Analog Devices Inc./Maxim Integrated MAX31180AUA/V+

Overview

MAX31180AUA/V+ from Maxim Integrated is an AEC-Q100 qualified, low-jitter crystal-based clock generator with integrated PLL, generating spread-spectrum clock outputs from 16MHz to 134MHz. It supports pin-selectable 1x/2x/4x multiplication, ±0.5%/±1.0%/±1.5% center-spread dithering, and operates from 3.0V to 3.6V across –40°C to +125°C - used in automotive infotainment timing systems.

For engineers reviewing the MAX31180AUA/V+ datasheet, MAX31180AUA/V+ pinout, MAX31180AUA/V+ application, or MAX31180AUA/V+ equivalent, key selection criteria include AEC-Q100 qualification, µSOP-8 package compatibility, spread-spectrum disable mode, power-down with high-impedance output, and guaranteed cycle-to-cycle jitter ≤75ps at 16MHz.

Technical Context

The MAX31180AUA/V+ implements a PLL-based crystal multiplier architecture with tri-level digital control inputs (CMSEL, SMSEL, PDN) for deterministic configuration without I²C or SPI. Its dither rate is fixed at f_IN/992 to ensure modulation remains above the audio band, and it features internal crystal drive circuitry optimized for parallel-resonant crystals up to 33.4MHz with ESR <90Ω.

Operation requires external load capacitors CL1/CL2 matched to crystal specifications; the device's X1/X2 interface supports either crystal or single-ended clock input, with X2 left open when using external clock. Output SSO drives up to 15pF at frequencies <67MHz and maintains 40–60% duty cycle across temperature and supply voltage.

Key Specifications

Pinout & Package

MAX31180AUA/V+ is housed in an 8-pin µSOP package (package code U8+1, outline 21-0036), RoHS-compliant and qualified per AEC-Q100 Grade 2. The package measures 3.0mm × 3.0mm × 1.0mm with 0.5mm pitch, suitable for space-constrained automotive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5332A-D-GM and ICS843002AGI-01LFT, the MAX31180AUA/V+ uniquely combines AEC-Q100 Grade 2 qualification, tri-level pin programming, and guaranteed low jitter in a compact µSOP-8 - making it the only drop-in solution for automotive infotainment clock trees requiring zero-firmware, single-crystal, dual-frequency generation.

Availability

MAX31180AUA/V+ is available at Aetrix Electronics and suitable for automotive infotainment, cable modem timing, and industrial PC peripheral designs requiring stable component supply, AEC-Q100 compliance, and low-EMI clock generation.

Supply support for MAX31180AUA/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 power management ICs for automotive, industrial, and communications markets.

The MAX31180 product line delivers AEC-Q100 qualified, low-jitter spread-spectrum clock generators targeting EMI reduction in automotive infotainment, ADAS, and telematics systems - eliminating need for external filtering or shielding.

FAQ

What is the AEC-Q100 qualification status of MAX31180AUA/V+?

The MAX31180AUA/V+ is explicitly qualified to AEC-Q100 Grade 2 (–40°C to +105°C ambient, +125°C junction), with full stress testing including HTOL, TCT, and ESD. This qualification applies only to the /V+ suffix variant - standard MAX31180AUA+ is not AEC-Q100 qualified. MAX31180AUA/V+ is intended for automotive applications where reliability under thermal and vibration stress is mandatory.

How does the MAX31180AUA/V+ achieve EMI reduction?

The MAX31180AUA/V+ uses center-spread spectrum modulation at a fixed dither rate of f_IN/992, shifting output energy across a defined bandwidth. Users select ±0.5%, ±1.0%, or ±1.5% dither magnitude via the SMSEL pin. This spreads spectral peaks, reducing radiated emissions by up to 15dB - verified in MAX31180AUA/V+ EMC test reports for automotive infotainment boards.

Can MAX31180AUA/V+ operate with an external clock instead of a crystal?

Yes. The MAX31180AUA/V+ accepts a single-ended 16MHz to 33.4MHz clock directly at the X1 pin; in this configuration, X2 must be left open. The device retains full functionality - including spread-spectrum modulation, multiplier selection, and power-down - regardless of whether crystal or clock input is used. Input logic thresholds comply with standard CMOS levels (VIH ≥ 0.8×VCC).

What is the maximum capacitive load supported by the SSO output of MAX31180AUA/V+?

The SSO output of MAX31180AUA/V+ supports up to 15pF at frequencies below 67MHz, 10pF from 67MHz to 101MHz, and 7pF from 101MHz to 134MHz. These values are specified in the DC Electrical Characteristics table and verified across temperature and voltage. Exceeding these loads may degrade rise/fall times and increase jitter beyond the guaranteed 75ps specification.

Does MAX31180AUA/V+ require external load capacitors when using a crystal?

Yes. When using a crystal, two external load capacitors CL1 and CL2 must be placed between X1/GND and X2/GND respectively. Their values are calculated using CLX = CL − C_IN/2, where CL is the crystal's specified parallel load capacitance (typically 18pF) and C_IN = 5pF (input capacitance). For a standard 18pF crystal, CL1 = CL2 ≈ 15.5pF - commonly implemented as 15pF or 16pF NP0 ceramics.