Analog Devices Inc./Maxim Integrated MAX1169CEUD+T

Overview

MAX1169CEUD+T from Maxim Integrated is a low-power, 16-bit successive-approximation analog-to-digital converter (ADC) with I²C-compatible 2-wire serial interface, internal 4MHz clock, and +4.096V reference. It operates from a single +4.75V to +5.25V analog supply, consumes 5mW at 58.6ksps, and supports unipolar conversion on a single analog input for precision sensor digitization in portable instrumentation.

For engineers reviewing the MAX1169CEUD+T datasheet, MAX1169CEUD+T pinout, MAX1169CEUD+T application, or MAX1169CEUD+T equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts for system-level trade-off analysis.

Technical Context

The MAX1169CEUD+T implements SAR architecture with integrated track-and-hold, using its internal 4MHz oscillator to drive conversion timing. It performs unipolar conversion over a full-scale range set by either its internal +4.096V reference or an external reference from 1V to V_AVDD.

Its I²C interface supports both Fast Mode (400kHz) and High-Speed Mode (1.7MHz), with clock stretching during conversion. Four address-select inputs (ADD0–ADD3) enable up to 16 devices on one bus, and AutoShutdown™ reduces current to <50µA at 1ksps throughput.

Key Specifications

Pinout & Package

MAX1169CEUD+T is housed in a 14-pin TSSOP (Thin Shrink Small Outline Package) with 0.65mm pitch, optimized for compact PCB layouts in space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit I²C ADC applications.

Compared with ADS1115IRUGT and MAX11612EUB+, the MAX1169CEUD+T uniquely balances 58.6ksps sampling, I²C compatibility, internal 4.096V reference, and <5mW power-making it optimal for portable, battery-constrained systems needing moderate speed and minimal external components.

Availability

MAX1169CEUD+T is available at Aetrix Electronics and suitable for hand-held portable instruments, medical vital sign monitors, and battery-powered test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX1169CEUD+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 demanding industrial, medical, and communications applications.

The MAX1169CEUD+T belongs to Maxim's high-accuracy, low-power SAR ADC product line-engineered specifically for portable, battery-operated instrumentation where resolution, speed, and power efficiency must coexist without external timing or reference components.

FAQ

What is the guaranteed INL specification for MAX1169CEUD+T?

The MAX1169CEUD+T is specified with ±2 LSB integral nonlinearity (INL) over the full operating temperature range (−40°C to +85°C). This value is guaranteed for the 'B' grade version, which MAX1169CEUD+T represents per Maxim's ordering nomenclature and datasheet Table 1. The ±2 LSB INL ensures monotonic behavior and supports high-accuracy calibration workflows in production test environments.

Does MAX1169CEUD+T support external reference voltages, and what is the valid range?

Yes, MAX1169CEUD+T supports external reference voltages applied to the REF pin. The valid range is 1.0V to V_AVDD, as explicitly stated in the General Description and Electrical Characteristics sections of the datasheet. When using an external reference, REFADJ must be tied to AVDD to disable the internal bandgap reference and buffer amplifier-ensuring accurate tracking and minimal loading error.

What are the power supply requirements for MAX1169CEUD+T analog and digital rails?

MAX1169CEUD+T requires AVDD = +4.75V to +5.25V for analog circuitry and DVDD = +2.7V to +5.5V for digital I/O. These are independent supplies, allowing mixed-voltage system integration-for example, +5.0V AVDD and +3.3V DVDD. Both rails must be decoupled: AVDD to AGND with 0.1µF, DVDD to DGND with 0.1µF, and REF to AGND with 10µF ceramic capacitor.

How does AutoShutdown™ operate in MAX1169CEUD+T, and what current does it achieve?

In MAX1169CEUD+T, AutoShutdown™ powers down the internal reference and analog circuitry between conversions. At 1ksps throughput, supply current drops to less than 50µA (typical 40µA), and in full shutdown (R/W = 0, no conversion), analog supply current falls to 0.4–5µA. This feature is enabled automatically-no register writes required-and is fundamental to achieving 0.23mW total power at 1ksps.

Can multiple MAX1169CEUD+T devices share the same I²C bus, and how is addressing configured?

Yes, up to 16 MAX1169CEUD+T devices can share one I²C bus using hardware address select pins ADD0–ADD3. Each pin is strapped to DVDD (logic high) or DGND (logic low) to set the corresponding bit of the 4-bit LSB address. The MSB 3 bits are factory-fixed to '011', yielding a full 7-bit slave address. This eliminates software address management and supports scalable sensor node architectures.