Analog Devices Inc./Maxim Integrated MAX1060BEEI+

Overview

MAX1060BEEI+ from Maxim Integrated is a low-power, 10-bit successive-approximation ADC with 8-channel single-ended / 4-channel pseudo-differential analog input multiplexing, internal +2.5V reference, and byte-wide parallel (8+2) interface. It operates from a single +5V analog supply with independent +2.7V to +5.5V digital logic supply (VLOGIC), delivers 400ksps max sampling rate, and supports unipolar/bipolar configuration for industrial data-acquisition systems.

For engineers reviewing the MAX1060BEEI+ datasheet, MAX1060BEEI+ pinout, MAX1060BEEI+ application, or MAX1060BEEI+ equivalent, key selection criteria include its -40°C to +85°C extended temperature grade, ±1 LSB INL, software-configurable acquisition modes (internal/external), fast 2µs wake-up from shutdown, and QSOP-28 package compatibility with space-constrained embedded sensor interfaces.

Technical Context

The MAX1060BEEI+ implements a capacitive charge-redistribution SAR architecture with integrated track-and-hold (6MHz full-power bandwidth, 350kHz full-linear bandwidth) and on-chip 10-bit DAC. Its control logic accepts an 8-bit configuration byte defining channel address (A2–A0), unipolar/bipolar mode (UNI/BIP), single-ended/pseudo-differential mode (SGL/DIF), acquisition mode (ACQMOD), and power-down state (PD1/PD0).

Digital interfacing uses active-low CS, WR, RD, and INT signals with HBEN-controlled 10-bit data multiplexing across D7–D0/D9–D8 pins. Clocking supports both internal (fixed ~7.6MHz) and external (100kHz–7.6MHz, 30–70% duty cycle) modes, with timing rigorously defined for conversion start, data valid windows, and interrupt assertion.

Key Specifications

Pinout & Package

MAX1060BEEI+ is housed in a 28-pin QSOP (Quad Small Outline Package) with 0.15mm lead pitch and 7.6mm × 10.2mm body size, optimized for high-density PCB layouts in industrial instrumentation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit parallel-output ADC applications.

Compared with MAX1060ACEI+, the MAX1060BEEI+ trades ±0.5 LSB INL for -40°C to +85°C operation - making it preferable for field-deployed equipment. Against ADS7822U, MAX1060BEEI+ provides 2× resolution, parallel throughput, and integrated reference - at the cost of larger package and higher pin count.

Availability

MAX1060BEEI+ is available at Aetrix Electronics and suitable for industrial process monitoring, portable medical devices, energy meter data logging, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX1060BEEI+ 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 demanding industrial, medical, and communications applications.

The MAX1060BEEI+ belongs to Maxim's low-power, parallel-interface ADC product line engineered for high-accuracy data acquisition in space- and power-constrained embedded systems with wide operating temperature requirements.

FAQ

What is the operating temperature range of the MAX1060BEEI+?

The MAX1060BEEI+ is rated for -40°C to +85°C operation, confirmed in the Ordering Information table and Absolute Maximum Ratings section of the datasheet. This extended industrial temperature grade distinguishes it from the 0°C to +70°C MAX1060ACEI+ variant and ensures reliable performance in harsh environments such as factory floors or outdoor metering enclosures where the MAX1060BEEI+ is deployed.

Does the MAX1060BEEI+ require an external clock to operate?

No, the MAX1060BEEI+ supports both internal and external clock modes. When configured for internal clock mode (D7=1, D6=0 in control byte), it generates its own ~7.6MHz conversion clock - eliminating need for external oscillator. The CLK pin must be tied to VDD or GND in this mode to prevent floating. External clock mode (D7=D6=1) accepts 100kHz–7.6MHz TTL/CMOS signals with 30–70% duty cycle, giving designers flexibility depending on system timing architecture requirements for the MAX1060BEEI+.

How does the HBEN pin function on the MAX1060BEEI+?

The HBEN (High Byte Enable) pin on the MAX1060BEEI+ controls multiplexing of the 10-bit conversion result onto the 8-bit data bus. When HBEN = 1, D1 and D0 carry D9 and D8 respectively; when HBEN = 0, D7–D0 carry D7–D0. This allows full 10-bit reads in two consecutive cycles without requiring a 10-bit bus, reducing PCB trace count and simplifying interface to standard 8-bit microcontrollers - a key design feature of the MAX1060BEEI+.

Can the MAX1060BEEI+ operate with a 3.3V digital supply?

Yes, the MAX1060BEEI+ supports VLOGIC from +2.7V to +5.5V, fully covering 3.3V logic levels. Its digital outputs (D7–D0, INT) are specified to drive VOH ≥ VLOGIC − 0.5V and VOL ≤ 0.4V at 1.6mA sink, ensuring clean interfacing with 3.3V FPGAs or microcontrollers. This VLOGIC independence from VDD (+5V analog supply) prevents digital noise coupling into the analog section - a critical capability built into the MAX1060BEEI+ for mixed-signal integrity.

What is the maximum sampling rate supported by the MAX1060BEEI+?

The MAX1060BEEI+ supports a maximum sampling rate of 400ksps, achieved with a 7.6MHz external clock or internal clock in external acquisition mode. Conversion time is fixed at 13 clock cycles (tCONV = 1.7µs typical), and timing diagrams confirm valid data appears on the bus within 100ns after CS fall (tDO2). This rate enables real-time capture of signals up to 200kHz while maintaining >60dB SINAD - a core performance specification validated for the MAX1060BEEI+ across its full temperature range.