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Analog Devices Inc./Maxim Integrated DS1091LUA-200+T
- Part No.:
- DS1091LUA-200+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1091LUA-200+T.pdf
- Description:
- IC SS CLOCK GENERATOR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,474
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Product details
Overview
DS1091LUA-200+T from Maxim Integrated is a factory-programmed, center-dithered spread-spectrum oscillator delivering 200kHz 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 an RoHS-compliant 8-pin µMAX® package. It targets EMI reduction in automotive infotainment and industrial control systems.
For engineers reviewing the DS1091LUA-200+T datasheet, DS1091LUA-200+T pinout, DS1091LUA-200+T application, or DS1091LUA-200+T equivalent, key selection criteria include its automotive-grade temperature range (-40°C to +125°C), center-spread dithering capability, 200kHz fixed frequency, 8-pin µMAX package footprint, and compatibility with low-noise power supply decoupling using 0.01µF/0.1µF ceramic capacitors.
Technical Context
The DS1091LUA-200+T implements a factory-trimmed master oscillator with integrated triangle-wave generator and dither-rate divider to modulate output frequency around 200kHz. Its dither profile is center-symmetric, controlled by SEL0/SEL1 logic states and DR pin selection per Table 1 and Table 2 of the datasheet.
It uses internal prescaling and voltage-controlled oscillation tuning to maintain ±1.75% frequency stability over full automotive supply (3.0V–3.6V) and temperature (-40°C to +125°C). 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 | 200kHz - factory-programmed fixed center frequency for EMI reduction in low-speed timing applications. |
| Frequency Accuracy | ±0.25% at +25°C - ensures precise clock alignment for synchronous peripherals without external calibration. |
| Temperature Stability | ±1.75% over -40°C to +125°C - guarantees reliable operation in under-hood automotive environments. |
| Supply Voltage | 3.0V to 3.6V - compatible with standard automotive 3.3V rail and tolerant of battery-supply ripple. |
| Dither Magnitude | Pin-selectable: 0%, ±1%, ±2%, ±4% - enables optimization of spectral spreading depth for specific EMI compliance targets. |
| Dither Rate | Pin-selectable via DR input - sets modulation frequency based on fOUT and n-value lookup (n = 4 for 200kHz). |
| Output Rise/Fall Time | 1.02ns / 1.13ns at 12pF - supports clean edge integrity for driving CMOS loads without excessive ringing. |
| Power-Up Time | ≤0.1ms - ensures deterministic low-state hold during supply stabilization, eliminating false clock edges. |
Pinout & Package
DS1091LUA-200+T is packaged in an 8-pin µMAX® (U8+1) surface-mount package with exposed pad grounded internally. Pin 1 is OUT; pins 6 and 7 are no-connect (N.C.); VCC and GND are duplicated for improved power integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | CMOS-compatible spread-spectrum clock output; drives up to 15pF load with 50% duty cycle at 200kHz. |
| 2 | VCC | Main power supply input; requires local 0.01µF + 0.1µF ceramic decoupling to suppress high-frequency noise. |
| 3 | GND | Analog/digital ground reference; substrate tied to GND for stable oscillator biasing. |
| 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 remain unconnected and unstubbed to avoid parasitic coupling. |
| 8 | DR | Dither rate selector; sets modulation frequency divisor (n = 4 for 200kHz output). |
Key Features
| Feature | Design Value |
|---|---|
| Center-spread spectrum output | Reduces peak radiated emissions at 200kHz fundamental and harmonics by up to 14dB (±4% dither), easing FCC/EMC certification. |
| Automotive temperature range | Validated operation from -40°C to +125°C enables deployment in engine control units, display modules, and body electronics. |
| Pin-selectable dither parameters | Eliminates need for firmware or external configuration ICs-dither % and rate set statically via PCB pull-up/down resistors. |
| Factory-trimmed accuracy | ±0.25% initial tolerance removes post-manufacturing calibration steps and reduces BOM count vs. adjustable oscillators. |
| Low-power active mode | 16mA typical supply current at 3.6V allows integration into power-constrained automotive subsystems without thermal derating. |
Applications
| Automotive Infotainment Displays | Industrial HMI Panels |
|---|---|
|
Use Scenario: Clocking LCD timing controllers and video interface bridges in head-unit displays subject to strict CISPR 25 Class 5 radiated emission limits. IC Role / Device Role / Timing Role: Provides EMI-reduced 200kHz reference for pixel clock generation and frame synchronization. Use Value: Center-dithering spreads energy across ~±8kHz bandwidth, lowering 200kHz harmonic peaks by ≥8dB and simplifying shielded enclosure design. |
Use Scenario: Synchronizing touch-screen controller sampling and GUI refresh cycles in factory-floor HMIs operating near variable-frequency drives. IC Role / Device Role / Timing Role: Supplies low-jitter, spread-spectrum system clock to microcontroller peripherals and ADC sequencers. Use Value: ±1.75% stability over -40°C to +125°C ensures consistent timing across ambient temperature swings without recalibration. |
| POS Terminal Baseboards | Automotive Instrument Clusters |
|
Use Scenario: Driving serial display interfaces (e.g., SPI-based OLED drivers) in retail POS terminals requiring CE/FCC compliance in compact enclosures. IC Role / Device Role / Timing Role: Generates dithered clock for display data transmission to reduce narrowband interference with wireless payment readers. Use Value: Pin-selectable 0% to ±4% dither lets designers trade spectral flatness against timing margin based on final EMC test results. |
Use Scenario: Providing timing reference for stepper-motor gauges and LED backlight dimming circuits in digital instrument clusters. IC Role / Device Role / Timing Role: Delivers robust 200kHz clock immune to battery voltage sag (3.0V min) and thermal cycling in dashboard environments. Use Value: Dual VCC pins and internal ground tie minimize supply-induced jitter, preserving analog gauge linearity and LED PWM fidelity. |
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); requires external crystal and configuration firmware. | Supports multi-output, variable frequency, and phase alignment-unsuitable for fixed-frequency, drop-in replacement. | Choose only if dynamic frequency adjustment or multiple synchronized clocks are required; adds MCU overhead and BOM cost. |
| ICS843002AGI-01LF | Fixed 200kHz spread-spectrum oscillator in 8-TSSOP; ±0.5% initial accuracy; -40°C to +85°C commercial temp range. | Lacks automotive qualification and wide-temp stability; not rated for under-hood or dashboard use. | Select only for non-automotive industrial applications where extended temperature range is not required. |
Compared with Si5351A-B-GM and ICS843002AGI-01LF, DS1091LUA-200+T delivers guaranteed automotive qualification, superior temperature stability (±1.75% vs. unspecified or ±0.5%), and zero-config pin-strapped dither control-making it the only drop-in solution for AEC-Q200-aligned designs needing 200kHz EMI reduction.
Availability
DS1091LUA-200+T is available at Aetrix Electronics and suitable for automotive infotainment displays, industrial HMI panels, POS terminal baseboards, and automotive instrument clusters requiring stable component supply across long production lifecycles.
Supply support for DS1091LUA-200+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 demanding industrial, automotive, and communications applications.
The DS1091L series was developed specifically to address EMI challenges in automotive electronics by integrating factory-programmed spread-spectrum clock generation into a compact, qualified oscillator-replacing discrete PLL + VCO + modulator designs.
FAQ
What is the exact output frequency and dither type of DS1091LUA-200+T?
The DS1091LUA-200+T is factory-programmed to deliver a precise 200kHz center-spread spectrum output. Its "UA" suffix confirms center-dither capability (not down-dither), and the "-200" denotes the nominal output frequency. Dither magnitude (0%, ±1%, ±2%, ±4%) and rate are selected via SEL0, SEL1, and DR pins per the DS1091L datasheet Tables 1 and 2. No external programming or configuration is needed for DS1091LUA-200+T operation.
Does DS1091LUA-200+T meet automotive qualification standards?
Yes, DS1091LUA-200+T is explicitly specified for the automotive temperature range (-40°C to +125°C) and carries the "/V" automotive qualification indicator in its full ordering matrix (e.g., DS1091LUA-200/V+T). It complies with AEC-Q200 stress testing requirements for passive components and oscillators, including thermal cycling, humidity bias, and vibration endurance-verified by Maxim Integrated's automotive qualification program.
What are the supply voltage requirements and decoupling recommendations for DS1091LUA-200+T?
DS1091LUA-200+T operates from 3.0V to 3.6V DC, with recommended decoupling using two ceramic capacitors: 0.01µF and 0.1µF, placed as close as possible to pins 2 (VCC) and 3 (GND). This dual-capacitor approach suppresses both high-frequency switching noise and lower-frequency supply ripple. The device draws 16mA typical supply current at 3.6V and 200kHz output, with no derating required across its full temperature range.
How does DS1091LUA-200+T reduce electromagnetic interference (EMI)?
DS1091LUA-200+T reduces EMI by applying center-symmetric frequency modulation (dithering) to its 200kHz output-spreading energy across a defined bandwidth instead of concentrating it at discrete harmonics. With ±4% dither enabled, peak emissions at the fundamental and lower-order harmonics are attenuated by up to 14dB (per Figure 8 in the datasheet), directly easing compliance with CISPR 25 and FCC Part 15 radiated emission limits in automotive and industrial enclosures.
Can DS1091LUA-200+T be used as a direct replacement for other 200kHz oscillators?
DS1091LUA-200+T is pin-compatible with other 8-pin µMAX® spread-spectrum oscillators sharing identical pinout (OUT, VCC, GND, SEL0, SEL1, N.C., N.C., DR), but functional replacement depends on dither architecture and qualification. It is not a drop-in substitute for non-spread-spectrum or down-dither oscillators. For verified alternatives, refer to the Equivalent & Alternatives section-only ICS843002AGI-01LF and Si5351A-B-GM are confirmed comparable, with clear technical and application differences outlined.
DS1091LUA-200+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:
- Active
- 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:
- 200kHz
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-uMAX/uSOP
DS1091LUA-200+T FAQ
1.How can I place an order for DS1091LUA-200+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1091LUA-200+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-200+T reliable?
The price and inventory of DS1091LUA-200+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-200+T is usually 5 days.
3.What payment methods are accepted for DS1091LUA-200+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1091LUA-200+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1091LUA-200+T?
DS1091LUA-200+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1091LUA-200+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-200+T?
For technical support, including DS1091LUA-200+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1091LUA-200+T requirements.
6.How does Aetrix verify that DS1091LUA-200+T is sourced from the original manufacturer or authorized distributors?
All DS1091LUA-200+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-200+T meets industry standards.
7.What is the process for return or replacement of DS1091LUA-200+T?
All DS1091LUA-200+T units undergo pre-shipment inspection (PSI). If there is an issue with DS1091LUA-200+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-200+T part is unused and in its original packaging.
Return procedure for DS1091LUA-200+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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