Analog Devices Inc./Maxim Integrated MAX1027BCEE+T

Overview

MAX1027BCEE+T from Maxim Integrated is a 10-bit, 300ksps serial analog-to-digital converter with integrated temperature sensor (±0.7°C accuracy), on-chip 16-entry FIFO, internal 2.5V reference, and SPI/QSPI/MICROWIRE-compatible interface. It features 8 single-ended or 4 true-differential input channels, operates from a +3V supply, and supports unipolar/bipolar configurations for industrial data acquisition and system supervision.

For engineers reviewing the MAX1027BCEE+T datasheet, MAX1027BCEE+T pinout, MAX1027BCEE+T application, or MAX1027BCEE+T equivalent, this page delivers verified specifications, validated QSOP-16 pin mapping, real-world use cases in patient monitoring and instrumentation, and two confirmed alternative ADCs with documented functional and packaging differences.

Technical Context

The MAX1027BCEE+T implements a fully differential successive-approximation register (SAR) architecture with integrated track-and-hold, supporting both single-ended and true-differential inputs across its 8-channel analog multiplexer. Its internal oscillator enables autonomous scan mode operation without external timing control.

It integrates a calibrated temperature sensor with 1/8°C resolution and ±0.7°C accuracy at +25°C, always referenced to its internal 2.5V reference (±30ppm/°C drift). The 16-deep FIFO buffers conversion results and temperature readings independently, allowing burst acquisition without serial bus contention.

Key Specifications

Pinout & Package

MAX1027BCEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.635mm pitch) with lead(Pb)-free/RoHS-compliant finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and AD7476AARMZ, the MAX1027BCEE+T uniquely combines 10-bit accuracy, integrated temperature sensing, 16-deep FIFO, and true-differential input capability in a single 16-pin QSOP - reducing system-level complexity for multi-sensor industrial and medical applications.

Availability

MAX1027BCEE+T is available at Aetrix Electronics and suitable for industrial process monitoring, portable patient monitoring, and environmental data logging requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MAX1027BCEE+T 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, medical, and communications applications.

The MAX1027BCEE+T belongs to Maxim's precision data acquisition product line, designed specifically for space-constrained, low-power systems needing integrated temperature sensing, multi-channel scanning, and robust serial interfacing without external support components.

FAQ

What is the operating temperature range for the MAX1027BCEE+T?

The MAX1027BCEE+T is specified for commercial operation from 0°C to +70°C, as indicated by the "C" grade suffix in its ordering code. This differs from the "E" grade (e.g., MAX1027BEEE+T), which supports –40°C to +85°C. The device's internal temperature sensor maintains ±0.7°C accuracy at +25°C within this range, with ±1.2°C error across the full 0°C to +70°C span.

Does the MAX1027BCEE+T require an external reference voltage?

No, the MAX1027BCEE+T includes a factory-trimmed 2.50V internal reference with ±10mV initial accuracy and ±30ppm/°C temperature coefficient, sufficient for most industrial and medical applications. An external differential reference can be applied via REF+ and REF– pins if higher precision or custom voltage scaling is required, but doing so disables the internal reference and temperature sensor functionality.

How many analog input channels does the MAX1027BCEE+T support?

The MAX1027BCEE+T supports 8 single-ended analog input channels (AIN0–AIN7) or 4 true-differential pairs (e.g., AIN0/AIN1, AIN2/AIN3). Channels AIN6 and AIN7 share dual functionality with REF– and CNVST respectively, and their use as analog inputs depends on register configuration. This 8-channel count is fixed for the MAX1027 family and distinguishes it from the 12-channel MAX1029 and 16-channel MAX1031 variants.

Can the MAX1027BCEE+T perform simultaneous sampling across multiple channels?

No, the MAX1027BCEE+T uses a single SAR core with a multiplexed analog front-end and does not support true simultaneous sampling. It performs sequential conversions across selected channels in scan mode, with typical inter-channel delay governed by conversion time (≤2.7μs) and acquisition time (0.6μs). For applications requiring phase-coherent multi-channel acquisition, an external sample-hold circuit or a dedicated simultaneous-sampling ADC would be required.

What is the purpose of the FIFO buffer in the MAX1027BCEE+T?

The 16-entry FIFO in the MAX1027BCEE+T stores complete 10-bit conversion results (plus temperature readings) to decouple data acquisition from serial readout. This allows the host microcontroller to initiate a multi-channel scan, enter low-power mode, and retrieve results later - preventing data loss during high-throughput bursts and reducing CPU interrupt load in real-time systems.