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Analog Devices Inc./Maxim Integrated DS1091LUA-030/V+T
- Part No.:
- DS1091LUA-030/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1091LUA-030/V+T.pdf
- Description:
- IC SS CLOCK GENERATOR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,318
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Product details
Overview
DS1091LUA-030/V+T from Maxim Integrated is an automotive-grade spread-spectrum clock oscillator delivering a factory-programmed 30.0MHz 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-030/V+T datasheet, DS1091LUA-030/V+T pinout, DS1091LUA-030/V+T application, or DS1091LUA-030/V+T equivalent, key selection criteria include automotive temperature compliance (-40°C to +125°C), center-spread dithering capability, 30.0MHz fixed frequency, µMAX package footprint, and RoHS-compliant lead-free construction.
Technical Context
The DS1091LUA-030/V+T implements a factory-trimmed master oscillator with integrated triangle-wave generator and dither-rate divider to modulate output frequency around 30.0MHz. Dither magnitude is selected via SEL0/SEL1 logic states; dither rate depends on DR pin state and output frequency per n-value lookup (n = 11 for 30.0MHz).
It operates exclusively in center-dither mode (DS1091LUA variant), supports no-dither operation, and features active-low power-up hold (tPU ≤ 0.1ms) to prevent spurious transitions. All I/O pins tolerate voltages up to VCC + 0.3V, and output drive meets CMOS-compatible levels (VOH ≥ 2.4V @ -4mA, VOL ≤ 0.4V @ 4mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 30.0MHz - factory-programmed, center-spread capable, no user tuning required |
| Frequency Accuracy | ±0.25% at +25°C - ensures stable timing reference for display pixel clocks and audio sampling |
| Temp Range | -40°C to +125°C - qualified for under-hood and dashboard electronics without derating |
| Supply Voltage | 3.0V to 3.6V - compatible with automotive 3.3V rail systems with ±10% tolerance margin |
| Dither Magnitude | 0%, ±1%, ±2%, ±4% - selectable via SEL0/SEL1 pins to optimize EMI reduction vs. jitter budget |
| Package | 8-pin µMAX® (U8+1) - 3mm × 3mm body, 0.65mm pitch, RoHS-compliant, surface-mount |
| Power-Up Time | ≤ 0.1ms - holds OUT low during startup to prevent false triggering of downstream logic |
Pinout & Package
DS1091LUA-030/V+T is housed in an 8-pin µMAX® package (outline 21-0036, land pattern 90-0092), with exposed pad connected to GND for thermal and EMI performance. Pins 6 and 7 are no-connect (N.C.) and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | CMOS Clock Output | 30.0MHz spread-spectrum square wave; drives 15pF load with <1.2ns rise/fall time |
| 2 (VCC) | Power Supply Input | 3.0V–3.6V supply; requires local 0.01µF + 0.1µF ceramic decoupling |
| 3 (GND) | Ground Reference | Substrate-connected ground; ties to PCB ground plane for noise immunity |
| 4 (SEL1) | Dither Magnitude Select | MSB input for 2-bit dither % selection (0% to ±4%); logic-high = 1 |
| 5 (SEL0) | Dither Magnitude Select | LSB input for 2-bit dither % selection; combined with SEL1 defines dither amplitude |
| 6, 7 (N.C.) | No Connection | Internally unconnected; must be left floating or tied to GND (not VCC) |
| 8 (DR) | Dither Rate Select | Selects dither frequency: DR = 1 → fDITHER = fOUT/22; DR = 0 → fOUT/24 for 30MHz |
Key Features
| Feature | Design Value |
|---|---|
| Center-spread spectrum modulation | Reduces peak radiated emissions by up to 14dB at 33.3MHz carrier (±4% dither), easing EMC certification |
| Automotive qualification | Validated for -40°C to +125°C operation with full electrical specs guaranteed over range |
| Pin-selectable dither control | Eliminates need for external configuration EEPROM or MCU GPIO; enables hardware-only EMI tuning |
| Factory-programmed frequency | 30.0MHz output shipped ready-to-use; no calibration or trimming required in system assembly |
| Low-jitter CMOS output | RMS jitter <0.3% at 50MHz enables reliable timing in high-speed serial interfaces and display controllers |
Applications
| Automotive Infotainment | LCD Display Timing |
|---|---|
|
Use Scenario: Clock source for head-unit SoC video processing and HDMI transmitter in vehicles. IC Role / Device Role / Timing Role: Primary spread-spectrum clock generator providing 30.0MHz pixel clock with EMI suppression. Use Value: Meets CISPR 25 Class 5 radiated emission limits without added shielding or ferrites. |
Use Scenario: Timing reference for automotive-grade TFT-LCD modules in instrument clusters. IC Role / Device Role / Timing Role: Fixed-frequency oscillator driving column/row drivers and gamma correction ICs. Use Value: Stable 30.0MHz output ensures consistent frame rate and eliminates visible flicker across temperature. |
| POS Terminal Interface | Industrial Control Panel |
|
Use Scenario: Synchronizing barcode scanner interface and secure element communication in retail terminals. IC Role / Device Role / Timing Role: Low-jitter clock source for UART and SPI peripherals operating in noisy retail environments. Use Value: ±1.75% accuracy over -40°C to +125°C prevents data corruption during cold-start or high-ambient operation. |
Use Scenario: Clocking PLC HMI controller and touch-screen digitizer in factory automation panels. IC Role / Device Role / Timing Role: EMI-reduced oscillator enabling CE/FCC compliance in compact metal-enclosed enclosures. Use Value: Pin-selectable dither allows field-level EMI optimization without firmware update or board change. |
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-based oscillator; 8kHz–200MHz range; requires external configuration | Supports multi-output and frequency agility; not preprogrammed or automotive-qualified | Choose for flexible prototyping or multi-frequency systems; avoid for AEC-Q200 production units |
| ICS843001AGI-03LF | Fixed 30MHz LVDS output; no spread-spectrum; ±50ppm stability; -40°C to +85°C only | Limited to commercial temp range; lacks EMI reduction; incompatible pinout and voltage | Acceptable only in non-automotive industrial panels where EMI is managed externally |
Compared with Si5351A-B-GM and ICS843001AGI-03LF, DS1091LUA-030/V+T delivers drop-in automotive reliability, factory-set 30.0MHz center-spread operation, and µMAX footprint compatibility-eliminating configuration overhead and thermal derating concerns in harsh environments.
Availability
DS1091LUA-030/V+T is available at Aetrix Electronics and suitable for automotive infotainment, LCD display timing, and industrial control panels requiring stable component supply with AEC-Q200-aligned qualification and long-term lifecycle support.
Supply support for DS1091LUA-030/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 solutions for automotive, industrial, and communications markets.
The DS1091L series targets EMI-sensitive automotive electronics, offering factory-programmed spread-spectrum oscillators that simplify EMC compliance without sacrificing timing accuracy or design flexibility.
FAQ
What is the output frequency and dither type of DS1091LUA-030/V+T?
The DS1091LUA-030/V+T is factory-programmed to deliver a precise 30.0MHz center-spread spectrum output. As indicated by the "UA" suffix, it supports center-dithering only (not down-dithering), with pin-selectable magnitudes of 0%, ±1%, ±2%, or ±4%. This dithering reduces electromagnetic interference peaks while maintaining tight frequency centering.
Is DS1091LUA-030/V+T qualified for automotive applications?
Yes, DS1091LUA-030/V+T is fully automotive-qualified: the "/V" suffix denotes AEC-Q200 stress testing compliance, and it operates across -40°C to +125°C with guaranteed electrical specifications over that full range. Its µMAX package, RoHS-compliant "+" marking, and tape-and-reel "T" packaging further align with automotive manufacturing requirements.
How is dither rate selected on DS1091LUA-030/V+T?
Dither rate on DS1091LUA-030/V+T is selected using the DR pin: DR = logic high yields fDITHER = fOUT/22 ≈ 1.36MHz for 30.0MHz output; DR = logic low yields fOUT/24 ≈ 1.25MHz. This relationship is defined by the n-value (n = 11) from Table 2 in the datasheet, which applies specifically to 30.0MHz operation.
What are the supply voltage and current requirements for DS1091LUA-030/V+T?
DS1091LUA-030/V+T operates from 3.0V to 3.6V DC and draws 16mA typical supply current (ICC) under active conditions (CL = 15pF, VCC = 3.6V, TA = +25°C, no dither). It tolerates transient supply excursions from -0.5V to +6.0V on VCC, supporting robust operation in automotive power environments with load dump transients.
Can DS1091LUA-030/V+T be used without spread-spectrum enabled?
Yes, DS1091LUA-030/V+T supports zero-dither operation: setting both SEL0 and SEL1 to logic low disables spread-spectrum modulation, delivering a clean 30.0MHz CMOS clock. This mode maintains all other specifications-including ±0.25% room-temperature accuracy and full automotive temperature range operation-making it suitable for applications where deterministic jitter is critical.
DS1091LUA-030/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:
- Obsolete
- 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:
- 30MHz
- 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-030/V+T FAQ
1.How can I place an order for DS1091LUA-030/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1091LUA-030/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-030/V+T reliable?
The price and inventory of DS1091LUA-030/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-030/V+T is usually 5 days.
3.What payment methods are accepted for DS1091LUA-030/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1091LUA-030/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1091LUA-030/V+T?
DS1091LUA-030/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1091LUA-030/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-030/V+T?
For technical support, including DS1091LUA-030/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1091LUA-030/V+T requirements.
6.How does Aetrix verify that DS1091LUA-030/V+T is sourced from the original manufacturer or authorized distributors?
All DS1091LUA-030/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-030/V+T meets industry standards.
7.What is the process for return or replacement of DS1091LUA-030/V+T?
All DS1091LUA-030/V+T units undergo pre-shipment inspection (PSI). If there is an issue with DS1091LUA-030/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-030/V+T part is unused and in its original packaging.
Return procedure for DS1091LUA-030/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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