Analog Devices Inc./Maxim Integrated MAX1062AEUB+

Overview

The MAX1062AEUB+ from Maxim Integrated is a 14-bit successive-approximation analog-to-digital converter (ADC) with ±1 LSB INL, 200ksps maximum sampling rate, and 10µA shutdown current. It operates from a single +5V analog supply and supports 2.7V–5.25V digital logic, enabling direct interfacing with low-voltage microcontrollers in portable data-acquisition systems.

For engineers reviewing the MAX1062AEUB+ datasheet, MAX1062AEUB+ pinout, MAX1062AEUB+ application, or MAX1062AEUB+ equivalent, this page delivers verified electrical specs, thermal range validation (-40°C to +85°C), SPI/QSPI/MICROWIRE timing compliance, and real-world interface design guidance for battery-powered industrial I/O and thermocouple measurement circuits.

Technical Context

The MAX1062AEUB+ integrates an internal track-and-hold with 4MHz small-signal bandwidth and a capacitive DAC architecture optimized for unipolar 0–VREF input ranges. Its conversion sequence is initiated by CS falling edge and driven by SCLK, delivering 14-bit MSB-first serial output preceded by eight leading zeros and followed by two sub-bits (S1, S0).

Power management is implemented via CS-controlled AutoShutdown™: pulling CS high reduces total supply current to 0.1µA (typ), while CS low enables full operation with 2.75mA (AVDD = DVDD = 5V, 200ksps). Acquisition time is fixed at 1.1µs, independent of external source impedance below 1kΩ.

Key Specifications

Pinout & Package

Package: 10-pin µMAX® (3mm × 3mm, 0.5mm pitch), exposed pad for thermal performance. Pin 3 and Pin 9 are both AGND and must be connected together at 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 ADS8860IDRCT and AD7940BRMZ, the MAX1062AEUB+ uniquely combines 200ksps throughput, ±1 LSB INL, integrated 4MHz T/H, and 0.1µA shutdown in a 10-pin µMAX package - making it optimal for space-constrained, battery-aware industrial data loggers requiring fast wake-up and precise analog capture.

Availability

MAX1062AEUB+ is available at Aetrix Electronics and suitable for industrial process control, portable test equipment, and thermocouple measurement systems 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 and mixed-signal ICs for industrial, medical, and communications applications.

The MAX1062AEUB+ belongs to Maxim's low-power, high-accuracy SAR ADC product line, engineered specifically for battery-operated instrumentation and space-constrained industrial I/O where dynamic performance and micropower shutdown must coexist.

FAQ

What is the guaranteed INL specification for MAX1062AEUB+ across its full operating temperature range?

The MAX1062AEUB+ is specified with ±1 LSB integral nonlinearity (INL) over the full -40°C to +85°C temperature range, as confirmed in the Ordering Information table and Electrical Characteristics section of the official datasheet. This grade ('A') ensures consistent linearity performance in industrial environments without recalibration. The MAX1062AEUB+ maintains this specification under AVDD = DVDD = 4.75V–5.25V and fSCLK ≤ 4.8MHz conditions.

Does MAX1062AEUB+ support true 3.3V digital interface operation?

Yes, the MAX1062AEUB+ supports true 3.3V digital interface operation: its DVDD supply accepts 2.7V–5.25V, and digital input thresholds scale with DVDD (VIH = 0.7×DVDD, VIL = 0.3×DVDD). When DVDD = 3.3V, VIH = 2.31V and VIL = 0.99V - fully compatible with standard 3.3V CMOS logic. The MAX1062AEUB+ requires no level-shifting circuitry when interfaced to 3.3V microcontrollers.

How does the MAX1062AEUB+ achieve 0.1µA shutdown current, and what pins control it?

Shutdown current of 0.1µA (typ) in the MAX1062AEUB+ is achieved by driving the CS pin high, which disables internal bias circuits and places DOUT in high-impedance state. This AutoShutdown™ mode is explicitly characterized in the Electrical Characteristics table under "Shutdown Supply Current". No additional control pins or configuration registers are required - the function is hardware-triggered solely by CS logic level.

Can MAX1062AEUB+ interface directly with a PIC16 microcontroller using its SSP module?

Yes, the MAX1062AEUB+ interfaces directly with PIC16 microcontrollers using the SSP module in SPI master mode (CPOL = 0, CPHA = 0). As documented in Application Information section "PIC16 with SSP Module", the MAX1062AEUB+'s timing aligns with PIC16's SSP requirements: DOUT transitions on SCLK falling edge, and data is sampled on rising edge. Three consecutive 8-bit reads recover the full 14-bit result plus sub-bits.

What is the maximum recommended source impedance for the AIN pin of MAX1062AEUB+ to maintain 14-bit accuracy?

The MAX1062AEUB+'s acquisition time (tACQ = 1.1µs) assumes an input source impedance ≤1kΩ, as stated in the Detailed Description: "A source impedance less than 1kΩ does not significantly affect the ADC's performance." For higher impedances, tACQ increases per tACQ = 11(RS + RIN) × 35pF (RIN = 800Ω); exceeding 1kΩ risks incomplete settling and DNL degradation. A buffer amplifier is recommended for RS > 500Ω.