Analog Devices Inc./Maxim Integrated MAX11059ECB+

Overview

The MAX11059ECB+ from Maxim Integrated is a high-precision 14-bit, 8-channel simultaneous-sampling analog-to-digital converter (ADC) 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 voltage/current acquisition.

For engineers reviewing the MAX11059ECB+ datasheet, MAX11059ECB+ pinout, MAX11059ECB+ application, or MAX11059ECB+ equivalent, this page delivers verified specifications, package mapping, functional pin roles, real-world use cases, and validated alternative parts - all grounded in Maxim's official documentation for the exact TQFP-64 variant.

Technical Context

The MAX11059ECB+ implements eight independent SAR ADCs with dedicated track-and-hold circuits, enabling true simultaneous sampling across all channels without inter-channel skew. Its 100ps channel-to-channel T/H matching and 10ns aperture delay ensure precise phase-coherent waveform capture for multi-sensor applications.

It features a 20MHz bidirectional parallel interface (DB0–DB15), internal clocking, and flexible reference support - either the low-drift 4.096V internal reference (±4ppm/°C) or an external 3.0V–4.25V source. Digital supply independence (2.7V–5.25V) eliminates level-shifting needs when interfacing with modern microcontrollers.

Key Specifications

Pinout & Package

MAX11059ECB+ is housed in a 64-pin TQFP (10mm × 10mm) with exposed pad (EP), rated for -40°C to +85°C operation. The package supports robust thermal dissipation and standard PCB assembly processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8688IPW and AD7606BSTZ, the MAX11059ECB+ offers superior channel-to-channel timing alignment (100ps vs. ≥500ps), optimized 0–5V unipolar range for power electronics, and tighter reference drift (±4ppm/°C), making it preferred for time-critical, high-accuracy energy metering and motor control.

Availability

MAX11059ECB+ is available at Aetrix Electronics and suitable for power-grid protection, multiphase motor control, and automatic test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX11059ECB+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The MAX11047–MAX11059 family was designed specifically for high-fidelity, synchronized multi-channel data acquisition in power quality monitoring, motor control, and test instrumentation - emphasizing timing precision, reference stability, and rugged input protection.

FAQ

What is the maximum sampling rate per channel for the MAX11059ECB+?

The MAX11059ECB+ achieves 250ksps (kilo-samples per second) per channel with simultaneous sampling across all eight inputs. This rate is sustained continuously under full-load conditions with internal reference and 5V analog supply, as confirmed in the Electrical Characteristics table (tCON = 3µs, fSAMPLE = 250ksps).

Does the MAX11059ECB+ include an internal voltage reference?

Yes, the MAX11059ECB+ integrates a precision 4.096V internal reference with ±4ppm/°C temperature coefficient and ±0.004V initial accuracy. It is accessible at the REFIO pin and requires only a 0.1µF capacitor to AGND for stabilization - eliminating the need for external reference components in most applications.

Can the MAX11059ECB+ operate with a 3.3V digital supply?

Yes, the MAX11059ECB+ supports digital supply voltages from 2.7V to 5.25V, including standard 3.3V logic levels. Its DB0–DB15, RD, WR, and CS pins are fully compatible with 3.3V CMOS interfaces, and the device draws only 7mA typical digital supply current at 3.3V - enabling direct connection to FPGAs and microcontrollers without level shifters.

What is the purpose of the RDC and RDC_SENSE pins on the MAX11059ECB+?

RDC is the reference buffer decoupling terminal, requiring ≥80µF total capacitance to AGND to stabilize the internal reference regulator. RDC_SENSE is the feedback sense point for the reference buffer - it must be connected to the same low-impedance RDC plane to maintain reference accuracy under dynamic load, as specified in Maxim's Layout, Grounding, and Bypassing guidelines.

How does the MAX11059ECB+ handle overvoltage on analog inputs?

The MAX11059ECB+ provides ±20mA internal input clamps on each CH0–CH7 pin, protecting against transients up to ±7.5V relative to AGND. When used with a simple external series resistor (e.g., 100Ω), this clamp structure limits input current and prevents damage during overrange events - a key feature for rugged deployment in industrial power systems.