Analog Devices Inc./Maxim Integrated MAX1187CEUI+

Overview

MAX1187CEUI+ from Maxim Integrated is a 16-bit, 135ksps successive-approximation ADC with unipolar 0V to +10V analog input range, single +4.75V to +5.25V analog supply, and parallel 16-bit digital interface. It features ±2LSB integral nonlinearity, -100dB THD, and operates across -40°C to +85°C in industrial data-acquisition systems requiring high DC accuracy and low power.

For engineers reviewing the MAX1187CEUI+ datasheet, MAX1187CEUI+ pinout, MAX1187CEUI+ application, or MAX1187CEUI+ equivalent, this page delivers verified specifications, package mapping, real-world use context, and validated alternative options for precision analog-to-digital conversion in embedded instrumentation and process control.

Technical Context

The MAX1187CEUI+ implements a SAR architecture with integrated track-and-hold and factory-trimmed internal +4.096V reference. Its input scaler enables true 0V–10V unipolar operation from a single 5V analog rail without external level-shifting circuitry.

Conversion is controlled via three-phase CS/R/C timing: acquisition starts on first CS fall (R/C low), conversion begins on second CS fall, and parallel data appears on D0–D15 after third CS fall (R/C high). EOC signals completion, and AutoShutdown reduces current to 0.4mA at 10ksps.

Key Specifications

Pinout & Package

MAX1187CEUI+ is housed in a 28-pin TSSOP (Thin Shrink Small Outline Package) with 0.65mm pitch, 4.4mm × 9.7mm body, and exposed thermal pad (not electrically connected). Pin 1 marked by dot; top-side marking includes "187C" and date code.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit SAR ADC applications.

Compared with ADS8860IDRCT and AD7606C-16BSTZ, the MAX1187CEUI+ uniquely combines unipolar 0–10V input, internal reference, AutoShutdown, and compact 28-pin TSSOP in a single-supply 5V system - making it optimal for cost-sensitive, thermally constrained industrial I/O where simplicity and proven reliability outweigh raw speed or multi-channel complexity.

Availability

MAX1187CEUI+ is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, and data-acquisition systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.

Supply support for MAX1187CEUI+ 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, automotive, and communications markets.

The MAX1179/MAX1187/MAX1189 family was designed specifically for high-accuracy, low-power, single-supply data acquisition in space- and energy-constrained industrial environments - emphasizing DC precision, robust timing control, and simplified system integration.

FAQ

What is the analog input voltage range supported by the MAX1187CEUI+?

The MAX1187CEUI+ supports a unipolar analog input range of 0V to +10V. This is distinct from the MAX1179 (±5V) and MAX1189 (±10V) variants in the same family. The input scaler circuit allows this full 10V span to be digitized directly from a single +5V analog supply without external level-shifting components. The device maintains ±2LSB INL across this entire range at -40°C to +85°C.

Does the MAX1187CEUI+ include an internal voltage reference?

Yes, the MAX1187CEUI+ integrates a factory-trimmed +4.096V internal reference with ±35ppm/°C temperature coefficient. It is buffered and available at the REF pin. When used, it eliminates the need for an external reference IC. REFADJ provides a 5kΩ impedance node for fine adjustment or external reference selection. Internal reference operation consumes 6.2mA total supply current at 135ksps.

How does the R/C pin control power-down behavior in the MAX1187CEUI+?

In the MAX1187CEUI+, the R/C pin configures power state during the second falling edge of CS. Holding R/C low places the device in standby mode - keeping the internal reference and buffer powered for fast wake-up (<1µs). Setting R/C high triggers shutdown mode, powering down the reference and buffer to reduce supply current to 0.4mA at 10ksps. Full 16-bit accuracy requires 12ms reference settling after shutdown exit.

What package type and pin count does the MAX1187CEUI+ use?

The MAX1187CEUI+ is packaged in a 28-pin TSSOP (Thin Shrink Small Outline Package) with 0.65mm lead pitch and 4.4mm × 9.7mm body dimensions. It features exposed thermal pad (non-functional), pin 1 indicator dot, and standard JEDEC MO-153 compliance. This compact footprint supports high-density PCB layouts in industrial modules and portable instrumentation.

Can the MAX1187CEUI+ interface directly with 3.3V microcontrollers?

Yes, the MAX1187CEUI+ supports digital logic voltages from +2.7V to +5.25V on DVDD, enabling direct connection to 3.3V microcontrollers without level shifters. Its digital outputs (D0–D15, EOC) meet VOH ≥ DVDD – 0.4V and VOL ≤ 0.4V under load, and inputs accept VIH ≥ 0.7×DVDD and VIL ≤ 0.3×DVDD. AGND and DGND must be connected at a single star point near the device.