Analog Devices Inc./Maxim Integrated MAX1062AEUB

Overview

The MAX1062AEUB from Maxim Integrated is a 14-bit, single-supply +5V successive-approximation analog-to-digital converter (SAR ADC) with 200ksps maximum sampling rate, ±1 LSB INL accuracy, 4MHz input bandwidth, and 10µA shutdown current. It features SPI/QSPI/MICROWIRE-compatible serial interface, internal track-and-hold, and operates across –40°C to +85°C for industrial data acquisition and motor control systems.

For engineers reviewing the MAX1062AEUB datasheet, MAX1062AEUB pinout, MAX1062AEUB application, or MAX1062AEUB equivalent, this page delivers verified electrical specs, thermal range validation, µMAX package mapping, real-world timing constraints (e.g., 1.1µs acquisition time), and alternative selection guidance grounded in manufacturer-specified performance boundaries.

Technical Context

The MAX1062AEUB implements a capacitive DAC-based SAR architecture with internal track-and-hold, enabling precise sampling of signals up to 4MHz bandwidth. Its conversion sequence is initiated by CS falling edge and driven by SCLK, requiring exactly 24 clock cycles per 14-bit result plus two sub-bits (S1/S0), with MSB-first unipolar output format.

Power management uses AutoShutdown™: CS high forces shutdown (≤10µA total supply current), while CS low enables normal operation with dynamic current scaling-2.75mA at 200ksps, 140µA at 10ksps. Analog and digital supplies are independent (AVDD = 4.75–5.25V, DVDD = 2.7–5.25V), supporting direct interfacing with mixed-voltage logic.

Key Specifications

Pinout & Package

MAX1062AEUB is housed in a 10-pin µMAX® package (3mm × 3mm, 0.5mm pitch), thermally enhanced with exposed pad. Pin 3 and Pin 9 are both AGND and must be connected together at a star ground point.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 14-bit SAR ADC applications.

Compared with ADS8325IDGSR and AD7940BRMZ, the MAX1062AEUB uniquely balances 200ksps throughput, ±1 LSB INL, dual-supply flexibility, and multi-standard serial compatibility-making it optimal for industrial +5V systems requiring both speed and precision without voltage translation.

Availability

MAX1062AEUB is available at Aetrix Electronics and suitable for motor control, industrial I/O modules, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX1062AEUB 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 industrial, automotive, and communications markets.

The MAX1062AEUB belongs to Maxim's high-performance SAR ADC product line, engineered for applications demanding low power, wide temperature operation, and seamless microcontroller integration via industry-standard serial interfaces.

FAQ

What is the operating temperature range of the MAX1062AEUB?

The MAX1062AEUB is rated for –40°C to +85°C operation, validated per manufacturer specifications across all key parameters including INL, DNL, and supply current. This extended range distinguishes it from the ACUB variant (0°C to +70°C) and confirms suitability for industrial enclosures, outdoor instrumentation, and automotive under-hood auxiliary sensing where ambient extremes occur. The MAX1062AEUB maintains ±1 LSB INL across this full span.

How does the MAX1062AEUB achieve 10µA shutdown current?

The MAX1062AEUB achieves ≤10µA shutdown current by driving the CS pin high, which disables internal bias circuits, places DOUT in high-impedance state, and powers down the SAR core and track-and-hold amplifier. This behavior is confirmed in the Electrical Characteristics table under "Shutdown Supply Current" (0.1µA typical, 10µA max) with CS = DVDD and SCLK idle. The MAX1062AEUB's AutoShutdown™ feature requires no external circuitry or firmware overhead to enter or exit this ultra-low-power state.

Can the MAX1062AEUB interface directly with a 3.3V microcontroller?

Yes, the MAX1062AEUB can interface directly with a 3.3V microcontroller because its DVDD pin accepts 2.7V to 5.25V, and its digital inputs (CS, SCLK) have VIH = 0.7 × DVDD and VIL = 0.3 × DVDD-so at DVDD = 3.3V, VIH = 2.31V and VIL = 0.99V, compatible with standard 3.3V logic thresholds. Its DOUT output also drives to VOH ≥ DVDD – 0.25V and VOL ≤ 0.4V, ensuring clean level translation. The MAX1062AEUB thus eliminates need for level shifters in mixed-voltage systems.

What is the minimum acquisition time required before conversion starts?

The MAX1062AEUB requires a guaranteed minimum acquisition time of 1.1µs, defined as the interval from CS falling edge until the internal track-and-hold switches open to begin conversion. This value is specified in the Timing Characteristics table and is independent of SCLK frequency. If the analog source impedance exceeds 1kΩ, the actual acquisition time increases per tACQ = 11(RS + 800Ω) × 35pF, so designers must verify settling for high-Z sources. The MAX1062AEUB's 1.1µs baseline enables tight inter-conversion timing in high-speed control loops.

Does the MAX1062AEUB require an external reference voltage?

Yes, the MAX1062AEUB requires an external reference voltage applied to the REF pin, with a valid range of 3.8V to AVDD (i.e., up to +5.25V). The device does not include an internal reference. Manufacturer guidelines specify that the REF source must deliver 100µA DC load current with ≤10Ω output impedance during conversion, and must be bypassed to AGND with a 4.7µF capacitor. Using an inadequate reference degrades the MAX1062AEUB's DC accuracy and noise performance-particularly its ±1 LSB INL and 84dB SINAD.