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Analog Devices Inc./Maxim Integrated DS1091LUA-10A/V+
- Part No.:
- DS1091LUA-10A/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1091LUA-10A/V+.pdf
- Description:
- IC SS CLOCK GENERATOR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,014
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Product details
Overview
DS1091LUA-10A/V+ from Maxim Integrated is an automotive-grade spread-spectrum clock oscillator delivering a factory-programmed 10.38MHz center-dithered 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-10A/V+ datasheet, DS1091LUA-10A/V+ pinout, DS1091LUA-10A/V+ application, or DS1091LUA-10A/V+ equivalent, key selection criteria include its AEC-Q200-compliant automotive temperature range, center-spread dithering capability, 8-pin µMAX footprint, and factory-trimmed frequency stability without external components.
Technical Context
The DS1091LUA-10A/V+ integrates a factory-programmed master oscillator with a triangle-wave generator that modulates output frequency to achieve center-spectrum spreading. Its dither magnitude is set by SEL0/SEL1 logic states, while DR selects dither rate based on output frequency bands defined in Table 2 (n = 7 for fOUT = 10.38MHz → dither rate = fOUT / 2n ≈ 8.3kHz at DR = 1).
It operates exclusively as a fixed-frequency spread-spectrum source - no PLL, no frequency synthesis, no programmable registers. All configuration is static via digital input pins (SEL0, SEL1, DR), with no serial interface or dynamic control. Power-up behavior holds OUT low for ≤0.1ms before stable oscillation begins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 10.38MHz - factory-trimmed, center-spread spectrum output |
| Frequency Accuracy | ±0.25% at +25°C - ensures timing margin for synchronous interfaces |
| Temp Range | -40°C to +125°C - AEC-Q200 qualified for under-hood automotive use |
| Supply Voltage | 3.0V to 3.6V - compatible with automotive 3.3V rail with headroom |
| Dither Magnitude | Pin-selectable: 0%, ±1%, ±2%, ±4% - enables EMI reduction tuning per board layout |
| Output Rise/Fall Time | 1.02ns / 1.13ns at 12pF - supports clean signal integrity into 50Ω loads |
| Supply Current | 16mA typical at 3.6V, 10.38MHz - enables thermal design for dense PCBs |
Pinout & Package
DS1091LUA-10A/V+ uses an 8-pin µMAX® package (outline 21-0036, land pattern 90-0092), RoHS-compliant and lead(Pb)-free. Pin 1 is OUT; pins 6 and 7 are no-connect; VCC is on pins 2 and 4; GND is pin 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Spread-spectrum clock output | CMOS-compatible square wave; drives 15pF load with 50% duty cycle at ≤33.3MHz |
| 2, 4 (VCC) | Power supply inputs | Decoupled dual VCC pins reduce supply noise coupling into oscillator core |
| 3 (GND) | Ground reference | Substrate tied to GND; requires low-inductance connection to minimize jitter |
| 5 (SEL0) | Dither magnitude select bit 0 | With SEL1, selects ±1%/±2%/±4% center dither or 0% (static mode) |
| 8 (DR) | Dither rate select | Chooses high/low dither frequency band; for 10.38MHz, sets ~8.3kHz or ~4.1kHz rate |
Key Features
| Feature | Design Value |
|---|---|
| Center-spectrum spreading | Reduces peak radiated emissions by up to 14dB at 33.3MHz carrier (±4% dither), easing EMC compliance |
| Factory-trimmed frequency | Eliminates need for external crystal, capacitors, or calibration - reduces BOM count and layout area |
| Automotive temperature range | Validated operation from -40°C to +125°C enables placement near heat sources (e.g., display drivers) |
| Pin-selectable dither control | Enables hardware-based EMI tuning without firmware changes or I²C lines - ideal for cost-sensitive designs |
| Low power-up delay | 0.1ms max hold-low time prevents false clock edges during MCU reset sequencing |
Applications
| Automotive Infotainment Head Units | LCD Display Timing Control |
|---|---|
Use Scenario: Clocking video processor, GPU, and display interface (LVDS/eDP) in dashboard clusters and center consoles. IC Role / Device Role / Timing Role: Primary spread-spectrum system clock source reducing EMI from high-speed pixel data buses. Use Value: Meets CISPR 25 Class 5 radiated emission limits without added shielding or ferrites, lowering system cost. | Use Scenario: Driving timing controller ICs in automotive-grade TFT-LCD modules used in instrument panels. IC Role / Device Role / Timing Role: Provides stable, low-jitter pixel clock with dithering to suppress harmonics interfering with touch sensing or CAN bus signals. Use Value: Enables single-layer clock routing over sensitive analog sections, improving layout yield and reducing rework. |
| Industrial HMI Panels | POS Terminal Display Systems |
Use Scenario: Synchronizing ARM Cortex-A/M series SoCs and display controllers in ruggedized human-machine interfaces. IC Role / Device Role / Timing Role: Low-drift clock generator supporting long-term reliability in unventilated enclosures operating at 85°C ambient. Use Value: Maintains <±1.75% frequency stability across voltage and temperature, ensuring UART/I²C timing margins remain intact. | Use Scenario: Clocking display driver and payment interface ICs in retail point-of-sale terminals deployed in wide ambient ranges. IC Role / Device Role / Timing Role: Automotive-qualified oscillator providing robust startup and immunity to power rail transients during AC/DC adapter switching. Use Value: Eliminates clock-related boot failures observed with commercial-grade crystals in field deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar spread-spectrum oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si5351A-B-GM | Programmable I²C clock generator; 8kHz–200MHz output; requires external crystal and configuration firmware | Supports multi-output, fractional synthesis, and dynamic frequency changes - unsuitable for pin-strapped simplicity | Choose only if variable clock frequencies or multiple outputs are required; adds software overhead and BOM complexity |
| ICS843002AGI-01LFT | Fixed 10MHz LVDS spread-spectrum oscillator; ±100ppm initial accuracy; -40°C to +85°C industrial grade | Lacks automotive temp rating and pin-selectable dither; limited to fixed ±0.4% down-spread | Select only for non-automotive industrial use where extended temperature is not required and dither flexibility is unnecessary |
Compared with Si5351A-B-GM and ICS843002AGI-01LFT, DS1091LUA-10A/V+ delivers AEC-Q200 qualification, pin-configurable center-spread dither, and guaranteed ±0.25% accuracy at +25°C - making it optimal for cost-sensitive, fixed-frequency automotive timing where zero-firmware integration and EMI headroom are critical.
Availability
DS1091LUA-10A/V+ is available at Aetrix Electronics and suitable for automotive infotainment, industrial HMI, and POS terminal designs requiring stable component supply, AEC-Q200 compliance, and EMI-reduction capability without firmware dependency.
Supply support for DS1091LUA-10A/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.
The DS1091L family targets EMI-sensitive embedded systems needing factory-calibrated, pin-configurable spread-spectrum clocks - eliminating crystal matching, reducing layout risk, and accelerating time-to-compliance.
FAQ
What is the exact factory-programmed output frequency of DS1091LUA-10A/V+?
The DS1091LUA-10A/V+ is factory-programmed to deliver a precise 10.38MHz center-spread spectrum output. This value is laser-trimmed during manufacturing and specified in the Ordering Information table on page 7 of the datasheet. No external components or configuration are needed to achieve this frequency - DS1091LUA-10A/V+ operates immediately upon power application with VCC between 3.0V and 3.6V.
Does DS1091LUA-10A/V+ support down-spectrum dithering?
No, DS1091LUA-10A/V+ supports center-spectrum dithering only. The "UA" suffix denotes the center-dither variant; down-dither variants carry the "UB" suffix (e.g., DS1091LUB-xxx). DS1091LUA-10A/V+ accepts SEL0/SEL1 inputs to select 0%, ±1%, ±2%, or ±4% center-spread magnitudes - it cannot produce asymmetric down-spread outputs like DS1091LUB devices.
What is the maximum allowable dither rate for DS1091LUA-10A/V+ at 10.38MHz?
At 10.38MHz output, DS1091LUA-10A/V+ supports two dither rates determined by the DR pin state and Table 2: with DR = 1, n = 7 → dither rate = fOUT / 2n ≈ 8.3kHz; with DR = 0, n = 8 → dither rate ≈ 4.1kHz. These values are derived directly from the datasheet's dither rate equation and validated for the 8.334–16.667MHz output band. DS1091LUA-10A/V+ does not support rates outside this calculated range.
Is DS1091LUA-10A/V+ pin-compatible with other DS1091L variants in the same package?
Yes, all DS1091L variants - including DS1091LUA-10A/V+, DS1091LUA-033/V+, and DS1091LUB-027/V+ - share identical 8-pin µMAX pinouts and electrical interfaces. Pin functions (OUT, VCC, GND, SEL0, SEL1, DR, N.C.) are consistent across the family. However, functional behavior differs: UA parts provide center dither, UB parts provide down dither, and frequency values are factory-set per order code - DS1091LUA-10A/V+ must not be substituted with a UB variant without verifying dither type requirements.
What decoupling capacitance is recommended for DS1091LUA-10A/V+?
Maxim recommends using both 0.01µF and 0.1µF high-quality ceramic capacitors placed as close as possible to the VCC and GND pins of DS1091LUA-10A/V+. This dual-capacitor approach suppresses high-frequency noise (0.01µF) and bulk supply ripple (0.1µF), minimizing jitter and ensuring stable oscillation. Layout best practice requires shortest possible traces to these pins - DS1091LUA-10A/V+ performance degrades measurably if decoupling exceeds 3mm trace length.
DS1091LUA-10A/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:
- 10.38MHz
- 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-10A/V+ FAQ
1.How can I place an order for DS1091LUA-10A/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1091LUA-10A/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-10A/V+ reliable?
The price and inventory of DS1091LUA-10A/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-10A/V+ is usually 5 days.
3.What payment methods are accepted for DS1091LUA-10A/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1091LUA-10A/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1091LUA-10A/V+?
DS1091LUA-10A/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1091LUA-10A/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-10A/V+?
For technical support, including DS1091LUA-10A/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1091LUA-10A/V+ requirements.
6.How does Aetrix verify that DS1091LUA-10A/V+ is sourced from the original manufacturer or authorized distributors?
All DS1091LUA-10A/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-10A/V+ meets industry standards.
7.What is the process for return or replacement of DS1091LUA-10A/V+?
All DS1091LUA-10A/V+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1091LUA-10A/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-10A/V+ part is unused and in its original packaging.
Return procedure for DS1091LUA-10A/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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