Analog Devices Inc./Maxim Integrated MAX31091AUA/V+200

Overview

MAX31091AUA/V+200 from Maxim Integrated is an AEC-Q100-qualified spread-spectrum clock oscillator factory-programmed to 200kHz, operating from -40°C to +125°C on 3.0V–3.6V supply, with ±0.25% initial accuracy and center-dithered output for EMI reduction in automotive ECUs.

For engineers reviewing the MAX31091AUA/V+200 datasheet, MAX31091AUA/V+200 pinout, MAX31091AUA/V+200 application, or MAX31091AUA/V+200 equivalent, key selection criteria include dither magnitude selectability (0%/±1%/±2%/±4%), DR-pin configurable dither rate, 8-pin µMAX package compatibility, and automotive-grade thermal stability across full temperature range.

Technical Context

The MAX31091AUA/V+200 implements a factory-trimmed master oscillator with integrated triangle-wave generator to inject center-spread modulation. Dither magnitude is selected via SEL0/SEL1 logic states, enabling precise control over spectral energy distribution without external components.

Dither rate scales with output frequency and DR pin state per defined n-values in Table 2 - for 200kHz fOUT, DR = 0 yields ~12.5Hz dither rate and DR = 1 yields ~15.6Hz. Power-up hold-low behavior ensures glitch-free initialization with tPU ≤ 0.1ms.

Key Specifications

Pinout & Package

MAX31091AUA/V+200 is housed in an 8-pin µMAX® package (U8+4 outline, land pattern 90-0092), RoHS-compliant and lead(Pb)-free, with exposed pad not connected internally.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar spread-spectrum oscillator applications.

Compared with Si5351A-B-GM and ICS843002AGI-01LFT, the MAX31091AUA/V+200 uniquely combines factory-set 200kHz output, AEC-Q100 qualification, pin-selectable center-spread dither, and automotive temperature operation - making it the only drop-in solution for EMI-sensitive automotive timing nodes requiring zero configuration.

Availability

MAX31091AUA/V+200 is available at Aetrix Electronics and suitable for Engine Control Units, ADAS camera modules, automotive instrument clusters, and infotainment systems requiring stable component supply with automotive-grade reliability and EMI compliance.

Supply support for MAX31091AUA/V+200 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 targeting EMI reduction in automotive timing-critical subsystems such as ECUs, ADAS, and infotainment platforms.

FAQ

What is the factory-programmed output frequency of the MAX31091AUA/V+200?

The MAX31091AUA/V+200 is factory-programmed to a precise 200kHz center frequency. This value is laser-trimmed during manufacturing and cannot be altered in the field. The device maintains this frequency across its full operating temperature range (-40°C to +125°C) and supply voltage (3.0V to 3.6V), with initial accuracy of ±0.25% at +25°C. No external components or configuration are needed to achieve this output.

Is the MAX31091AUA/V+200 AEC-Q100 qualified?

Yes, the MAX31091AUA/V+200 is fully AEC-Q100 qualified (Grade 0, -40°C to +125°C). This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and electrical robustness - confirming suitability for safety-critical automotive applications including engine control, ADAS, and instrumentation. The "/V" suffix explicitly denotes automotive qualification per Maxim's ordering nomenclature.

How does the spread-spectrum function work on the MAX31091AUA/V+200?

The MAX31091AUA/V+200 uses an internal triangle-wave generator to modulate the master oscillator, producing center-spread output. Dither magnitude (0%, ±1%, ±2%, or ±4%) is selected using SEL0 and SEL1 pins; dither rate is controlled by the DR pin. At 200kHz output, DR = 0 sets dither rate to ~12.5Hz and DR = 1 sets it to ~15.6Hz - both optimized for low-frequency EMI suppression without affecting system timing margins.

What package type and footprint does the MAX31091AUA/V+200 use?

The MAX31091AUA/V+200 uses an 8-pin µMAX® package (package code U8+4, outline 21-0036, land pattern 90-0092). It is RoHS-compliant ("+" suffix), lead(Pb)-free, and features a standard SOIC-like footprint with gull-wing leads. The exposed pad is not connected internally and may be left floating or grounded for mechanical stability - no thermal pad soldering is required.

Can the MAX31091AUA/V+200 operate outside the 3.0V–3.6V supply range?

No - the MAX31091AUA/V+200 is specified only for 3.0V to 3.6V operation. Absolute maximum VCC is +4.0V, but functional operation outside the recommended range is not guaranteed. Supply voltage below 3.0V may cause output instability or failure to start; above 3.6V risks exceeding internal voltage tolerances and degrading long-term reliability. Decoupling with 0.01µF and 0.1µF ceramic capacitors is mandatory for stable operation.