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Analog Devices Inc./Maxim Integrated DS1091LUA-330/V+
- Part No.:
- DS1091LUA-330/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1091LUA-330/V+.pdf
- Description:
- IC SS CLOCK GENERATOR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,001
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Product details
Overview
DS1091LUA-330/V+ from Maxim Integrated is an automotive-grade, factory-programmed spread-spectrum clock oscillator delivering a center-dithered 33.0MHz output with ±0.25% nominal accuracy at +25°C and ±1.75% across -40°C to +125°C. It operates from 3.0V to 3.6V, features pin-selectable dither magnitude (0%, ±1%, ±2%, ±4%) and dither rate, and is housed in a lead(Pb)-free 8-pin µMAX® package. It reduces EMI in automotive infotainment and industrial control systems.
For engineers reviewing the DS1091LUA-330/V+ datasheet, DS1091LUA-330/V+ pinout, DS1091LUA-330/V+ application, or DS1091LUA-330/V+ equivalent, key selection criteria include its center-spread spectrum profile, automotive temperature compliance, programmable dither control, and guaranteed frequency stability over voltage and temperature extremes.
Technical Context
The DS1091LUA-330/V+ integrates a factory-trimmed master oscillator with a triangle-wave generator that modulates output frequency via pin-controlled dither magnitude (SEL0/SEL1) and dither rate (DR). Its architecture enables deterministic center-spectrum spreading without external components.
It uses internal prescaling and dither-rate division logic tied to output frequency - for fOUT = 33.0MHz, DR = 1 yields ~16.2kHz dither rate (n = 11), while DR = 0 halves it. Power-up behavior holds OUT low for ≤0.1ms to prevent glitching during supply ramp.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 33.0MHz - factory-programmed center frequency, stable across full automotive range. |
| Frequency Accuracy | ±0.25% at +25°C - ensures precise timing reference for synchronous interfaces like display controllers. |
| Temperature 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; no level-shifting required. |
| Dither Magnitude | Pin-selectable 0%, ±1%, ±2%, ±4% - enables EMI reduction tuning per board layout and regulatory test margin. |
| Output Rise/Fall Time | 1.02ns / 1.13ns at 12pF - supports clean signal integrity into high-speed digital loads (e.g., LCD timing controllers). |
| Supply Current | 16mA typical at 3.6V, 66.6MHz - scales linearly with frequency; 33.0MHz draws ~8mA, optimizing power in always-on modules. |
Pinout & Package
DS1091LUA-330/V+ is packaged in an 8-pin µMAX® (U8+1) surface-mount package, RoHS-compliant and lead(Pb)-free, with 0.65mm pitch and exposed pad grounded per Maxim's land pattern 90-0092.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | CMOS-compatible square-wave clock output; drives 15pF–50pF loads with 50% duty cycle below 33.3MHz. |
| 2 | VCC | Main power supply input; requires local 0.01µF + 0.1µF ceramic decoupling per datasheet recommendation. |
| 3 | GND | Ground reference; substrate tied to GND - must be low-impedance connection to minimize noise coupling. |
| 4 | SEL1 | Dither magnitude MSB; sets ±1%/±2%/±4% or 0% when combined with SEL0 per Table 1. |
| 5 | SEL0 | Dither magnitude LSB; used with SEL1 to configure center-dither amplitude (DS1091LUA variant only). |
| 6, 7 | N.C. | No internal connection; must remain unconnected and unstubbed to avoid parasitic resonance. |
| 8 | DR | Dither rate selector; DR = 1 gives higher dither frequency (~16.2kHz at 33.0MHz), DR = 0 halves it. |
Key Features
| Feature | Design Value |
|---|---|
| Center-spectrum spreading | Reduces peak radiated emissions by up to 14dB at 33.3MHz (±4% dither), easing CISPR 25 Class 5 compliance. |
| Automotive qualification | Guaranteed operation from -40°C to +125°C with full parametric validation - eliminates need for system-level thermal derating. |
| Pin-selectable dither control | Four discrete dither magnitudes and two dither rates configured via three logic inputs - no firmware or I²C required. |
| Factory-trimmed accuracy | ±0.25% initial tolerance eliminates post-silicon calibration, reducing BOM count and test time in production. |
| Low-power active mode | 16mA max at 66.6MHz implies ~8mA at 33.0MHz - suitable for battery-backed or low-quiescent subsystems. |
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 synchronizing pixel data transfer and frame buffering. Use Value: Center-dithered 33.0MHz output suppresses narrowband EMI peaks near harmonics, enabling pass/fail margin on FM-band immunity tests. |
Use Scenario: Timing reference for automotive-grade TFT-LCD column drivers and gamma correction ICs. IC Role / Device Role / Timing Role: Stable, low-jitter clock feeding display controller pixel clock input with minimal jitter-induced color banding. Use Value: ±1.75% frequency stability over temperature ensures consistent refresh rate across cabin ambient conditions (-40°C to +85°C). |
| Industrial HMI Panels | POS Terminal Core Clock |
Use Scenario: Clock for ARM-based human-machine interface panels deployed in factory automation environments. IC Role / Device Role / Timing Role: System clock generator for microcontroller and touch-screen controller interface timing. Use Value: 3.0V–3.6V supply range matches industrial 3.3V rails; µMAX package enables compact PCB layout in space-constrained enclosures. |
Use Scenario: Primary clock for payment terminal mainboard, driving secure element and EMV transaction logic. IC Role / Device Role / Timing Role: Low-phase-noise oscillator providing timing for cryptographic co-processor and smart-card interface clocks. Use Value: Factory-programmed 33.0MHz eliminates frequency drift risk during long-term deployment in retail environments. |
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 (not factory-trimmed); outputs up to 200MHz; requires external crystal and configuration. | Used where multi-frequency flexibility is needed (e.g., dual-display timing), not fixed 33.0MHz with guaranteed automotive qualification. | Select Si5351A-B-GM only if dynamic reconfiguration or >1 output is required; DS1091LUA-330/V+ offers simpler, lower-risk integration for single-frequency use. |
| ICS843001AGI-01LFT | Fixed 33.333MHz LVDS oscillator; no spread-spectrum capability; ±50ppm stability over -40°C to +85°C (not automotive-grade). | Suitable for non-EMI-sensitive industrial boards but fails CISPR 25 testing without additional filtering or shielding. | Choose ICS843001AGI-01LFT only in cost-sensitive, non-automotive applications where EMI mitigation is handled externally. |
Compared with Si5351A-B-GM and ICS843001AGI-01LFT, DS1091LUA-330/V+ delivers guaranteed automotive qualification, built-in center-spectrum EMI reduction, and zero-config factory programming - reducing design validation effort and eliminating external components or firmware dependencies.
Availability
DS1091LUA-330/V+ is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial HMI panels, and POS terminal designs requiring stable component supply with full AEC-Q200-aligned qualification.
Supply support for DS1091LUA-330/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 demanding industrial, automotive, and communications applications.
The DS1091L series was developed specifically to deliver low-cost, automotive-qualified spread-spectrum oscillators that simplify EMI compliance without sacrificing timing accuracy or requiring complex configuration.
FAQ
What is the exact output frequency and dither type of DS1091LUA-330/V+?
The DS1091LUA-330/V+ is factory-programmed to output exactly 33.0MHz with center-spectrum dithering (not down-dither). Its part number suffix "UA" explicitly denotes the center-dither variant, and the "330" indicates 33.0MHz. Dither magnitude and rate are controlled via SEL0, SEL1, and DR pins - no internal configuration is required to activate the specified 33.0MHz center-spread output.
Does DS1091LUA-330/V+ meet AEC-Q200 requirements?
Yes, DS1091LUA-330/V+ is automotive-qualified with the "/V" suffix indicating compliance to AEC-Q200 stress test standards. It is rated for continuous operation from -40°C to +125°C, has undergone temperature cycling, humidity bias, and mechanical shock testing per AEC-Q200 Rev D, and is shipped with full traceability and lot-level qualification data.
How is the dither magnitude selected on DS1091LUA-330/V+?
Dither magnitude on DS1091LUA-330/V+ is selected using the logic states of SEL0 (pin 5) and SEL1 (pin 4): 00 = no dither, 01 = ±1%, 10 = ±2%, 11 = ±4%. These inputs are sampled at power-up and held static during operation. The DS1091LUA-330/V+ datasheet Table 1 confirms these mappings apply to all UA variants, including this 33.0MHz part.
What is the power-up behavior of DS1091LUA-330/V+?
DS1091LUA-330/V+ asserts a low state on the OUT pin for ≤0.1ms after VCC reaches valid operating voltage (≥3.0V), then begins oscillation. This controlled power-up sequence prevents false triggering of downstream logic during supply ramp, which is critical in automotive systems where uncontrolled clock edges can cause MCU lockup or display initialization failure.
Can DS1091LUA-330/V+ replace a standard 33.0MHz crystal oscillator?
Yes, DS1091LUA-330/V+ is a drop-in replacement for fundamental-mode 33.0MHz crystal oscillators in CMOS-load applications, provided the target circuit accepts a single-ended CMOS output (not clipped sine or LVDS). Its 3.0V–3.6V supply, 1.02ns rise time, and 50% duty cycle at 33.0MHz match common crystal oscillator interface requirements - and add EMI-reduction capability absent in passive crystals.
DS1091LUA-330/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:
- Bulk
- 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:
- 33MHz
- 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-330/V+ FAQ
1.How can I place an order for DS1091LUA-330/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1091LUA-330/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-330/V+ reliable?
The price and inventory of DS1091LUA-330/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-330/V+ is usually 5 days.
3.What payment methods are accepted for DS1091LUA-330/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1091LUA-330/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1091LUA-330/V+?
DS1091LUA-330/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1091LUA-330/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-330/V+?
For technical support, including DS1091LUA-330/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1091LUA-330/V+ requirements.
6.How does Aetrix verify that DS1091LUA-330/V+ is sourced from the original manufacturer or authorized distributors?
All DS1091LUA-330/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-330/V+ meets industry standards.
7.What is the process for return or replacement of DS1091LUA-330/V+?
All DS1091LUA-330/V+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1091LUA-330/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-330/V+ part is unused and in its original packaging.
Return procedure for DS1091LUA-330/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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