Analog Devices Inc./Maxim Integrated MAX1169CCUD+T

Overview

MAX1169CCUD+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 and consumes 5mW at 58.6ksps, supporting unipolar conversion on one analog input for precision measurement in space-constrained portable systems.

For engineers reviewing the MAX1169CCUD+T datasheet, MAX1169CCUD+T pinout, MAX1169CCUD+T application, or MAX1169CCUD+T equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts, and supply-chain support for battery-powered instrumentation and remote sensing deployments.

Technical Context

The MAX1169CCUD+T implements SAR architecture with integrated track-and-hold, using its internal 4MHz oscillator to drive conversion timing. It supports both I²C fast mode (400kHz) and high-speed mode (1.7MHz), with clock stretching during conversion to synchronize data readout.

It features dual-supply separation (AVDD/DVDD), enabling direct interfacing with +2.7V to +5.5V digital logic while maintaining analog integrity. The four address-select inputs (ADD0–ADD3) allow up to 16 devices on one bus, and internal reference shutdown reduces current to <50µA at 1ksps throughput.

Key Specifications

Pinout & Package

MAX1169CCUD+T is housed in a 14-pin TSSOP (4.4mm × 5.0mm, 0.65mm pitch), RoHS-compliant and lead-free, optimized for compact PCB layouts in handheld and remote systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS1115IDGSR and MAX11612ETE+, the MAX1169CCUD+T uniquely combines I²C high-speed mode (1.7MHz), built-in +4.096V reference, and 4-bit address configuration - making it optimal for scalable, low-power, multi-node sensor networks where bus simplicity and reference integration reduce system-level BOM and calibration overhead.

Availability

MAX1169CCUD+T is available at Aetrix Electronics and suitable for hand-held portable instruments, medical vital sign monitors, and solar-powered remote sensors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX1169CCUD+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX1169CCUD+T belongs to Maxim's precision data acquisition product line, designed specifically for low-power, high-resolution sensor interfacing in battery-constrained and space-sensitive embedded systems.

FAQ

What is the maximum sampling rate achievable with MAX1169CCUD+T?

The MAX1169CCUD+T achieves a maximum sampling rate of 58.6ksps when operating in I²C high-speed mode (1.7MHz SCL). This requires proper bus timing compliance, including minimum tLOW/tHIGH and rise/fall time specifications. In standard fast mode (400kHz), throughput drops to 19ksps due to longer clock cycles and protocol overhead. The internal 4MHz conversion clock remains fixed regardless of interface mode.

Does MAX1169CCUD+T require an external crystal or oscillator?

No, the MAX1169CCUD+T does not require an external crystal or oscillator. It integrates a precision 4MHz internal oscillator that drives the SAR conversion process. This eliminates external timing components, reduces PCB area, and improves reliability in vibration-prone or space-constrained applications such as portable medical devices and field instrumentation.

Can MAX1169CCUD+T operate with a 3.3V digital supply while using a 5V analog supply?

Yes, the MAX1169CCUD+T supports independent DVDD and AVDD supplies: DVDD accepts +2.7V to +5.5V, and AVDD requires +4.75V to +5.25V. This allows direct interfacing with 3.3V microcontrollers (DVDD = 3.3V) while powering the analog section from a clean 5V rail (AVDD = 5.0V), ensuring optimal SNR and minimizing digital switching noise coupling into the ADC core.

How many MAX1169CCUD+T devices can share the same I²C bus?

Up to 16 MAX1169CCUD+T devices can share a single I²C bus using the four address-select pins (ADD0–ADD3). Each pin configures one bit of the 4-bit LSB portion of the 7-bit slave address (MSBs are factory-fixed as 011). This enables flexible multi-sensor architectures without address conflicts - essential for distributed environmental monitoring or modular test equipment.

What is the purpose of the REFADJ pin on MAX1169CCUD+T?

The REFADJ pin on MAX1169CCUD+T serves dual functions: (1) When tied to AVDD, it disables the internal bandgap reference and reference buffer, enabling use of an external reference voltage applied to the REF pin; (2) When used with internal reference, it allows fine adjustment of the +4.096V output within ±60mV. This flexibility supports both cost-sensitive integrated-reference designs and high-stability external-reference configurations.