Analog Devices Inc./Maxim Integrated MAX11058ECB+

Overview

The MAX11058ECB+ from Maxim Integrated is a 6-channel, 14-bit simultaneous-sampling analog-to-digital converter with independent track-and-hold per channel, 250ksps throughput per channel, 0–5V input range, and internal 4.096V reference. It operates from 4.75V–5.25V analog and 2.7V–5.25V digital supplies, and is used in multiphase motor control and power-grid protection systems requiring synchronized multi-channel acquisition.

For engineers reviewing the MAX11058ECB+ datasheet, MAX11058ECB+ pinout, MAX11058ECB+ application, or MAX11058ECB+ equivalent, key selection criteria include simultaneous sampling capability, channel-to-channel T/H matching (100ps), parallel 16-bit interface timing, and ±20mA overrange clamp protection for rugged industrial signal conditioning.

Technical Context

This ADC employs SAR architecture with dedicated track-and-hold circuitry per input channel, enabling true simultaneous sampling across all six channels without inter-channel skew. Conversion is clocked internally at up to 20MHz, supporting full 14-bit resolution with no missing codes over –40°C to +85°C.

The device features dual-supply operation: AVDD powers analog circuitry including reference buffer and T/H stages, while DVDD drives the parallel digital interface and configuration logic. Input clamps and high-impedance (>1GΩ) inputs simplify front-end design for sensor and transducer interfacing.

Key Specifications

Pinout & Package

MAX11058ECB+ is housed in a 64-pin TQFP (10mm × 10mm) package with exposed pad (EP), optimized for thermal dissipation and mixed-signal PCB layout separation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar simultaneous-sampling ADC applications.

Compared with ADS8686SIPWR and AD7606C-16BSTZ, the MAX11058ECB+ offers optimal balance of true simultaneity, low-power 14-bit precision, and compact TQFP packaging-making it ideal for cost-sensitive, space-constrained industrial controllers where 6-channel phase alignment is non-negotiable.

Availability

MAX11058ECB+ is available at Aetrix Electronics and suitable for multiphase motor control, power-grid protection, and vibration analysis requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.

Supply support for MAX11058ECB+ 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, automotive, and communications markets, emphasizing high integration and reliability.

The MAX11047–MAX11059 family targets high-fidelity data acquisition in electric power systems and motion control, where simultaneous multi-channel sampling, robust input protection, and deterministic timing are foundational requirements.

FAQ

What is the maximum sampling rate per channel for the MAX11058ECB+?

The MAX11058ECB+ achieves 250ksps per channel with full 14-bit resolution and no missing codes. This rate is sustained across all six channels simultaneously, supported by independent track-and-hold circuitry and internal 20MHz clocking. The 3µs conversion time is guaranteed over the full –40°C to +85°C temperature range and 4.75V–5.25V AVDD supply.

Does the MAX11058ECB+ support external reference voltage, and what is the acceptable range?

Yes, the MAX11058ECB+ supports external reference input via the REFIO pin within 3.0V to 4.25V. When used, this sets the full-scale input range to +3.7V to +5.2V (1.22×V_REF). The internal 4.096V reference remains available as a stable calibration source, and both options are selectable via configuration register bits-no hardware change required.

How does the overrange protection work on the MAX11058ECB+ analog inputs?

Each analog input (CH0–CH5) includes internal ±20mA clamping diodes referenced to AVDD and AGND. With a single external series resistor (e.g., 250Ω), this limits input fault current to safe levels during overvoltage events up to ±7.5V. The clamps activate before internal circuitry is stressed, preserving accuracy and enabling simplified front-end protection without discrete TVS devices.

What is the significance of the RDC and RDC_SENSE pins on the MAX11058ECB+?

RDC is the reference buffer decoupling node requiring ≥80µF total capacitance to AGND for stability; RDC_SENSE provides remote feedback to compensate for IR drop in the reference distribution plane. Together, they maintain <±0.01% reference accuracy under dynamic load-critical for maintaining gain stability across temperature and supply variations in the MAX11058ECB+.

Can the MAX11058ECB+ operate with a 3.3V digital supply while using a 5V analog supply?

Yes, the MAX11058ECB+ fully supports independent DVDD (2.7V–5.25V) and AVDD (4.75V–5.25V) supplies. At DVDD = 3.3V, digital I/O thresholds (VIH = 2.0V, VIL = 0.8V) are compatible with standard 3.3V logic families, and output drive strength (VOH = DVDD–0.4V, VOL = 0.4V) ensures clean signal integrity-eliminating level shifters in mixed-voltage systems.