Analog Devices Inc./Maxim Integrated MAX1030BCTI

Overview

MAX1030BCTI from Maxim Integrated is a 10-bit, 300ksps serial analog-to-digital converter with integrated temperature sensor (±0.7°C accuracy at +25°C), 16-entry FIFO, and internal 4.096V reference. It supports 16 single-ended or 8 true differential input channels in unipolar/bipolar modes and operates from a single +5V supply. It is used in industrial control systems for multichannel voltage and temperature monitoring with minimal host interface overhead.

For engineers reviewing the MAX1030BCTI datasheet, MAX1030BCTI pinout, MAX1030BCTI application, or MAX1030BCTI equivalent, this page delivers verified technical context, real-world design meaning of key specs, package-validated pin functions, and two confirmed alternative parts - all grounded in Maxim's official documentation for the MAX1030BCTI variant.

Technical Context

The MAX1030BCTI implements a fully differential successive-approximation register (SAR) ADC core with on-chip track-and-hold, supporting both internally clocked (up to 300ksps) and externally clocked acquisition. Its architecture integrates an internal oscillator (±10% accuracy), FIFO buffer, and configurable scan/averaging logic - enabling autonomous multichannel sampling without continuous host intervention.

It features dual-reference capability: internal 4.096V reference (±20ppm/°C TC, 200μVRMS noise) or external differential reference (REF+/REF−). Input configuration is controlled via SPI-compatible serial interface (10MHz, 3-wire), with dedicated CNVST pin for hardware-triggered conversions in clock modes 00 and 01.

Key Specifications

Pinout & Package

The MAX1030BCTI is packaged in a 28-pin 5mm × 5mm TQFN with exposed pad (EP), RoHS-compliant and lead-free. The exposed pad must be soldered to GND for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1030BCTI, ADS7953SRHBT offers higher speed and resolution but increases system complexity by requiring external thermal and reference circuitry, while AD7923BRUZ reduces channel count and removes FIFO autonomy - making MAX1030BCTI optimal for integrated 16-channel, temperature-aware, low-power industrial data acquisition.

Availability

MAX1030BCTI is available at Aetrix Electronics and suitable for industrial control systems, medical instrumentation, and environmental data loggers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX1030BCTI 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 high-reliability semiconductor solutions for industrial, medical, and communications markets.

The MAX1030BCTI belongs to Maxim's precision data acquisition product line, engineered specifically for multichannel, low-power, temperature-aware analog monitoring in space-constrained and thermally demanding environments.

FAQ

What is the operating temperature range for the MAX1030BCTI?

The MAX1030BCTI is specified over the extended industrial temperature range of −40°C to +85°C. This rating applies to all electrical characteristics including INL/DNL, reference stability, and temperature sensor accuracy. The device maintains ±1 LSB linearity and ±1.2°C thermal measurement error across this full range, making MAX1030BCTI suitable for deployment in harsh environments such as factory floors and outdoor telemetry units.

Does the MAX1030BCTI require an external reference, or can it operate with its internal reference?

The MAX1030BCTI can operate with either its internal 4.096V reference (±20ppm/°C TC) or an external differential reference applied to REF+ and REF− pins. The internal reference is mandatory for temperature measurements and is automatically enabled during thermal reads. For voltage conversions, users may select internal or external reference via the REFSEL bits in the setup register - MAX1030BCTI does not require external components to function.

How many analog input channels does the MAX1030BCTI support, and how are they configured?

The MAX1030BCTI supports 16 single-ended analog inputs (AIN0–AIN15) or 8 true differential pairs (e.g., AIN0/AIN1, AIN2/AIN3, up to AIN14/AIN15). Configuration is performed via the setup and unipolar/bipolar registers over the SPI interface. AIN12–AIN15 are exclusive to the MAX1030 family - MAX1026/MAX1028 variants have fewer channels. Each channel can be independently set for unipolar or bipolar differential operation.

What is the purpose of the FIFO in the MAX1030BCTI, and how does it improve system design?

The MAX1030BCTI contains a 16-deep FIFO that stores ADC conversion results and temperature readings. This allows the host processor to initiate multiple conversions (e.g., full 16-channel scan) and read results later - decoupling acquisition timing from communication latency. In practice, this reduces interrupt load, enables deterministic sampling intervals, and simplifies firmware for MAX1030BCTI-based data loggers and real-time control systems.

Can the MAX1030BCTI perform simultaneous sampling across multiple channels?

No, the MAX1030BCTI does not support true simultaneous sampling. It uses a single SAR ADC core with multiplexed inputs and sequential conversion - meaning channels are sampled one after another within a scan cycle. However, its fast 3.5μs max conversion time and 16-entry FIFO enable near-simultaneous effective sampling for most industrial and medical applications where inter-channel skew under 10μs is acceptable.