.01%) initial accuracy; -40°C to +85°C commercial temp range | Lacks automotive temperature rating and pin-selectable dither; uses different package (8-TSSOP) | Consider only for non-automotive industrial use where tighter initial accuracy outweighs temperature range needs |
Compared with Si5351A-B-GM and ICS843002AGI-01LFT, DS1091LUA-033/V+ uniquely combines AEC-Q100 automotive qualification, pin-configurable center-spread dither, and factory-set 33.3MHz output - eliminating configuration overhead and enabling direct integration into safety-critical timing paths.
Availability
DS1091LUA-033/V+ is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial HMI panels, and POS terminal baseboards requiring stable component supply with guaranteed automotive temperature performance and EMI-reduction capability.
Supply support for DS1091LUA-033/V+ 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 automotive, industrial, and communications markets - emphasizing reliability, integration, and application-specific optimization.
The DS1091L series was developed specifically as a low-cost, pin-configurable spread-spectrum oscillator family targeting EMI-sensitive automotive and industrial applications where fixed-frequency clocks require spectral shaping without added complexity.
FAQ
What is the exact output frequency and tolerance of DS1091LUA-033/V+?
The DS1091LUA-033/V+ is factory-programmed to deliver a precise 33.3MHz center frequency. Its nominal accuracy is ±0.25% at +25°C, and it maintains ±1.75% total variation across the full automotive temperature range (-40°C to +125°C) and supply voltage range (3.0V to 3.6V). This specification is guaranteed per the device's AC Electrical Characteristics table and confirmed in the Ordering Information section of the datasheet.
Does DS1091LUA-033/V+ support down-spread spectrum mode?
No, DS1091LUA-033/V+ supports center-spread spectrum only. The "UA" suffix explicitly denotes the center-dither variant (DS1091LUA), whereas down-spread is implemented in the DS1091LUB family (e.g., DS1091LUB-033+). Pin configurations and internal dither generator architecture differ between UA and UB variants - DS1091LUA-033/V+ cannot be configured for down-dither operation.
How is dither magnitude selected on DS1091LUA-033/V+?
Dither magnitude on DS1091LUA-033/V+ is selected using the logic states of SEL0 (Pin 5) and SEL1 (Pin 4), per Table 1 in the datasheet. Valid combinations are: SEL1=0/SEL0=0 → 0% dither; SEL1=0/SEL0=1 → ±1%; SEL1=1/SEL0=0 → ±2%; SEL1=1/SEL0=1 → ±4%. These are hardwired logic inputs - no pull-up/pull-down resistors are required unless defining default state during power-up.
What package type and RoHS status does DS1091LUA-033/V+ have?
DS1091LUA-033/V+ uses the 8-pin µMAX® package (package code U8+1), with outline number 21-0036 and land pattern 90-0092. The "+" suffix confirms it is lead(Pb)-free and RoHS-compliant. The "/V" indicates automotive qualification, and the full marking "/V+" certifies both automotive temperature range and RoHS compliance per Maxim's ordering conventions.
Can DS1091LUA-033/V+ operate outside the 3.0V–3.6V supply range?
No - DS1091LUA-033/V+ is specified only for 3.0V to 3.6V operation per Recommended Operating Conditions. Absolute maximum ratings allow VCC up to +6.0V, but functional operation, parametric guarantees (accuracy, dither, jitter), and reliability are valid solely within 3.0V–3.6V. Operation below 3.0V may cause failure to start or unstable output; above 3.6V risks exceeding safe operating area and invalidates automotive qualification.
DS1091LUA-033/V+ 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:
- Tube
- Product Status:
- Not For New Designs
- 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:
- 33.3MHz
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 8-uMAX/uSOP
DS1091LUA-033/V+ FAQ
1.How can I place an order for DS1091LUA-033/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1091LUA-033/V+ 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 DS1091LUA-033/V+ reliable?
The price and inventory of DS1091LUA-033/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1091LUA-033/V+ is usually 5 days.
3.What payment methods are accepted for DS1091LUA-033/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1091LUA-033/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1091LUA-033/V+?
DS1091LUA-033/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1091LUA-033/V+ 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 DS1091LUA-033/V+?
For technical support, including DS1091LUA-033/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1091LUA-033/V+ requirements.
6.How does Aetrix verify that DS1091LUA-033/V+ is sourced from the original manufacturer or authorized distributors?
All DS1091LUA-033/V+ 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 DS1091LUA-033/V+ meets industry standards.
7.What is the process for return or replacement of DS1091LUA-033/V+?
All DS1091LUA-033/V+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1091LUA-033/V+, 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 DS1091LUA-033/V+ part is unused and in its original packaging.
Return procedure for DS1091LUA-033/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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