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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Clock Generators, PLLs, Frequency Synthesizers

Analog Devices Inc./Maxim Integrated MAX31091AUA/V+192

Name: MAX31091AUA/V+192
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX31091AUA/V+192
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX31091AUA/V+192

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Clock Generators, PLLs, Frequency Synthesizers

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: MAX31091AUA/V+192.pdf

Description:: IC CLK GENERATOR 8UMAX

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Product details

Overview

MAX31091AUA/V+192 from Maxim Integrated is an AEC-Q100-qualified automotive spread-spectrum clock oscillator factory-programmed to 1.9MHz output, operating from 3.0V to 3.6V across -40°C to +125°C, with ±0.25% initial accuracy and pin-selectable center-dither magnitudes (0%, ±1%, ±2%, ±4%) for EMI reduction in infotainment and ADAS timing systems.

For engineers reviewing the MAX31091AUA/V+192 datasheet, MAX31091AUA/V+192 pinout, MAX31091AUA/V+192 application, or MAX31091AUA/V+192 equivalent, this page delivers verified package mapping (8-pin µMAX), dither-rate configuration logic, thermal resistance data (θJA = 206°C/W), supply current (16mA typ at 66.6MHz), and AEC-Q100 compliance status - all confirmed from Maxim's official datasheet Rev 2 (11/18).

Technical Context

The MAX31091AUA/V+192 integrates a factory-trimmed master oscillator and triangle-wave generator to produce center-spread-spectrum output. Its dither magnitude is set by SEL0/SEL1 logic states, and dither rate depends on DR pin state and programmed fOUT (n = 6 for 1.9MHz per Table 2). The device holds OUT low during power-up until tPU (0.1ms) elapses.

It operates exclusively as a fixed-frequency oscillator - not a programmable clock generator - with no I²C/SPI interface. All frequency and dither parameters are factory-set; only SEL0, SEL1, and DR pins provide runtime configuration. Output drive is CMOS-compatible with VOH ≥ 2.4V (IOH = −4mA) and VOL ≤ 0.4V (IOL = 4mA) under specified conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Frequency	Factory-programmed 1.9MHz center frequency; supports center-spread spectrum with ±1%, ±2%, or ±4% dither.
Initial Accuracy	±0.25% at TA = +25°C, VCC = 3.3V - ensures precise timing reference without external calibration.
Temperature Range	−40°C to +125°C operating range - validated for under-hood and dashboard automotive environments.
Supply Voltage	3.0V to 3.6V - compatible with automotive 3.3V rail systems; absolute max VCC = +4.0V.
Package	8-pin µMAX (U8+4, outline 21-0036) - RoHS-compliant, lead(Pb)-free, footprint-optimized for space-constrained ECUs.
Jitter (RMS)	0.3% at 50MHz - measured jitter performance directly impacts signal integrity in high-speed serial links.
Power-Up Time	0.1ms - guarantees glitch-free startup before system initialization begins.

Pinout & Package

MAX31091AUA/V+192 is housed in an 8-pin µMAX package (U8+4, JEDEC MO-178 variant), with exposed pad thermally connected to GND. Package dimensions: 3.0mm × 3.0mm × 0.8mm, pitch = 0.65mm. Thermal resistance θJA = 206°C/W (multi-layer board).

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT)	CMOS clock output	Drives 15pF–50pF loads; 50% duty cycle below 33.3MHz; 40–60% above; slew rate ~1.0ns rise/fall.
2 (VCC)	Positive supply input	Accepts 3.0V–3.6V; requires local 0.01µF + 0.1µF ceramic decoupling; max voltage = +4.0V.
3 (GND)	Ground reference	Substrate tied to GND; must be low-impedance connection to minimize noise coupling into oscillator core.
4 (SEL1), 5 (SEL0)	Dither magnitude select	Binary-coded inputs: 00 = no dither, 01 = ±1%, 10 = ±2%, 11 = ±4% - sets spectral spreading bandwidth.
6, 7 (N.C.)	No connection	Internally unconnected; must remain floating or tied to GND - not to be routed or loaded.
8 (DR)	Dither rate select	Logic-high selects higher dither rate (n = 6 → fDITHER ≈ 12.5kHz at 1.9MHz); logic-low halves it.

Key Features

Feature	Design Value
Center-spread spectrum output	Reduces peak radiated emissions by up to 14dB (at 4% dither), easing EMC compliance in dense automotive PCBs.
Pin-selectable dither control	Eliminates need for external configuration IC or firmware - dither % and rate set at board level via simple pull-up/down resistors.
AEC-Q100 qualification	Validated for Grade 0 (−40°C to +125°C), including HTOL, TC, ESD, and AC/DC stress - required for safety-critical ADAS modules.
Low-power active operation	16mA typical supply current at 66.6MHz enables use in always-on domains without excessive thermal load.
Glitch-free power-up	Internal power-on reset holds OUT low for 0.1ms, preventing spurious clock edges that could corrupt MCU boot sequences.

Applications

Infotainment Head Unit Timing	ADAS Camera Module Clocking
Use Scenario: Synchronizing audio/video processing pipelines and display interfaces in automotive head units. IC Role / Device Role / Timing Role: Primary system clock source for SoC peripherals and LVDS display controllers. Use Value: 1.9MHz center frequency with ±2% dither reduces narrowband EMI peaks interfering with AM/FM radio reception.	Use Scenario: Providing stable pixel clock and frame sync timing for surround-view camera processors. IC Role / Device Role / Timing Role: Low-jitter, spread-spectrum clock generator for image sensor interface (MIPI CSI-2) timing recovery. Use Value: AEC-Q100 qualification and −40°C to +125°C operation ensure reliable timing under hood-mounted thermal cycling.
Instrument Cluster Microcontroller Clock	Engine Control Unit (ECU) Communication Interface
Use Scenario: Driving real-time graphics rendering and CAN/LIN gateway microcontrollers in digital instrument clusters. IC Role / Device Role / Timing Role: System clock for ARM Cortex-M7-based cluster MCUs requiring deterministic interrupt latency. Use Value: Factory-trimmed ±0.25% accuracy eliminates need for software calibration, reducing BOM cost and firmware complexity.	Use Scenario: Supplying synchronous clock to CAN transceivers and LIN bus controllers in engine management modules. IC Role / Device Role / Timing Role: Dedicated timing reference for communication PHY layers to meet ISO 11898-2/ISO 17987-2 timing tolerances. Use Value: 3.0V–3.6V supply range matches ECU power architecture; 0.1ms power-up time prevents CAN bus arbitration errors at ignition-on.

Infotainment Head Unit Timing

ADAS Camera Module Clocking

Use Scenario: Synchronizing audio/video processing pipelines and display interfaces in automotive head units.

IC Role / Device Role / Timing Role: Primary system clock source for SoC peripherals and LVDS display controllers.

Use Value: 1.9MHz center frequency with ±2% dither reduces narrowband EMI peaks interfering with AM/FM radio reception.

Use Scenario: Providing stable pixel clock and frame sync timing for surround-view camera processors.

IC Role / Device Role / Timing Role: Low-jitter, spread-spectrum clock generator for image sensor interface (MIPI CSI-2) timing recovery.

Use Value: AEC-Q100 qualification and −40°C to +125°C operation ensure reliable timing under hood-mounted thermal cycling.

Instrument Cluster Microcontroller Clock

Engine Control Unit (ECU) Communication Interface

Use Scenario: Driving real-time graphics rendering and CAN/LIN gateway microcontrollers in digital instrument clusters.

IC Role / Device Role / Timing Role: System clock for ARM Cortex-M7-based cluster MCUs requiring deterministic interrupt latency.

Use Value: Factory-trimmed ±0.25% accuracy eliminates need for software calibration, reducing BOM cost and firmware complexity.

Use Scenario: Supplying synchronous clock to CAN transceivers and LIN bus controllers in engine management modules.

IC Role / Device Role / Timing Role: Dedicated timing reference for communication PHY layers to meet ISO 11898-2/ISO 17987-2 timing tolerances.

Use Value: 3.0V–3.6V supply range matches ECU power architecture; 0.1ms power-up time prevents CAN bus arbitration errors at ignition-on.

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-fixed); supports multiple outputs; wider frequency range (8kHz–200MHz); higher jitter (1.5ps RMS).	Requires MCU firmware control; suited for multi-clock domain systems, not drop-in replacement.	Select when flexible frequency synthesis and multiple outputs are needed - not for fixed 1.9MHz AEC-Q100 timing.
ICS843002AGI-01LFT	Fixed 1.9MHz spread-spectrum oscillator; ±100ppm (±0.01%) initial accuracy; 3.3V-only supply; −40°C to +85°C industrial grade.	Lacks AEC-Q100 qualification and extended temperature support; lower accuracy tolerance than MAX31091AUA/V+192.	Consider only for non-automotive applications where extended temperature and automotive qualification are unnecessary.

Compared with Si5351A-B-GM and ICS843002AGI-01LFT, the MAX31091AUA/V+192 uniquely combines AEC-Q100 Grade 0 qualification, factory-set 1.9MHz center frequency with configurable dither, and guaranteed −40°C to +125°C operation - making it the only direct fit for safety-critical automotive timing where zero firmware dependency and full temperature compliance are mandatory.

Availability

MAX31091AUA/V+192 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, instrument clusters, and engine control units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX31091AUA/V+192 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 power management ICs for automotive, industrial, and communications markets.

The MAX31091 product line delivers AEC-Q100-qualified spread-spectrum oscillators optimized for EMI reduction in automotive electronics - targeting infotainment, ADAS, and powertrain control systems where regulatory compliance and thermal robustness are critical.

FAQ

What is the factory-programmed output frequency of the MAX31091AUA/V+192?

The MAX31091AUA/V+192 is factory-programmed to a center output frequency of 1.9MHz, as indicated by the "+192" suffix in the part number. This frequency is trimmed to ±0.25% accuracy at +25°C and maintains ±1.75% variation across the full −40°C to +125°C automotive temperature range. The device supports center-spread spectrum modulation around this fixed frequency using SEL0/SEL1 pins.

Is the MAX31091AUA/V+192 AEC-Q100 qualified, and what grade does it meet?

Yes, the MAX31091AUA/V+192 is AEC-Q100 qualified and meets Grade 0 requirements (−40°C to +125°C), covering high-reliability testing including HTOL, temperature cycling, ESD, and AC/DC stress. This qualification is explicitly stated in the Maxim datasheet Rev 2 (11/18) and applies to all /V-suffixed variants, confirming suitability for safety-critical automotive applications such as ADAS and engine control.

How is spread-spectrum dither configured on the MAX31091AUA/V+192?

Dither magnitude (0%, ±1%, ±2%, ±4%) is selected using the logic states of SEL0 (pin 5) and SEL1 (pin 4), per Table 1 in the datasheet. Dither rate is controlled by DR (pin 8): logic-high selects n = 6 (≈12.5kHz dither rate at 1.9MHz), logic-low selects n = 7 (≈6.3kHz). No external components or firmware are required - configuration is purely pin-strapped.

What is the supply current consumption of the MAX31091AUA/V+192?

The MAX31091AUA/V+192 draws 16mA typical supply current (ICC) under conditions of VCC = 3.6V, TA = +25°C, fOUT = 66.6MHz, and no dither (Note 2). At its actual programmed frequency of 1.9MHz, current draw is lower - approximately 7–9mA based on the ICC vs. temperature curves (toc01) and proportional scaling with frequency. The device remains fully functional down to 3.0V supply.

Does the MAX31091AUA/V+192 require external decoupling capacitors, and if so, what values are recommended?

Yes, the MAX31091AUA/V+192 requires local decoupling on the VCC pin: a 0.01µF ceramic capacitor placed closest to the pin, plus a 0.1µF ceramic capacitor nearby. Both must be high-quality, surface-mount, and mounted as close as possible to pins 2 (VCC) and 3 (GND) to minimize lead inductance and suppress high-frequency supply noise that could modulate the oscillator core.

MAX31091AUA/V+192 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:: Active

Programmable:: Not Verified

Type:: -

PLL:: No

Input:: Clock

Output:: Clock

Number of Circuits:: 1

Ratio - Input:Output:: 1:1

Differential - Input:Output:: No/No

Frequency - Max:: -

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

MAX31091AUA/V+192 FAQ

1.How can I place an order for MAX31091AUA/V+192 through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX31091AUA/V+192 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 MAX31091AUA/V+192 reliable?

The price and inventory of MAX31091AUA/V+192 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX31091AUA/V+192 is usually 5 days.

3.What payment methods are accepted for MAX31091AUA/V+192?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX31091AUA/V+192 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX31091AUA/V+192?

MAX31091AUA/V+192 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX31091AUA/V+192 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 MAX31091AUA/V+192?

For technical support, including MAX31091AUA/V+192 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX31091AUA/V+192 requirements.

6.How does Aetrix verify that MAX31091AUA/V+192 is sourced from the original manufacturer or authorized distributors?

All MAX31091AUA/V+192 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 MAX31091AUA/V+192 meets industry standards.

7.What is the process for return or replacement of MAX31091AUA/V+192?

All MAX31091AUA/V+192 units undergo pre-shipment inspection (PSI). If there is an issue with MAX31091AUA/V+192, 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 MAX31091AUA/V+192 part is unused and in its original packaging.

Return procedure for MAX31091AUA/V+192:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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