Analog Devices Inc./Maxim Integrated MAX1027BCEE+

Overview

MAX1027BCEE+ from Maxim Integrated is a 10-bit, 300ksps serial analog-to-digital converter with integrated temperature sensor (±1.2°C error over –40°C to +85°C), internal 2.5V reference (±30ppm/°C drift), and 16-entry FIFO. It features 8 single-ended or 4 true differential input channels, SPI/QSPI/MICROWIRE-compatible 3-wire interface, and operates from a single +3V supply consuming 1.75mA at full rate. It is used in industrial data loggers for simultaneous voltage monitoring and ambient temperature tracking.

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

Technical Context

The MAX1027BCEE+ implements a fully differential successive-approximation register (SAR) architecture with on-chip track-and-hold, supporting both unipolar (0–VREF) and bipolar (±VREF/2) differential modes. Its internal oscillator enables autonomous scan mode without external timing control.

It integrates an analog multiplexer, FIFO buffer, internal averaging (up to 8x), AutoShutdown™, and a calibrated silicon temperature sensor. All conversions-voltage or temperature-use the internal 2.5V reference by default, and temperature results are output in two's complement format at 1/8°C resolution.

Key Specifications

Pinout & Package

MAX1027BCEE+ is housed in a 16-pin QSOP (5.3mm × 10.2mm) package with standard lead pitch (1.27mm). The exposed pad is absent-this is a plastic SOP variant, not TQFN.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1027BCEE+, ADS7822U trades resolution and features for footprint reduction, while AD7910BRMZ prioritizes raw speed over integrated functionality-neither offers the combined FIFO, temperature sensor, and 8-channel flexibility of the MAX1027BCEE+.

Availability

MAX1027BCEE+ is available at Aetrix Electronics and suitable for industrial process monitoring, patient vital sign acquisition, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX1027BCEE+ 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 industrial, medical, and communications systems.

The MAX1027 family targets compact, low-power data acquisition where integrated temperature sensing, FIFO buffering, and multichannel flexibility reduce system-level component count and firmware overhead.

FAQ

What is the operating temperature range for the MAX1027BCEE+?

The MAX1027BCEE+ is specified for operation from –40°C to +85°C. This extended industrial temperature range is confirmed in the Ordering Information table and Electrical Characteristics section of the official datasheet. The internal temperature sensor maintains ±1.2°C accuracy across this full range, and all DC and dynamic specifications-including INL, DNL, and SINAD-are guaranteed within these limits. The "B" grade suffix denotes this extended range, distinguishing it from commercial-grade variants.

Does the MAX1027BCEE+ require an external reference voltage?

No, the MAX1027BCEE+ does not require an external reference voltage-it includes a factory-trimmed 2.50V internal reference with ±30ppm/°C temperature coefficient and 200μVRMS noise. External reference inputs (REF+ and REF–) are optional and only needed when higher precision or custom reference levels are required. For most applications-including system supervision and data logging-the internal reference provides sufficient accuracy and simplifies design by eliminating external components.

How many analog input channels does the MAX1027BCEE+ support?

The MAX1027BCEE+ supports 8 single-ended analog input channels (AIN0–AIN7) or 4 true differential input pairs (e.g., AIN0/AIN1, AIN2/AIN3, etc.). This is explicitly stated in the General Description and Pin Description sections of the datasheet. Channel configuration is software-controlled via the setup register, and unused pins (e.g., AIN8–AIN15) are not bonded out in the QSOP-16 package-only AIN0–AIN7 and associated multifunction pins (CNVST/AIN7, REF–/AIN6) are physically present.

Can the MAX1027BCEE+ perform simultaneous sampling of multiple channels?

No, the MAX1027BCEE+ does not support simultaneous sampling-it uses a single SAR core with an analog multiplexer, so channels are sampled sequentially. However, its 300ksps maximum conversion rate and 16-entry FIFO enable rapid sequential acquisition across all 8 channels within ~27μs per channel (including acquisition and conversion time), effectively approximating simultaneous capture for low-frequency signals (<10kHz). True simultaneous sampling requires dedicated multiple-SAR or sigma-delta architectures not present in this device.

What package type is used for the MAX1027BCEE+?

The MAX1027BCEE+ uses a 16-pin QSOP (Quarter-Size Outline Package) with 1.27mm lead pitch and dimensions of 5.3mm × 10.2mm. The "BCEE+" suffix confirms this package per Maxim's ordering nomenclature: "B" = extended temperature, "C" = QSOP, "EE" = tape-and-reel packaging. This is distinct from the TQFN variants used for MAX1031 and differs from the 20-pin QSOP used for MAX1029-no exposed pad is present in this variant.