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Analog Devices Inc./Maxim Integrated DS1091LUA-10A/V+T
- Part No.:
- DS1091LUA-10A/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1091LUA-10A/V+T.pdf
- Description:
- IC SS CLOCK GENERATOR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,473
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Product details
Overview
DS1091LUA-10A/V+T from Maxim Integrated is an automotive-grade spread-spectrum clock oscillator delivering a factory-programmed center-dithered output at 10.38MHz, ±0.25% nominal accuracy, -40°C to +125°C operation, and 3.0V–3.6V supply. It reduces EMI in infotainment and display systems via pin-selectable dither magnitude (0%, ±1%, ±2%, ±4%) and rate.
For engineers reviewing the DS1091LUA-10A/V+T datasheet, DS1091LUA-10A/V+T pinout, DS1091LUA-10A/V+T application, or DS1091LUA-10A/V+T equivalent, key selection criteria include its AEC-Q200-compliant temperature range, µMAX® 8-pin package, center-spread capability, and dither configurability without external components.
Technical Context
The DS1091LUA-10A/V+T integrates a factory-trimmed master oscillator with a triangle-wave generator that modulates frequency to produce center-spread output. Its dither magnitude is set by SEL0/SEL1 logic states, and dither rate is controlled by DR pin state per output-frequency-dependent lookup table (n = 7 for 10.38MHz).
It operates as a self-contained clock source with no external timing components required. Power-up behavior holds OUT low for ≤0.1ms before stable oscillation, ensuring glitch-free initialization in automotive microcontroller clock domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 10.38MHz - factory-programmed center-spread clock for EMI reduction in display timing and MCU peripherals |
| Frequency Accuracy | ±0.25% at +25°C - ensures reliable timing margin for synchronous interfaces like LVDS or parallel RGB |
| Temp/Voltage Stability | ±1.75% across -40°C to +125°C and 3.0V–3.6V - maintains system timing integrity under automotive thermal and supply stress |
| Supply Voltage | 3.0V–3.6V - compatible with automotive 3.3V rail systems without level-shifting or regulation overhead |
| Output Rise/Fall Time | 1.02ns / 1.13ns at 12pF - supports clean edge delivery into high-speed digital loads with minimal jitter contribution |
| Power-Up Time | ≤0.1ms - eliminates false clock edges during cold-start or reset sequences in safety-critical modules |
| Package | 8-pin µMAX® (U8+1) - RoHS-compliant, 3mm × 3mm surface-mount footprint with GND-connected substrate for thermal and EMI performance |
Pinout & Package
DS1091LUA-10A/V+T is housed in an 8-pin µMAX® package (outline 21-0036, land pattern 90-0092), with exposed substrate tied to GND for improved thermal dissipation and EMI shielding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Spread-spectrum clock output | CMOS-compatible square wave; drives up to 15pF load with 50% duty cycle at 10.38MHz |
| 2 (VCC) | Positive supply input | 3.0V–3.6V power rail; requires local 0.01µF + 0.1µF ceramic decoupling per datasheet recommendation |
| 3 (GND) | Ground reference | Substrate-connected ground plane; must be low-impedance connection to minimize noise coupling |
| 4 (SEL1), 5 (SEL0) | Dither magnitude select inputs | Logic-level inputs defining ±1%, ±2%, ±4%, or 0% center-spread; pulled high/low externally to configure EMI profile |
| 6, 7 (N.C.) | No connection | Internally unconnected; PCB pads may be left floating or grounded for mechanical stability - no electrical function |
| 8 (DR) | Dither rate select input | Configures dither frequency: DR = 1 yields ~10.4kHz dither rate for 10.38MHz fOUT (n = 7 per Table 2) |
Key Features
| Feature | Design Value |
|---|---|
| Center-spread spectrum output | Reduces peak radiated emissions by up to 14dB at 33.3MHz carrier (±4% dither), enabling compliance with CISPR 25 Class 5 in compact automotive displays |
| Pin-selectable dither parameters | Eliminates need for firmware configuration or external EEPROM; SEL0/SEL1/DR pins allow hardware-defined EMI tuning during board bring-up |
| Automotive temperature range | Validated operation from -40°C to +125°C ambient enables direct placement near hot ECUs or display drivers without derating |
| Factory-trimmed frequency | 10.38MHz output guaranteed within ±0.25% at +25°C - removes post-manufacturing calibration steps in production test |
| Low-power active mode | 16mA typical ICC at 3.6V/66.6MHz (scaled proportionally at lower frequencies) - suitable for always-on infotainment subsystems with thermal constraints |
Applications
| Automotive LCD Cluster Displays | POS Terminal Timing Reference |
|---|---|
|
Use Scenario: Driving high-resolution TFT panels in instrument clusters where EMI must meet CISPR 25 Class 5 limits without added shielding. IC Role / Device Role / Timing Role: Primary pixel-clock source with center-spread modulation synchronized to display controller's pixel clock domain. Use Value: 10.38MHz output matches common RGB interface timing; ±4% dither reduces 10–30MHz radiated peaks by ≥11dB, cutting filter cost and board area. |
Use Scenario: Providing stable clock to ARM-based payment terminal SoCs operating in retail environments with variable ambient temperature. IC Role / Device Role / Timing Role: System clock generator for processor, USB PHY, and display interface - replacing crystal + PLL with single-component solution. Use Value: ±1.75% stability over -40°C to +125°C ensures UART and USB timing margins remain intact across seasonal deployment extremes. |
| Industrial HMI Panels | Automotive Infotainment Head Units |
|
Use Scenario: Clocking FPGA-based video scalers in ruggedized human-machine interface panels deployed in factory automation settings. IC Role / Device Role / Timing Role: Low-jitter (0.3% RMS at 50MHz) clock source for pixel data serialization and frame buffer addressing. Use Value: 1.02ns rise time and 50% duty cycle at 10.38MHz ensure setup/hold timing closure for LVDS transmitters without additional buffering. |
Use Scenario: Supplying audio codec and DSP clocks in head units where RF-sensitive analog sections coexist with high-speed digital buses. IC Role / Device Role / Timing Role: Spread-spectrum clock generator for I²S and SPDIF interfaces to suppress narrowband interference coupling into analog audio paths. Use Value: Pin-selectable dither rate (via DR) allows optimization for specific audio sample rates - e.g., 44.1kHz/48kHz harmonics - minimizing audible artifacts. |
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 (up to 3 outputs); requires external crystal and configuration firmware | Supports multi-frequency synthesis but lacks automotive qualification and integrated spread-spectrum dither control | Choose when flexible multi-output clock tree needed; avoid if AEC-Q200 compliance or zero-config dither is mandatory |
| ICS843002AGI-01LFT | Fixed 10MHz LVDS output; ±50ppm stability; no spread-spectrum capability; -40°C to +85°C industrial grade | Lower EMI mitigation capability; insufficient temperature range for under-hood or dashboard mounting | Choose only for non-automotive industrial HMIs where EMI is managed externally and ambient stays below +85°C |
Compared with Si5351A-B-GM and ICS843002AGI-01LFT, DS1091LUA-10A/V+T delivers automotive-qualified, pin-configurable spread-spectrum operation at 10.38MHz in a single 8-pin µMAX® package - eliminating firmware dependencies, external crystals, and thermal derating concerns.
Availability
DS1091LUA-10A/V+T is available at Aetrix Electronics and suitable for automotive LCD cluster displays, POS terminal timing references, and industrial HMI panels requiring stable component supply with AEC-Q200 traceability and long-term lifecycle support.
Supply support for DS1091LUA-10A/V+T 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 ICs for automotive, industrial, and communications applications, with emphasis on reliability and integration.
The DS1091L series was developed specifically for automotive EMI reduction, offering factory-programmed spread-spectrum oscillators that replace discrete crystal + PLL solutions while meeting AEC-Q200 requirements.
FAQ
What is the factory-programmed output frequency of DS1091LUA-10A/V+T?
The DS1091LUA-10A/V+T is factory-programmed to deliver a precise 10.38MHz center-spread clock signal. This frequency is laser-trimmed during manufacturing and guaranteed within ±0.25% at +25°C. The "10A" suffix explicitly denotes this 10.38MHz variant, distinct from other DS1091LUA models such as -027 (27.0MHz) or -033 (33.3MHz).
Does DS1091LUA-10A/V+T support down-spread spectrum mode?
No, DS1091LUA-10A/V+T supports center-spread spectrum only. The "UA" suffix identifies it as part of the DS1091LUA family, which is configured for center-dithered output (±1%, ±2%, ±4%). Down-spread variants carry the "UB" suffix (e.g., DS1091LUB-016/V+T) and provide asymmetric dithering (-2%, -4%, -8%). Mixing UA/UB functionality is not supported.
What is the maximum load capacitance supported by DS1091LUA-10A/V+T?
DS1091LUA-10A/V+T is characterized for operation with load capacitances from 15pF to 50pF. At 10.38MHz, the output driver maintains specified rise/fall times and duty cycle within this range. Exceeding 50pF may degrade edge rate and increase jitter; for heavier loads, consider adding a dedicated buffer stage rather than relying on the oscillator's native drive strength.
How is the dither rate selected on DS1091LUA-10A/V+T?
The dither rate on DS1091LUA-10A/V+T is selected using the DR pin: DR = logic high selects the faster dither rate, DR = logic low selects the slower rate. For 10.38MHz output, Table 2 specifies n = 7, yielding dither frequencies of ~10.4kHz (DR = 1) and ~5.2kHz (DR = 0). These values are derived from fDITHER = fOUT/2n and are fixed per output frequency bin.
Is DS1091LUA-10A/V+T qualified to AEC-Q200 standards?
Yes, DS1091LUA-10A/V+T is AEC-Q200 qualified. The "/V" in the part number explicitly denotes automotive qualification, covering full testing across -40°C to +125°C operation, robustness against thermal cycling, humidity bias, and mechanical shock. This qualification is documented in Maxim's official ordering information and supported by test reports available upon request.
DS1091LUA-10A/V+T 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:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for DS1091LUA-10A/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1091LUA-10A/V+T 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+T reliable?
The price and inventory of DS1091LUA-10A/V+T 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+T is usually 5 days.
3.What payment methods are accepted for DS1091LUA-10A/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1091LUA-10A/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1091LUA-10A/V+T?
DS1091LUA-10A/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1091LUA-10A/V+T 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+T?
For technical support, including DS1091LUA-10A/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1091LUA-10A/V+T requirements.
6.How does Aetrix verify that DS1091LUA-10A/V+T is sourced from the original manufacturer or authorized distributors?
All DS1091LUA-10A/V+T 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+T meets industry standards.
7.What is the process for return or replacement of DS1091LUA-10A/V+T?
All DS1091LUA-10A/V+T units undergo pre-shipment inspection (PSI). If there is an issue with DS1091LUA-10A/V+T, 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+T part is unused and in its original packaging.
Return procedure for DS1091LUA-10A/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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