Analog Devices Inc./Maxim Integrated MAX1230BEEG+T

Overview

MAX1230BEEG+T from Maxim Integrated is a 12-bit, 300ksps serial analog-to-digital converter with integrated temperature sensor (±1.2°C error over –40°C to +85°C), 16-entry FIFO, internal 4.096V reference, and true differential track/hold. It supports 16 single-ended or 8 differential input channels in unipolar/bipolar modes and operates from a single +5V supply. Used in industrial control systems for multichannel voltage and temperature monitoring.

For engineers reviewing the MAX1230BEEG+T datasheet, MAX1230BEEG+T pinout, MAX1230BEEG+T application, or MAX1230BEEG+T 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 MAX1230BEEG+T variant.

Technical Context

The MAX1230BEEG+T implements a fully differential successive-approximation register (SAR) architecture with on-chip track-and-hold, supporting both single-ended and true differential inputs. Its internal oscillator enables autonomous scan mode with programmable averaging and FIFO buffering.

It features a 10MHz SPI/QSPI/MICROWIRE-compatible 3-wire serial interface with configurable clock modes (CKSEL[1:0]), active-low EOC signaling, and dual-function pins (e.g., CNVST/AIN15, REF-/AIN14). Temperature measurement always uses the internal reference and outputs two's complement data at 1/8°C resolution.

Key Specifications

Pinout & Package

The MAX1230BEEG+T is housed in a 28-pin 5mm × 5mm thin QFN package with exposed pad (EP), rated for –40°C to +85°C operation. The exposed pad must be connected to GND for thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multichannel, temperature-integrated ADC applications.

Compared with ADS8688IPWR and AD7949BCPZ-RL7, the MAX1230BEEG+T uniquely integrates a calibrated temperature sensor and 16-channel flexibility in a single +5V device - making it optimal for compact, self-contained monitoring systems where thermal context is essential to voltage interpretation.

Availability

MAX1230BEEG+T is available at Aetrix Electronics and suitable for industrial process monitoring, medical vital sign acquisition, and battery-powered data logging requiring stable component supply across extended temperature ranges.

Supply support for MAX1230BEEG+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) designs precision analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX1230BEEG+T belongs to Maxim's high-accuracy, low-power SAR ADC product line, engineered specifically for multichannel system supervision where integrated temperature awareness and minimal external components are critical.

FAQ

What is the operating temperature range for the MAX1230BEEG+T?

The MAX1230BEEG+T is specified for continuous operation from –40°C to +85°C. This extended industrial temperature range is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the official datasheet, and applies to all performance parameters including INL, DNL, reference stability, and temperature sensor accuracy.

Does the MAX1230BEEG+T require an external reference voltage?

No - the MAX1230BEEG+T includes an internal 4.096V reference with ±20ppm/°C temperature coefficient, usable for both voltage and temperature conversions. An external differential reference can be applied via REF+ and REF– pins, but is optional; the internal reference remains active for temperature sensing regardless of external reference selection.

How many analog input channels does the MAX1230BEEG+T support?

The MAX1230BEEG+T supports 16 single-ended analog inputs (AIN0–AIN15) or 8 true differential input pairs (e.g., AIN0/AIN1 through AIN14/AIN15). Channels AIN12–AIN15 are exclusive to the MAX1230 family and are physically present and functional on the MAX1230BEEG+T in its 28-pin TQFN package.

What is the purpose of the FIFO in the MAX1230BEEG+T?

The 16-entry FIFO in the MAX1230BEEG+T buffers conversion results - up to 16 voltage samples plus one temperature reading - allowing autonomous scanning without host processor intervention. This decouples acquisition timing from data retrieval, reducing SPI bus contention and enabling efficient burst reads after multi-channel sequences.

Can the MAX1230BEEG+T perform simultaneous sampling of multiple channels?

No - the MAX1230BEEG+T uses a single SAR core with a multiplexer and shared track-and-hold, so channels are sampled sequentially, not simultaneously. However, its fast acquisition time (≤0.6µs) and internal FIFO enable high-throughput pseudo-simultaneous capture across all 16 channels within tight time windows, suitable for coherent multi-sensor monitoring.